From: Mike Snitzer <snitzer@redhat.com>
To: Bart Van Assche <bart.vanassche@sandisk.com>
Cc: Keith Busch <keith.busch@intel.com>, Jens Axboe <axboe@kernel.dk>,
Christoph Hellwig <hch@infradead.org>,
device-mapper development <dm-devel@redhat.com>,
Jun'ichi Nomura <j-nomura@ce.jp.nec.com>,
linux-scsi@vger.kernel.org
Subject: Re: dm + blk-mq soft lockup complaint
Date: Thu, 15 Jan 2015 10:43:43 -0500 [thread overview]
Message-ID: <20150115154343.GA11859@redhat.com> (raw)
In-Reply-To: <54B7764C.9000402@sandisk.com>
On Thu, Jan 15 2015 at 3:11am -0500,
Bart Van Assche <bart.vanassche@sandisk.com> wrote:
> On 01/14/15 20:00, Mike Snitzer wrote:
> > IB aside, I haven't been following along close enough on scsi-mq
> > developments, but does a regular iscsi initiator have support for
> > scsi-mq? I'd like to validate scsi-mq devices with the dm-mpath
> > changes.
>
> Hello Mike,
>
> scsi-mq support for the iSCSI initiator is being considered but has not
> yet been implemented. For more information, see also Sagi Grimberg,
> [LSF/MM TOPIC] iSCSI MQ adoption via MCS discussion, linux-scsi mailing
> list, January 7, 2015 (http://thread.gmane.org/gmane.linux.scsi/98199).
OK, thanks.
FYI, I just used your fio test against an mpath device that is using 4
virtio-scsi devices with blk-mq enabled and all worked fine.
How easily could you reproduce your SRP hang? Did it happen every run
or did it take multiple runs to see it?
next prev parent reply other threads:[~2015-01-15 15:44 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <54B3FFAE.4070609@kernel.dk>
[not found] ` <alpine.LNX.2.00.1501121738000.4026@localhost.lm.intel.com>
[not found] ` <54B40E8A.6010005@kernel.dk>
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[not found] ` <20150112191138.GC21518@redhat.com>
[not found] ` <20150112202113.GA23234@redhat.com>
[not found] ` <54B50F9D.2040000@sandisk.com>
[not found] ` <20150113141746.GA30411@redhat.com>
[not found] ` <54B52B73.7040807@sandisk.com>
2015-01-13 16:20 ` dm + blk-mq soft lockup complaint Mike Snitzer
2015-01-14 9:16 ` Bart Van Assche
2015-01-14 18:59 ` Mike Snitzer
2015-01-15 8:11 ` Bart Van Assche
2015-01-15 15:43 ` Mike Snitzer [this message]
2015-01-15 15:55 ` Bart Van Assche
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