projects / linux-2.6-block.git / blame
| Commit | Line | Data |
|---|---|---|
| b3b94faa | 1 | config GFS2_FS |
| b5ea3e1e | 2 | tristate "GFS2 file system support" |
| b5ea3e1e | 3 | select FS_POSIX_ACL |
| fa2ecfc5 | 4 | select CRC32 |
| dcb2cd55 | 5 | select LIBCRC32C |
| cc632e7f | 6 | select QUOTACTL |
| aac1a55b | 7 | select FS_IOMAP |
| b5ea3e1e | 8 | help |
| 9beeb9f3 | 9 | A cluster filesystem. |
| b5ea3e1e | 10 | |
| 9beeb9f3 RD |
11 | Allows a cluster of computers to simultaneously use a block device |
| 12 | that is shared between them (with FC, iSCSI, NBD, etc...). GFS reads | |
| 13 | and writes to the block device like a local filesystem, but also uses | |
| 14 | a lock module to allow the computers coordinate their I/O so | |
| 15 | filesystem consistency is maintained. One of the nifty features of | |
| 16 | GFS is perfect consistency -- changes made to the filesystem on one | |
| 17 | machine show up immediately on all other machines in the cluster. | |
| b3b94faa | 18 | |
| 048bca22 SW |
19 | To use the GFS2 filesystem in a cluster, you will need to enable |
| 20 | the locking module below. Documentation and utilities for GFS2 can | |
| 9beeb9f3 | 21 | be found here: http://sources.redhat.com/cluster |
| b3b94faa | 22 | |
| f057f6cd | 23 | The "nolock" lock module is now built in to GFS2 by default. If |
| 40b31360 | 24 | you want to use the DLM, be sure to enable IPv4/6 networking. |
| b3b94faa DT |
25 | |
| 26 | config GFS2_FS_LOCKING_DLM | |
| f057f6cd | 27 | bool "GFS2 DLM locking" |
| 97cc008a | 28 | depends on (GFS2_FS!=n) && NET && INET && (IPV6 || IPV6=n) && \ |
| 40b31360 | 29 | CONFIGFS_FS && SYSFS && (DLM=y || DLM=GFS2_FS) |
| b3b94faa | 30 | help |
| 9beeb9f3 | 31 | Multiple node locking module for GFS2 |
| b3b94faa | 32 | |
| f057f6cd | 33 | Most users of GFS2 will require this. It provides the locking |
| 9beeb9f3 RD |
34 | interface between GFS2 and the DLM, which is required to use GFS2 |
| 35 | in a cluster environment. |