David Mathog wrote:
Joe Landman wrote:
[...]
Maybe it will mean more to you than it does to me...
% lsscsi --long
[8:0:0:0] tape HP Ultrium 3-SCSI D21D /dev/st0
state=running queue_depth=32 scsi_level=4 type=1 device_blocked=0
timeout=900
Hmmm... queue_depth of 32? On a tape? Weird. There has been some
strangeness in the TCQ/NCQ layers. Might want to try to set this to 1
and see if it helps
echo 1 > /sys/block/st0/device/queue_depth
(note: some drivers don't support changing the queue_depth)
lspci -v
04:04.0 SCSI storage controller: Adaptec ASC-29320ALP U320 (rev 10)
Subsystem: Adaptec ASC-29320LPE PCIe U320
Flags: bus master, 66MHz, slow devsel, latency 32, IRQ 19
I/O ports at 4400 [disabled] [size=256]
Memory at d8400000 (64-bit, non-prefetchable) [size=8K]
I/O ports at 4000 [disabled] [size=256]
[virtual] Expansion ROM at d8600000 [disabled] [size=512K]
Capabilities: [dc] Power Management version 2
Capabilities: [a0] Message Signalled Interrupts: Mask- 64bit+ Queue=0/1
Enable-
Capabilities: [94] PCI-X non-bridge device
Looks like a PCI-x adapter. This shouldn't be an issue though.
Try changing the block size. 2M to 8M, and see what happens.
--
Joseph Landman, Ph.D
Founder and CEO
Scalable Informatics LLC,
email: [EMAIL PROTECTED]
web : http://www.scalableinformatics.com
http://jackrabbit.scalableinformatics.com
phone: +1 734 786 8423
fax : +1 866 888 3112
cell : +1 734 612 4615
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