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DISCUSSION Ruairi Hickey 1 participant 1 message Jul 6, 2007 2 messages not in the archive libata

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A message that is not in the archive (sent off-list or not yet received): [email protected]

A message that is not in the archive (sent off-list or not yet received): [email protected]

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Quoted 35 lines · Tejun Heo

Hello,

Quoted 10 lines · Ruairi Hickey

Hi Tejun,
I've being testing a storage box from Norco (DS-1220) which comes
with 12 SATA drives and is connected to a Linux server via a PCI-e e-sata card based on the Sil3124. To get this to be recognised I used your latest patch libata-tj-2.6.22-rc6-20070702 and the vanilla 2.6.22-rc6 kernel. Under load testing I get exceptions in my logs, (see below). Can I be of any assistance to you to help debugging this... (I can program / read reasonably well in most languages)

Quoted 7 lines

Ruairi

Jul  5 14:20:09 samba01 kernel: ata2.03: cmd
60/08:00:47:c7:f5/00:00:2c:00:00/40 tag 0 cdb 0x0 data 4096 in
Jul  5 14:20:09 samba01 kernel:          res

40/00:00:00:00:00/00:00:00:00:00/00 Emask 0x4 (timeout)

Hmm... it's timeout on FPDMA_READ command. It could be a transient hardware problem or fluctuating power, what not. I need more info to diagnose the problem.

1. Please cc [email protected]

2. How reproducible is the problem?

3. If the problem is reproducible, is the problem confined a specific drive? If so, what happens if you move the drive to different slot (ie. exchange two drives)? Does the error follow the drive or stay with the slot?

Quoted 6 lines

4. Your drive probably has a dip switch which forces 1.5Gbps link speed. Does that help?

Thanks.

Hi Tejun,
Thanks for your pointers, I got sidetracked yesterday with other
work.... The problem is reproducible by doing a simple 'dd' to create a multiple GB file. The error occurs on different drives at the moment. I am on vacation for the next week but I will remove the linux Raid array and test the drives individually (hopefully today, but maybe when I get back from vacation) and report back to you then...

Ruairi