Re: ext3: bump mount count on journal replay
From: Andreas Dilger (adilger_at_clusterfs.com)
Date: 07/14/04
- Previous message: Peter Osterlund: "Re: Can't make use of swap memory in 2.6.7-bk19"
- In reply to: Pavel Machek: "ext3: bump mount count on journal replay"
- Next in thread: Pavel Machek: "Re: ext3: bump mount count on journal replay"
- Reply: Pavel Machek: "Re: ext3: bump mount count on journal replay"
- Messages sorted by: [ date ] [ thread ] [ subject ] [ author ]
Date: Wed, 14 Jul 2004 14:05:54 -0600 To: Pavel Machek <pavel@ucw.cz>
On Jul 14, 2004 15:15 +0200, Pavel Machek wrote:
> Currently, you get fsck "just to be sure" once every ~30 clean
> mounts or ~30 hard shutdowns. I believe that hard shutdown is way more
> likely to cause some disk corruption, so it would make sense to fsck
> more often when system is hit by hard shutdown.
>
> What about this patch?
>
> @@ -1484,9 +1485,11 @@
> * root first: it may be modified in the journal!
> */
> if (!test_opt(sb, NOLOAD) &&
> - EXT3_HAS_COMPAT_FEATURE(sb, EXT3_FEATURE_COMPAT_HAS_JOURNAL)) {
> - if (ext3_load_journal(sb, es))
> - goto failed_mount2;
> + EXT3_HAS_COMPAT_FEATURE(sb, EXT3_FEATURE_COMPAT_HAS_JOURNAL)) { {
> + mount_cost = 5;
> + if (ext3_load_journal(sb, es))
> + goto failed_mount2;
> + }
AFAICS, this just means that if you have an ext3 filesystem
(i.e. has_journal) that you will fsck 5x as often, not so great. You
should instead check for INCOMPAT_RECOVER instead of HAS_JOURNAL.
Instead, you could change this to only increment the mount count after
a clean unmount 20% of the time (randomly). Since most people bitch
about the full fsck anyways this is probably the better choice than
increasing the frequency of checks and forcing the users to change the
check interval to get the old behaviour.
Cheers, Andreas
-- Andreas Dilger http://sourceforge.net/projects/ext2resize/ http://members.shaw.ca/adilger/ http://members.shaw.ca/golinux/
-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@vger.kernel.org
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/
- application/pgp-signature attachment: stored
- Previous message: Peter Osterlund: "Re: Can't make use of swap memory in 2.6.7-bk19"
- In reply to: Pavel Machek: "ext3: bump mount count on journal replay"
- Next in thread: Pavel Machek: "Re: ext3: bump mount count on journal replay"
- Reply: Pavel Machek: "Re: ext3: bump mount count on journal replay"
- Messages sorted by: [ date ] [ thread ] [ subject ] [ author ]
Relevant Pages
|
|
