Red Hat Bugzilla – Bug 500260
e2fsck self-reports a bug
Last modified: 2009-12-18 04:25:35 EST
[root@localhost ~]# e2fsck -C 0 -t -t -v -f -y /dev/sdb1
e2fsck 1.41.4 (27-Jan-2009)
to repair a filesystem on an external USB drive I noticed a
'PROGRAMMING BUG IN E2FSCK' message shown below. The filesystem was
NOT mounted during the check. /dev/sdb1 is an external USB drive with
ext3 created a few years ago. (A laptop was removed from its bay
without unmounting the fs a few times, thus the need for a repair.)
I can provide a complete output of the e2fsck session if needed.
Package version e2fsprogs-1.41.4-5.fc10.src.rpm.
Unattached inode 16040267
Connect to /lost+found? yes
WARNING: PROGRAMMING BUG IN E2FSCK!
OR SOME BONEHEAD (YOU) IS CHECKING A MOUNTED (LIVE) FILESYSTEM.
inode_link_info is 65500, inode.i_links_count is 65535. They should be the same!
Inode 16040267 ref count is 65535, should be 1. Fix? yes
Unattached inode 16040331
Connect to /lost+found? yes
heh, that's a nice message.
Can you provide an e2image of the filesystem, and I'll see if that reproduces the problem?
> Can you provide an e2image of the filesystem, and I'll see if that reproduces
> the problem?
The un-repaired image is gone. Immediately after the fsck run that reported
the bug I ran fsck again (with exactly the same command line). That time it
did not find any problems on the filesystem. Since yesterday tons of files
were removed and others copied to that disk.
I hoped that one could look at the program code and understand how the
counter could became wrong and what assumptions are to be fixed.
Failed internal consistency checks are usually
easier to debug than just a segfault...
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