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config GFS2_FS

        tristate "GFS2 file system support"

        depends on EXPERIMENTAL

        select FS_POSIX_ACL

        select CRC32

        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

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 && SYSFS && NET && INET && (IPV6 || IPV6=n)

        select IP_SCTP if DLM_SCTP

        select CONFIGFS_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.