| /* |
| * GPL HEADER START |
| * |
| * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
| * |
| * This program is free software; you can redistribute it and/or modify |
| * it under the terms of the GNU General Public License version 2 only, |
| * as published by the Free Software Foundation. |
| * |
| * This program is distributed in the hope that it will be useful, but |
| * WITHOUT ANY WARRANTY; without even the implied warranty of |
| * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
| * General Public License version 2 for more details (a copy is included |
| * in the LICENSE file that accompanied this code). |
| * |
| * You should have received a copy of the GNU General Public License |
| * version 2 along with this program; If not, see |
| * http://www.sun.com/software/products/lustre/docs/GPLv2.pdf |
| * |
| * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara, |
| * CA 95054 USA or visit www.sun.com if you need additional information or |
| * have any questions. |
| * |
| * GPL HEADER END |
| */ |
| /* |
| * Copyright (c) 2003, 2010, Oracle and/or its affiliates. All rights reserved. |
| * Use is subject to license terms. |
| * |
| * Copyright (c) 2011, 2012, Intel Corporation. |
| */ |
| /* |
| * This file is part of Lustre, http://www.lustre.org/ |
| * Lustre is a trademark of Sun Microsystems, Inc. |
| * |
| * lustre/llite/llite_lib.c |
| * |
| * Lustre Light Super operations |
| */ |
| |
| #define DEBUG_SUBSYSTEM S_LLITE |
| |
| #include <linux/module.h> |
| #include <linux/statfs.h> |
| #include <linux/types.h> |
| #include <linux/mm.h> |
| |
| #include "../include/lustre_lite.h" |
| #include "../include/lustre_ha.h" |
| #include "../include/lustre_dlm.h" |
| #include "../include/lprocfs_status.h" |
| #include "../include/lustre_disk.h" |
| #include "../include/lustre_param.h" |
| #include "../include/lustre_log.h" |
| #include "../include/cl_object.h" |
| #include "../include/obd_cksum.h" |
| #include "llite_internal.h" |
| |
| struct kmem_cache *ll_file_data_slab; |
| struct dentry *llite_root; |
| struct kset *llite_kset; |
| |
| static LIST_HEAD(ll_super_blocks); |
| static DEFINE_SPINLOCK(ll_sb_lock); |
| |
| #ifndef log2 |
| #define log2(n) ffz(~(n)) |
| #endif |
| |
| static struct ll_sb_info *ll_init_sbi(struct super_block *sb) |
| { |
| struct ll_sb_info *sbi = NULL; |
| unsigned long pages; |
| unsigned long lru_page_max; |
| struct sysinfo si; |
| class_uuid_t uuid; |
| int i; |
| |
| sbi = kzalloc(sizeof(*sbi), GFP_NOFS); |
| if (!sbi) |
| return NULL; |
| |
| spin_lock_init(&sbi->ll_lock); |
| mutex_init(&sbi->ll_lco.lco_lock); |
| spin_lock_init(&sbi->ll_pp_extent_lock); |
| spin_lock_init(&sbi->ll_process_lock); |
| sbi->ll_rw_stats_on = 0; |
| |
| si_meminfo(&si); |
| pages = si.totalram - si.totalhigh; |
| if (pages >> (20 - PAGE_CACHE_SHIFT) < 512) |
| lru_page_max = pages / 2; |
| else |
| lru_page_max = (pages / 4) * 3; |
| |
| /* initialize lru data */ |
| atomic_set(&sbi->ll_cache.ccc_users, 0); |
| sbi->ll_cache.ccc_lru_max = lru_page_max; |
| atomic_set(&sbi->ll_cache.ccc_lru_left, lru_page_max); |
| spin_lock_init(&sbi->ll_cache.ccc_lru_lock); |
| INIT_LIST_HEAD(&sbi->ll_cache.ccc_lru); |
| |
| sbi->ll_ra_info.ra_max_pages_per_file = min(pages / 32, |
| SBI_DEFAULT_READAHEAD_MAX); |
| sbi->ll_ra_info.ra_max_pages = sbi->ll_ra_info.ra_max_pages_per_file; |
| sbi->ll_ra_info.ra_max_read_ahead_whole_pages = |
| SBI_DEFAULT_READAHEAD_WHOLE_MAX; |
| INIT_LIST_HEAD(&sbi->ll_conn_chain); |
| INIT_LIST_HEAD(&sbi->ll_orphan_dentry_list); |
| |
| ll_generate_random_uuid(uuid); |
| class_uuid_unparse(uuid, &sbi->ll_sb_uuid); |
| CDEBUG(D_CONFIG, "generated uuid: %s\n", sbi->ll_sb_uuid.uuid); |
| |
| spin_lock(&ll_sb_lock); |
| list_add_tail(&sbi->ll_list, &ll_super_blocks); |
| spin_unlock(&ll_sb_lock); |
| |
| sbi->ll_flags |= LL_SBI_VERBOSE; |
| sbi->ll_flags |= LL_SBI_CHECKSUM; |
| |
| sbi->ll_flags |= LL_SBI_LRU_RESIZE; |
| |
| for (i = 0; i <= LL_PROCESS_HIST_MAX; i++) { |
| spin_lock_init(&sbi->ll_rw_extents_info.pp_extents[i]. |
| pp_r_hist.oh_lock); |
| spin_lock_init(&sbi->ll_rw_extents_info.pp_extents[i]. |
| pp_w_hist.oh_lock); |
| } |
| |
| /* metadata statahead is enabled by default */ |
| sbi->ll_sa_max = LL_SA_RPC_DEF; |
| atomic_set(&sbi->ll_sa_total, 0); |
| atomic_set(&sbi->ll_sa_wrong, 0); |
| atomic_set(&sbi->ll_agl_total, 0); |
| sbi->ll_flags |= LL_SBI_AGL_ENABLED; |
| |
| sbi->ll_sb = sb; |
| |
| return sbi; |
| } |
| |
| static void ll_free_sbi(struct super_block *sb) |
| { |
| struct ll_sb_info *sbi = ll_s2sbi(sb); |
| |
| if (sbi != NULL) { |
| spin_lock(&ll_sb_lock); |
| list_del(&sbi->ll_list); |
| spin_unlock(&ll_sb_lock); |
| kfree(sbi); |
| } |
| } |
| |
| static int client_common_fill_super(struct super_block *sb, char *md, char *dt, |
| struct vfsmount *mnt) |
| { |
| struct inode *root = NULL; |
| struct ll_sb_info *sbi = ll_s2sbi(sb); |
| struct obd_device *obd; |
| struct obd_capa *oc = NULL; |
| struct obd_statfs *osfs = NULL; |
| struct ptlrpc_request *request = NULL; |
| struct obd_connect_data *data = NULL; |
| struct obd_uuid *uuid; |
| struct md_op_data *op_data; |
| struct lustre_md lmd; |
| u64 valid; |
| int size, err, checksum; |
| |
| obd = class_name2obd(md); |
| if (!obd) { |
| CERROR("MD %s: not setup or attached\n", md); |
| return -EINVAL; |
| } |
| |
| data = kzalloc(sizeof(*data), GFP_NOFS); |
| if (!data) |
| return -ENOMEM; |
| |
| osfs = kzalloc(sizeof(*osfs), GFP_NOFS); |
| if (!osfs) { |
| kfree(data); |
| return -ENOMEM; |
| } |
| |
| if (llite_root != NULL) { |
| err = ldebugfs_register_mountpoint(llite_root, sb, dt, md); |
| if (err < 0) |
| CERROR("could not register mount in <debugfs>/lustre/llite\n"); |
| } |
| |
| /* indicate the features supported by this client */ |
| data->ocd_connect_flags = OBD_CONNECT_IBITS | OBD_CONNECT_NODEVOH | |
| OBD_CONNECT_ATTRFID | |
| OBD_CONNECT_VERSION | OBD_CONNECT_BRW_SIZE | |
| OBD_CONNECT_MDS_CAPA | OBD_CONNECT_OSS_CAPA | |
| OBD_CONNECT_CANCELSET | OBD_CONNECT_FID | |
| OBD_CONNECT_AT | OBD_CONNECT_LOV_V3 | |
| OBD_CONNECT_RMT_CLIENT | OBD_CONNECT_VBR | |
| OBD_CONNECT_FULL20 | OBD_CONNECT_64BITHASH| |
| OBD_CONNECT_EINPROGRESS | |
| OBD_CONNECT_JOBSTATS | OBD_CONNECT_LVB_TYPE | |
| OBD_CONNECT_LAYOUTLOCK | |
| OBD_CONNECT_PINGLESS | |
| OBD_CONNECT_MAX_EASIZE | |
| OBD_CONNECT_FLOCK_DEAD | |
| OBD_CONNECT_DISP_STRIPE; |
| |
| if (sbi->ll_flags & LL_SBI_SOM_PREVIEW) |
| data->ocd_connect_flags |= OBD_CONNECT_SOM; |
| |
| if (sbi->ll_flags & LL_SBI_LRU_RESIZE) |
| data->ocd_connect_flags |= OBD_CONNECT_LRU_RESIZE; |
| #ifdef CONFIG_FS_POSIX_ACL |
| data->ocd_connect_flags |= OBD_CONNECT_ACL | OBD_CONNECT_UMASK; |
| #endif |
| |
| if (OBD_FAIL_CHECK(OBD_FAIL_MDC_LIGHTWEIGHT)) |
| /* flag mdc connection as lightweight, only used for test |
| * purpose, use with care */ |
| data->ocd_connect_flags |= OBD_CONNECT_LIGHTWEIGHT; |
| |
| data->ocd_ibits_known = MDS_INODELOCK_FULL; |
| data->ocd_version = LUSTRE_VERSION_CODE; |
| |
| if (sb->s_flags & MS_RDONLY) |
| data->ocd_connect_flags |= OBD_CONNECT_RDONLY; |
| if (sbi->ll_flags & LL_SBI_USER_XATTR) |
| data->ocd_connect_flags |= OBD_CONNECT_XATTR; |
| |
| if (sbi->ll_flags & LL_SBI_FLOCK) |
| sbi->ll_fop = &ll_file_operations_flock; |
| else if (sbi->ll_flags & LL_SBI_LOCALFLOCK) |
| sbi->ll_fop = &ll_file_operations; |
| else |
| sbi->ll_fop = &ll_file_operations_noflock; |
| |
| /* real client */ |
| data->ocd_connect_flags |= OBD_CONNECT_REAL; |
| if (sbi->ll_flags & LL_SBI_RMT_CLIENT) |
| data->ocd_connect_flags |= OBD_CONNECT_RMT_CLIENT_FORCE; |
| |
| data->ocd_brw_size = MD_MAX_BRW_SIZE; |
| |
| err = obd_connect(NULL, &sbi->ll_md_exp, obd, &sbi->ll_sb_uuid, |
| data, NULL); |
| if (err == -EBUSY) { |
| LCONSOLE_ERROR_MSG(0x14f, "An MDT (md %s) is performing recovery, of which this client is not a part. Please wait for recovery to complete, abort, or time out.\n", |
| md); |
| goto out; |
| } else if (err) { |
| CERROR("cannot connect to %s: rc = %d\n", md, err); |
| goto out; |
| } |
| |
| sbi->ll_md_exp->exp_connect_data = *data; |
| |
| err = obd_fid_init(sbi->ll_md_exp->exp_obd, sbi->ll_md_exp, |
| LUSTRE_SEQ_METADATA); |
| if (err) { |
| CERROR("%s: Can't init metadata layer FID infrastructure, rc = %d\n", |
| sbi->ll_md_exp->exp_obd->obd_name, err); |
| goto out_md; |
| } |
| |
| /* For mount, we only need fs info from MDT0, and also in DNE, it |
| * can make sure the client can be mounted as long as MDT0 is |
| * available */ |
| err = obd_statfs(NULL, sbi->ll_md_exp, osfs, |
| cfs_time_shift_64(-OBD_STATFS_CACHE_SECONDS), |
| OBD_STATFS_FOR_MDT0); |
| if (err) |
| goto out_md_fid; |
| |
| /* This needs to be after statfs to ensure connect has finished. |
