g_vfs_done disk error

[GuTi]

Hello,

I have a rig which is QuadCore Xeon, 4GB ram, 4 500GB
Disks (ad4, ad6, ad10, ad12), was running FreeBSD 6.2
Release i386/PAE(Generic+SMP+PAE kernel p8), and is
currently running FreeBSD 6.2 Release AMD64
(Generic+SMP kernel p8). I am getting the g_vfs_done
error as below on all my 4 disks when I am logging
network traffic to these disks. 

Sometimes, I would get "disk: detached" and this would
cause the system to reboot. After running FSCK, it's
all fine again, but the error came back after one or
two days of traffic logging. This happens to all 4 new
500GB disks (WD).

I just would like to confirm that this is the disks
problem instead of any bugs, any suggestions? Do let
me know if you guys want more information.


Oct 26 02:08:32 disk1 kernel:
g_vfs_done():ad12[WRITE(offset=137438920704,
length=131072)]error = 5
Oct 26 02:08:53 disk1 kernel: ad12: TIMEOUT -
WRITE_DMA retrying (1 retry left) LBA=268435392
Oct 26 02:09:03 disk1 kernel: ad12: TIMEOUT -
WRITE_DMA retrying (0 retries left) LBA=268435392
Oct 26 02:09:03 disk1 kernel: ad12: FAILURE -
WRITE_DMA timed out LBA=268435392

--------------------

Oct 26 11:10:24 disk1 kernel:
g_vfs_done():ad4[WRITE(offset=137438920704,
length=131072)]error = 5
Oct 26 11:10:45 disk1 kernel: ad4: TIMEOUT - WRITE_DMA
retrying (1 retry left) LBA=268435392
Oct 26 11:10:50 disk1 kernel: ad4: TIMEOUT - WRITE_DMA
retrying (0 retries left) LBA=268435392
Oct 26 11:10:55 disk1 kernel: ad4: FAILURE - WRITE_DMA
timed out LBA=268435392

--------------------

Oct 26 11:11:04 disk1 kernel: subdisk12: detached
Oct 26 11:11:04 disk1 kernel: ad12: detached
Oct 26 11:11:04 disk1 kernel:
g_vfs_done():ad12[WRITE(offset=137438920704,
length=131072)]error = 6
Oct 26 11:11:04 disk1 kernel:
g_vfs_done():ad12[WRITE(offset=137439051776,
length=131072)]error = 6
Oct 26 11:11:04 disk1 kernel:
g_vfs_done():ad12[WRITE(offset=137439182848,
length=131072)]error = 6

--------------------

systat -vm
----------
Disk KB/t = 128
tps = 52
MB/s = 5.9
%busy = 11

--------------------

Thanks.

Regards,
GuTi


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