2002-01-09 18:44:06

by Steve Lord

[permalink] [raw]
Subject: ext3 umount oops in 2.5.2-pre10


It looks like ext3 does not work if you do not use an external
journal device - the journal_bdev field is not initialized and
ext3_put_super goes belly up:


At the very least it needs this:

===========================================================================
Index: linux/fs/ext3/super.c
===========================================================================

--- /usr/tmp/TmpDir.13226-0/linux/fs/ext3/super.c_1.6 Wed Jan 9 12:38:48 2002
+++ linux/fs/ext3/super.c Wed Jan 9 12:26:00 2002
@@ -429,7 +429,7 @@
J_ASSERT(list_empty(&sbi->s_orphan));

invalidate_bdev(sb->s_bdev, 0);
- if (sbi->journal_bdev != sb->s_bdev) {
+ if (sbi->journal_bdev && (sbi->journal_bdev != sb->s_bdev)) {
/*
* Invalidate the journal device's buffers. We don't want them
* floating about in memory - the physical journal device may



--

Steve


2002-01-09 22:16:21

by Alessandro Suardi

[permalink] [raw]
Subject: Re: ext3 umount oops in 2.5.2-pre10

Steve Lord wrote:
>
> It looks like ext3 does not work if you do not use an external
> journal device - the journal_bdev field is not initialized and
> ext3_put_super goes belly up:

I have seen the umount oops -but- not 100% of the time. No time
to copy the oops text since my laptop powers off, and as the
issue occurred two times out of five or six, I haven't yet had
a very strong need to hunt this further, confident someone more
clueful than me (possibly the vast majority of l-k :) would do
very soon. It looks like it happened. Heh. As always.

> At the very least it needs this:

[snipped patch]

OK, going to the usual patch/build/reboot/test sequence now.

Will let you know in 2 days at most. Thanks !

--alessandro

"this machine will, will not communicate
these thoughts and the strain I am under
be a world child, form a circle before we all go under"
(Radiohead, "Street Spirit [fade out]")

2002-01-09 23:46:15

by Alessandro Suardi

[permalink] [raw]
Subject: Re: ext3 umount oops in 2.5.2-pre10

Alessandro Suardi wrote:
>
> Steve Lord wrote:
> >
> > It looks like ext3 does not work if you do not use an external
> > journal device - the journal_bdev field is not initialized and
> > ext3_put_super goes belly up:
>
> I have seen the umount oops -but- not 100% of the time. No time
> to copy the oops text since my laptop powers off, and as the
> issue occurred two times out of five or six, I haven't yet had
> a very strong need to hunt this further, confident someone more
> clueful than me (possibly the vast majority of l-k :) would do
> very soon. It looks like it happened. Heh. As always.
>
> > At the very least it needs this:
>
> [snipped patch]
>
> OK, going to the usual patch/build/reboot/test sequence now.

Of course the last 252p10 shutdown saw the oops, leaving me
with the doubt that I didn't attend all the shutdowns :/

And of course the patch makes the oops go away (four reboots
in a row without any problem). Thanks !

Ciao,

--alessandro

"this machine will, will not communicate
these thoughts and the strain I am under
be a world child, form a circle before we all go under"
(Radiohead, "Street Spirit [fade out]")