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authorHidehiro Kawai <hidehiro.kawai.ez@hitachi.com>2008-10-18 23:27:57 -0400
committerLinus Torvalds <torvalds@linux-foundation.org>2008-10-20 11:52:37 -0400
commit0e4fb5e283870757024294bc4567a7c59d936f0b (patch)
tree162263fe9e712124d3df886ca57d8db752a3237d /fs/jbd/commit.c
parent46d01a225e694f1a4343beea44f1e85105aedd7e (diff)
ext3: 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 a ext3 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. Signed-off-by: Hidehiro Kawai <hidehiro.kawai.ez@hitachi.com> Cc: Jan Kara <jack@ucw.cz> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'fs/jbd/commit.c')
-rw-r--r--fs/jbd/commit.c2
1 files changed, 2 insertions, 0 deletions
diff --git a/fs/jbd/commit.c b/fs/jbd/commit.c
index d6a6659f3e46..25719d902c51 100644
--- a/fs/jbd/commit.c
+++ b/fs/jbd/commit.c
@@ -482,6 +482,8 @@ void journal_commit_transaction(journal_t *journal)
482 printk(KERN_WARNING 482 printk(KERN_WARNING
483 "JBD: Detected IO errors while flushing file data " 483 "JBD: Detected IO errors while flushing file data "
484 "on %s\n", bdevname(journal->j_fs_dev, b)); 484 "on %s\n", bdevname(journal->j_fs_dev, b));
485 if (journal->j_flags & JFS_ABORT_ON_SYNCDATA_ERR)
486 journal_abort(journal, err);
485 err = 0; 487 err = 0;
486 } 488 }
487 489