linux-kernel - Re: [PROBLEM] reproduceable storage errors on high IO load

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Message-Id: <20110701151313.2afd48e0.taeuber@bbaw.de>
Date:	Fri, 1 Jul 2011 15:13:13 +0200
From:	Lars Täuber <taeuber@...w.de>
To:	linux-kernel@...r.kernel.org
Subject: Re: [PROBLEM] reproduceable storage errors on high IO load

Hi.

And now I retried with 2.6.39.2. Same result. Complete dmesg available.

I tried to create a RAID with fewer drives and with more drives but still the
same problem.

Then I tried to use RAID5 without any luck.

Then I tried to format a single disk.
# mke2fs -jF /dev/sdc

And: The problem still occurs!!!!
I could send the complete dmesg if needed.

Then I tried with »nosmp« kernel option. And bad luck again.
I could send the complete dmesg if needed.

[  760.138201] ata7.00: failed command: WRITE FPDMA QUEUED
[  760.138305] ata7.00: cmd 61/00:00:10:02:70/02:00:28:00:00/40 tag 30 ncq
262144 out [  760.138308]          res 01/04:00:10:0c:7c/00:02:28:00:00/40
Emask 0x3 (HSM violation) [  760.138563] ata7.00: status: { ERR }
[  760.138652] ata7.00: error: { ABRT }
[  760.138745] ata7: hard resetting link
[  770.160095] sas: smp task timed out or aborted
[  770.160105] drivers/scsi/mvsas/mv_sas.c 1718:mvs_abort_task:rc= 5
[  770.160110] sas: SMP task aborted and not done
[  772.170093] drivers/scsi/mvsas/mv_sas.c 1586:mvs_I_T_nexus_reset for device
[1]:rc= -70 [  772.170108] sas: sas_ata_hard_reset: Unable to reset I T nexus?
[  772.170112] sas: sas_ata_hard_reset: Found ATA device.
[  772.170119] ata7: follow-up softreset required but no softreset available
[  772.170252] ata7: hard resetting link

This is so simple it can't be I'm the only one with this problem!?

Regards
Lars
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