From: Bart.VanAssche@wdc.com (Bart Van Assche)
Subject: data corruption with 'splt' workload to XFS on DM cache with its 3 underlying devices being on same NVMe device
Date: Tue, 24 Jul 2018 14:25:41 +0000 [thread overview]
Message-ID: <bc63227473a19cb23d6b2bb38eefa564dfec1ffc.camel@wdc.com> (raw)
In-Reply-To: <e761830f-e3f7-3e88-1697-b4b150e84e5f@suse.de>
On Tue, 2018-07-24@08:00 +0200, Hannes Reinecke wrote:
> So, have you tested that request-based multipathing works on a partition
> _at all_? I'm not sure if partition mapping is done correctly here; we
> never remap the start of the request (nor bio, come to speak of it), so
> it looks as if we would be doing the wrong things here.
>
> Have you checked that partition remapping is done correctly?
I think generic_make_request() takes care of partition remapping by calling
blk_partition_remap(). generic_make_request() is called by submit_bio(). Is
that sufficient to cover all dm drivers?
Bart.
next prev parent reply other threads:[~2018-07-24 14:25 UTC|newest]
Thread overview: 11+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-07-23 16:33 data corruption with 'splt' workload to XFS on DM cache with its 3 underlying devices being on same NVMe device Mike Snitzer
2018-07-24 6:00 ` Hannes Reinecke
2018-07-24 13:07 ` Mike Snitzer
2018-07-24 13:22 ` Laurence Oberman
2018-07-24 13:51 ` Hannes Reinecke
2018-07-24 13:57 ` Laurence Oberman
2018-07-24 15:18 ` Mike Snitzer
2018-07-24 15:31 ` Laurence Oberman
2018-07-24 17:42 ` Christoph Hellwig
2018-07-24 14:25 ` Bart Van Assche [this message]
2018-07-24 15:07 ` Mike Snitzer
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