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| author | Qu Wenruo <quwenruo@cn.fujitsu.com> | 2016-01-19 05:23:02 +0300 |
|---|---|---|
| committer | David Sterba <dsterba@suse.com> | 2016-02-12 17:14:14 +0300 |
| commit | 8dcddfa048de637c8bbfa20ffd22757aeab7c604 (patch) | |
| tree | d8d9ec6222a0334698ab8443888ab21f7dcb9ce4 /Documentation/filesystems | |
| parent | 388f7b1d6e8ca06762e2454d28d6c3c55ad0fe95 (diff) | |
| download | linux-8dcddfa048de637c8bbfa20ffd22757aeab7c604.tar.xz | |
btrfs: Introduce new mount option usebackuproot to replace recovery
Current "recovery" mount option will only try to use backup root.
However the word "recovery" is too generic and may be confusing for some
users.
Here introduce a new and more specific mount option, "usebackuproot" to
replace "recovery" mount option.
"Recovery" will be kept for compatibility reason, but will be
deprecated.
Also, since "usebackuproot" will only affect mount behavior and after
open_ctree() it has nothing to do with the filesystem, so clear the flag
after mount succeeded.
This provides the basis for later unified "norecovery" mount option.
Signed-off-by: Qu Wenruo <quwenruo@cn.fujitsu.com>
[ dropped usebackuproot from show_mount, added note about 'recovery' to
docs ]
Signed-off-by: David Sterba <dsterba@suse.com>
Diffstat (limited to 'Documentation/filesystems')
| -rw-r--r-- | Documentation/filesystems/btrfs.txt | 11 |
1 files changed, 8 insertions, 3 deletions
diff --git a/Documentation/filesystems/btrfs.txt b/Documentation/filesystems/btrfs.txt index c772b47e7ef0..a2b1c508c32c 100644 --- a/Documentation/filesystems/btrfs.txt +++ b/Documentation/filesystems/btrfs.txt @@ -168,10 +168,15 @@ Options with (*) are default options and will not show in the mount options. notreelog Enable/disable the tree logging used for fsync and O_SYNC writes. - recovery - Enable autorecovery attempts if a bad tree root is found at mount time. - Currently this scans a list of several previous tree roots and tries to + usebackuproot + Enable attempts to use backup tree roots if a bad tree root is found at + mount time. + Currently this scans a list of 4 previous tree roots and tries to use the first readable. + And since the mount option doesn't affect any behavior after mount, + it won't be shown in mount info. + Prior to 4.6, this was done by 'recovery' option that has been + deprecated, but will work. rescan_uuid_tree Force check and rebuild procedure of the UUID tree. This should not |