Re: Bug in ext3

[Andrew Morton <akpm@zip.com.au>]

Ben Collins wrote:
> 
> Seems it does have the field set. I guess the bug is then that if there
> is no journal, then it shoudl fail to mount it, so ext2 will take over.
> Is there any reason to mount a partition as ext3 if there is no journal
> to be found?
> 
> Filesystem volume name:   <none>
> Last mounted on:          <not available>
> Filesystem UUID:          <none>
> Filesystem magic number:  0xEF53
> Filesystem revision #:    1 (dynamic)
> Filesystem features:      has_journal filetype sparse_super
> Filesystem state:         not clean
> Errors behavior:          Continue
> Filesystem OS type:       Linux
> Inode count:              1015808
> Block count:              2028288
> Reserved block count:     101414
> Free blocks:              372624
> Free inodes:              690438
> First block:              0
> Block size:               4096
> Fragment size:            4096
> Blocks per group:         32768
> Fragments per group:      32768
> Inodes per group:         16384
> Inode blocks per group:   512
> Last mount time:          Thu Nov 15 10:07:12 2001
> Last write time:          Thu Nov 15 15:55:23 2001
> Mount count:              2
> Maximum mount count:      20
> Last checked:             Thu Nov 15 08:48:40 2001
> Check interval:           15552000 (6 months)
> Next check after:         Tue May 14 09:48:40 2002
> Reserved blocks uid:      0 (user root)
> Reserved blocks gid:      0 (group root)
> First inode:              11
> Inode size:               128

Are you running a current version of e2fsprogs?  1.25?

If you are, then this indicates that the filesystem has has_journal
set, but it doesn't have a journal inode.  That is certainly something
which e2fsck should detect and fix.  This may be a fsck bug.

You should be able to fix this with `tune2fs -O ^has-journal' on
the unmounted or readonly fs.