Re: [Jfs-discussion] JFS in SuSE 7.2 with 2.4.4 kernel - problems

[Dave K. <sh...@au...>]

jf...@id... wrote:

> Now there are two problems I'm having.
> 
> 1. If I umount my jfs partition and try to mount it again, I get an error
>    and a subsequent call to fsck tells me the file system is dirty. A
>    subsequent call to fsck.jfs -a fixes it without errors.
>    Why doesn't umount clean the FS? (I do have the jfs utilities in
>    a different directory frmo /sbin, but in the path. Can this be the
>    reason? I'll check myself tonight)

I haven't heard of this problem before.  Are any errors logged to
/var/log/messages when unmounting the partition?

I don't think having the utilities in another directory would make a
difference here.  It may prevent you from running fsck against the
partition, but you shouldn't have trouble running fsck.jfs explicitly.

> 
> 2. After a reboot and a couple of remounts, the JFS partition suddenly has
>    a completely wrong usage value. It shows about 290kByte used of 1GB,
>    but in fact I used 700MB of it! I did verify the file contents with a
>    diff to the orginals and  they are correct. So no data was lost, but it
>    shows the wrong values. I'm worried about it writing over some existing
>    stuff... ?

Running fsck.jfs -d against the partition with no other flags might be
useful to report any problems with the block maps and summary
information.  Running fsck.jfs -f against the partition will rebuild the
maps and summary information, and if that's the only problem, should fix
things until they get messed up again.

> 
> One remark:
> 
> I could successfully mount, read and write to and from an OS/2 JFS volume
> and there I didn't have the problems mentioned above!

This could indicate that there is a problem with the recently added code
to fix the "rm -rf" problem.  The fix involved a disk format change that
was incompatible with the OS/2 format.  The new code is not run when an
OS/2-formatted partition is mounted.
> 
> Any pointers? Any request for more details? I'm happy to supply more, if
> given an idea what to do.

The JFS team is in Ottawa now attending OLS, so it will probably be next
week before I get a chance to really look at this hard.  If you find
anything useful in /var/log/messages, or by running fsck.jfs -d, please
send it to me.

> 
> Thanks!
> Jocki

Thank you!

Dave