| * Note that "data" does NOT contain the valid connect reply. |
| * If connecting to a 1.8 server there will be no LMV device, so |
| * we can access the MDC export directly and exp_connect_flags will |
| * be non-zero, but if accessing an upgraded 2.1 server it will |
| * have the correct flags filled in. |
| * XXX: fill in the LMV exp_connect_flags from MDC(s). */ |
| valid = exp_connect_flags(sbi->ll_md_exp) & CLIENT_CONNECT_MDT_REQD; |
| if (exp_connect_flags(sbi->ll_md_exp) != 0 && |
| valid != CLIENT_CONNECT_MDT_REQD) { |
| char *buf; |
| |
| buf = kzalloc(PAGE_CACHE_SIZE, GFP_KERNEL); |
| if (!buf) { |
| err = -ENOMEM; |
| goto out_md_fid; |
| } |
| obd_connect_flags2str(buf, PAGE_CACHE_SIZE, |
| valid ^ CLIENT_CONNECT_MDT_REQD, ","); |
| LCONSOLE_ERROR_MSG(0x170, "Server %s does not support feature(s) needed for correct operation of this client (%s). Please upgrade server or downgrade client.\n", |
| sbi->ll_md_exp->exp_obd->obd_name, buf); |
| kfree(buf); |
| err = -EPROTO; |
| goto out_md_fid; |
| } |
| |
| size = sizeof(*data); |
| err = obd_get_info(NULL, sbi->ll_md_exp, sizeof(KEY_CONN_DATA), |
| KEY_CONN_DATA, &size, data, NULL); |
| if (err) { |
| CERROR("%s: Get connect data failed: rc = %d\n", |
| sbi->ll_md_exp->exp_obd->obd_name, err); |
| goto out_md_fid; |
| } |
| |
| LASSERT(osfs->os_bsize); |
| sb->s_blocksize = osfs->os_bsize; |
| sb->s_blocksize_bits = log2(osfs->os_bsize); |
| sb->s_magic = LL_SUPER_MAGIC; |
| sb->s_maxbytes = MAX_LFS_FILESIZE; |
| sbi->ll_namelen = osfs->os_namelen; |
| |
| if ((sbi->ll_flags & LL_SBI_USER_XATTR) && |
| !(data->ocd_connect_flags & OBD_CONNECT_XATTR)) { |
| LCONSOLE_INFO("Disabling user_xattr feature because it is not supported on the server\n"); |
| sbi->ll_flags &= ~LL_SBI_USER_XATTR; |
| } |
| |
| if (data->ocd_connect_flags & OBD_CONNECT_ACL) { |
| #ifdef MS_POSIXACL |
| sb->s_flags |= MS_POSIXACL; |
| #endif |
| sbi->ll_flags |= LL_SBI_ACL; |
| } else { |
| LCONSOLE_INFO("client wants to enable acl, but mdt not!\n"); |
| #ifdef MS_POSIXACL |
| sb->s_flags &= ~MS_POSIXACL; |
| #endif |
| sbi->ll_flags &= ~LL_SBI_ACL; |
| } |
| |
| if (data->ocd_connect_flags & OBD_CONNECT_RMT_CLIENT) { |
| if (!(sbi->ll_flags & LL_SBI_RMT_CLIENT)) { |
| sbi->ll_flags |= LL_SBI_RMT_CLIENT; |
| LCONSOLE_INFO("client is set as remote by default.\n"); |
| } |
| } else { |
| if (sbi->ll_flags & LL_SBI_RMT_CLIENT) { |
| sbi->ll_flags &= ~LL_SBI_RMT_CLIENT; |
| LCONSOLE_INFO("client claims to be remote, but server rejected, forced to be local.\n"); |
| } |
| } |
| |
| if (data->ocd_connect_flags & OBD_CONNECT_MDS_CAPA) { |
| LCONSOLE_INFO("client enabled MDS capability!\n"); |
| sbi->ll_flags |= LL_SBI_MDS_CAPA; |
| } |
| |
| if (data->ocd_connect_flags & OBD_CONNECT_OSS_CAPA) { |
| LCONSOLE_INFO("client enabled OSS capability!\n"); |
| sbi->ll_flags |= LL_SBI_OSS_CAPA; |
| } |
| |
| if (data->ocd_connect_flags & OBD_CONNECT_64BITHASH) |
| sbi->ll_flags |= LL_SBI_64BIT_HASH; |
| |
| if (data->ocd_connect_flags & OBD_CONNECT_BRW_SIZE) |
| sbi->ll_md_brw_size = data->ocd_brw_size; |
| else |
| sbi->ll_md_brw_size = PAGE_CACHE_SIZE; |
| |
| if (data->ocd_connect_flags & OBD_CONNECT_LAYOUTLOCK) { |
| LCONSOLE_INFO("Layout lock feature supported.\n"); |
| sbi->ll_flags |= LL_SBI_LAYOUT_LOCK; |
| } |
| |
| if (data->ocd_ibits_known & MDS_INODELOCK_XATTR) { |
| if (!(data->ocd_connect_flags & OBD_CONNECT_MAX_EASIZE)) { |
| LCONSOLE_INFO( |
| "%s: disabling xattr cache due to unknown maximum xattr size.\n", |
| dt); |
| } else { |
| sbi->ll_flags |= LL_SBI_XATTR_CACHE; |
| sbi->ll_xattr_cache_enabled = 1; |
| } |
| } |
| |
| obd = class_name2obd(dt); |
| if (!obd) { |
| CERROR("DT %s: not setup or attached\n", dt); |
| err = -ENODEV; |
| goto out_md_fid; |
| } |
| |
| data->ocd_connect_flags = OBD_CONNECT_GRANT | OBD_CONNECT_VERSION | |
| OBD_CONNECT_REQPORTAL | OBD_CONNECT_BRW_SIZE | |
| OBD_CONNECT_CANCELSET | OBD_CONNECT_FID | |
| OBD_CONNECT_SRVLOCK | OBD_CONNECT_TRUNCLOCK| |
| OBD_CONNECT_AT | OBD_CONNECT_RMT_CLIENT | |
| OBD_CONNECT_OSS_CAPA | OBD_CONNECT_VBR| |
| OBD_CONNECT_FULL20 | OBD_CONNECT_64BITHASH | |
| OBD_CONNECT_MAXBYTES | |
| OBD_CONNECT_EINPROGRESS | |
| OBD_CONNECT_JOBSTATS | OBD_CONNECT_LVB_TYPE | |
| OBD_CONNECT_LAYOUTLOCK | OBD_CONNECT_PINGLESS; |
| |
| if (sbi->ll_flags & LL_SBI_SOM_PREVIEW) |
| data->ocd_connect_flags |= OBD_CONNECT_SOM; |
| |
| if (!OBD_FAIL_CHECK(OBD_FAIL_OSC_CONNECT_CKSUM)) { |
| /* OBD_CONNECT_CKSUM should always be set, even if checksums are |
| * disabled by default, because it can still be enabled on the |
| * fly via /sys. As a consequence, we still need to come to an |
| * agreement on the supported algorithms at connect time */ |
| data->ocd_connect_flags |= OBD_CONNECT_CKSUM; |
| |
| if (OBD_FAIL_CHECK(OBD_FAIL_OSC_CKSUM_ADLER_ONLY)) |
| data->ocd_cksum_types = OBD_CKSUM_ADLER; |
| else |
| data->ocd_cksum_types = cksum_types_supported_client(); |
| } |
| |
| data->ocd_connect_flags |= OBD_CONNECT_LRU_RESIZE; |
| if (sbi->ll_flags & LL_SBI_RMT_CLIENT) |
| data->ocd_connect_flags |= OBD_CONNECT_RMT_CLIENT_FORCE; |
| |
| CDEBUG(D_RPCTRACE, "ocd_connect_flags: %#llx ocd_version: %d ocd_grant: %d\n", |
| data->ocd_connect_flags, |
| data->ocd_version, data->ocd_grant); |
| |
| obd->obd_upcall.onu_owner = &sbi->ll_lco; |
| obd->obd_upcall.onu_upcall = cl_ocd_update; |
| |
| data->ocd_brw_size = DT_MAX_BRW_SIZE; |
| |
| err = obd_connect(NULL, &sbi->ll_dt_exp, obd, &sbi->ll_sb_uuid, data, |
| NULL); |
| if (err == -EBUSY) { |
| LCONSOLE_ERROR_MSG(0x150, "An OST (dt %s) is performing recovery, of which this client is not a part. Please wait for recovery to complete, abort, or time out.\n", |
| dt); |
| goto out_md; |
| } else if (err) { |
| CERROR("%s: Cannot connect to %s: rc = %d\n", |
| sbi->ll_dt_exp->exp_obd->obd_name, dt, err); |
| goto out_md; |
| } |
| |
| sbi->ll_dt_exp->exp_connect_data = *data; |
| |
| err = obd_fid_init(sbi->ll_dt_exp->exp_obd, sbi->ll_dt_exp, |
| LUSTRE_SEQ_METADATA); |
| if (err) { |
| CERROR("%s: Can't init data layer FID infrastructure, rc = %d\n", |
| sbi->ll_dt_exp->exp_obd->obd_name, err); |
| goto out_dt; |
| } |
| |
| mutex_lock(&sbi->ll_lco.lco_lock); |
| sbi->ll_lco.lco_flags = data->ocd_connect_flags; |
| sbi->ll_lco.lco_md_exp = sbi->ll_md_exp; |
| sbi->ll_lco.lco_dt_exp = sbi->ll_dt_exp; |
| mutex_unlock(&sbi->ll_lco.lco_lock); |
| |
| fid_zero(&sbi->ll_root_fid); |
| err = md_getstatus(sbi->ll_md_exp, &sbi->ll_root_fid, &oc); |
| if (err) { |
| CERROR("cannot mds_connect: rc = %d\n", err); |
| goto out_lock_cn_cb; |
| } |
| if (!fid_is_sane(&sbi->ll_root_fid)) { |
| CERROR("%s: Invalid root fid "DFID" during mount\n", |
| sbi->ll_md_exp->exp_obd->obd_name, |
| PFID(&sbi->ll_root_fid)); |
| err = -EINVAL; |
| goto out_lock_cn_cb; |
| } |
| CDEBUG(D_SUPER, "rootfid "DFID"\n", PFID(&sbi->ll_root_fid)); |
| |
| sb->s_op = &lustre_super_operations; |
| #if THREAD_SIZE >= 8192 /*b=17630*/ |
| sb->s_export_op = &lustre_export_operations; |
| #endif |
| |
| /* make root inode |
| * XXX: move this to after cbd setup? */ |
| valid = OBD_MD_FLGETATTR | OBD_MD_FLBLOCKS | OBD_MD_FLMDSCAPA; |
| if (sbi->ll_flags & LL_SBI_RMT_CLIENT) |
| valid |= OBD_MD_FLRMTPERM; |
| else if (sbi->ll_flags & LL_SBI_ACL) |
| valid |= OBD_MD_FLACL; |
| |
| op_data = kzalloc(sizeof(*op_data), GFP_NOFS); |
| if (!op_data) { |
| err = -ENOMEM; |
| goto out_lock_cn_cb; |
| } |
| |
| op_data->op_fid1 = sbi->ll_root_fid; |
| op_data->op_mode = 0; |
| op_data->op_capa1 = oc; |
| op_data->op_valid = valid; |
| |
| err = md_getattr(sbi->ll_md_exp, op_data, &request); |
| if (oc) |
| capa_put(oc); |
| kfree(op_data); |
| if (err) { |
| CERROR("%s: md_getattr failed for root: rc = %d\n", |
| sbi->ll_md_exp->exp_obd->obd_name, err); |
| goto out_lock_cn_cb; |
| } |
| |
| err = md_get_lustre_md(sbi->ll_md_exp, request, sbi->ll_dt_exp, |
| sbi->ll_md_exp, &lmd); |
| if (err) { |
| CERROR("failed to understand root inode md: rc = %d\n", err); |
| ptlrpc_req_finished(request); |
| goto out_lock_cn_cb; |
| } |
| |
| LASSERT(fid_is_sane(&sbi->ll_root_fid)); |
| root = ll_iget(sb, cl_fid_build_ino(&sbi->ll_root_fid, |
| sbi->ll_flags & LL_SBI_32BIT_API), |
| &lmd); |
| md_free_lustre_md(sbi->ll_md_exp, &lmd); |
| ptlrpc_req_finished(request); |
| |
| if (root == NULL || IS_ERR(root)) { |
| if (lmd.lsm) |
| obd_free_memmd(sbi->ll_dt_exp, &lmd.lsm); |
| #ifdef CONFIG_FS_POSIX_ACL |
| if (lmd.posix_acl) { |
| posix_acl_release(lmd.posix_acl); |
| lmd.posix_acl = NULL; |
| } |
| #endif |
| err = IS_ERR(root) ? PTR_ERR(root) : -EBADF; |
| root = NULL; |
| CERROR("lustre_lite: bad iget4 for root\n"); |
| goto out_root; |
| } |
| |
| err = ll_close_thread_start(&sbi->ll_lcq); |
