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
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.
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
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
30 config GFS2_FS_LOCKING_DLM
31 bool "GFS2 DLM locking"
32 depends on (GFS2_FS!=n) && NET && INET && (IPV6 || IPV6=n) && HOTPLUG
34 Multiple node locking module for GFS2
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.