Problem with ext3 filesystem

[Jan]

The machine is used mainly as fileserver with samba and netatalk. this
should be the only server applications which are placing data on the
drive. For testing I disabled netatalk yet. I can do an fsck and the
filesystem is fine after that. I do a remount and copy witch cp a few
GB, do an unmount and the fsck will have errors again in the target
directory of the copied files. In this test there are no samba or
netatalk users connected. When I copied files with a client connected
with samba I got the same errors.

Jan

> What is this machine being used for, primarily?  What types of local
> applications/binaries are placing data on the drive?
> 
> - Kevin
> 
> Jan wrote:
>> 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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>