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Re: Consistent kernel panic on volume mount

On Wed, 19 Jan 2005, Carsten G Pedersen <email@hidden> wrote:

Andrew Gallatin <email@hidden> wrote on 01/19/2005 10:07:48 PM: 

I looked at this a bit earlier.  This code seems to get called when
replaying the journal.  Would it work to simply mount the filesystem
read-only (so as to avoid writes), and then to disable journaling
using hfs.util?  Or will the kernel insist on replaying the journal
even with a read-only fs?

Unfortunately yes it does seem to be called when mounting read-only too -
I get the same panic when doing a mount_hfs -o rdonly -j 

Instead of mounting the volume, try just doing

fsck_hfs -f -n /dev/disk#s#

with # being the appropriate numbers for the volume in question. This will cause
the journal to be ignored and disable any writes. See what errors it returns. If it
doesn't show any serious errors, you might remove the -n. This -should- cause the
journal (which sounds like it is corrupt) to be discarded, and at that point, you
should be able to mount the disk. If that doesn't occur, something Really Weird(tm)
is going on.

That said, as someone else already mentioned, I'd be tempted to do a block-level
backup of the drive to a file on a larger disk using dd before I ran fsck_hfs
just to be safe.


David

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