Bug #571444 “Boot hangs and unable to continue when automount di... : Bugs : “mountall” package : Ubuntu: Same here (using Ubuntu 10.04 server). One of my hard drives is formatted with JFS but I forgot to install jfsutils. Now when I try to boot it says:
fsck: fsck.jfs: not found
fsck: Error 2 while executing fsck.jfs for /dev/sdb1
linuxroot: clean, ...
mount: wrong fs type, bad option, bad superblock on /dev/sdb1
�������missing codepage or helper program, ...
mountall: mount /mnt/backup  terminated with status 32
mountall: Filesystem could not be mounted: /mnt/backup
And there the boot process is stuck. No shell, no login prompt, just nothing. Happens with "normal" boot as well as "recovery mode".
After installing "jfsutils" by using a live cd the problem has disappeared.
Seems 11.10 is also having the same issue. JFS is supported by the kernel, but the fsck util isn't installed by default and as such my boots hang. Time to install JFSUTILS package.