[linux-lvm] Strange file system errors
Kai Weber
lists at glorybox.de
Wed Jan 14 06:36:01 UTC 2004
Hi,
if I have to reboot my system without a clean shutdown the recovered
filesystems are corrupt. Files which I edited recently and maybe not yet
written to the buffer are recovered with no or corrupt contents.
For example:
$ ls -l config
-rw------- 1 bond bond 19622 Jan 14 12:04 .config
$ stat config
File: `config'
Size: 19622 Blocks: 0 IO Block: 4096 regular file
Device: fe01h/65025d Inode: 20967432 Links: 1
Access: (0600/-rw-------) Uid: ( 1000/ bond) Gid: ( 1000/ bond)
Access: 2004-01-14 12:27:01.000000000 +0100
Modify: 2004-01-14 12:04:16.000000000 +0100
Change: 2004-01-14 12:04:16.000000000 +0100
$ cat config
$ less config
"config" may be a binary file. See it anyway?
^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@
[...]
$ strace -e write cat config
write(1, "\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0"..., 4096) = 4096
write(1, "\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0"..., 4096) = 4096
write(1, "\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0"..., 4096) = 4096
write(1, "\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0"..., 4096) = 4096
write(1, "\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0"..., 3238) = 3238
I can force this error by pressing the reset button with an open file in my
text editor. It seems to have nothing to do with the underlying file
system. I have XFS and ext3 partitions. I would like to know, if it is a
LVM problem.
Kernel 2.6.1
LVM version: 2.00.08 (2003-11-14)
Library version: 1.00.07-ioctl (2003-11-21)
Driver version: 4.0.0
--
Kai Weber
» kai.weber at glorybox.de
http://www.glorybox.de
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