| /* |
| drbd_proc.c |
| |
| This file is part of DRBD by Philipp Reisner and Lars Ellenberg. |
| |
| Copyright (C) 2001-2008, LINBIT Information Technologies GmbH. |
| Copyright (C) 1999-2008, Philipp Reisner <philipp.reisner@linbit.com>. |
| Copyright (C) 2002-2008, Lars Ellenberg <lars.ellenberg@linbit.com>. |
| |
| drbd is free software; you can redistribute it and/or modify |
| it under the terms of the GNU General Public License as published by |
| the Free Software Foundation; either version 2, or (at your option) |
| any later version. |
| |
| drbd 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 for more details. |
| |
| You should have received a copy of the GNU General Public License |
| along with drbd; see the file COPYING. If not, write to |
| the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. |
| |
| */ |
| |
| #include <linux/module.h> |
| |
| #include <asm/uaccess.h> |
| #include <linux/fs.h> |
| #include <linux/file.h> |
| #include <linux/slab.h> |
| #include <linux/proc_fs.h> |
| #include <linux/seq_file.h> |
| #include <linux/drbd.h> |
| #include "drbd_int.h" |
| |
| static int drbd_proc_open(struct inode *inode, struct file *file); |
| |
| |
| struct proc_dir_entry *drbd_proc; |
| const struct file_operations drbd_proc_fops = { |
| .owner = THIS_MODULE, |
| .open = drbd_proc_open, |
| .read = seq_read, |
| .llseek = seq_lseek, |
| .release = single_release, |
| }; |
| |
| |
| /*lge |
| * progress bars shamelessly adapted from driver/md/md.c |
| * output looks like |
| * [=====>..............] 33.5% (23456/123456) |
| * finish: 2:20:20 speed: 6,345 (6,456) K/sec |
| */ |
| static void drbd_syncer_progress(struct drbd_conf *mdev, struct seq_file *seq) |
| { |
| unsigned long db, dt, dbdt, rt, rs_left; |
| unsigned int res; |
| int i, x, y; |
| |
| drbd_get_syncer_progress(mdev, &rs_left, &res); |
| |
| x = res/50; |
| y = 20-x; |
| seq_printf(seq, "\t["); |
| for (i = 1; i < x; i++) |
| seq_printf(seq, "="); |
| seq_printf(seq, ">"); |
| for (i = 0; i < y; i++) |
| seq_printf(seq, "."); |
| seq_printf(seq, "] "); |
| |
| seq_printf(seq, "sync'ed:%3u.%u%% ", res / 10, res % 10); |
| /* if more than 1 GB display in MB */ |
| if (mdev->rs_total > 0x100000L) |
| seq_printf(seq, "(%lu/%lu)M\n\t", |
| (unsigned long) Bit2KB(rs_left >> 10), |
| (unsigned long) Bit2KB(mdev->rs_total >> 10)); |
| else |
| seq_printf(seq, "(%lu/%lu)K\n\t", |
| (unsigned long) Bit2KB(rs_left), |
| (unsigned long) Bit2KB(mdev->rs_total)); |
| |
| /* see drivers/md/md.c |
| * We do not want to overflow, so the order of operands and |
| * the * 100 / 100 trick are important. We do a +1 to be |
| * safe against division by zero. We only estimate anyway. |
| * |
| * dt: time from mark until now |
| * db: blocks written from mark until now |
| * rt: remaining time |
| */ |
| dt = (jiffies - mdev->rs_mark_time) / HZ; |
| |
| if (dt > 20) { |
| /* if we made no update to rs_mark_time for too long, |
| * we are stalled. show that. */ |
| seq_printf(seq, "stalled\n"); |
| return; |
| } |
| |
| if (!dt) |
| dt++; |
| db = mdev->rs_mark_left - rs_left; |
| rt = (dt * (rs_left / (db/100+1)))/100; /* seconds */ |
| |
| seq_printf(seq, "finish: %lu:%02lu:%02lu", |
| rt / 3600, (rt % 3600) / 60, rt % 60); |
| |
| /* current speed average over (SYNC_MARKS * SYNC_MARK_STEP) jiffies */ |
| dbdt = Bit2KB(db/dt); |
| if (dbdt > 1000) |
| seq_printf(seq, " speed: %ld,%03ld", |
| dbdt/1000, dbdt % 1000); |
| else |
| seq_printf(seq, " speed: %ld", dbdt); |
| |
| /* mean speed since syncer started |
| * we do account for PausedSync periods */ |
| dt = (jiffies - mdev->rs_start - mdev->rs_paused) / HZ; |
| if (dt <= 0) |
| dt = 1; |
| db = mdev->rs_total - rs_left; |
| dbdt = Bit2KB(db/dt); |
| if (dbdt > 1000) |
| seq_printf(seq, " (%ld,%03ld)", |
| dbdt/1000, dbdt % 1000); |
| else |
| seq_printf(seq, " (%ld)", dbdt); |
