Re: what's this error message?

tytso@MIT.EDU
Sun, 5 Apr 1998 21:56:52 -0400


From: ik5pvx@penny.ik5pvx.ampr.org (Pierfrancesco Caci)
Date: Sun, 5 Apr 1998 08:07:02 +0200 (CEST)

EXT2-fs warning (device 03:08): ext2_free_inode: bit already cleared
for inode 122619

Maybe repeated 4-5 times, then nothing more for another 10-20 hours.
I've noticed also that a few files suddenly disappear, this happend
twice with the /usr/bin/pppd-2.1.2 executable. May this be a bad
sector? Running `e2fsck -c` on the affected partition gave no results.

P.S. I had this problem since 2.1.88

Did the file suddenly disappear and then re-appear? (or did you have to
reinstall the missing AWOL executable?)

This may be a buffer cache corruption problem. Something to try ---
with your system *quiscent* (i.e., no other user processes active and
writing to the disk), run "e2fsck -n" on the mounted partition and see
what kind of complaints you get. You may get a few block bitmap
warnings if you have files open on the partition and the kernel has done
some preallocation. However, aside from that you shouldn't get any
other problems. (In particular, youo should see any inode bitmap
problems.) Then try shutting down the system cleanly and try doing a
e2fsck. If the problems disappear, it may be indicative of a buffer
cache corruption problem.

- Ted

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