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
16 Allows a cluster of computers to simultaneously use a block device
17 that is shared between them (with FC, iSCSI, NBD, etc...). GFS reads
18 and writes to the block device like a local filesystem, but also uses
19 a lock module to allow the computers coordinate their I/O so
20 filesystem consistency is maintained. One of the nifty features of
21 GFS is perfect consistency -- changes made to the filesystem on one
22 machine show up immediately on all other machines in the cluster.
24 To use the GFS2 filesystem in a cluster, you will need to enable
25 the locking module below. Documentation and utilities for GFS2 can
26 be found here: http://sources.redhat.com/cluster
28 The "nolock" lock module is now built in to GFS2 by default. If
29 you want to use the DLM, be sure to enable HOTPLUG and IPv4/6
32 config GFS2_FS_LOCKING_DLM
33 bool "GFS2 DLM locking"
34 depends on (GFS2_FS!=n) && NET && INET && (IPV6 || IPV6=n) && HOTPLUG
36 Multiple node locking module for GFS2
38 Most users of GFS2 will require this. It provides the locking
39 interface between GFS2 and the DLM, which is required to use GFS2
40 in a cluster environment.