| config GFS2_FS |
| tristate "GFS2 file system support" |
| depends on EXPERIMENTAL |
| select FS_POSIX_ACL |
| help |
| A cluster filesystem. |
| |
| Allows a cluster of computers to simultaneously use a block device |
| that is shared between them (with FC, iSCSI, NBD, etc...). GFS reads |
| and writes to the block device like a local filesystem, but also uses |
| a lock module to allow the computers coordinate their I/O so |
| filesystem consistency is maintained. One of the nifty features of |
| GFS is perfect consistency -- changes made to the filesystem on one |
| machine show up immediately on all other machines in the cluster. |
| |
| To use the GFS2 filesystem, you will need to enable one or more of |
| the below locking modules. Documentation and utilities for GFS2 can |
| be found here: http://sources.redhat.com/cluster/gfs/ |
| |
| config GFS2_FS_LOCKING_NOLOCK |
| tristate "GFS2 \"nolock\" locking module" |
| depends on GFS2_FS |
| help |
| Single node locking module for GFS2. |
| |
| Use this module if you want to use GFS2 on a single node without |
| its clustering features. You can still take advantage of the |
| large file support, and upgrade to running a full cluster later on |
| if required. |
| |
| If you will only be using GFS2 in cluster mode, you do not need this |
| module. |
| |
| config GFS2_FS_LOCKING_DLM |
| tristate "GFS2 DLM locking module" |
| depends on GFS2_FS |
| select DLM |
| help |
| Multiple node locking module for GFS2 |
| |
| Most users of GFS2 will require this module. It provides the locking |
| interface between GFS2 and the DLM, which is required to use GFS2 |
| in a cluster environment. |
| |