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