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SubjectRe: Bug in ext3
On Thu, Nov 15, 2001 at 12:48:26PM -0800, Andrew Morton wrote:
> Ben Collins wrote:
> >
> > > Please send the output of dumpe2fs, and of `fsck -fy'.
> >
> > No, it has always been an ext2 filesystem, and never was ext3. Fsck
> > shows no errors. The point being that I do _not_ want my root filesystem
> > to be ext3, but I do want ext3 built into the kernel. That case should
> > not cause a problem like I have seen.
> >
>
> ext3 thinks that the filesystem's superblock has the
> EXT3_FEATURE_COMPAT_HAS_JOURNAL bit set in the s_feature_compat
> field of the on-disk superblock.
>
> It's probable that that bit _is_ set. ext2 will never notice it.
>
> Please: the dumpe2fs output?

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


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