Thanks,
applied to scsi-for-3.19.
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The commit 7985090aa0201(sd: Disable discard_zeroes_data for UNMAP)
introduces regresion for QEMU SCSI.
QEMU SCSI device claims to support UNMAP, WRITE SAME and WRITE SAME
16 in LBP VPD page, but only provides Maximum unmap LBA count
in block limits VPD page, and Maximum write same length isn't
On Fri, Dec 5, 2014 at 8:56 PM, Martin K. Petersen
martin.peter...@oracle.com wrote:
Ming == Ming Lei ming@canonical.com writes:
Ming,
Ming QEMU SCSI device claims to support UNMAP, WRITE SAME and WRITE
Ming SAME 16 in LBP VPD page, but only provides Maximum unmap LBA
Ming count in
Ming == Ming Lei ming@canonical.com writes:
There is absolutely no correlation between max write same blocks and
max unmap blocks. They are two entirely different commands. If QEMU
SCSI
Ming Do you have any better idea for the problem?
Does QEMU SCSI set LBPRZ?
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Martin K. Petersen
On Fri, Dec 5, 2014 at 9:22 PM, Martin K. Petersen
martin.peter...@oracle.com wrote:
Ming == Ming Lei ming@canonical.com writes:
There is absolutely no correlation between max write same blocks and
max unmap blocks. They are two entirely different commands. If QEMU
SCSI
Ming Do you have
Ming == Ming Lei ming@canonical.com writes:
Ming It isn't set in LBP VPG page.
What about in READ CAPACITY(16)?
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On Fri, Dec 5, 2014 at 9:38 PM, Martin K. Petersen
martin.peter...@oracle.com wrote:
Ming == Ming Lei ming@canonical.com writes:
Ming It isn't set in LBP VPG page.
What about in READ CAPACITY(16)?
It isn't set too.
Thanks,
Ming Lei
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Ming == Ming Lei ming@canonical.com writes:
What about in READ CAPACITY(16)?
Ming It isn't set too.
Please try the following patch:
[SCSI] sd: Tweak discard heuristics to work around QEMU SCSI issue
7985090aa020 changed the discard heuristics to give preference to the
WRITE SAME
On Fri, Dec 5, 2014 at 9:58 PM, Martin K. Petersen
martin.peter...@oracle.com wrote:
Ming == Ming Lei ming@canonical.com writes:
What about in READ CAPACITY(16)?
Ming It isn't set too.
Please try the following patch:
[SCSI] sd: Tweak discard heuristics to work around QEMU SCSI issue
On 05/12/2014 14:58, Martin K. Petersen wrote:
Ming == Ming Lei ming@canonical.com writes:
What about in READ CAPACITY(16)?
Ming It isn't set too.
Please try the following patch:
[SCSI] sd: Tweak discard heuristics to work around QEMU SCSI issue
7985090aa020 changed the
On 05/12/2014 14:05, Ming Lei wrote:
[ 50.112885] sd 0:0:1:0: [sda] FAILED Result: hostbyte=DID_OK
driverbyte=DRIVER_SENSE
[ 50.113859] sd 0:0:1:0: [sda] Sense Key : Illegal Request [current]
[ 50.113859] sd 0:0:1:0: [sda] Add. Sense: Invalid field in cdb
[ 50.113859] sd 0:0:1:0:
On Fri, Dec 5, 2014 at 11:49 PM, Paolo Bonzini pbonz...@redhat.com wrote:
On 05/12/2014 14:05, Ming Lei wrote:
[ 50.112885] sd 0:0:1:0: [sda] FAILED Result: hostbyte=DID_OK
driverbyte=DRIVER_SENSE
[ 50.113859] sd 0:0:1:0: [sda] Sense Key : Illegal Request [current]
[ 50.113859] sd
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