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Problem with ext3 filesystem



Hey,

I've a problem with an ext3 filesystem and don't know how to fix it or
find the failure :(

The Hardware:

Tyan mainboard, AMD Athlon CPU, ARECA ARC-1120 RaidController Raid5 with
400GB Seagate HD's, 756 MB Ram, other harddisks for system, network and
avm isdn controller.

Couse of the filesystem problems I run memtest and found one bad memory
module which I replaced yet.

The System:

Kernel 2.6.19.1
Debian Gnu/Linux 3.0  with e2fsck 1.37 (21-Mar-2005)


I've setup one ext3 partition with around 1.4 TB on the raid5 volume.
The first four month we run the raid without any problems. About two
month ago I noticed that the filesystem was remounted ro. A filesystem
check found a lot of errors. After a filesystem check and a new mount of
the partition and copy data on the partition you get the errors again.
Also with Kernel 2.6.17.3 I got this problems. A raid volume check with
the areca command line tools doesn't find any errors.

Errors from dmesg / kernel.log:


EXT3-fs: mounted filesystem with ordered data mode.
init_special_inode: bogus i_mode (113301)
init_special_inode: bogus i_mode (170101)
init_special_inode: bogus i_mode (115140)
init_special_inode: bogus i_mode (117302)
init_special_inode: bogus i_mode (111700)
EXT3-fs error (device sda1): ext3_readdir: bad entry in directory
#143278260: rec_len % 4 != 0 - offset=0, inode=1857588108, rec_len=8466,
name_len=34

Dec 22 14:25:03 datahaven kernel: init_special_inode: bogus i_mode (111501)
Dec 22 14:25:03 datahaven kernel: init_special_inode: bogus i_mode (113301)
Dec 22 14:25:03 datahaven kernel: init_special_inode: bogus i_mode (170101)
Dec 22 14:25:03 datahaven kernel: init_special_inode: bogus i_mode (115140)
Dec 22 14:25:19 datahaven kernel: EXT3-fs error (device sda1):
ext3_readdir: bad entry in directory #150569204: rec_len %% 4 != 0 -
offset=0, inode=3038782558,
rec_len=28425, name_len=75


Dec 22 06:31:43 datahaven kernel: init_special_inode: bogus i_mode (111501)
Dec 22 06:31:43 datahaven kernel: init_special_inode: bogus i_mode (113301)
Dec 22 06:31:43 datahaven kernel: init_special_inode: bogus i_mode (170101)
Dec 22 06:31:43 datahaven kernel: init_special_inode: bogus i_mode (115140)
Dec 22 06:31:54 datahaven kernel: EXT3-fs error (device sda1):
ext3_readdir: bad entry in directory #20351025: directory entry across
blocks - offset=0, inode=20353857, rec_len=13600, name_len=1
Dec 22 06:31:55 datahaven kernel: EXT3-fs error (device sda1):
ext3_readdir: bad entry in directory #20417957: rec_len %% 4 != 0 -
offset=96, inode=20437734, rec_len=27291, name_len=6
Dec 22 06:31:59 datahaven kernel: EXT3-fs error (device sda1):
ext3_readdir: bad entry in directory #21007912: directory entry across
blocks - offset=296, inode=21005643, rec_len=32184, name_len=25
Dec 22 06:32:24 datahaven kernel: init_special_inode: bogus i_mode (114764)
Dec 22 06:32:29 datahaven kernel: EXT3-fs error (device sda1):
ext3_readdir: bad entry in directory #21839877: rec_len %% 4 != 0 -
offset=24, inode=21839878, rec_len=22019, name_len=7
Dec 22 06:32:30 datahaven kernel: init_special_inode: bogus i_mode (55314)
Dec 22 06:32:34 datahaven kernel: init_special_inode: bogus i_mode (117302)
Dec 22 06:32:36 datahaven kernel: EXT3-fs error (device sda1):
ext3_readdir: bad entry in directory #22448122: rec_len %% 4 != 0 -
offset=24, inode=22417991, rec_len=28145, name_len=8

Any hints how to solve this problem or to isolate the failure ?

Best regards and thanks in advance for your help,

Jan


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