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Re: [Qemu-devel] [PATCH 1/2] qapi: Add "detect-zeroes" option to drive-m
From: |
Alexandre DERUMIER |
Subject: |
Re: [Qemu-devel] [PATCH 1/2] qapi: Add "detect-zeroes" option to drive-mirror |
Date: |
Wed, 10 Jun 2015 18:04:02 +0200 (CEST) |
>>Sorry, forgot to mention - of course I`ve pulled all previous
>>zeroing-related queue, so I haven`t had only the QMP-related fix
>>running on top of the master :)
Hi, I had a discussion about rbd mirroring, detect-zeroes and sparse target,
some months ago with paolo
http://qemu.11.n7.nabble.com/qemu-drive-mirror-to-rbd-storage-no-sparse-rbd-image-td293642.html
Not sure it's related but
"Lack of bdrv_co_write_zeroes is why detect-zeroes does not work.
Lack of bdrv_get_block_status is why sparse->sparse does not work
without detect-zeroes.
Paolo
"
----- Mail original -----
De: "Andrey Korolyov" <address@hidden>
À: "Fam Zheng" <address@hidden>
Cc: "Kevin Wolf" <address@hidden>, "qemu block" <address@hidden>, "Jeff Cody"
<address@hidden>, "qemu-devel" <address@hidden>, "Markus Armbruster"
<address@hidden>, "stefanha" <address@hidden>, "pbonzini" <address@hidden>
Envoyé: Mercredi 10 Juin 2015 17:48:54
Objet: Re: [Qemu-devel] [PATCH 1/2] qapi: Add "detect-zeroes" option to
drive-mirror
> '{"execute":"drive-mirror", "arguments": { "device":
> "drive-virtio-disk0", "target":
> "rbd:dev-rack2/vm33090-dest:id=qemukvm:key=xxx:auth_supported=cephx\\;none:mon_host=10.6.0.1\\:6789\\;10.6.0.3\\:6789\\;10.6.0.4\\:6789",
>
> "mode": "existing", "sync": "full", "detect-zeroes": true, "format":
> "raw" } }'
Sorry, forgot to mention - of course I`ve pulled all previous
zeroing-related queue, so I haven`t had only the QMP-related fix
running on top of the master :)
[Qemu-devel] [PATCH 2/2] iotests: Add test cases for drive-mirror "detect-zeroes" option, Fam Zheng, 2015/06/08