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| author | Qu Wenruo <quwenruo@cn.fujitsu.com> | 2015-04-03 15:23:13 +0800 |
|---|---|---|
| committer | David Sterba <dsterba@suse.cz> | 2015-04-07 17:44:05 +0200 |
| commit | 96563f961c6a7fede89dc85cdeaec2158bbc66e8 (patch) | |
| tree | d90507df306107f4b7e7d1e39b00cffcc7c74845 /Documentation/btrfs-convert.txt | |
| parent | 45678c3048a1d74b99303763cea0729fe5df798b (diff) | |
btrfs-progs: Doc: Add warning and note on btrfs-convert.
Although btrfs-convert can rollback converted btrfs, it still has some
limitation to ensure rollback.
Add a warning on the limitations.
Also add a note for users who decides to go on with btrfs and don't need
the rollback ability.
Reported-by: Vytautas D <vytdau@gmail.com>
Reported-by: Tsutomu Itoh <t-itoh@jp.fujitsu.com>
Signed-off-by: Qu Wenruo <quwenruo@cn.fujitsu.com>
Signed-off-by: David Sterba <dsterba@suse.cz>
Diffstat (limited to 'Documentation/btrfs-convert.txt')
| -rw-r--r-- | Documentation/btrfs-convert.txt | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/Documentation/btrfs-convert.txt b/Documentation/btrfs-convert.txt index 8b3f05b4..09510fa6 100644 --- a/Documentation/btrfs-convert.txt +++ b/Documentation/btrfs-convert.txt @@ -15,6 +15,15 @@ DESCRIPTION and the original filesystem image is accessible as from separate subvolume named 'ext2_saved' as file image. +WARNING: If one hopes to rollback to ext2/3/4, they should not execute +*btrfs balance* command on converted btrfs, since it will change the extent +layout and make *btrfs-convert* unable to rollback. + +NOTE: If one is satisfied with converted btrfs, and not longer wants to +rollback to ext2/3/4, it is highly recommended to remove 'ext2_saved' subvolume +and execute *btrfs filesystem defragment* and *btrfs balance* command on the +converted btrfs. + OPTIONS ------- -d|--no-datasum:: |