| David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame^] | 1 | config GFS2_FS |
| 2 | tristate "GFS2 file system support" |
| 3 | default m |
| 4 | depends on EXPERIMENTAL |
| 5 | select FS_POSIX_ACL |
| 6 | select SYSFS |
| 7 | help |
| 8 | A cluster filesystem. |
| 9 | |
| 10 | Allows a cluster of computers to simultaneously use a block device |
| 11 | that is shared between them (with FC, iSCSI, NBD, etc...). GFS reads |
| 12 | and writes to the block device like a local filesystem, but also uses |
| 13 | a lock module to allow the computers coordinate their I/O so |
| 14 | filesystem consistency is maintained. One of the nifty features of |
| 15 | GFS is perfect consistency -- changes made to the filesystem on one |
| 16 | machine show up immediately on all other machines in the cluster. |
| 17 | |
| 18 | To use the GFS2 filesystem, you will need to enable one or more of |
| 19 | the below locking modules. Documentation and utilities for GFS2 can |
| 20 | be found here: http://sources.redhat.com/cluster/gfs/ |
| 21 | |
| 22 | config GFS2_FS_LOCKING_NOLOCK |
| 23 | tristate "GFS2 \"nolock\" locking module" |
| 24 | depends on GFS2_FS |
| 25 | help |
| 26 | Single node locking module for GFS2. |
| 27 | |
| 28 | Use this module if you want to use GFS2 on a single node without |
| 29 | its clustering features. You can still take advantage of the |
| 30 | large file support, and upgrade to running a full cluster later on |
| 31 | if required. |
| 32 | |
| 33 | If you will only be using GFS2 in cluster mode, you do not need this |
| 34 | module. |
| 35 | |
| 36 | config GFS2_FS_LOCKING_DLM |
| 37 | tristate "GFS2 DLM locking module" |
| 38 | depends on GFS2_FS |
| 39 | select DLM |
| 40 | help |
| 41 | Multiple node locking module for GFS2 |
| 42 | |
| 43 | Most users of GFS2 will require this module. It provides the locking |
| 44 | interface between GFS2 and the DLM, which is required to use GFS2 |
| 45 | in a cluster environment. |
| 46 | |