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xen-devel
[Xen-devel] RE: [PATCH 0 of 1] Patch to alter BLKIF_OP_TRIM to BLKIF_OP_
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To: |
Konrad Rzeszutek Wilk <konrad.wilk@xxxxxxxxxx>, "xen-devel@xxxxxxxxxxxxxxxxxxx" <xen-devel@xxxxxxxxxxxxxxxxxxx>, Ian Jackson <Ian.Jackson@xxxxxxxxxxxxx>, Stefano Stabellini <Stefano.Stabellini@xxxxxxxxxxxxx>, Ian Campbell <Ian.Campbell@xxxxxxxxxxxxx>, "lidongyang@xxxxxxxxxx" <lidongyang@xxxxxxxxxx>, Owen Smith <owen.smith@xxxxxxxxxx>, "pasik@xxxxxx" <pasik@xxxxxx>, "JBeulich@xxxxxxxxxx" <JBeulich@xxxxxxxxxx> |
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Subject: |
[Xen-devel] RE: [PATCH 0 of 1] Patch to alter BLKIF_OP_TRIM to BLKIF_OP_DISCARD (v1). |
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From: |
Paul Durrant <Paul.Durrant@xxxxxxxxxx> |
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Date: |
Wed, 31 Aug 2011 09:57:09 +0100 |
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Wed, 31 Aug 2011 01:57:57 -0700 |
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AcxnkKMwpmaqCyPeQmqLyCguHvKDIwAKwsrA |
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Thread-topic: |
[PATCH 0 of 1] Patch to alter BLKIF_OP_TRIM to BLKIF_OP_DISCARD (v1). |
The windows frontends in current XenServer product don't have the trim code
enabled since the backends don't really do anything useful with it yet so I
have no objection to a name change if it really matters that much.
Paul
> -----Original Message-----
> From: Konrad Rzeszutek Wilk [mailto:konrad.wilk@xxxxxxxxxx]
> Sent: 31 August 2011 04:41
> To: xen-devel@xxxxxxxxxxxxxxxxxxx; Ian Jackson; Stefano Stabellini;
> Ian Campbell; lidongyang@xxxxxxxxxx; Owen Smith; Paul Durrant;
> pasik@xxxxxx; JBeulich@xxxxxxxxxx
> Cc: konrad.wilk@xxxxxxxxxx
> Subject: [PATCH 0 of 1] Patch to alter BLKIF_OP_TRIM to
> BLKIF_OP_DISCARD (v1).
>
> Hey guys,
>
> Pasi mentioned on Li's (and Owen's) patches which provide TRIM/UNMAP
> support to the Linux backend/frontend that:
> "
> Isn't the generic name for this functionality "discard" in Linux?
>
> and "trim" being the ATA specific discard-implementation,
> and "scsi unmap" the SAS/SCSI specific discard-implementation?
>
> Just wondering..
> "
>
> and it sounds right to me. The problem is of course that the
> 'feature-trim'
> is already in the interface - but I was wondering how much it is set
> in stone? Could it be feasible to modify the backend/frontend in
> Citrix product to use 'feature-discard' instead? And naturally also
> the Novell drivers.
>
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