> -----Original Message----- > From: Sitsofe Wheeler [mailto:sitsofe@xxxxxxxxx] > Sent: Wednesday, July 23, 2014 3:05 AM > To: KY Srinivasan > Cc: gregkh@xxxxxxxxxxxxxxxxxxx; linux-kernel@xxxxxxxxxxxxxxx; > devel@xxxxxxxxxxxxxxxxxxxxxx; ohering@xxxxxxxx; apw@xxxxxxxxxxxxx; > jasowang@xxxxxxxxxx; jbottomley@xxxxxxxxxxxxx; hch@xxxxxxxxxxxxx; > linux-scsi@xxxxxxxxxxxxxxx > Subject: Re: [PATCH 1/1] Drivers: scsi: storvsc: Add blist flags > > On Mon, Jul 21, 2014 at 04:06:01PM -0700, K. Y. Srinivasan wrote: > > Add blist flags to permit the reading of the VPD pages even when the > > target may claim SPC-2 compliance. MSFT targets currently claim SPC-2 > > compliance while they implement post SPC-2 features. > > With this patch we can correctly handle WRITE_SAME_16 issues. > > OK I've just seen this as I was about to post a similar patch to get discard > going on Hyper-V. Will your patches handle Hyper-V pass through devices > that support discard? The SSD I have here reports the following in the Linux It should. Hyper-V does support pass through devices. K. Y > VM: > > # sg_vpd -p lbpv /dev/sdc > Logical block provisioning VPD page (SBC): > Unmap command supported (LBPU): 1 > Write same (16) with unmap bit supported (LBWS): 0 > Write same (10) with unmap bit supported (LBWS10): 0 > Logical block provisioning read zeros (LBPRZ): 0 > Anchored LBAs supported (ANC_SUP): 1 > Threshold exponent: 0 > Descriptor present (DP): 0 > Provisioning type: 0 > > # sg_readcap -l /dev/sdc > Read Capacity results: > Protection: prot_en=0, p_type=0, p_i_exponent=0 > Logical block provisioning: lbpme=0, lbprz=0 > Last logical block address=234441647 (0xdf94baf), Number of logical > blocks=234441648 > Logical block length=512 bytes > Logical blocks per physical block exponent=0 > Lowest aligned logical block address=0 > Hence: > Device size: 120034123776 bytes, 114473.5 MiB, 120.03 GB > > -- > Sitsofe | http://sucs.org/~sits/ _______________________________________________ devel mailing list devel@xxxxxxxxxxxxxxxxxxxxxx http://driverdev.linuxdriverproject.org/mailman/listinfo/driverdev-devel
