]>
Commit | Line | Data |
---|---|---|
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. |