| David Brazdil | 0f672f6 | 2019-12-10 10:32:29 +0000 | [diff] [blame^] | 1 | # SPDX-License-Identifier: GPL-2.0-only |
| Andrew Scull | b4b6d4a | 2019-01-02 15:54:55 +0000 | [diff] [blame] | 2 | config GFS2_FS |
| 3 | tristate "GFS2 file system support" |
| Andrew Scull | b4b6d4a | 2019-01-02 15:54:55 +0000 | [diff] [blame] | 4 | select FS_POSIX_ACL |
| 5 | select CRC32 |
| 6 | select LIBCRC32C |
| 7 | select QUOTACTL |
| 8 | select FS_IOMAP |
| 9 | help |
| 10 | A cluster filesystem. |
| 11 | |
| 12 | Allows a cluster of computers to simultaneously use a block device |
| 13 | that is shared between them (with FC, iSCSI, NBD, etc...). GFS reads |
| 14 | and writes to the block device like a local filesystem, but also uses |
| 15 | a lock module to allow the computers coordinate their I/O so |
| 16 | filesystem consistency is maintained. One of the nifty features of |
| 17 | GFS is perfect consistency -- changes made to the filesystem on one |
| 18 | machine show up immediately on all other machines in the cluster. |
| 19 | |
| 20 | To use the GFS2 filesystem in a cluster, you will need to enable |
| 21 | the locking module below. Documentation and utilities for GFS2 can |
| 22 | be found here: http://sources.redhat.com/cluster |
| 23 | |
| 24 | The "nolock" lock module is now built in to GFS2 by default. If |
| 25 | you want to use the DLM, be sure to enable IPv4/6 networking. |
| 26 | |
| 27 | config GFS2_FS_LOCKING_DLM |
| 28 | bool "GFS2 DLM locking" |
| 29 | depends on (GFS2_FS!=n) && NET && INET && (IPV6 || IPV6=n) && \ |
| 30 | CONFIGFS_FS && SYSFS && (DLM=y || DLM=GFS2_FS) |
| 31 | help |
| 32 | Multiple node locking module for GFS2 |
| 33 | |
| 34 | Most users of GFS2 will require this. It provides the locking |
| 35 | interface between GFS2 and the DLM, which is required to use GFS2 |
| 36 | in a cluster environment. |