[Bug 31730] JFS is flakey

[John Moser]

Public bug reported:
https://launchpad.net/malone/bugs/31730

Affects: linux-meta linux-amd64-k8 (Ubuntu)
       Severity: Normal
       Priority: (none set)
         Status: Unconfirmed

Description:
JFS seems very, very, very very very flakey.  I installed with a JFS
root, it only seems to replay journal by fsck (not at mount time).
Further, after 2 or 3 hard system locks (unstable AMD64 kernel 2.6.15-15
on dapper, it freezes quite a lot) the file system was corrupted to the
point that the dpkg database got destroyed in the last system failure;
the ubuntu Human GDM theme got corrupted somehow; and GNOME did not want
to load properly.

I am fairly convinced that the JFS driver is not well implemented, or
JFS is just not well designed.  In either case JFS should definitely NOT
be used at this point.

I have no idea how to deal with this bug.  It basically ammounts to,
"This FS are sux, it breaks far too much and should not be used."  The
problem is, across an AMD64, qemu, and x86 install (yes only 3 tries)
that occured years apart, it appears to be true; JFS is very, very
fragile.