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Re: [PATCH v4] qcow2: Forbid discard in qcow2 v2 images with backing fil
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From: |
Max Reitz |
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Subject: |
Re: [PATCH v4] qcow2: Forbid discard in qcow2 v2 images with backing files |
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Date: |
Tue, 31 Mar 2020 12:44:11 +0200 |
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User-agent: |
Mozilla/5.0 (X11; Linux x86_64; rv:68.0) Gecko/20100101 Thunderbird/68.6.0 |
On 31.03.20 11:51, Alberto Garcia wrote:
> On Tue 31 Mar 2020 10:57:18 AM CEST, Max Reitz wrote:
>> I’ll have to dequeue it again, because it breaks iotests 046 and 177
>> (both of which already have special handling for v2-specific discard;
>> but it needs to be adjusted now that the discard operation no longer
>> reveals the backing file contents).
>
> ??? None of those break for me, is that in your branch or in master?
Er, oops. Somehow I forgot to note that they break for v2 images, so
with -o compat=0.10:
$ ./check -T -qcow2 -o compat=0.10 46 177
Max
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