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From: martin.petersen@oracle.com (Martin K. Petersen)
Subject: [PATCH] NVMe: Skip namespaces with interleaved meta-data
Date: Wed, 28 Jan 2015 17:28:41 -0500	[thread overview]
Message-ID: <yq1egqeilpi.fsf@sermon.lab.mkp.net> (raw)
In-Reply-To: <alpine.LNX.2.00.1501282210070.15481@localhost.lm.intel.com> (Keith Busch's message of "Wed, 28 Jan 2015 22:17:21 +0000 (UTC)")

>>>>> "Keith" == Keith Busch <keith.busch at intel.com> writes:

>> I think the best way to go about dealing with all this is to set
>> PRACT=1 if no bip is attached to a bio bound for a name space
>> formatted with PI.

Keith> That's an option for a subset of formats I eluded to before. It
Keith> will have the controller generate/strip if the metadata size 8
Keith> bytes with DPS settings, but ignored otherwise. We still need a
Keith> buffer if metadata is not used for PI, or if the metadata size
Keith> more than 8 bytes.

I agree it's a deficiency in the NVMe spec that there are no explicit
handling flags for non-PI metadata in split mode.

-- 
Martin K. Petersen	Oracle Linux Engineering

  reply	other threads:[~2015-01-28 22:28 UTC|newest]

Thread overview: 18+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2015-01-27 18:07 [PATCH] NVMe: Skip namespaces with interleaved meta-data Keith Busch
2015-01-27 21:57 ` David Darrington
2015-01-27 22:09   ` Keith Busch
2015-01-28  1:21     ` Keith Busch
2015-01-28  1:39       ` Martin K. Petersen
2015-01-28 15:11         ` Keith Busch
2015-01-28 20:50           ` Paul Grabinar
2015-01-28 21:16             ` Keith Busch
2015-01-28 21:46               ` Paul Grabinar
2015-01-28 22:08                 ` Martin K. Petersen
2015-01-28 22:17                   ` Keith Busch
2015-01-28 22:28                     ` Martin K. Petersen [this message]
2015-01-29  0:09                       ` Keith Busch
2015-01-29  0:57                         ` Martin K. Petersen
2015-01-29 15:44                           ` Keith Busch
2015-01-30  0:41                             ` Martin K. Petersen
2015-01-30  0:57                               ` Keith Busch
2015-01-28 22:17           ` Andrey Kuzmin

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