Block read "resulted in short read" when dumping root fs, but all else is well
- From: Marcin Owsiany <porridge@xxxxxxxxxx>
- Date: Sun, 30 Jul 2006 13:47:52 +0100
Hi all,
The box is a debian sarge, standard Debian kernel. Every morning I run
dump on all filesystems, level 0 on Sundays, 1 on Mon and Thu, 2 on Tue
and Fri, and 3 on Wed and Sat. I do this on live filesystems, mounted
rw. All is well except occasionally (two times over the last four weeks
- once on Friday and once on a Wednesday two weeks later) I get the following
error when dumping the root partition:
[...]
| DUMP: Dumping volume 1 on /srv/backup/2006-07-26_Wed_level_3/_001
| DUMP: Volume 1 started with block 1 at: Wed Jul 26 06:25:08 2006
| DUMP: dumping (Pass III) [directories]
| /dev/mapper/lv-pv: Attempt to read block from filesystem resulted in short read while reading inode #2
|
| DUMP: error reading command pipe: Connection reset by peer
| DUMP: Broken pipe
and dump exits with code 3
I could not find this message in dump source, so this is probably a libext2fs
message, which all the more probable that most finds on Google are reports of
running fsck on some seriously mangled filesystems.
However my filesystem seems OK. I haven't run fsck on it yet, but the fact that
the next dump (on the subsequent day) runs just fine, suggests that this is not
an error in the filesystem.
The strange thing is that inode #2 is the root directory itself, and stat
reports:
| File: `/'
| Size: 1024 Blocks: 2 IO Block: 4096 directory
| Device: fd01h/64769d Inode: 2 Links: 21
| Access: (0755/drwxr-xr-x) Uid: ( 0/ root) Gid: ( 0/ root)
| Access: 2006-07-30 14:41:03.845422864 +0200
| Modify: 2006-07-13 09:12:30.663241896 +0200
| Change: 2006-07-13 09:12:30.663241896 +0200
Which means it wasn't modified nor changed (I never remember the difference)
neither around the time dump ran, nor after that.
Does anyone have a clue on what might be happening?
Marcin
--
Marcin Owsiany <porridge@xxxxxxxxxx> http://marcin.owsiany.pl/
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