From: bugzilla-daemon@bugzilla.kernel.org
To: linux-scsi@vger.kernel.org
Subject: [Bug 16021] New: mptsas target reset under heavy duty
Date: Fri, 21 May 2010 09:41:16 GMT [thread overview]
Message-ID: <bug-16021-11613@https.bugzilla.kernel.org/> (raw)
https://bugzilla.kernel.org/show_bug.cgi?id=16021
Summary: mptsas target reset under heavy duty
Product: IO/Storage
Version: 2.5
Kernel Version: 2.6.32
Platform: All
OS/Version: Linux
Tree: Mainline
Status: NEW
Severity: normal
Priority: P1
Component: SCSI
AssignedTo: linux-scsi@vger.kernel.org
ReportedBy: dujun@perabytes.com
Regression: No
We have mptsas driver 4.22.00.00 from lsi official web site driving 1068e chip
which is connected to two lsi 12x expander chips. Each of the chips connects 8
sata disks. Under heavy duty, i.e., when we connect 16 hdd and build the linux
software raid5, there are lots of error reports in dmesg:
[20826.611906] mptscsih: ioc0: task abort: FAILED (sc=ffff88007b348c00)
[20826.611919] mptscsih: ioc0: attempting target reset! (sc=ffff88007dc78700)
[20826.611921] sd 4:0:16:0: [sdq] CDB: Read(10): 28 00 54 94 55 00 00 00 90 00
[20827.361823] mptscsih: ioc0: target reset: SUCCESS (sc=ffff88007dc78700)
[20837.361008] mptscsih: ioc0: attempting task abort! (sc=ffff88007dc78700)
[20837.361011] sd 4:0:16:0: [sdq] CDB: Test Unit Ready: 00 00 00 00 00 00
[20837.385655] mptbase: ioc0: LogInfo(0x31112000): Originator={PL},
Code={Reset}, SubCode(0x2000)
[20838.111238] mptbase: ioc0: LogInfo(0x31130000): Originator={PL}, Code={IO
Not Yet Executed}, SubCode(0x0000)
This would halt the io for about two minutes and then after successful target
reset, the io is continuing.
If we reduce the hdd to less than 12, or we set the scsi command depth of each
of the disks to 1, the build process could complete without any error.
We also tested the same scenario with lsi 36x expander chip without any
problem.
Is this a mptsas driver bug or just the 12x expander chip bug?
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next reply other threads:[~2010-05-21 9:41 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-05-21 9:41 bugzilla-daemon [this message]
2010-05-24 9:05 ` [Bug 16021] mptsas target reset under heavy duty bugzilla-daemon
2010-05-25 20:40 ` bugzilla-daemon
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