From mboxrd@z Thu Jan  1 00:00:00 1970
From: David Vrabel <david.vrabel@citrix.com>
Subject: Re: blkif discard attributes
Date: Thu, 3 Jul 2014 10:43:16 +0100
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To: Jan Beulich <JBeulich@suse.com>, Boris Ostrovsky <boris.ostrovsky@oracle.com>, Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
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On 03/07/14 08:59, Jan Beulich wrote:
> All (short of there being a specific blkfront/blkback maintainer),
> 
> it just occurred to me - shouldn't Linux'es max_discard_sectors and

The backend could split oversized discard requests into several smaller
ones.

> 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?

David