Re: [Xen-devel] blkif discard attributes

[David Vrabel <david.vrabel@xxxxxxxxxx>]

On 03/07/14 11:08, Jan Beulich wrote:
>>>> On 03.07.14 at 11:43, <david.vrabel@xxxxxxxxxx> wrote:
>> On 03/07/14 08:59, Jan Beulich wrote:
>>> discard_zeroes_data also be communicated from backend to frontend?
>>
>> Perhaps. But how would you handle a guest that used to have
>> discard_zeroes_data but is restored with different storage that no
>> longer has this property?
> 
> Don't these attributes gets re-evaluated after restore anyway?

I don't see how that helps.  What if a discard request was submitted
before the suspend, expecting the discard to zero and on restore the
requests is queued for the new backend which then might not zero.

David

_______________________________________________
Xen-devel mailing list
Xen-devel@xxxxxxxxxxxxx
http://lists.xen.org/xen-devel