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| author | Qu Wenruo <quwenruo@cn.fujitsu.com> | 2014-01-06 09:58:31 +0800 |
|---|---|---|
| committer | Chris Mason <clm@fb.com> | 2014-01-28 13:20:19 -0800 |
| commit | a258af7a3e395a1d36190c81614dca0bcb5f6012 (patch) | |
| tree | bd04146ab46bd470efbc4728cd0e9c4b7b472157 /Documentation | |
| parent | bd0330ad2174d1a5f762eee2ee58f0148f10d575 (diff) | |
| download | linux-a258af7a3e395a1d36190c81614dca0bcb5f6012.tar.bz2 | |
btrfs: Add datacow mount option.
Add datacow mount option to enable copy-on-write with
remount option.
Signed-off-by: Qu Wenruo <quwenruo@cn.fujitsu.com>
Reviewed-by: David Sterba <dsterba@suse.cz>
Signed-off-by: Josef Bacik <jbacik@fb.com>
Signed-off-by: Chris Mason <clm@fb.com>
Diffstat (limited to 'Documentation')
| -rw-r--r-- | Documentation/filesystems/btrfs.txt | 5 |
1 files changed, 3 insertions, 2 deletions
diff --git a/Documentation/filesystems/btrfs.txt b/Documentation/filesystems/btrfs.txt index 79c08f368ace..bbd1f0f57ce9 100644 --- a/Documentation/filesystems/btrfs.txt +++ b/Documentation/filesystems/btrfs.txt @@ -154,9 +154,10 @@ Options with (*) are default options and will not show in the mount options. (non-battery-backed) write-back cache, nobarrier option will lead to filesystem corruption on a system crash or power loss. + datacow(*) nodatacow - Disable data copy-on-write for newly created files. Implies nodatasum, - and disables all compression. + Enable/disable data copy-on-write for newly created files. + Nodatacow implies nodatasum, and disables all compression. nodatasum Disable data checksumming for newly created files. |