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authorVasily Averin <vvs@sw.ru>2006-09-27 01:49:33 -0700
committerLinus Torvalds <torvalds@g5.osdl.org>2006-09-27 08:26:09 -0700
commit7543fc7b3abfee8c6cd6349ebd5e5fde02fac984 (patch)
treec3525ab6440599fcde96bda0cd41db30308dc2b3 /fs/ext3/super.c
parent[PATCH] ext3: more comments about block allocation/reservation code (diff)
downloadlinux-dev-7543fc7b3abfee8c6cd6349ebd5e5fde02fac984.tar.xz
linux-dev-7543fc7b3abfee8c6cd6349ebd5e5fde02fac984.zip
[PATCH] ext3: wrong error behavior
SWsoft Virtuozzo/OpenVZ Linux kernel team has discovered that ext3 error behavior was broken in linux kernels since 2.5.x versions by the following patch: 2002/10/31 02:15:26-05:00 tytso@snap.thunk.org Default mount options from superblock for ext2/3 filesystems http://linux.bkbits.net:8080/linux-2.6/gnupatch@3dc0d88eKbV9ivV4ptRNM8fBuA3JBQ In case ext3 file system is mounted with errors=continue (EXT3_ERRORS_CONTINUE) errors should be ignored when possible. However at present in case of any error kernel aborts journal and remounts filesystem to read-only. Such behavior was hit number of times and noted to differ from that of 2.4.x kernels. This patch fixes this: - do nothing in case of EXT3_ERRORS_CONTINUE, - set EXT3_MOUNT_ABORT and call journal_abort() in all other cases - panic() should be called after ext3_commit_super() to save sb marked as EXT3_ERROR_FS Signed-off-by: Vasily Averin <vvs@sw.ru> Acked-by: Kirill Korotaev <dev@sw.ru> Cc: Theodore Ts'o <tytso@mit.edu> Cc: "Stephen C. Tweedie" <sct@redhat.com> Cc: Mingming Cao <cmm@us.ibm.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Diffstat (limited to '')
-rw-r--r--fs/ext3/super.c11
1 files changed, 6 insertions, 5 deletions
diff --git a/fs/ext3/super.c b/fs/ext3/super.c
index bc7a768f9bb4..4b526b496102 100644
--- a/fs/ext3/super.c
+++ b/fs/ext3/super.c
@@ -159,20 +159,21 @@ static void ext3_handle_error(struct super_block *sb)
if (sb->s_flags & MS_RDONLY)
return;
- if (test_opt (sb, ERRORS_RO)) {
- printk (KERN_CRIT "Remounting filesystem read-only\n");
- sb->s_flags |= MS_RDONLY;
- } else {
+ if (!test_opt (sb, ERRORS_CONT)) {
journal_t *journal = EXT3_SB(sb)->s_journal;
EXT3_SB(sb)->s_mount_opt |= EXT3_MOUNT_ABORT;
if (journal)
journal_abort(journal, -EIO);
}
+ if (test_opt (sb, ERRORS_RO)) {
+ printk (KERN_CRIT "Remounting filesystem read-only\n");
+ sb->s_flags |= MS_RDONLY;
+ }
+ ext3_commit_super(sb, es, 1);
if (test_opt(sb, ERRORS_PANIC))
panic("EXT3-fs (device %s): panic forced after error\n",
sb->s_id);
- ext3_commit_super(sb, es, 1);
}
void ext3_error (struct super_block * sb, const char * function,