| if (err) { |
| CERROR("cannot start close thread: rc %d\n", err); |
| goto out_root; |
| } |
| |
| #ifdef CONFIG_FS_POSIX_ACL |
| if (sbi->ll_flags & LL_SBI_RMT_CLIENT) { |
| rct_init(&sbi->ll_rct); |
| et_init(&sbi->ll_et); |
| } |
| #endif |
| |
| checksum = sbi->ll_flags & LL_SBI_CHECKSUM; |
| err = obd_set_info_async(NULL, sbi->ll_dt_exp, sizeof(KEY_CHECKSUM), |
| KEY_CHECKSUM, sizeof(checksum), &checksum, |
| NULL); |
| cl_sb_init(sb); |
| |
| err = obd_set_info_async(NULL, sbi->ll_dt_exp, sizeof(KEY_CACHE_SET), |
| KEY_CACHE_SET, sizeof(sbi->ll_cache), |
| &sbi->ll_cache, NULL); |
| |
| sb->s_root = d_make_root(root); |
| if (sb->s_root == NULL) { |
| CERROR("%s: can't make root dentry\n", |
| ll_get_fsname(sb, NULL, 0)); |
| err = -ENOMEM; |
| goto out_lock_cn_cb; |
| } |
| |
| sbi->ll_sdev_orig = sb->s_dev; |
| |
| /* We set sb->s_dev equal on all lustre clients in order to support |
| * NFS export clustering. NFSD requires that the FSID be the same |
| * on all clients. */ |
| /* s_dev is also used in lt_compare() to compare two fs, but that is |
| * only a node-local comparison. */ |
| uuid = obd_get_uuid(sbi->ll_md_exp); |
| if (uuid != NULL) { |
| sb->s_dev = get_uuid2int(uuid->uuid, strlen(uuid->uuid)); |
| get_uuid2fsid(uuid->uuid, strlen(uuid->uuid), &sbi->ll_fsid); |
| } |
| |
| kfree(data); |
| kfree(osfs); |
| |
| return err; |
| out_root: |
| iput(root); |
| out_lock_cn_cb: |
| obd_fid_fini(sbi->ll_dt_exp->exp_obd); |
| out_dt: |
| obd_disconnect(sbi->ll_dt_exp); |
| sbi->ll_dt_exp = NULL; |
| /* Make sure all OScs are gone, since cl_cache is accessing sbi. */ |
| obd_zombie_barrier(); |
| out_md_fid: |
| obd_fid_fini(sbi->ll_md_exp->exp_obd); |
| out_md: |
| obd_disconnect(sbi->ll_md_exp); |
| sbi->ll_md_exp = NULL; |
| out: |
| kfree(data); |
| kfree(osfs); |
| ldebugfs_unregister_mountpoint(sbi); |
| return err; |
| } |
| |
| int ll_get_max_mdsize(struct ll_sb_info *sbi, int *lmmsize) |
| { |
| int size, rc; |
| |
| *lmmsize = obd_size_diskmd(sbi->ll_dt_exp, NULL); |
| size = sizeof(int); |
| rc = obd_get_info(NULL, sbi->ll_md_exp, sizeof(KEY_MAX_EASIZE), |
| KEY_MAX_EASIZE, &size, lmmsize, NULL); |
| if (rc) |
| CERROR("Get max mdsize error rc %d\n", rc); |
| |
| return rc; |
| } |
| |
| int ll_get_default_mdsize(struct ll_sb_info *sbi, int *lmmsize) |
| { |
| int size, rc; |
| |
| size = sizeof(int); |
| rc = obd_get_info(NULL, sbi->ll_md_exp, sizeof(KEY_DEFAULT_EASIZE), |
| KEY_DEFAULT_EASIZE, &size, lmmsize, NULL); |
| if (rc) |
| CERROR("Get default mdsize error rc %d\n", rc); |
| |
| return rc; |
| } |
| |
| int ll_get_max_cookiesize(struct ll_sb_info *sbi, int *lmmsize) |
| { |
| int size, rc; |
| |
| size = sizeof(int); |
| rc = obd_get_info(NULL, sbi->ll_md_exp, sizeof(KEY_MAX_COOKIESIZE), |
| KEY_MAX_COOKIESIZE, &size, lmmsize, NULL); |
| if (rc) |
| CERROR("Get max cookiesize error rc %d\n", rc); |
| |
| return rc; |
| } |
| |
| int ll_get_default_cookiesize(struct ll_sb_info *sbi, int *lmmsize) |
| { |
| int size, rc; |
| |
| size = sizeof(int); |
| rc = obd_get_info(NULL, sbi->ll_md_exp, sizeof(KEY_DEFAULT_COOKIESIZE), |
| KEY_DEFAULT_COOKIESIZE, &size, lmmsize, NULL); |
| if (rc) |
| CERROR("Get default cookiesize error rc %d\n", rc); |
| |
| return rc; |
| } |
| |
| static void client_common_put_super(struct super_block *sb) |
| { |
| struct ll_sb_info *sbi = ll_s2sbi(sb); |
| |
| #ifdef CONFIG_FS_POSIX_ACL |
| if (sbi->ll_flags & LL_SBI_RMT_CLIENT) { |
| et_fini(&sbi->ll_et); |
| rct_fini(&sbi->ll_rct); |
| } |
| #endif |
| |
| ll_close_thread_shutdown(sbi->ll_lcq); |
| |
| cl_sb_fini(sb); |
| |
| list_del(&sbi->ll_conn_chain); |
| |
| obd_fid_fini(sbi->ll_dt_exp->exp_obd); |
| obd_disconnect(sbi->ll_dt_exp); |
| sbi->ll_dt_exp = NULL; |
| /* wait till all OSCs are gone, since cl_cache is accessing sbi. |
| * see LU-2543. */ |
| obd_zombie_barrier(); |
| |
| ldebugfs_unregister_mountpoint(sbi); |
| |
| obd_fid_fini(sbi->ll_md_exp->exp_obd); |
| obd_disconnect(sbi->ll_md_exp); |
| sbi->ll_md_exp = NULL; |
| } |
| |
| void ll_kill_super(struct super_block *sb) |
| { |
| struct ll_sb_info *sbi; |
| |
| /* not init sb ?*/ |
| if (!(sb->s_flags & MS_ACTIVE)) |
| return; |
| |
| sbi = ll_s2sbi(sb); |
| /* we need to restore s_dev from changed for clustered NFS before |
| * put_super because new kernels have cached s_dev and change sb->s_dev |
| * in put_super not affected real removing devices */ |
| if (sbi) { |
| sb->s_dev = sbi->ll_sdev_orig; |
| sbi->ll_umounting = 1; |
| } |
| } |
| |
| static inline int ll_set_opt(const char *opt, char *data, int fl) |
| { |
| if (strncmp(opt, data, strlen(opt)) != 0) |
| return 0; |
| else |
| return fl; |
| } |
| |
| /* non-client-specific mount options are parsed in lmd_parse */ |
| static int ll_options(char *options, int *flags) |
| { |
| int tmp; |
| char *s1 = options, *s2; |
| |
| if (!options) |
| return 0; |
| |
| CDEBUG(D_CONFIG, "Parsing opts %s\n", options); |
| |
| while (*s1) { |
| CDEBUG(D_SUPER, "next opt=%s\n", s1); |
| tmp = ll_set_opt("nolock", s1, LL_SBI_NOLCK); |
| if (tmp) { |
| *flags |= tmp; |
| goto next; |
| } |
| tmp = ll_set_opt("flock", s1, LL_SBI_FLOCK); |
| if (tmp) { |
| *flags |= tmp; |
| goto next; |
| } |
| tmp = ll_set_opt("localflock", s1, LL_SBI_LOCALFLOCK); |
| if (tmp) { |
| *flags |= tmp; |
| goto next; |
| } |
| tmp = ll_set_opt("noflock", s1, LL_SBI_FLOCK|LL_SBI_LOCALFLOCK); |
| if (tmp) { |
| *flags &= ~tmp; |
| goto next; |
| } |
| tmp = ll_set_opt("user_xattr", s1, LL_SBI_USER_XATTR); |
| if (tmp) { |
| *flags |= tmp; |
| goto next; |
| } |
| tmp = ll_set_opt("nouser_xattr", s1, LL_SBI_USER_XATTR); |
| if (tmp) { |
| *flags &= ~tmp; |
| goto next; |
| } |
| tmp = ll_set_opt("remote_client", s1, LL_SBI_RMT_CLIENT); |
| if (tmp) { |
| *flags |= tmp; |
| goto next; |
| } |
| tmp = ll_set_opt("user_fid2path", s1, LL_SBI_USER_FID2PATH); |
| if (tmp) { |
| *flags |= tmp; |
| goto next; |
| } |
| tmp = ll_set_opt("nouser_fid2path", s1, LL_SBI_USER_FID2PATH); |
| if (tmp) { |
| *flags &= ~tmp; |
| goto next; |
| } |
| |
| tmp = ll_set_opt("checksum", s1, LL_SBI_CHECKSUM); |
| if (tmp) { |
| *flags |= tmp; |
| goto next; |
| } |
| tmp = ll_set_opt("nochecksum", s1, LL_SBI_CHECKSUM); |
| if (tmp) { |
| *flags &= ~tmp; |
| goto next; |
| } |
| tmp = ll_set_opt("lruresize", s1, LL_SBI_LRU_RESIZE); |
| if (tmp) { |
| *flags |= tmp; |
| goto next; |
| } |
| tmp = ll_set_opt("nolruresize", s1, LL_SBI_LRU_RESIZE); |
| if (tmp) { |
| *flags &= ~tmp; |
| goto next; |
| } |
| tmp = ll_set_opt("lazystatfs", s1, LL_SBI_LAZYSTATFS); |
| if (tmp) { |
| *flags |= tmp; |
| goto next; |
| } |
| tmp = ll_set_opt("nolazystatfs", s1, LL_SBI_LAZYSTATFS); |
| if (tmp) { |
| *flags &= ~tmp; |
| goto next; |
| } |
| tmp = ll_set_opt("som_preview", s1, LL_SBI_SOM_PREVIEW); |
| if (tmp) { |
| *flags |= tmp; |
| goto next; |
| } |
| tmp = ll_set_opt("32bitapi", s1, LL_SBI_32BIT_API); |
| if (tmp) { |
| *flags |= tmp; |
| goto next; |
| } |
| tmp = ll_set_opt("verbose", s1, LL_SBI_VERBOSE); |
| if (tmp) { |
| *flags |= tmp; |
| goto next; |
| } |
| tmp = ll_set_opt("noverbose", s1, LL_SBI_VERBOSE); |
| if (tmp) { |
| *flags &= ~tmp; |
| goto next; |
| } |
| LCONSOLE_ERROR_MSG(0x152, "Unknown option '%s', won't mount.\n", |
| s1); |
| return -EINVAL; |
| |
| next: |
| /* Find next opt */ |
| s2 = strchr(s1, ','); |
| if (s2 == NULL) |
| break; |
| s1 = s2 + 1; |
| } |
| return 0; |
| } |
| |
| void ll_lli_init(struct ll_inode_info *lli) |
| { |
| lli->lli_inode_magic = LLI_INODE_MAGIC; |
| lli->lli_flags = 0; |
| lli->lli_ioepoch = 0; |
| lli->lli_maxbytes = MAX_LFS_FILESIZE; |
| spin_lock_init(&lli->lli_lock); |
| lli->lli_posix_acl = NULL; |
| lli->lli_remote_perms = NULL; |
| mutex_init(&lli->lli_rmtperm_mutex); |
| /* Do not set lli_fid, it has been initialized already. */ |
| fid_zero(&lli->lli_pfid); |
| INIT_LIST_HEAD(&lli->lli_close_list); |
| INIT_LIST_HEAD(&lli->lli_oss_capas); |
| atomic_set(&lli->lli_open_count, 0); |
| lli->lli_mds_capa = NULL; |
| lli->lli_rmtperm_time = 0; |
| lli->lli_pending_och = NULL; |
| lli->lli_mds_read_och = NULL; |
| lli->lli_mds_write_och = NULL; |
| lli->lli_mds_exec_och = NULL; |
| lli->lli_open_fd_read_count = 0; |
| lli->lli_open_fd_write_count = 0; |
| lli->lli_open_fd_exec_count = 0; |
| mutex_init(&lli->lli_och_mutex); |
| spin_lock_init(&lli->lli_agl_lock); |
| lli->lli_has_smd = false; |
| spin_lock_init(&lli->lli_layout_lock); |
| ll_layout_version_set(lli, LL_LAYOUT_GEN_NONE); |
| lli->lli_clob = NULL; |
| |
| init_rwsem(&lli->lli_xattrs_list_rwsem); |
| mutex_init(&lli->lli_xattrs_enq_lock); |
| |
| LASSERT(lli->lli_vfs_inode.i_mode != 0); |
| if (S_ISDIR(lli->lli_vfs_inode.i_mode)) { |
| mutex_init(&lli->lli_readdir_mutex); |
