| config GFS2_FS |
| tristate "GFS2 file system support" |
| select FS_POSIX_ACL |
| select CRC32 |
| select LIBCRC32C |
| select QUOTACTL |
| select FS_IOMAP |
| 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 in a cluster, you will need to enable |
| the locking module below. Documentation and utilities for GFS2 can |
| be found here: http://sources.redhat.com/cluster |
| |
| The "nolock" lock module is now built in to GFS2 by default. If |
| you want to use the DLM, be sure to enable IPv4/6 networking. |
| |
| config GFS2_FS_LOCKING_DLM |
| bool "GFS2 DLM locking" |
| depends on (GFS2_FS!=n) && NET && INET && (IPV6 || IPV6=n) && \ |
| CONFIGFS_FS && SYSFS && (DLM=y || DLM=GFS2_FS) |
| help |
| Multiple node locking module for GFS2 |
| |
| Most users of GFS2 will require this. It provides the locking |
| interface between GFS2 and the DLM, which is required to use GFS2 |
| in a cluster environment. |
