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Re: [win-pv-devel] no-discard from xl not honored

Here is my suggestion.

Regards Andreas

On 13.02.2017 10:00, Paul Durrant wrote:
-----Original Message-----
From: win-pv-devel [mailto:win-pv-devel-bounces@xxxxxxxxxxxxxxxxxxxx] On
Behalf Of Andreas Kinzler
Sent: 10 February 2017 16:45
To: win-pv-devel@xxxxxxxxxxxxxxxxxxxx
Subject: [win-pv-devel] no-discard from xl not honored

A disk spec like

disk = [ '/dev/sda7,,hda,rw', '/dev/ram0,,hdb,rw,no-discard' ]

leads to the following xenstore (at least with Xen 4.5.1)

        discard-enable = "0"
        feature-discard = "1"

The driver only reads "feature-discard" but not "discard-enable" so
discard is not disabled.

Hmm. That's unfortunate, but fairly easily fixed. I'll see if I can come up 
with a patch later today.

Attachment: discard.patch
Description: Text document

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