From: Mike Snitzer <snitzer@redhat.com>
To: Malahal Naineni <malahal@us.ibm.com>
Cc: linux-scsi@vger.kernel.org, jaxboe@fusionio.com, dm-devel@redhat.com
Subject: Re: block: QUEUE_FLAG_CLUSTER and no_cluster are NOT in sync
Date: Tue, 2 Nov 2010 16:21:59 -0400 [thread overview]
Message-ID: <20101102202159.GC23680@redhat.com> (raw)
In-Reply-To: <20100829203149.GC24466@us.ibm.com>
Malahal,
This patch should go through the scsi tree. Please update the patch (so
it includes the patch header) and repost to linux-scsi.
Thanks,
Mike
On Sun, Aug 29 2010 at 4:31pm -0400,
Malahal Naineni <malahal@us.ibm.com> wrote:
> Here is the missing header:
>
> no_cluster is used by device mapper (may be others) resulting in
> multipath devices setting QUEUE_FLAG_CLUSTER flag even though the
> underlying devices (e.g. open iscsi virtual adapter) don't support it.
>
> Signed-off-by: Malahal Naineni (malahal@us.ibm.com)
>
> Malahal Naineni [malahal@us.ibm.com] wrote:
> > diff -r 8305d08f6ecf -r 5e7598cf7714 drivers/scsi/scsi_lib.c
> > --- a/drivers/scsi/scsi_lib.c Wed Aug 25 13:44:33 2010 -0700
> > +++ b/drivers/scsi/scsi_lib.c Wed Aug 25 13:44:33 2010 -0700
> > @@ -1633,8 +1633,10 @@ struct request_queue *__scsi_alloc_queue
> > blk_queue_max_segment_size(q, dma_get_max_seg_size(dev));
> >
> > /* New queue, no concurrency on queue_flags */
> > - if (!shost->use_clustering)
> > + if (!shost->use_clustering) {
> > queue_flag_clear_unlocked(QUEUE_FLAG_CLUSTER, q);
> > + q->limits.no_cluster = 1;
> > + }
> >
> > /*
> > * set a reasonable default alignment on word boundaries: the
> >
> > --
> > dm-devel mailing list
> > dm-devel@redhat.com
> > https://www.redhat.com/mailman/listinfo/dm-devel
>
> --
> dm-devel mailing list
> dm-devel@redhat.com
> https://www.redhat.com/mailman/listinfo/dm-devel
prev parent reply other threads:[~2010-11-02 20:21 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-08-29 17:59 [PATCH] imported patch sync-no_cluster-with-cluster-flag.patch Malahal Naineni
2010-08-29 20:31 ` [PATCH] block: QUEUE_FLAG_CLUSTER and no_cluster are NOT in sync Malahal Naineni
2010-11-02 20:21 ` Mike Snitzer [this message]
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