| lli->lli_opendir_key = NULL; |
| lli->lli_sai = NULL; |
| spin_lock_init(&lli->lli_sa_lock); |
| lli->lli_opendir_pid = 0; |
| } else { |
| mutex_init(&lli->lli_size_mutex); |
| lli->lli_symlink_name = NULL; |
| init_rwsem(&lli->lli_trunc_sem); |
| mutex_init(&lli->lli_write_mutex); |
| init_rwsem(&lli->lli_glimpse_sem); |
| lli->lli_glimpse_time = 0; |
| INIT_LIST_HEAD(&lli->lli_agl_list); |
| lli->lli_agl_index = 0; |
| lli->lli_async_rc = 0; |
| } |
| mutex_init(&lli->lli_layout_mutex); |
| } |
| |
| static inline int ll_bdi_register(struct backing_dev_info *bdi) |
| { |
| static atomic_t ll_bdi_num = ATOMIC_INIT(0); |
| |
| bdi->name = "lustre"; |
| return bdi_register(bdi, NULL, "lustre-%d", |
| atomic_inc_return(&ll_bdi_num)); |
| } |
| |
| int ll_fill_super(struct super_block *sb, struct vfsmount *mnt) |
| { |
| struct lustre_profile *lprof = NULL; |
| struct lustre_sb_info *lsi = s2lsi(sb); |
| struct ll_sb_info *sbi; |
| char *dt = NULL, *md = NULL; |
| char *profilenm = get_profile_name(sb); |
| struct config_llog_instance *cfg; |
| int err; |
| |
| CDEBUG(D_VFSTRACE, "VFS Op: sb %p\n", sb); |
| |
| cfg = kzalloc(sizeof(*cfg), GFP_NOFS); |
| if (!cfg) |
| return -ENOMEM; |
| |
| try_module_get(THIS_MODULE); |
| |
| /* client additional sb info */ |
| lsi->lsi_llsbi = sbi = ll_init_sbi(sb); |
| if (!sbi) { |
| module_put(THIS_MODULE); |
| kfree(cfg); |
| return -ENOMEM; |
| } |
| |
| err = ll_options(lsi->lsi_lmd->lmd_opts, &sbi->ll_flags); |
| if (err) |
| goto out_free; |
| |
| err = bdi_init(&lsi->lsi_bdi); |
| if (err) |
| goto out_free; |
| lsi->lsi_flags |= LSI_BDI_INITIALIZED; |
| lsi->lsi_bdi.capabilities = 0; |
| err = ll_bdi_register(&lsi->lsi_bdi); |
| if (err) |
| goto out_free; |
| |
| sb->s_bdi = &lsi->lsi_bdi; |
| /* kernel >= 2.6.38 store dentry operations in sb->s_d_op. */ |
| sb->s_d_op = &ll_d_ops; |
| |
| /* Generate a string unique to this super, in case some joker tries |
| to mount the same fs at two mount points. |
| Use the address of the super itself.*/ |
| cfg->cfg_instance = sb; |
| cfg->cfg_uuid = lsi->lsi_llsbi->ll_sb_uuid; |
| cfg->cfg_callback = class_config_llog_handler; |
| /* set up client obds */ |
| err = lustre_process_log(sb, profilenm, cfg); |
| if (err < 0) { |
| CERROR("Unable to process log: %d\n", err); |
| goto out_free; |
| } |
| |
| /* Profile set with LCFG_MOUNTOPT so we can find our mdc and osc obds */ |
| lprof = class_get_profile(profilenm); |
| if (lprof == NULL) { |
| LCONSOLE_ERROR_MSG(0x156, "The client profile '%s' could not be read from the MGS. Does that filesystem exist?\n", |
| profilenm); |
| err = -EINVAL; |
| goto out_free; |
| } |
| CDEBUG(D_CONFIG, "Found profile %s: mdc=%s osc=%s\n", profilenm, |
| lprof->lp_md, lprof->lp_dt); |
| |
| dt = kasprintf(GFP_NOFS, "%s-%p", lprof->lp_dt, cfg->cfg_instance); |
| if (!dt) { |
| err = -ENOMEM; |
| goto out_free; |
| } |
| |
| md = kasprintf(GFP_NOFS, "%s-%p", lprof->lp_md, cfg->cfg_instance); |
| if (!md) { |
| err = -ENOMEM; |
| goto out_free; |
| } |
| |
| /* connections, registrations, sb setup */ |
| err = client_common_fill_super(sb, md, dt, mnt); |
| |
| out_free: |
| kfree(md); |
| kfree(dt); |
| if (err) |
| ll_put_super(sb); |
| else if (sbi->ll_flags & LL_SBI_VERBOSE) |
| LCONSOLE_WARN("Mounted %s\n", profilenm); |
| |
| kfree(cfg); |
| return err; |
| } /* ll_fill_super */ |
| |
| void ll_put_super(struct super_block *sb) |
| { |
| struct config_llog_instance cfg, params_cfg; |
| struct obd_device *obd; |
| struct lustre_sb_info *lsi = s2lsi(sb); |
| struct ll_sb_info *sbi = ll_s2sbi(sb); |
| char *profilenm = get_profile_name(sb); |
| int next, force = 1; |
| |
| CDEBUG(D_VFSTRACE, "VFS Op: sb %p - %s\n", sb, profilenm); |
| |
| ll_print_capa_stat(sbi); |
| |
| cfg.cfg_instance = sb; |
| lustre_end_log(sb, profilenm, &cfg); |
| |
| params_cfg.cfg_instance = sb; |
| lustre_end_log(sb, PARAMS_FILENAME, ¶ms_cfg); |
| |
| if (sbi->ll_md_exp) { |
| obd = class_exp2obd(sbi->ll_md_exp); |
| if (obd) |
| force = obd->obd_force; |
| } |
| |
| /* We need to set force before the lov_disconnect in |
| lustre_common_put_super, since l_d cleans up osc's as well. */ |
| if (force) { |
| next = 0; |
| while ((obd = class_devices_in_group(&sbi->ll_sb_uuid, |
| &next)) != NULL) { |
| obd->obd_force = force; |
| } |
| } |
| |
| if (sbi->ll_lcq) { |
| /* Only if client_common_fill_super succeeded */ |
| client_common_put_super(sb); |
| } |
| |
| next = 0; |
| while ((obd = class_devices_in_group(&sbi->ll_sb_uuid, &next))) |
| class_manual_cleanup(obd); |
| |
| if (sbi->ll_flags & LL_SBI_VERBOSE) |
| LCONSOLE_WARN("Unmounted %s\n", profilenm ? profilenm : ""); |
| |
| if (profilenm) |
| class_del_profile(profilenm); |
| |
| if (lsi->lsi_flags & LSI_BDI_INITIALIZED) { |
| bdi_destroy(&lsi->lsi_bdi); |
| lsi->lsi_flags &= ~LSI_BDI_INITIALIZED; |
| } |
| |
| ll_free_sbi(sb); |
| lsi->lsi_llsbi = NULL; |
| |
| lustre_common_put_super(sb); |
| |
| module_put(THIS_MODULE); |
| } /* client_put_super */ |
| |
| struct inode *ll_inode_from_resource_lock(struct ldlm_lock *lock) |
| { |
| struct inode *inode = NULL; |
| |
| /* NOTE: we depend on atomic igrab() -bzzz */ |
| lock_res_and_lock(lock); |
| if (lock->l_resource->lr_lvb_inode) { |
| struct ll_inode_info *lli; |
| |
| lli = ll_i2info(lock->l_resource->lr_lvb_inode); |
| if (lli->lli_inode_magic == LLI_INODE_MAGIC) { |
| inode = igrab(lock->l_resource->lr_lvb_inode); |
| } else { |
| inode = lock->l_resource->lr_lvb_inode; |
| LDLM_DEBUG_LIMIT(inode->i_state & I_FREEING ? D_INFO : |
| D_WARNING, lock, "lr_lvb_inode %p is bogus: magic %08x", |
| lock->l_resource->lr_lvb_inode, |
| lli->lli_inode_magic); |
| inode = NULL; |
| } |
| } |
| unlock_res_and_lock(lock); |
| return inode; |
| } |
| |
| void ll_clear_inode(struct inode *inode) |
| { |
| struct ll_inode_info *lli = ll_i2info(inode); |
| struct ll_sb_info *sbi = ll_i2sbi(inode); |
| |
| CDEBUG(D_VFSTRACE, "VFS Op:inode=%lu/%u(%p)\n", inode->i_ino, |
| inode->i_generation, inode); |
| |
| if (S_ISDIR(inode->i_mode)) { |
| /* these should have been cleared in ll_file_release */ |
| LASSERT(lli->lli_opendir_key == NULL); |
| LASSERT(lli->lli_sai == NULL); |
| LASSERT(lli->lli_opendir_pid == 0); |
| } |
| |
| spin_lock(&lli->lli_lock); |
| ll_i2info(inode)->lli_flags &= ~LLIF_MDS_SIZE_LOCK; |
| spin_unlock(&lli->lli_lock); |
| md_null_inode(sbi->ll_md_exp, ll_inode2fid(inode)); |
| |
| LASSERT(!lli->lli_open_fd_write_count); |
| LASSERT(!lli->lli_open_fd_read_count); |
| LASSERT(!lli->lli_open_fd_exec_count); |
| |
| if (lli->lli_mds_write_och) |
| ll_md_real_close(inode, FMODE_WRITE); |
| if (lli->lli_mds_exec_och) |
| ll_md_real_close(inode, FMODE_EXEC); |
| if (lli->lli_mds_read_och) |
| ll_md_real_close(inode, FMODE_READ); |
| |
| if (S_ISLNK(inode->i_mode) && lli->lli_symlink_name) { |
| kfree(lli->lli_symlink_name); |
| lli->lli_symlink_name = NULL; |
| } |
| |
| ll_xattr_cache_destroy(inode); |
| |
| if (sbi->ll_flags & LL_SBI_RMT_CLIENT) { |
| LASSERT(lli->lli_posix_acl == NULL); |
| if (lli->lli_remote_perms) { |
| free_rmtperm_hash(lli->lli_remote_perms); |
| lli->lli_remote_perms = NULL; |
| } |
| } |
| #ifdef CONFIG_FS_POSIX_ACL |
| else if (lli->lli_posix_acl) { |
| LASSERT(atomic_read(&lli->lli_posix_acl->a_refcount) == 1); |
| LASSERT(lli->lli_remote_perms == NULL); |
| posix_acl_release(lli->lli_posix_acl); |
| lli->lli_posix_acl = NULL; |
| } |
| #endif |
| lli->lli_inode_magic = LLI_INODE_DEAD; |
| |
| ll_clear_inode_capas(inode); |
| if (!S_ISDIR(inode->i_mode)) |
| LASSERT(list_empty(&lli->lli_agl_list)); |
| |
| /* |
| * XXX This has to be done before lsm is freed below, because |
| * cl_object still uses inode lsm. |
| */ |
| cl_inode_fini(inode); |
| lli->lli_has_smd = false; |
| } |
| |
| static int ll_md_setattr(struct dentry *dentry, struct md_op_data *op_data, |
| struct md_open_data **mod) |
| { |
| struct lustre_md md; |
| struct inode *inode = d_inode(dentry); |
| struct ll_sb_info *sbi = ll_i2sbi(inode); |
| struct ptlrpc_request *request = NULL; |
| int rc, ia_valid; |
| |
| op_data = ll_prep_md_op_data(op_data, inode, NULL, NULL, 0, 0, |
| LUSTRE_OPC_ANY, NULL); |
| if (IS_ERR(op_data)) |
| return PTR_ERR(op_data); |
| |
| rc = md_setattr(sbi->ll_md_exp, op_data, NULL, 0, NULL, 0, |
| &request, mod); |
| if (rc) { |
| ptlrpc_req_finished(request); |
| if (rc == -ENOENT) { |
| clear_nlink(inode); |
| /* Unlinked special device node? Or just a race? |
| * Pretend we done everything. */ |
| if (!S_ISREG(inode->i_mode) && |
| !S_ISDIR(inode->i_mode)) { |
| ia_valid = op_data->op_attr.ia_valid; |
| op_data->op_attr.ia_valid &= ~TIMES_SET_FLAGS; |
| rc = simple_setattr(dentry, &op_data->op_attr); |
