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Linux/fs/gfs2/Kconfig

  1 config GFS2_FS
  2         tristate "GFS2 file system support"
  3         depends on (64BIT || LBDAF)
  4         select FS_POSIX_ACL
  5         select CRC32
  6         select QUOTACTL
  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 in a cluster, you will need to enable
 19           the locking module below. Documentation and utilities for GFS2 can
 20           be found here: http://sources.redhat.com/cluster
 21 
 22           The "nolock" lock module is now built in to GFS2 by default. If
 23           you want to use the DLM, be sure to enable IPv4/6 networking.
 24 
 25 config GFS2_FS_LOCKING_DLM
 26         bool "GFS2 DLM locking"
 27         depends on (GFS2_FS!=n) && NET && INET && (IPV6 || IPV6=n) && \
 28                 CONFIGFS_FS && SYSFS && (DLM=y || DLM=GFS2_FS)
 29         help
 30           Multiple node locking module for GFS2
 31 
 32           Most users of GFS2 will require this. It provides the locking
 33           interface between GFS2 and the DLM, which is required to use GFS2
 34           in a cluster environment.

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