fs/gfs2/Kconfig

   1 config GFS2_FS
   2         tristate "GFS2 file system support"
   3         depends on EXPERIMENTAL && (64BIT || LBDAF)
   4         select DLM if GFS2_FS_LOCKING_DLM
   5         select CONFIGFS_FS if GFS2_FS_LOCKING_DLM
   6         select SYSFS if GFS2_FS_LOCKING_DLM
   7         select IP_SCTP if DLM_SCTP
   8         select FS_POSIX_ACL
   9         select CRC32
  10         select SLOW_WORK
  11         help
  12           A cluster filesystem.
  13
  14           Allows a cluster of computers to simultaneously use a block device
  15           that is shared between them (with FC, iSCSI, NBD, etc...).  GFS reads
  16           and writes to the block device like a local filesystem, but also uses
  17           a lock module to allow the computers coordinate their I/O so
  18           filesystem consistency is maintained.  One of the nifty features of
  19           GFS is perfect consistency -- changes made to the filesystem on one
  20           machine show up immediately on all other machines in the cluster.
  21
  22           To use the GFS2 filesystem in a cluster, you will need to enable
  23           the locking module below. Documentation and utilities for GFS2 can
  24           be found here: http://sources.redhat.com/cluster
  25
  26           The "nolock" lock module is now built in to GFS2 by default. If
  27           you want to use the DLM, be sure to enable HOTPLUG and IPv4/6
  28           networking.
  29
  30 config GFS2_FS_LOCKING_DLM
  31         bool "GFS2 DLM locking"
  32         depends on (GFS2_FS!=n) && NET && INET && (IPV6 || IPV6=n) && HOTPLUG
  33         help
  34           Multiple node locking module for GFS2
  35
  36           Most users of GFS2 will require this. It provides the locking
  37           interface between GFS2 and the DLM, which is required to use GFS2
  38           in a cluster environment.