| op_data->op_attr.ia_valid = ia_valid; |
| } |
| } else if (rc != -EPERM && rc != -EACCES && rc != -ETXTBSY) { |
| CERROR("md_setattr fails: rc = %d\n", rc); |
| } |
| return rc; |
| } |
| |
| rc = md_get_lustre_md(sbi->ll_md_exp, request, sbi->ll_dt_exp, |
| sbi->ll_md_exp, &md); |
| if (rc) { |
| ptlrpc_req_finished(request); |
| return rc; |
| } |
| |
| ia_valid = op_data->op_attr.ia_valid; |
| /* inode size will be in ll_setattr_ost, can't do it now since dirty |
| * cache is not cleared yet. */ |
| op_data->op_attr.ia_valid &= ~(TIMES_SET_FLAGS | ATTR_SIZE); |
| rc = simple_setattr(dentry, &op_data->op_attr); |
| op_data->op_attr.ia_valid = ia_valid; |
| |
| /* Extract epoch data if obtained. */ |
| op_data->op_handle = md.body->handle; |
| op_data->op_ioepoch = md.body->ioepoch; |
| |
| ll_update_inode(inode, &md); |
| ptlrpc_req_finished(request); |
| |
| return rc; |
| } |
| |
| /* Close IO epoch and send Size-on-MDS attribute update. */ |
| static int ll_setattr_done_writing(struct inode *inode, |
| struct md_op_data *op_data, |
| struct md_open_data *mod) |
| { |
| struct ll_inode_info *lli = ll_i2info(inode); |
| int rc = 0; |
| |
| LASSERT(op_data != NULL); |
| if (!S_ISREG(inode->i_mode)) |
| return 0; |
| |
| CDEBUG(D_INODE, "Epoch %llu closed on "DFID" for truncate\n", |
| op_data->op_ioepoch, PFID(&lli->lli_fid)); |
| |
| op_data->op_flags = MF_EPOCH_CLOSE; |
| ll_done_writing_attr(inode, op_data); |
| ll_pack_inode2opdata(inode, op_data, NULL); |
| |
| rc = md_done_writing(ll_i2sbi(inode)->ll_md_exp, op_data, mod); |
| if (rc == -EAGAIN) { |
| /* MDS has instructed us to obtain Size-on-MDS attribute |
| * from OSTs and send setattr to back to MDS. */ |
| rc = ll_som_update(inode, op_data); |
| } else if (rc) { |
| CERROR("inode %lu mdc truncate failed: rc = %d\n", |
| inode->i_ino, rc); |
| } |
| return rc; |
| } |
| |
| static int ll_setattr_ost(struct inode *inode, struct iattr *attr) |
| { |
| struct obd_capa *capa; |
| int rc; |
| |
| if (attr->ia_valid & ATTR_SIZE) |
| capa = ll_osscapa_get(inode, CAPA_OPC_OSS_TRUNC); |
| else |
| capa = ll_mdscapa_get(inode); |
| |
| rc = cl_setattr_ost(inode, attr, capa); |
| |
| if (attr->ia_valid & ATTR_SIZE) |
| ll_truncate_free_capa(capa); |
| else |
| capa_put(capa); |
| |
| return rc; |
| } |
| |
| |
| /* If this inode has objects allocated to it (lsm != NULL), then the OST |
| * object(s) determine the file size and mtime. Otherwise, the MDS will |
| * keep these values until such a time that objects are allocated for it. |
| * We do the MDS operations first, as it is checking permissions for us. |
| * We don't to the MDS RPC if there is nothing that we want to store there, |
| * otherwise there is no harm in updating mtime/atime on the MDS if we are |
| * going to do an RPC anyways. |
| * |
| * If we are doing a truncate, we will send the mtime and ctime updates |
| * to the OST with the punch RPC, otherwise we do an explicit setattr RPC. |
| * I don't believe it is possible to get e.g. ATTR_MTIME_SET and ATTR_SIZE |
| * at the same time. |
| * |
| * In case of HSMimport, we only set attr on MDS. |
| */ |
| int ll_setattr_raw(struct dentry *dentry, struct iattr *attr, bool hsm_import) |
| { |
| struct inode *inode = d_inode(dentry); |
| struct ll_inode_info *lli = ll_i2info(inode); |
| struct md_op_data *op_data = NULL; |
| struct md_open_data *mod = NULL; |
| bool file_is_released = false; |
| int rc = 0, rc1 = 0; |
| |
| CDEBUG(D_VFSTRACE, |
| "%s: setattr inode %p/fid:"DFID |
| " from %llu to %llu, valid %x, hsm_import %d\n", |
| ll_get_fsname(inode->i_sb, NULL, 0), inode, |
| PFID(&lli->lli_fid), i_size_read(inode), attr->ia_size, |
| attr->ia_valid, hsm_import); |
| |
| if (attr->ia_valid & ATTR_SIZE) { |
| /* Check new size against VFS/VM file size limit and rlimit */ |
| rc = inode_newsize_ok(inode, attr->ia_size); |
| if (rc) |
| return rc; |
| |
| /* The maximum Lustre file size is variable, based on the |
| * OST maximum object size and number of stripes. This |
| * needs another check in addition to the VFS check above. */ |
| if (attr->ia_size > ll_file_maxbytes(inode)) { |
| CDEBUG(D_INODE, "file "DFID" too large %llu > %llu\n", |
| PFID(&lli->lli_fid), attr->ia_size, |
| ll_file_maxbytes(inode)); |
| return -EFBIG; |
| } |
| |
| attr->ia_valid |= ATTR_MTIME | ATTR_CTIME; |
| } |
| |
| /* POSIX: check before ATTR_*TIME_SET set (from inode_change_ok) */ |
| if (attr->ia_valid & TIMES_SET_FLAGS) { |
| if ((!uid_eq(current_fsuid(), inode->i_uid)) && |
| !capable(CFS_CAP_FOWNER)) |
| return -EPERM; |
| } |
| |
| /* We mark all of the fields "set" so MDS/OST does not re-set them */ |
| if (attr->ia_valid & ATTR_CTIME) { |
| attr->ia_ctime = CURRENT_TIME; |
| attr->ia_valid |= ATTR_CTIME_SET; |
| } |
| if (!(attr->ia_valid & ATTR_ATIME_SET) && |
| (attr->ia_valid & ATTR_ATIME)) { |
| attr->ia_atime = CURRENT_TIME; |
| attr->ia_valid |= ATTR_ATIME_SET; |
| } |
| if (!(attr->ia_valid & ATTR_MTIME_SET) && |
| (attr->ia_valid & ATTR_MTIME)) { |
| attr->ia_mtime = CURRENT_TIME; |
| attr->ia_valid |= ATTR_MTIME_SET; |
| } |
| |
| if (attr->ia_valid & (ATTR_MTIME | ATTR_CTIME)) |
| CDEBUG(D_INODE, "setting mtime %lu, ctime %lu, now = %lu\n", |
| LTIME_S(attr->ia_mtime), LTIME_S(attr->ia_ctime), |
| get_seconds()); |
| |
| /* If we are changing file size, file content is modified, flag it. */ |
| if (attr->ia_valid & ATTR_SIZE) { |
| attr->ia_valid |= MDS_OPEN_OWNEROVERRIDE; |
| spin_lock(&lli->lli_lock); |
| lli->lli_flags |= LLIF_DATA_MODIFIED; |
| spin_unlock(&lli->lli_lock); |
| } |
| |
| /* We always do an MDS RPC, even if we're only changing the size; |
| * only the MDS knows whether truncate() should fail with -ETXTBUSY */ |
| |
| op_data = kzalloc(sizeof(*op_data), GFP_NOFS); |
| if (!op_data) |
| return -ENOMEM; |
| |
| if (!S_ISDIR(inode->i_mode)) { |
| if (attr->ia_valid & ATTR_SIZE) |
| inode_dio_write_done(inode); |
| mutex_unlock(&inode->i_mutex); |
| } |
| |
| memcpy(&op_data->op_attr, attr, sizeof(*attr)); |
| |
| /* Open epoch for truncate. */ |
| if (exp_connect_som(ll_i2mdexp(inode)) && |
| (attr->ia_valid & (ATTR_SIZE | ATTR_MTIME | ATTR_MTIME_SET))) |
| op_data->op_flags = MF_EPOCH_OPEN; |
| |
| /* truncate on a released file must failed with -ENODATA, |
| * so size must not be set on MDS for released file |
| * but other attributes must be set |
| */ |
| if (S_ISREG(inode->i_mode)) { |
| struct lov_stripe_md *lsm; |
| __u32 gen; |
| |
| ll_layout_refresh(inode, &gen); |
| lsm = ccc_inode_lsm_get(inode); |
| if (lsm && lsm->lsm_pattern & LOV_PATTERN_F_RELEASED) |
| file_is_released = true; |
| ccc_inode_lsm_put(inode, lsm); |
| } |
| |
| /* if not in HSM import mode, clear size attr for released file |
| * we clear the attribute send to MDT in op_data, not the original |
| * received from caller in attr which is used later to |
| * decide return code */ |
| if (file_is_released && (attr->ia_valid & ATTR_SIZE) && !hsm_import) |
| op_data->op_attr.ia_valid &= ~ATTR_SIZE; |
| |
| rc = ll_md_setattr(dentry, op_data, &mod); |
| if (rc) |
| goto out; |
| |
| /* truncate failed (only when non HSM import), others succeed */ |
| if (file_is_released) { |
| if ((attr->ia_valid & ATTR_SIZE) && !hsm_import) |
| rc = -ENODATA; |
| else |
| rc = 0; |
| goto out; |
| } |
| |
| /* RPC to MDT is sent, cancel data modification flag */ |
| if (rc == 0 && (op_data->op_bias & MDS_DATA_MODIFIED)) { |
| spin_lock(&lli->lli_lock); |
| lli->lli_flags &= ~LLIF_DATA_MODIFIED; |
| spin_unlock(&lli->lli_lock); |
| } |
| |
| ll_ioepoch_open(lli, op_data->op_ioepoch); |
| if (!S_ISREG(inode->i_mode)) { |
| rc = 0; |
| goto out; |
| } |
| |
| if (attr->ia_valid & (ATTR_SIZE | |
| ATTR_ATIME | ATTR_ATIME_SET | |
| ATTR_MTIME | ATTR_MTIME_SET)) { |
| /* For truncate and utimes sending attributes to OSTs, setting |
| * mtime/atime to the past will be performed under PW [0:EOF] |
| * extent lock (new_size:EOF for truncate). It may seem |
| * excessive to send mtime/atime updates to OSTs when not |
| * setting times to past, but it is necessary due to possible |
| * time de-synchronization between MDT inode and OST objects */ |
| if (attr->ia_valid & ATTR_SIZE) |
| down_write(&lli->lli_trunc_sem); |
| rc = ll_setattr_ost(inode, attr); |
| if (attr->ia_valid & ATTR_SIZE) |
| up_write(&lli->lli_trunc_sem); |
| } |
| out: |
| if (op_data) { |
| if (op_data->op_ioepoch) { |
| rc1 = ll_setattr_done_writing(inode, op_data, mod); |
| if (!rc) |
| rc = rc1; |
| } |
| ll_finish_md_op_data(op_data); |
| } |
| if (!S_ISDIR(inode->i_mode)) { |
| mutex_lock(&inode->i_mutex); |
| if ((attr->ia_valid & ATTR_SIZE) && !hsm_import) |
| inode_dio_wait(inode); |
| } |
| |
| ll_stats_ops_tally(ll_i2sbi(inode), (attr->ia_valid & ATTR_SIZE) ? |