| |
| seq_printf(seq, " K/sec\n"); |
| } |
| |
| static void resync_dump_detail(struct seq_file *seq, struct lc_element *e) |
| { |
| struct bm_extent *bme = lc_entry(e, struct bm_extent, lce); |
| |
| seq_printf(seq, "%5d %s %s\n", bme->rs_left, |
| bme->flags & BME_NO_WRITES ? "NO_WRITES" : "---------", |
| bme->flags & BME_LOCKED ? "LOCKED" : "------" |
| ); |
| } |
| |
| static int drbd_seq_show(struct seq_file *seq, void *v) |
| { |
| int i, hole = 0; |
| const char *sn; |
| struct drbd_conf *mdev; |
| |
| static char write_ordering_chars[] = { |
| [WO_none] = 'n', |
| [WO_drain_io] = 'd', |
| [WO_bdev_flush] = 'f', |
| [WO_bio_barrier] = 'b', |
| }; |
| |
| seq_printf(seq, "version: " REL_VERSION " (api:%d/proto:%d-%d)\n%s\n", |
| API_VERSION, PRO_VERSION_MIN, PRO_VERSION_MAX, drbd_buildtag()); |
| |
| /* |
| cs .. connection state |
| ro .. node role (local/remote) |
| ds .. disk state (local/remote) |
| protocol |
| various flags |
| ns .. network send |
| nr .. network receive |
| dw .. disk write |
| dr .. disk read |
| al .. activity log write count |
| bm .. bitmap update write count |
| pe .. pending (waiting for ack or data reply) |
| ua .. unack'd (still need to send ack or data reply) |
| ap .. application requests accepted, but not yet completed |
| ep .. number of epochs currently "on the fly", P_BARRIER_ACK pending |
| wo .. write ordering mode currently in use |
| oos .. known out-of-sync kB |
| */ |
| |
| for (i = 0; i < minor_count; i++) { |
| mdev = minor_to_mdev(i); |
| if (!mdev) { |
| hole = 1; |
| continue; |
| } |
| if (hole) { |
| hole = 0; |
| seq_printf(seq, "\n"); |
| } |
| |
| sn = drbd_conn_str(mdev->state.conn); |
| |
| if (mdev->state.conn == C_STANDALONE && |
| mdev->state.disk == D_DISKLESS && |
| mdev->state.role == R_SECONDARY) { |
| seq_printf(seq, "%2d: cs:Unconfigured\n", i); |
| } else { |
| seq_printf(seq, |
| "%2d: cs:%s ro:%s/%s ds:%s/%s %c %c%c%c%c%c\n" |
| " ns:%u nr:%u dw:%u dr:%u al:%u bm:%u " |
| "lo:%d pe:%d ua:%d ap:%d ep:%d wo:%c", |
| i, sn, |
| drbd_role_str(mdev->state.role), |
| drbd_role_str(mdev->state.peer), |
| drbd_disk_str(mdev->state.disk), |
| drbd_disk_str(mdev->state.pdsk), |
| (mdev->net_conf == NULL ? ' ' : |
| (mdev->net_conf->wire_protocol - DRBD_PROT_A+'A')), |
| mdev->state.susp ? 's' : 'r', |
| mdev->state.aftr_isp ? 'a' : '-', |
| mdev->state.peer_isp ? 'p' : '-', |
| mdev->state.user_isp ? 'u' : '-', |
| mdev->congestion_reason ?: '-', |
| mdev->send_cnt/2, |
| mdev->recv_cnt/2, |
| mdev->writ_cnt/2, |
| mdev->read_cnt/2, |
| mdev->al_writ_cnt, |
| mdev->bm_writ_cnt, |
| atomic_read(&mdev->local_cnt), |
| atomic_read(&mdev->ap_pending_cnt) + |
| atomic_read(&mdev->rs_pending_cnt), |
| atomic_read(&mdev->unacked_cnt), |
| atomic_read(&mdev->ap_bio_cnt), |
| mdev->epochs, |
| write_ordering_chars[mdev->write_ordering] |
| ); |
| seq_printf(seq, " oos:%lu\n", |
| Bit2KB(drbd_bm_total_weight(mdev))); |
| } |
| if (mdev->state.conn == C_SYNC_SOURCE || |
| mdev->state.conn == C_SYNC_TARGET) |
| drbd_syncer_progress(mdev, seq); |
| |
| if (mdev->state.conn == C_VERIFY_S || mdev->state.conn == C_VERIFY_T) |
| seq_printf(seq, "\t%3d%% %lu/%lu\n", |
| (int)((mdev->rs_total-mdev->ov_left) / |
| (mdev->rs_total/100+1)), |
| mdev->rs_total - mdev->ov_left, |
| mdev->rs_total); |
| |
| if (proc_details >= 1 && get_ldev_if_state(mdev, D_FAILED)) { |
| lc_seq_printf_stats(seq, mdev->resync); |
| lc_seq_printf_stats(seq, mdev->act_log); |
| put_ldev(mdev); |
| } |
| |
| if (proc_details >= 2) { |
| if (mdev->resync) { |
| lc_seq_dump_details(seq, mdev->resync, "rs_left", |
| resync_dump_detail); |
| } |
| } |
| } |
| |
| return 0; |
| } |
| |
| static int drbd_proc_open(struct inode *inode, struct file *file) |
| { |
| return single_open(file, drbd_seq_show, PDE(inode)->data); |
| } |
| |
| /* PROC FS stuff end */ |