diff options
| author | Josef Bacik <josef@toxicpanda.com> | 2020-10-16 11:29:19 -0400 |
|---|---|---|
| committer | David Sterba <dsterba@suse.com> | 2020-12-08 15:53:42 +0100 |
| commit | 882dbe0cec9651bf6a6df500178149453726c1e1 (patch) | |
| tree | 9e37e4f0081a984a96ad076ce5afbe1ef69ae224 /fs/btrfs/sysfs.c | |
| parent | 42437a6386ffeaaf200731e73d723ea491f3fe7d (diff) | |
btrfs: introduce mount option rescue=ignoredatacsums
There are cases where you can end up with bad data csums because of
misbehaving applications. This happens when an application modifies a
buffer in-flight when doing an O_DIRECT write. In order to recover the
file we need a way to turn off data checksums so you can copy the file
off, and then you can delete the file and restore it properly later.
Reviewed-by: Qu Wenruo <wqu@suse.com>
Signed-off-by: Josef Bacik <josef@toxicpanda.com>
Reviewed-by: David Sterba <dsterba@suse.com>
Signed-off-by: David Sterba <dsterba@suse.com>
Diffstat (limited to 'fs/btrfs/sysfs.c')
| -rw-r--r-- | fs/btrfs/sysfs.c | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/fs/btrfs/sysfs.c b/fs/btrfs/sysfs.c index e9f482989415..86f70a60447b 100644 --- a/fs/btrfs/sysfs.c +++ b/fs/btrfs/sysfs.c @@ -333,6 +333,7 @@ static const char *rescue_opts[] = { "usebackuproot", "nologreplay", "ignorebadroots", + "ignoredatacsums", }; static ssize_t supported_rescue_options_show(struct kobject *kobj, |