| LPROC_LL_TRUNC : LPROC_LL_SETATTR, 1); |
| |
| return rc; |
| } |
| |
| int ll_setattr(struct dentry *de, struct iattr *attr) |
| { |
| int mode = d_inode(de)->i_mode; |
| |
| if ((attr->ia_valid & (ATTR_CTIME|ATTR_SIZE|ATTR_MODE)) == |
| (ATTR_CTIME|ATTR_SIZE|ATTR_MODE)) |
| attr->ia_valid |= MDS_OPEN_OWNEROVERRIDE; |
| |
| if (((attr->ia_valid & (ATTR_MODE|ATTR_FORCE|ATTR_SIZE)) == |
| (ATTR_SIZE|ATTR_MODE)) && |
| (((mode & S_ISUID) && !(attr->ia_mode & S_ISUID)) || |
| (((mode & (S_ISGID|S_IXGRP)) == (S_ISGID|S_IXGRP)) && |
| !(attr->ia_mode & S_ISGID)))) |
| attr->ia_valid |= ATTR_FORCE; |
| |
| if ((attr->ia_valid & ATTR_MODE) && |
| (mode & S_ISUID) && |
| !(attr->ia_mode & S_ISUID) && |
| !(attr->ia_valid & ATTR_KILL_SUID)) |
| attr->ia_valid |= ATTR_KILL_SUID; |
| |
| if ((attr->ia_valid & ATTR_MODE) && |
| ((mode & (S_ISGID|S_IXGRP)) == (S_ISGID|S_IXGRP)) && |
| !(attr->ia_mode & S_ISGID) && |
| !(attr->ia_valid & ATTR_KILL_SGID)) |
| attr->ia_valid |= ATTR_KILL_SGID; |
| |
| return ll_setattr_raw(de, attr, false); |
| } |
| |
| int ll_statfs_internal(struct super_block *sb, struct obd_statfs *osfs, |
| __u64 max_age, __u32 flags) |
| { |
| struct ll_sb_info *sbi = ll_s2sbi(sb); |
| struct obd_statfs obd_osfs; |
| int rc; |
| |
| rc = obd_statfs(NULL, sbi->ll_md_exp, osfs, max_age, flags); |
| if (rc) { |
| CERROR("md_statfs fails: rc = %d\n", rc); |
| return rc; |
| } |
| |
| osfs->os_type = sb->s_magic; |
| |
| CDEBUG(D_SUPER, "MDC blocks %llu/%llu objects %llu/%llu\n", |
| osfs->os_bavail, osfs->os_blocks, osfs->os_ffree, |
| osfs->os_files); |
| |
| if (sbi->ll_flags & LL_SBI_LAZYSTATFS) |
| flags |= OBD_STATFS_NODELAY; |
| |
| rc = obd_statfs_rqset(sbi->ll_dt_exp, &obd_osfs, max_age, flags); |
| if (rc) { |
| CERROR("obd_statfs fails: rc = %d\n", rc); |
| return rc; |
| } |
| |
| CDEBUG(D_SUPER, "OSC blocks %llu/%llu objects %llu/%llu\n", |
| obd_osfs.os_bavail, obd_osfs.os_blocks, obd_osfs.os_ffree, |
| obd_osfs.os_files); |
| |
| osfs->os_bsize = obd_osfs.os_bsize; |
| osfs->os_blocks = obd_osfs.os_blocks; |
| osfs->os_bfree = obd_osfs.os_bfree; |
| osfs->os_bavail = obd_osfs.os_bavail; |
| |
| /* If we don't have as many objects free on the OST as inodes |
| * on the MDS, we reduce the total number of inodes to |
| * compensate, so that the "inodes in use" number is correct. |
| */ |
| if (obd_osfs.os_ffree < osfs->os_ffree) { |
| osfs->os_files = (osfs->os_files - osfs->os_ffree) + |
| obd_osfs.os_ffree; |
| osfs->os_ffree = obd_osfs.os_ffree; |
| } |
| |
| return rc; |
| } |
| int ll_statfs(struct dentry *de, struct kstatfs *sfs) |
| { |
| struct super_block *sb = de->d_sb; |
| struct obd_statfs osfs; |
| int rc; |
| |
| CDEBUG(D_VFSTRACE, "VFS Op: at %llu jiffies\n", get_jiffies_64()); |
| ll_stats_ops_tally(ll_s2sbi(sb), LPROC_LL_STAFS, 1); |
| |
| /* Some amount of caching on the client is allowed */ |
| rc = ll_statfs_internal(sb, &osfs, |
| cfs_time_shift_64(-OBD_STATFS_CACHE_SECONDS), |
| 0); |
| if (rc) |
| return rc; |
| |
| statfs_unpack(sfs, &osfs); |
| |
| /* We need to downshift for all 32-bit kernels, because we can't |
| * tell if the kernel is being called via sys_statfs64() or not. |
| * Stop before overflowing f_bsize - in which case it is better |
| * to just risk EOVERFLOW if caller is using old sys_statfs(). */ |
| if (sizeof(long) < 8) { |
| while (osfs.os_blocks > ~0UL && sfs->f_bsize < 0x40000000) { |
| sfs->f_bsize <<= 1; |
| |
| osfs.os_blocks >>= 1; |
| osfs.os_bfree >>= 1; |
| osfs.os_bavail >>= 1; |
| } |
| } |
| |
| sfs->f_blocks = osfs.os_blocks; |
| sfs->f_bfree = osfs.os_bfree; |
| sfs->f_bavail = osfs.os_bavail; |
| sfs->f_fsid = ll_s2sbi(sb)->ll_fsid; |
| return 0; |
| } |
| |
| void ll_inode_size_lock(struct inode *inode) |
| { |
| struct ll_inode_info *lli; |
| |
| LASSERT(!S_ISDIR(inode->i_mode)); |
| |
| lli = ll_i2info(inode); |
| mutex_lock(&lli->lli_size_mutex); |
| } |
| |
| void ll_inode_size_unlock(struct inode *inode) |
| { |
| struct ll_inode_info *lli; |
| |
| lli = ll_i2info(inode); |
| mutex_unlock(&lli->lli_size_mutex); |
| } |
| |
| void ll_update_inode(struct inode *inode, struct lustre_md *md) |
| { |
| struct ll_inode_info *lli = ll_i2info(inode); |
| struct mdt_body *body = md->body; |
| struct lov_stripe_md *lsm = md->lsm; |
| struct ll_sb_info *sbi = ll_i2sbi(inode); |
| |
| LASSERT((lsm != NULL) == ((body->valid & OBD_MD_FLEASIZE) != 0)); |
| if (lsm != NULL) { |
| if (!lli->lli_has_smd && |
| !(sbi->ll_flags & LL_SBI_LAYOUT_LOCK)) |
| cl_file_inode_init(inode, md); |
| |
| lli->lli_maxbytes = lsm->lsm_maxbytes; |
| if (lli->lli_maxbytes > MAX_LFS_FILESIZE) |
| lli->lli_maxbytes = MAX_LFS_FILESIZE; |
| } |
| |
| if (sbi->ll_flags & LL_SBI_RMT_CLIENT) { |
| if (body->valid & OBD_MD_FLRMTPERM) |
| ll_update_remote_perm(inode, md->remote_perm); |
| } |
| #ifdef CONFIG_FS_POSIX_ACL |
| else if (body->valid & OBD_MD_FLACL) { |
| spin_lock(&lli->lli_lock); |
| if (lli->lli_posix_acl) |
| posix_acl_release(lli->lli_posix_acl); |
| lli->lli_posix_acl = md->posix_acl; |
| spin_unlock(&lli->lli_lock); |
| } |
| #endif |
| inode->i_ino = cl_fid_build_ino(&body->fid1, |
| sbi->ll_flags & LL_SBI_32BIT_API); |
| inode->i_generation = cl_fid_build_gen(&body->fid1); |
| |
| if (body->valid & OBD_MD_FLATIME) { |
| if (body->atime > LTIME_S(inode->i_atime)) |
| LTIME_S(inode->i_atime) = body->atime; |
| lli->lli_lvb.lvb_atime = body->atime; |
| } |
| if (body->valid & OBD_MD_FLMTIME) { |
| if (body->mtime > LTIME_S(inode->i_mtime)) { |
| CDEBUG(D_INODE, "setting ino %lu mtime from %lu to %llu\n", |
| inode->i_ino, LTIME_S(inode->i_mtime), |
| body->mtime); |
| LTIME_S(inode->i_mtime) = body->mtime; |
| } |
| lli->lli_lvb.lvb_mtime = body->mtime; |
| } |
| if (body->valid & OBD_MD_FLCTIME) { |
| if (body->ctime > LTIME_S(inode->i_ctime)) |
| LTIME_S(inode->i_ctime) = body->ctime; |
| lli->lli_lvb.lvb_ctime = body->ctime; |
| } |
| if (body->valid & OBD_MD_FLMODE) |
| inode->i_mode = (inode->i_mode & S_IFMT)|(body->mode & ~S_IFMT); |
| if (body->valid & OBD_MD_FLTYPE) |
| inode->i_mode = (inode->i_mode & ~S_IFMT)|(body->mode & S_IFMT); |
| LASSERT(inode->i_mode != 0); |
| if (S_ISREG(inode->i_mode)) |
| inode->i_blkbits = min(PTLRPC_MAX_BRW_BITS + 1, |
| LL_MAX_BLKSIZE_BITS); |
| else |
| inode->i_blkbits = inode->i_sb->s_blocksize_bits; |
| if (body->valid & OBD_MD_FLUID) |
| inode->i_uid = make_kuid(&init_user_ns, body->uid); |
| if (body->valid & OBD_MD_FLGID) |
| inode->i_gid = make_kgid(&init_user_ns, body->gid); |
| if (body->valid & OBD_MD_FLFLAGS) |
| inode->i_flags = ll_ext_to_inode_flags(body->flags); |
| if (body->valid & OBD_MD_FLNLINK) |
| set_nlink(inode, body->nlink); |
| if (body->valid & OBD_MD_FLRDEV) |
| inode->i_rdev = old_decode_dev(body->rdev); |
| |
| if (body->valid & OBD_MD_FLID) { |
| /* FID shouldn't be changed! */ |
| if (fid_is_sane(&lli->lli_fid)) { |
| LASSERTF(lu_fid_eq(&lli->lli_fid, &body->fid1), |
| "Trying to change FID "DFID |
| " to the "DFID", inode %lu/%u(%p)\n", |
| PFID(&lli->lli_fid), PFID(&body->fid1), |
| inode->i_ino, inode->i_generation, inode); |
| } else |
| lli->lli_fid = body->fid1; |
| } |
| |
| LASSERT(fid_seq(&lli->lli_fid) != 0); |
| |
| if (body->valid & OBD_MD_FLSIZE) { |
| if (exp_connect_som(ll_i2mdexp(inode)) && |
| S_ISREG(inode->i_mode)) { |
| struct lustre_handle lockh; |
| ldlm_mode_t mode; |
| |
| /* As it is possible a blocking ast has been processed |
| * by this time, we need to check there is an UPDATE |
| * lock on the client and set LLIF_MDS_SIZE_LOCK holding |
| * it. */ |
| mode = ll_take_md_lock(inode, MDS_INODELOCK_UPDATE, |
| &lockh, LDLM_FL_CBPENDING, |
| LCK_CR | LCK_CW | |
| LCK_PR | LCK_PW); |
| if (mode) { |
| if (lli->lli_flags & (LLIF_DONE_WRITING | |
| LLIF_EPOCH_PENDING | |
| LLIF_SOM_DIRTY)) { |
| CERROR("ino %lu flags %u still has size authority! do not trust the size got from MDS\n", |
| inode->i_ino, lli->lli_flags); |
| } else { |
| /* Use old size assignment to avoid |
| * deadlock bz14138 & bz14326 */ |
| i_size_write(inode, body->size); |
| spin_lock(&lli->lli_lock); |
| lli->lli_flags |= LLIF_MDS_SIZE_LOCK; |
| spin_unlock(&lli->lli_lock); |
| } |
| ldlm_lock_decref(&lockh, mode); |
| } |
| } else { |
| /* Use old size assignment to avoid |
| * deadlock bz14138 & bz14326 */ |
| i_size_write(inode, body->size); |
| |
| CDEBUG(D_VFSTRACE, "inode=%lu, updating i_size %llu\n", |
| inode->i_ino, (unsigned long long)body->size); |
| } |
| |
| if (body->valid & OBD_MD_FLBLOCKS) |
| inode->i_blocks = body->blocks; |
| } |
| |
| if (body->valid & OBD_MD_FLMDSCAPA) { |
| LASSERT(md->mds_capa); |
| ll_add_capa(inode, md->mds_capa); |
| } |
| if (body->valid & OBD_MD_FLOSSCAPA) { |
