This started to happen during larger (10MB-420MB) rsync based writes to
a striped ext3 partition (/dev/md11) residing on 4 scsi disks which is
mounted with defaults, i.e. data=ordered (rsync over 100Mbps link):
Dec 1 12:25:43 pollux kernel: EXT3-fs error (device md(9,11)):
ext3_new_block:
Allocating block in system zone - block = 114696
Dec 1 12:25:43 pollux kernel: EXT3-fs error (device md(9,11)):
ext3_new_block:
Allocating block in system zone - block = 114697
Dec 1 12:25:43 pollux kernel: EXT3-fs error (device md(9,11)):
ext3_new_block:
Allocating block in system zone - block = 114700
Dec 1 12:25:43 pollux kernel: EXT3-fs error (device md(9,11)):
ext3_new_block:
Allocating block in system zone - block = 114701
Dec 1 12:25:43 pollux kernel: EXT3-fs error (device md(9,11)):
ext3_new_block:
Allocating block in system zone - block = 114702
Dec 1 12:25:43 pollux kernel: EXT3-fs error (device md(9,11)):
ext3_new_block:
Allocating block in system zone - block = 114706
<snip>
Dec 1 22:17:55 pollux kernel: EXT3-fs error (device md(9,11)):
ext3_free_blocks
: Freeing blocks in system zones - Block = 573501, count = 2
Dec 1 22:17:55 pollux kernel: EXT3-fs error (device md(9,11)):
ext3_free_blocks
: Freeing blocks in system zones - Block = 573552, count = 14
Dec 1 22:17:55 pollux kernel: Assertion failure in journal_forget() at
transaction.c:1225: "!jh->b_committed_data"
Trying to access the partition resulted in processes hanging in D state:
5336 pts/0 D 0:00 ls -a -N --color=tty -T 0 -l /mnt/data8
e2fstools version is 1.32 and the partition was created with this
version using 'mke2fs -j -b 2048 -i 4096 -R stride=16 /dev/md11'.
An earlier dump of the partition data using tune2fs -l gave:
tune2fs 1.32 (09-Nov-2002)
Filesystem volume name: <none>
Last mounted on: <not available>
Filesystem UUID: 7c8d7827-4b25-40ab-a3b8-1c4c6e286868
Filesystem magic number: 0xEF53
Filesystem revision #: 1 (dynamic)
Filesystem features: has_journal filetype needs_recovery sparse_super
Default mount options: (none)
Filesystem state: clean with errors
Errors behavior: Continue
Filesystem OS type: Linux
Inode count: 2621440
Block count: 5236992
Reserved block count: 261849
Free blocks: 4855697
Free inodes: 2621416
First block: 0
Block size: 2048
Fragment size: 2048
Blocks per group: 16384
Fragments per group: 16384
Inodes per group: 8192
Inode blocks per group: 512
Last mount time: Sat Nov 30 11:23:59 2002
Last write time: Sun Dec 1 14:09:55 2002
Mount count: 2
Maximum mount count: -1
Last checked: Fri Dec 1 19:18:16 2000
Check interval: 0 (<none>)
Reserved blocks uid: 0 (user root)
Reserved blocks gid: 0 (group root)
First inode: 11
Inode size: 128
Journal UUID: <none>
Journal inode: 8
Journal device: 0x0000
First orphan inode: 0
Trying 'e2fsck -y /dev/md11' after a reboot showed so many errors and
continued to run for minutes that I aborted e2fsck and do assume that
the file system was completely destroyed.
After recreation of the filesystem on /dev/md11 a rsync run completed
without errors.
As a side note: the system having the rsync sources has an identical
formatted partition (the systems are hardware twins) and doesn't show
any errors.
Some final information about the raid configuration of /dev/md11:
raiddev /dev/md11
raid-level 0
nr-raid-disks 4
nr-spare-disks 0
chunk-size 32
persistent-superblock 1
device /dev/sda13
raid-disk 0
device /dev/sdb13
raid-disk 1
device /dev/sdc15
raid-disk 2
device /dev/sdd15
raid-disk 3
--
Andreas Steinmetz
D.O.M. Datenverarbeitung GmbH