From: Jens Axboe <axboe@kernel.dk>
To: Meelis Roos <mroos@linux.ee>,
linux-scsi@vger.kernel.org, Christoph Hellwig <hch@infradead.org>
Subject: Re: blk-mq problem on proliant DL380 G3 (cciss)
Date: Wed, 29 Oct 2014 09:08:46 -0600 [thread overview]
Message-ID: <545102FE.3010003@kernel.dk> (raw)
In-Reply-To: <alpine.LRH.2.11.1410291344220.12885@adalberg.ut.ee>
On 2014-10-29 05:46, Meelis Roos wrote:
>> I tried 3.18-rc2 with blk-mq default on on HP ProLiant DL380 G3 (with HP
>> CCISS RAID controller). It fails late in the bootup with "task
>> scsi_eh_1:720 blocked for more than 120 seconds." messages.
>>
>> Booting with scsi_mod.use_blk_mq=0 fixes the problem.
>
> Another test server with MPT SCSI RAID has similar problem,
> scsi_mode.use_blk_mq=0 cures it but I can not get good trace (no serail
> console). 3.18.0-rc2-00043-gf7e87a4 was tested there.
The first issue looks like scsi cdrom and error handling, it must be
leaking requests hence we hang on allocation of a new one. cciss doesn't
use blk_mq regardless of the scsi setting. Does the mpt box also have a
libata driven cdrom?
--
Jens Axboe
next prev parent reply other threads:[~2014-10-29 15:08 UTC|newest]
Thread overview: 16+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-10-29 10:47 blk-mq problem on proliant DL380 G3 (cciss) Meelis Roos
2014-10-29 11:46 ` Meelis Roos
2014-10-29 15:08 ` Jens Axboe [this message]
2014-10-29 15:38 ` Meelis Roos
2014-10-29 22:50 ` Elliott, Robert (Server Storage)
2014-10-29 18:38 ` Christoph Hellwig
2014-10-29 20:06 ` Meelis Roos
2014-10-29 20:13 ` Jens Axboe
2014-10-30 5:46 ` Meelis Roos
2014-10-30 11:18 ` Meelis Roos
2014-10-30 15:19 ` Christoph Hellwig
2014-10-30 17:32 ` Meelis Roos
2014-10-30 17:45 ` Christoph Hellwig
2014-11-03 1:23 ` Jens Axboe
2014-11-03 10:08 ` Christoph Hellwig
2014-11-03 13:05 ` Meelis Roos
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