| LASSERT(md->oss_capa); |
| ll_add_capa(inode, md->oss_capa); |
| } |
| |
| if (body->valid & OBD_MD_TSTATE) { |
| if (body->t_state & MS_RESTORE) |
| lli->lli_flags |= LLIF_FILE_RESTORING; |
| } |
| } |
| |
| void ll_read_inode2(struct inode *inode, void *opaque) |
| { |
| struct lustre_md *md = opaque; |
| struct ll_inode_info *lli = ll_i2info(inode); |
| |
| CDEBUG(D_VFSTRACE, "VFS Op:inode="DFID"(%p)\n", |
| PFID(&lli->lli_fid), inode); |
| |
| LASSERT(!lli->lli_has_smd); |
| |
| /* Core attributes from the MDS first. This is a new inode, and |
| * the VFS doesn't zero times in the core inode so we have to do |
| * it ourselves. They will be overwritten by either MDS or OST |
| * attributes - we just need to make sure they aren't newer. */ |
| LTIME_S(inode->i_mtime) = 0; |
| LTIME_S(inode->i_atime) = 0; |
| LTIME_S(inode->i_ctime) = 0; |
| inode->i_rdev = 0; |
| ll_update_inode(inode, md); |
| |
| /* OIDEBUG(inode); */ |
| |
| if (S_ISREG(inode->i_mode)) { |
| struct ll_sb_info *sbi = ll_i2sbi(inode); |
| |
| inode->i_op = &ll_file_inode_operations; |
| inode->i_fop = sbi->ll_fop; |
| inode->i_mapping->a_ops = (struct address_space_operations *)&ll_aops; |
| } else if (S_ISDIR(inode->i_mode)) { |
| inode->i_op = &ll_dir_inode_operations; |
| inode->i_fop = &ll_dir_operations; |
| } else if (S_ISLNK(inode->i_mode)) { |
| inode->i_op = &ll_fast_symlink_inode_operations; |
| } else { |
| inode->i_op = &ll_special_inode_operations; |
| |
| init_special_inode(inode, inode->i_mode, |
| inode->i_rdev); |
| } |
| } |
| |
| void ll_delete_inode(struct inode *inode) |
| { |
| struct cl_inode_info *lli = cl_i2info(inode); |
| |
| if (S_ISREG(inode->i_mode) && lli->lli_clob != NULL) |
| /* discard all dirty pages before truncating them, required by |
| * osc_extent implementation at LU-1030. */ |
| cl_sync_file_range(inode, 0, OBD_OBJECT_EOF, |
| CL_FSYNC_DISCARD, 1); |
| |
| truncate_inode_pages_final(&inode->i_data); |
| |
| /* Workaround for LU-118 */ |
| if (inode->i_data.nrpages) { |
| spin_lock_irq(&inode->i_data.tree_lock); |
| spin_unlock_irq(&inode->i_data.tree_lock); |
| LASSERTF(inode->i_data.nrpages == 0, |
| "inode=%lu/%u(%p) nrpages=%lu, see http://jira.whamcloud.com/browse/LU-118\n", |
| inode->i_ino, inode->i_generation, inode, |
| inode->i_data.nrpages); |
| } |
| /* Workaround end */ |
| |
| ll_clear_inode(inode); |
| clear_inode(inode); |
| } |
| |
| int ll_iocontrol(struct inode *inode, struct file *file, |
| unsigned int cmd, unsigned long arg) |
| { |
| struct ll_sb_info *sbi = ll_i2sbi(inode); |
| struct ptlrpc_request *req = NULL; |
| int rc, flags = 0; |
| |
| switch (cmd) { |
| case FSFILT_IOC_GETFLAGS: { |
| struct mdt_body *body; |
| struct md_op_data *op_data; |
| |
| op_data = ll_prep_md_op_data(NULL, inode, NULL, NULL, |
| 0, 0, LUSTRE_OPC_ANY, |
| NULL); |
| if (IS_ERR(op_data)) |
| return PTR_ERR(op_data); |
| |
| op_data->op_valid = OBD_MD_FLFLAGS; |
| rc = md_getattr(sbi->ll_md_exp, op_data, &req); |
| ll_finish_md_op_data(op_data); |
| if (rc) { |
| CERROR("failure %d inode %lu\n", rc, inode->i_ino); |
| return -abs(rc); |
| } |
| |
| body = req_capsule_server_get(&req->rq_pill, &RMF_MDT_BODY); |
| |
| flags = body->flags; |
| |
| ptlrpc_req_finished(req); |
| |
| return put_user(flags, (int *)arg); |
| } |
| case FSFILT_IOC_SETFLAGS: { |
| struct lov_stripe_md *lsm; |
| struct obd_info oinfo = { { { 0 } } }; |
| struct md_op_data *op_data; |
| |
| if (get_user(flags, (int *)arg)) |
| return -EFAULT; |
| |
| op_data = ll_prep_md_op_data(NULL, inode, NULL, NULL, 0, 0, |
| LUSTRE_OPC_ANY, NULL); |
| if (IS_ERR(op_data)) |
| return PTR_ERR(op_data); |
| |
| ((struct ll_iattr *)&op_data->op_attr)->ia_attr_flags = flags; |
| op_data->op_attr.ia_valid |= ATTR_ATTR_FLAG; |
| rc = md_setattr(sbi->ll_md_exp, op_data, |
| NULL, 0, NULL, 0, &req, NULL); |
| ll_finish_md_op_data(op_data); |
| ptlrpc_req_finished(req); |
| if (rc) |
| return rc; |
| |
| inode->i_flags = ll_ext_to_inode_flags(flags); |
| |
| lsm = ccc_inode_lsm_get(inode); |
| if (!lsm_has_objects(lsm)) { |
| ccc_inode_lsm_put(inode, lsm); |
| return 0; |
| } |
| |
| OBDO_ALLOC(oinfo.oi_oa); |
| if (!oinfo.oi_oa) { |
| ccc_inode_lsm_put(inode, lsm); |
| return -ENOMEM; |
| } |
| oinfo.oi_md = lsm; |
| oinfo.oi_oa->o_oi = lsm->lsm_oi; |
| oinfo.oi_oa->o_flags = flags; |
| oinfo.oi_oa->o_valid = OBD_MD_FLID | OBD_MD_FLFLAGS | |
| OBD_MD_FLGROUP; |
| oinfo.oi_capa = ll_mdscapa_get(inode); |
| obdo_set_parent_fid(oinfo.oi_oa, &ll_i2info(inode)->lli_fid); |
| rc = obd_setattr_rqset(sbi->ll_dt_exp, &oinfo, NULL); |
| capa_put(oinfo.oi_capa); |
| OBDO_FREE(oinfo.oi_oa); |
| ccc_inode_lsm_put(inode, lsm); |
| |
| if (rc && rc != -EPERM && rc != -EACCES) |
| CERROR("osc_setattr_async fails: rc = %d\n", rc); |
| |
| return rc; |
| } |
| default: |
| return -ENOSYS; |
| } |
| |
| return 0; |
| } |
| |
| int ll_flush_ctx(struct inode *inode) |
| { |
| struct ll_sb_info *sbi = ll_i2sbi(inode); |
| |
| CDEBUG(D_SEC, "flush context for user %d\n", |
| from_kuid(&init_user_ns, current_uid())); |
| |
| obd_set_info_async(NULL, sbi->ll_md_exp, |
| sizeof(KEY_FLUSH_CTX), KEY_FLUSH_CTX, |
| 0, NULL, NULL); |
| obd_set_info_async(NULL, sbi->ll_dt_exp, |
| sizeof(KEY_FLUSH_CTX), KEY_FLUSH_CTX, |
| 0, NULL, NULL); |
| return 0; |
| } |
| |
| /* umount -f client means force down, don't save state */ |
| void ll_umount_begin(struct super_block *sb) |
| { |
| struct ll_sb_info *sbi = ll_s2sbi(sb); |
| struct obd_device *obd; |
| struct obd_ioctl_data *ioc_data; |
| |
| CDEBUG(D_VFSTRACE, "VFS Op: superblock %p count %d active %d\n", sb, |
| sb->s_count, atomic_read(&sb->s_active)); |
| |
| obd = class_exp2obd(sbi->ll_md_exp); |
| if (obd == NULL) { |
| CERROR("Invalid MDC connection handle %#llx\n", |
| sbi->ll_md_exp->exp_handle.h_cookie); |
| return; |
| } |
| obd->obd_force = 1; |
| |
| obd = class_exp2obd(sbi->ll_dt_exp); |
| if (obd == NULL) { |
| CERROR("Invalid LOV connection handle %#llx\n", |
| sbi->ll_dt_exp->exp_handle.h_cookie); |
| return; |
| } |
| obd->obd_force = 1; |
| |
| ioc_data = kzalloc(sizeof(*ioc_data), GFP_NOFS); |
| if (ioc_data) { |
| obd_iocontrol(IOC_OSC_SET_ACTIVE, sbi->ll_md_exp, |
| sizeof(*ioc_data), ioc_data, NULL); |
| |
| obd_iocontrol(IOC_OSC_SET_ACTIVE, sbi->ll_dt_exp, |
| sizeof(*ioc_data), ioc_data, NULL); |
| |
| kfree(ioc_data); |
| } |
| |
| /* Really, we'd like to wait until there are no requests outstanding, |
| * and then continue. For now, we just invalidate the requests, |
| * schedule() and sleep one second if needed, and hope. |
| */ |
| schedule(); |
| } |
| |
| int ll_remount_fs(struct super_block *sb, int *flags, char *data) |
| { |
| struct ll_sb_info *sbi = ll_s2sbi(sb); |
| char *profilenm = get_profile_name(sb); |
| int err; |
| __u32 read_only; |
| |
| if ((*flags & MS_RDONLY) != (sb->s_flags & MS_RDONLY)) { |
| read_only = *flags & MS_RDONLY; |
| err = obd_set_info_async(NULL, sbi->ll_md_exp, |
| sizeof(KEY_READ_ONLY), |
| KEY_READ_ONLY, sizeof(read_only), |
| &read_only, NULL); |
| if (err) { |
| LCONSOLE_WARN("Failed to remount %s %s (%d)\n", |
| profilenm, read_only ? |
| "read-only" : "read-write", err); |
| return err; |
| } |
| |
| if (read_only) |
| sb->s_flags |= MS_RDONLY; |
| else |
| sb->s_flags &= ~MS_RDONLY; |
| |
| if (sbi->ll_flags & LL_SBI_VERBOSE) |
| LCONSOLE_WARN("Remounted %s %s\n", profilenm, |
| read_only ? "read-only" : "read-write"); |
| } |
| return 0; |
| } |
| |
| int ll_prep_inode(struct inode **inode, struct ptlrpc_request *req, |
| struct super_block *sb, struct lookup_intent *it) |
| { |
| struct ll_sb_info *sbi = NULL; |
| struct lustre_md md; |
| int rc; |
| |
| LASSERT(*inode || sb); |
| sbi = sb ? ll_s2sbi(sb) : ll_i2sbi(*inode); |
| rc = md_get_lustre_md(sbi->ll_md_exp, req, sbi->ll_dt_exp, |
| sbi->ll_md_exp, &md); |
| if (rc) |
| return rc; |
| |
| if (*inode) { |
| ll_update_inode(*inode, &md); |
| } else { |
| LASSERT(sb != NULL); |
| |
| /* |
| * At this point server returns to client's same fid as client |
| * generated for creating. So using ->fid1 is okay here. |
| */ |
| LASSERT(fid_is_sane(&md.body->fid1)); |
| |
| *inode = ll_iget(sb, cl_fid_build_ino(&md.body->fid1, |
| sbi->ll_flags & LL_SBI_32BIT_API), |
| &md); |
| if (*inode == NULL || IS_ERR(*inode)) { |
| #ifdef CONFIG_FS_POSIX_ACL |
| if (md.posix_acl) { |
| posix_acl_release(md.posix_acl); |
| md.posix_acl = NULL; |
| } |
| #endif |
| rc = IS_ERR(*inode) ? PTR_ERR(*inode) : -ENOMEM; |
| *inode = NULL; |
| CERROR("new_inode -fatal: rc %d\n", rc); |
| goto out; |
| } |
| } |
| |
| /* Handling piggyback layout lock. |
| * Layout lock can be piggybacked by getattr and open request. |
| * The lsm can be applied to inode only if it comes with a layout lock |
