From: "hch@infradead.org" <hch@infradead.org>
To: "Handzik, Joe" <joseph.t.handzik@hp.com>
Cc: "hch@infradead.org" <hch@infradead.org>,
"linux-scsi@vger.kernel.org" <linux-scsi@vger.kernel.org>,
"scameron@beardog.cce.hp.com" <scameron@beardog.cce.hp.com>,
"Scales, Webb" <webb.scales@hp.com>,
"Teel, Scott Stacy" <scott.stacy.teel@hp.com>
Subject: Re: Bad tag value in scsi-mq.4
Date: Tue, 19 Aug 2014 11:04:47 -0700 [thread overview]
Message-ID: <20140819180447.GA16742@infradead.org> (raw)
In-Reply-To: <2C438B34CAC8264398F5C7AF7411910A62ADCDC8@G9W0731.americas.hpqcorp.net>
On Tue, Aug 05, 2014 at 07:47:12PM +0000, Handzik, Joe wrote:
> Yeah, we thought about that one. We call scsi_activate_tcq if our scsi_device has tagged_supported set within hpsa_change_queue_type (our .change_queue_type entry into the scsi_host_template). Also made sure I was booting with the "scsi_mod.use_blk_mq=Y" option, which makes no difference either way.
Can you add some tracing to catch this? On the non-mq path requests
start out with ->tag set to -1 and blk_queue_start_tag, which is called
from scsi_request_fn sets it up. Adding printks in that area should
help you to find the culprit.
next prev parent reply other threads:[~2014-08-19 18:04 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <2C438B34CAC8264398F5C7AF7411910A62ADCC73@G9W0731.americas.hpqcorp.net>
2014-08-05 19:28 ` Bad tag value in scsi-mq.4 hch
2014-08-05 19:47 ` Handzik, Joe
2014-08-19 18:04 ` hch [this message]
2014-08-19 18:09 ` Handzik, Joe
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