| David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 1 | config GFS2_FS |
| Steven Whitehouse | b5ea3e1 | 2006-04-24 14:14:42 -0400 | [diff] [blame] | 2 | tristate "GFS2 file system support" |
| Bartlomiej Zolnierkiewicz | 90c699a | 2009-06-19 08:08:50 +0200 | [diff] [blame^] | 3 | depends on EXPERIMENTAL && (64BIT || LBDAF) |
| Steven Whitehouse | f057f6c | 2009-01-12 10:43:39 +0000 | [diff] [blame] | 4 | select DLM if GFS2_FS_LOCKING_DLM |
| 5 | select CONFIGFS_FS if GFS2_FS_LOCKING_DLM |
| 6 | select SYSFS if GFS2_FS_LOCKING_DLM |
| 7 | select IP_SCTP if DLM_SCTP |
| Steven Whitehouse | b5ea3e1 | 2006-04-24 14:14:42 -0400 | [diff] [blame] | 8 | select FS_POSIX_ACL |
| Steven Whitehouse | fa2ecfc5 | 2006-11-20 10:04:49 -0500 | [diff] [blame] | 9 | select CRC32 |
| Steven Whitehouse | fe64d51 | 2009-05-19 10:01:18 +0100 | [diff] [blame] | 10 | select SLOW_WORK |
| Steven Whitehouse | b5ea3e1 | 2006-04-24 14:14:42 -0400 | [diff] [blame] | 11 | help |
| Randy Dunlap | 9beeb9f | 2007-01-30 14:30:08 -0800 | [diff] [blame] | 12 | A cluster filesystem. |
| David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 13 | |
| Randy Dunlap | 9beeb9f | 2007-01-30 14:30:08 -0800 | [diff] [blame] | 14 | Allows a cluster of computers to simultaneously use a block device |
| 15 | that is shared between them (with FC, iSCSI, NBD, etc...). GFS reads |
| 16 | and writes to the block device like a local filesystem, but also uses |
| 17 | a lock module to allow the computers coordinate their I/O so |
| 18 | filesystem consistency is maintained. One of the nifty features of |
| 19 | GFS is perfect consistency -- changes made to the filesystem on one |
| 20 | machine show up immediately on all other machines in the cluster. |
| David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 21 | |
| Steven Whitehouse | 048bca2 | 2008-05-23 14:46:04 +0100 | [diff] [blame] | 22 | To use the GFS2 filesystem in a cluster, you will need to enable |
| 23 | the locking module below. Documentation and utilities for GFS2 can |
| Randy Dunlap | 9beeb9f | 2007-01-30 14:30:08 -0800 | [diff] [blame] | 24 | be found here: http://sources.redhat.com/cluster |
| David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 25 | |
| Steven Whitehouse | f057f6c | 2009-01-12 10:43:39 +0000 | [diff] [blame] | 26 | The "nolock" lock module is now built in to GFS2 by default. If |
| 27 | you want to use the DLM, be sure to enable HOTPLUG and IPv4/6 |
| 28 | networking. |
| David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 29 | |
| 30 | config GFS2_FS_LOCKING_DLM |
| Steven Whitehouse | f057f6c | 2009-01-12 10:43:39 +0000 | [diff] [blame] | 31 | bool "GFS2 DLM locking" |
| 32 | depends on (GFS2_FS!=n) && NET && INET && (IPV6 || IPV6=n) && HOTPLUG |
| David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 33 | help |
| Randy Dunlap | 9beeb9f | 2007-01-30 14:30:08 -0800 | [diff] [blame] | 34 | Multiple node locking module for GFS2 |
| David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 35 | |
| Steven Whitehouse | f057f6c | 2009-01-12 10:43:39 +0000 | [diff] [blame] | 36 | Most users of GFS2 will require this. It provides the locking |
| Randy Dunlap | 9beeb9f | 2007-01-30 14:30:08 -0800 | [diff] [blame] | 37 | interface between GFS2 and the DLM, which is required to use GFS2 |
| 38 | in a cluster environment. |