| * otherwise correct layout may be overwritten, for example: |
| * 1. proc1: mdt returns a lsm but not granting layout |
| * 2. layout was changed by another client |
| * 3. proc2: refresh layout and layout lock granted |
| * 4. proc1: to apply a stale layout */ |
| if (it != NULL && it->d.lustre.it_lock_mode != 0) { |
| struct lustre_handle lockh; |
| struct ldlm_lock *lock; |
| |
| lockh.cookie = it->d.lustre.it_lock_handle; |
| lock = ldlm_handle2lock(&lockh); |
| LASSERT(lock != NULL); |
| if (ldlm_has_layout(lock)) { |
| struct cl_object_conf conf; |
| |
| memset(&conf, 0, sizeof(conf)); |
| conf.coc_opc = OBJECT_CONF_SET; |
| conf.coc_inode = *inode; |
| conf.coc_lock = lock; |
| conf.u.coc_md = &md; |
| (void)ll_layout_conf(*inode, &conf); |
| } |
| LDLM_LOCK_PUT(lock); |
| } |
| |
| out: |
| if (md.lsm != NULL) |
| obd_free_memmd(sbi->ll_dt_exp, &md.lsm); |
| md_free_lustre_md(sbi->ll_md_exp, &md); |
| return rc; |
| } |
| |
| int ll_obd_statfs(struct inode *inode, void *arg) |
| { |
| struct ll_sb_info *sbi = NULL; |
| struct obd_export *exp; |
| char *buf = NULL; |
| struct obd_ioctl_data *data = NULL; |
| __u32 type; |
| __u32 flags; |
| int len = 0, rc; |
| |
| if (!inode) { |
| rc = -EINVAL; |
| goto out_statfs; |
| } |
| |
| sbi = ll_i2sbi(inode); |
| if (!sbi) { |
| rc = -EINVAL; |
| goto out_statfs; |
| } |
| |
| rc = obd_ioctl_getdata(&buf, &len, arg); |
| if (rc) |
| goto out_statfs; |
| |
| data = (void *)buf; |
| if (!data->ioc_inlbuf1 || !data->ioc_inlbuf2 || |
| !data->ioc_pbuf1 || !data->ioc_pbuf2) { |
| rc = -EINVAL; |
| goto out_statfs; |
| } |
| |
| if (data->ioc_inllen1 != sizeof(__u32) || |
| data->ioc_inllen2 != sizeof(__u32) || |
| data->ioc_plen1 != sizeof(struct obd_statfs) || |
| data->ioc_plen2 != sizeof(struct obd_uuid)) { |
| rc = -EINVAL; |
| goto out_statfs; |
| } |
| |
| memcpy(&type, data->ioc_inlbuf1, sizeof(__u32)); |
| if (type & LL_STATFS_LMV) |
| exp = sbi->ll_md_exp; |
| else if (type & LL_STATFS_LOV) |
| exp = sbi->ll_dt_exp; |
| else { |
| rc = -ENODEV; |
| goto out_statfs; |
| } |
| |
| flags = (type & LL_STATFS_NODELAY) ? OBD_STATFS_NODELAY : 0; |
| rc = obd_iocontrol(IOC_OBD_STATFS, exp, len, buf, &flags); |
| if (rc) |
| goto out_statfs; |
| out_statfs: |
| if (buf) |
| obd_ioctl_freedata(buf, len); |
| return rc; |
| } |
| |
| int ll_process_config(struct lustre_cfg *lcfg) |
| { |
| char *ptr; |
| void *sb; |
| struct lprocfs_static_vars lvars; |
| unsigned long x; |
| int rc = 0; |
| |
| lprocfs_llite_init_vars(&lvars); |
| |
| /* The instance name contains the sb: lustre-client-aacfe000 */ |
| ptr = strrchr(lustre_cfg_string(lcfg, 0), '-'); |
| if (!ptr || !*(++ptr)) |
| return -EINVAL; |
| rc = kstrtoul(ptr, 16, &x); |
| if (rc != 0) |
| return -EINVAL; |
| sb = (void *)x; |
| /* This better be a real Lustre superblock! */ |
| LASSERT(s2lsi((struct super_block *)sb)->lsi_lmd->lmd_magic == LMD_MAGIC); |
| |
| /* Note we have not called client_common_fill_super yet, so |
| proc fns must be able to handle that! */ |
| rc = class_process_proc_param(PARAM_LLITE, lvars.obd_vars, |
| lcfg, sb); |
| if (rc > 0) |
| rc = 0; |
| return rc; |
| } |
| |
| /* this function prepares md_op_data hint for passing ot down to MD stack. */ |
| struct md_op_data *ll_prep_md_op_data(struct md_op_data *op_data, |
| struct inode *i1, struct inode *i2, |
| const char *name, int namelen, |
| int mode, __u32 opc, void *data) |
| { |
| LASSERT(i1 != NULL); |
| |
| if (namelen > ll_i2sbi(i1)->ll_namelen) |
| return ERR_PTR(-ENAMETOOLONG); |
| |
| if (op_data == NULL) |
| op_data = kzalloc(sizeof(*op_data), GFP_NOFS); |
| |
| if (op_data == NULL) |
| return ERR_PTR(-ENOMEM); |
| |
| ll_i2gids(op_data->op_suppgids, i1, i2); |
| op_data->op_fid1 = *ll_inode2fid(i1); |
| op_data->op_capa1 = ll_mdscapa_get(i1); |
| |
| if (i2) { |
| op_data->op_fid2 = *ll_inode2fid(i2); |
| op_data->op_capa2 = ll_mdscapa_get(i2); |
| } else { |
| fid_zero(&op_data->op_fid2); |
| op_data->op_capa2 = NULL; |
| } |
| |
| op_data->op_name = name; |
| op_data->op_namelen = namelen; |
| op_data->op_mode = mode; |
| op_data->op_mod_time = get_seconds(); |
| op_data->op_fsuid = from_kuid(&init_user_ns, current_fsuid()); |
| op_data->op_fsgid = from_kgid(&init_user_ns, current_fsgid()); |
| op_data->op_cap = cfs_curproc_cap_pack(); |
| op_data->op_bias = 0; |
| op_data->op_cli_flags = 0; |
| if ((opc == LUSTRE_OPC_CREATE) && (name != NULL) && |
| filename_is_volatile(name, namelen, NULL)) |
| op_data->op_bias |= MDS_CREATE_VOLATILE; |
| op_data->op_opc = opc; |
| op_data->op_mds = 0; |
| op_data->op_data = data; |
| |
| /* If the file is being opened after mknod() (normally due to NFS) |
| * try to use the default stripe data from parent directory for |
| * allocating OST objects. Try to pass the parent FID to MDS. */ |
| if (opc == LUSTRE_OPC_CREATE && i1 == i2 && S_ISREG(i2->i_mode) && |
| !ll_i2info(i2)->lli_has_smd) { |
| struct ll_inode_info *lli = ll_i2info(i2); |
| |
| spin_lock(&lli->lli_lock); |
| if (likely(!lli->lli_has_smd && !fid_is_zero(&lli->lli_pfid))) |
| op_data->op_fid1 = lli->lli_pfid; |
| spin_unlock(&lli->lli_lock); |
| /** We ignore parent's capability temporary. */ |
| } |
| |
| /* When called by ll_setattr_raw, file is i1. */ |
| if (LLIF_DATA_MODIFIED & ll_i2info(i1)->lli_flags) |
| op_data->op_bias |= MDS_DATA_MODIFIED; |
| |
| return op_data; |
| } |
| |
| void ll_finish_md_op_data(struct md_op_data *op_data) |
| { |
| capa_put(op_data->op_capa1); |
| capa_put(op_data->op_capa2); |
| kfree(op_data); |
| } |
| |
| int ll_show_options(struct seq_file *seq, struct dentry *dentry) |
| { |
| struct ll_sb_info *sbi; |
| |
| LASSERT((seq != NULL) && (dentry != NULL)); |
| sbi = ll_s2sbi(dentry->d_sb); |
| |
| if (sbi->ll_flags & LL_SBI_NOLCK) |
| seq_puts(seq, ",nolock"); |
| |
| if (sbi->ll_flags & LL_SBI_FLOCK) |
| seq_puts(seq, ",flock"); |
| |
| if (sbi->ll_flags & LL_SBI_LOCALFLOCK) |
| seq_puts(seq, ",localflock"); |
| |
| if (sbi->ll_flags & LL_SBI_USER_XATTR) |
| seq_puts(seq, ",user_xattr"); |
| |
| if (sbi->ll_flags & LL_SBI_LAZYSTATFS) |
| seq_puts(seq, ",lazystatfs"); |
| |
| if (sbi->ll_flags & LL_SBI_USER_FID2PATH) |
| seq_puts(seq, ",user_fid2path"); |
| |
| return 0; |
| } |
| |
| /** |
| * Get obd name by cmd, and copy out to user space |
| */ |
| int ll_get_obd_name(struct inode *inode, unsigned int cmd, unsigned long arg) |
| { |
| struct ll_sb_info *sbi = ll_i2sbi(inode); |
| struct obd_device *obd; |
| |
| if (cmd == OBD_IOC_GETDTNAME) |
| obd = class_exp2obd(sbi->ll_dt_exp); |
| else if (cmd == OBD_IOC_GETMDNAME) |
| obd = class_exp2obd(sbi->ll_md_exp); |
| else |
| return -EINVAL; |
| |
| if (!obd) |
| return -ENOENT; |
| |
| if (copy_to_user((void *)arg, obd->obd_name, |
| strlen(obd->obd_name) + 1)) |
| return -EFAULT; |
| |
| return 0; |
| } |
| |
| /** |
| * Get lustre file system name by \a sbi. If \a buf is provided(non-NULL), the |
| * fsname will be returned in this buffer; otherwise, a static buffer will be |
| * used to store the fsname and returned to caller. |
| */ |
| char *ll_get_fsname(struct super_block *sb, char *buf, int buflen) |
| { |
| static char fsname_static[MTI_NAME_MAXLEN]; |
| struct lustre_sb_info *lsi = s2lsi(sb); |
| char *ptr; |
| int len; |
| |
| if (buf == NULL) { |
| /* this means the caller wants to use static buffer |
| * and it doesn't care about race. Usually this is |
| * in error reporting path */ |
| buf = fsname_static; |
| buflen = sizeof(fsname_static); |
| } |
| |
| len = strlen(lsi->lsi_lmd->lmd_profile); |
| ptr = strrchr(lsi->lsi_lmd->lmd_profile, '-'); |
| if (ptr && (strcmp(ptr, "-client") == 0)) |
| len -= 7; |
| |
| if (unlikely(len >= buflen)) |
| len = buflen - 1; |
| strncpy(buf, lsi->lsi_lmd->lmd_profile, len); |
| buf[len] = '\0'; |
| |
| return buf; |
| } |
| |
| void ll_dirty_page_discard_warn(struct page *page, int ioret) |
| { |
| char *buf, *path = NULL; |
| struct dentry *dentry = NULL; |
| struct ccc_object *obj = cl_inode2ccc(page->mapping->host); |
| |
| /* this can be called inside spin lock so use GFP_ATOMIC. */ |
| buf = (char *)__get_free_page(GFP_ATOMIC); |
| if (buf != NULL) { |
| dentry = d_find_alias(page->mapping->host); |
| if (dentry != NULL) |
| path = dentry_path_raw(dentry, buf, PAGE_SIZE); |
| } |
| |
| CDEBUG(D_WARNING, |
| "%s: dirty page discard: %s/fid: " DFID "/%s may get corrupted (rc %d)\n", |
| ll_get_fsname(page->mapping->host->i_sb, NULL, 0), |
| s2lsi(page->mapping->host->i_sb)->lsi_lmd->lmd_dev, |
| PFID(&obj->cob_header.coh_lu.loh_fid), |
| (path && !IS_ERR(path)) ? path : "", ioret); |
| |
| if (dentry != NULL) |
| dput(dentry); |
| |
| if (buf != NULL) |
| free_page((unsigned long)buf); |
| } |