kernel-ark/fs/jbd2
Hidehiro Kawai 5bf5683a33 ext4: add an option to control error handling on file data
If the journal doesn't abort when it gets an IO error in file data
blocks, the file data corruption will spread silently.  Because
most of applications and commands do buffered writes without fsync(),
they don't notice the IO error.  It's scary for mission critical
systems.  On the other hand, if the journal aborts whenever it gets
an IO error in file data blocks, the system will easily become
inoperable.  So this patch introduces a filesystem option to
determine whether it aborts the journal or just call printk() when
it gets an IO error in file data.

If you mount an ext4 fs with data_err=abort option, it aborts on file
data write error.  If you mount it with data_err=ignore, it doesn't
abort, just call printk().  data_err=ignore is the default.

Here is the corresponding patch of the ext3 version:
http://kerneltrap.org/mailarchive/linux-kernel/2008/9/9/3239374

Signed-off-by: Hidehiro Kawai <hidehiro.kawai.ez@hitachi.com>
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
2008-10-10 22:12:43 -04:00
..
checkpoint.c jbd2: fix error handling for checkpoint io 2008-10-10 20:29:13 -04:00
commit.c ext4: add an option to control error handling on file data 2008-10-10 22:12:43 -04:00
journal.c jbd2: fix error handling for checkpoint io 2008-10-10 20:29:13 -04:00
Makefile
recovery.c jbd2: fix error handling for checkpoint io 2008-10-10 20:29:13 -04:00
revoke.c jdb2: replace remaining __FUNCTION__ occurrences 2008-04-17 10:38:59 -04:00
transaction.c lockdep: rename map_[acquire|release]() => lock_map_[acquire|release]() 2008-08-11 10:30:30 +02:00