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Re: [Qemu-devel] [PATCH 4/4] block: Cater to iscsi with non-power-of-2 d

From: Peter Lieven
Subject: Re: [Qemu-devel] [PATCH 4/4] block: Cater to iscsi with non-power-of-2 discard
Date: Tue, 8 Nov 2016 12:03:30 +0100
User-agent: Mozilla/5.0 (X11; Linux x86_64; rv:45.0) Gecko/20100101 Thunderbird/45.3.0

Am 25.10.2016 um 18:12 schrieb Eric Blake:
On 10/25/2016 09:36 AM, Paolo Bonzini wrote:

On 25/10/2016 16:35, Eric Blake wrote:
So your argument is that we should always pass down every unaligned
less-than-optimum discard request all the way to the hardware, rather
than dropping it higher in the stack, even though discard requests are
already advisory, in order to leave the hardware as the ultimate
decision on whether to ignore the unaligned request?
Yes, I agree with Peter as to this.
Okay, I'll work on patches. I think it counts as bug fix, so appropriate
even if I miss soft freeze (I'd still like to get NBD write zero support
into 2.8, since it already missed 2.7, but that one is still awaiting
review with not much time left).

Hi Eric,

have you had time to look at this?
If you need help, let me know.


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