From: "Martin K. Petersen" <martin.petersen@oracle.com>
To: KY Srinivasan <kys@microsoft.com>
Cc: "Martin K. Petersen" <martin.petersen@oracle.com>,
Sitsofe Wheeler <sitsofe@gmail.com>,
Christoph Hellwig <hch@infradead.org>,
"gregkh\@linuxfoundation.org" <gregkh@linuxfoundation.org>,
"linux-kernel\@vger.kernel.org" <linux-kernel@vger.kernel.org>,
"devel\@linuxdriverproject.org" <devel@linuxdriverproject.org>,
"ohering\@suse.com" <ohering@suse.com>,
"apw\@canonical.com" <apw@canonical.com>,
"jasowang\@redhat.com" <jasowang@redhat.com>,
"jbottomley\@parallels.com" <jbottomley@parallels.com>,
"linux-scsi\@vger.kernel.org" <linux-scsi@vger.kernel.org>
Subject: Re: [PATCH v2 3/3] [SCSI] Make LBP quirk skip lbpme checks tests
Date: Fri, 25 Jul 2014 12:57:02 -0400 [thread overview]
Message-ID: <yq1wqb1gyw1.fsf@sermon.lab.mkp.net> (raw)
In-Reply-To: <16fea5bb87ba47019527cee788e07a72@BY2PR0301MB0711.namprd03.prod.outlook.com> (KY Srinivasan's message of "Fri, 25 Jul 2014 16:47:35 +0000")
>>>>> "KY" == KY Srinivasan <kys@microsoft.com> writes:
KY> For the pass through case, the host validates the request and passes
KY> the request to the device. However, not all scsi commands are
KY> passed through even though the device it is being passed through may
KY> support the command. WRITE_SAME is one such command. Consequently,
KY> in the EVPD page, we will set state indicating that WRITE_SAME is
KY> not supported (even if the device supports it).
The LBP VPD page flags UNMAP as being supported. Do you actually support
UNMAP to DSM TRIM SCSI-ATA translation?
One challenge in that department is that a single UNMAP command may turn
into many, many, many DSM TRIM commands on the underlying SATA device.
That's why we went with WRITE SAME for the internal Linux SATL, capping
the maximum number of blocks to what we can fit in a single DSM TRIM
command.
--
Martin K. Petersen Oracle Linux Engineering
next prev parent reply other threads:[~2014-07-25 16:57 UTC|newest]
Thread overview: 43+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-07-21 23:06 [PATCH 1/1] Drivers: scsi: storvsc: Add blist flags K. Y. Srinivasan
2014-07-23 10:04 ` Sitsofe Wheeler
2014-07-23 11:51 ` Christoph Hellwig
2014-07-23 12:54 ` Sitsofe Wheeler
2014-07-23 14:10 ` Christoph Hellwig
2014-07-23 15:31 ` Sitsofe Wheeler
2014-07-23 15:40 ` KY Srinivasan
2014-07-23 15:39 ` KY Srinivasan
2014-07-23 14:10 ` Sitsofe Wheeler
2014-07-23 14:15 ` Christoph Hellwig
2014-07-23 20:13 ` Sitsofe Wheeler
2014-07-24 7:47 ` [PATCH 0/3] Enable discard on Hyper-V Sitsofe Wheeler
2014-07-24 7:52 ` [PATCH 1/3] [SCSI] Add quirk for forcing logical block provisioning tests Sitsofe Wheeler
2014-07-24 7:56 ` [PATCH 2/3] [SCSI] storvsc: Add Hyper-V " Sitsofe Wheeler
2014-07-24 14:09 ` James Bottomley
2014-07-24 18:03 ` Sitsofe Wheeler
2014-07-24 7:58 ` [PATCH 3/3] [SCSI] Make LBP quirk skip lbpme checks tests Sitsofe Wheeler
2014-07-24 12:22 ` [PATCH v2 " Sitsofe Wheeler
2014-07-24 13:54 ` Martin K. Petersen
2014-07-24 15:34 ` Christoph Hellwig
2014-07-24 15:35 ` Christoph Hellwig
2014-07-24 16:24 ` Sitsofe Wheeler
2014-07-24 15:36 ` Sitsofe Wheeler
2014-07-24 15:54 ` Martin K. Petersen
2014-07-25 16:47 ` KY Srinivasan
2014-07-25 16:57 ` Martin K. Petersen [this message]
2014-07-26 13:44 ` KY Srinivasan
2014-07-26 16:54 ` Martin K. Petersen
2014-07-26 17:17 ` KY Srinivasan
2014-07-26 19:25 ` Martin K. Petersen
2014-07-27 2:09 ` KY Srinivasan
2014-07-28 18:50 ` KY Srinivasan
2014-07-28 19:02 ` Martin K. Petersen
2014-07-28 19:05 ` KY Srinivasan
2014-07-28 20:02 ` James Bottomley
2014-07-28 20:05 ` KY Srinivasan
2014-07-29 17:41 ` KY Srinivasan
2014-07-29 19:30 ` Martin K. Petersen
2014-07-25 17:10 ` James Bottomley
2014-07-26 13:42 ` KY Srinivasan
2014-07-24 12:37 ` [PATCH 0/3] Enable discard on Hyper-V Sitsofe Wheeler
2014-07-24 5:40 ` [PATCH 1/1] Drivers: scsi: storvsc: Add blist flags Hannes Reinecke
2014-08-01 19:48 ` Sitsofe Wheeler
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