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author | Andrew Price <anprice@redhat.com> | 2020-11-04 16:29:15 +0000 |
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committer | Andreas Gruenbacher <agruenba@redhat.com> | 2020-12-01 00:25:20 +0100 |
commit | d9593868cd58a5c843d871fe728deef166e91eee (patch) | |
tree | a054131ec2446103a817d8bbfc0a399597512af9 /Documentation/filesystems/gfs2.rst | |
parent | dd0ecf544125639e54056d851e4887dbb94b6d2f (diff) | |
download | linux-stable-d9593868cd58a5c843d871fe728deef166e91eee.tar.gz linux-stable-d9593868cd58a5c843d871fe728deef166e91eee.tar.bz2 linux-stable-d9593868cd58a5c843d871fe728deef166e91eee.zip |
Documentation: Update filesystems/gfs2.rst
Remove an obsolete URL and generally bring the doc up-to-date
Signed-off-by: Andrew Price <anprice@redhat.com>
Signed-off-by: Andreas Gruenbacher <agruenba@redhat.com>
Diffstat (limited to 'Documentation/filesystems/gfs2.rst')
-rw-r--r-- | Documentation/filesystems/gfs2.rst | 37 |
1 files changed, 18 insertions, 19 deletions
diff --git a/Documentation/filesystems/gfs2.rst b/Documentation/filesystems/gfs2.rst index 8d1ab589ce18..1bc48a13430c 100644 --- a/Documentation/filesystems/gfs2.rst +++ b/Documentation/filesystems/gfs2.rst @@ -1,53 +1,52 @@ .. SPDX-License-Identifier: GPL-2.0 -================== -Global File System -================== +==================== +Global File System 2 +==================== -https://fedorahosted.org/cluster/wiki/HomePage - -GFS is a cluster file system. It allows a cluster of computers to +GFS2 is a cluster file system. It allows a cluster of computers to simultaneously use a block device that is shared between them (with FC, -iSCSI, NBD, etc). GFS reads and writes to the block device like a local +iSCSI, NBD, etc). GFS2 reads and writes to the block device like a local file system, but also uses a lock module to allow the computers coordinate their I/O so file system consistency is maintained. One of the nifty -features of GFS is perfect consistency -- changes made to the file system +features of GFS2 is perfect consistency -- changes made to the file system on one machine show up immediately on all other machines in the cluster. -GFS uses interchangeable inter-node locking mechanisms, the currently +GFS2 uses interchangeable inter-node locking mechanisms, the currently supported mechanisms are: lock_nolock - - allows gfs to be used as a local file system + - allows GFS2 to be used as a local file system lock_dlm - - uses a distributed lock manager (dlm) for inter-node locking. + - uses the distributed lock manager (dlm) for inter-node locking. The dlm is found at linux/fs/dlm/ -Lock_dlm depends on user space cluster management systems found +lock_dlm depends on user space cluster management systems found at the URL above. -To use gfs as a local file system, no external clustering systems are +To use GFS2 as a local file system, no external clustering systems are needed, simply:: $ mkfs -t gfs2 -p lock_nolock -j 1 /dev/block_device $ mount -t gfs2 /dev/block_device /dir -If you are using Fedora, you need to install the gfs2-utils package -and, for lock_dlm, you will also need to install the cman package -and write a cluster.conf as per the documentation. For F17 and above -cman has been replaced by the dlm package. +The gfs2-utils package is required on all cluster nodes and, for lock_dlm, you +will also need the dlm and corosync user space utilities configured as per the +documentation. + +gfs2-utils can be found at https://pagure.io/gfs2-utils GFS2 is not on-disk compatible with previous versions of GFS, but it is pretty close. -The following man pages can be found at the URL above: +The following man pages are available from gfs2-utils: ============ ============================================= fsck.gfs2 to repair a filesystem gfs2_grow to expand a filesystem online gfs2_jadd to add journals to a filesystem online tunegfs2 to manipulate, examine and tune a filesystem - gfs2_convert to convert a gfs filesystem to gfs2 in-place + gfs2_convert to convert a gfs filesystem to GFS2 in-place mkfs.gfs2 to make a filesystem ============ ============================================= |