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Re: [Qemu-devel] [PATCH 1/2] block: Open backing image in force share mo
From: |
Kevin Wolf |
Subject: |
Re: [Qemu-devel] [PATCH 1/2] block: Open backing image in force share mode for size probe |
Date: |
Fri, 22 Dec 2017 13:49:30 +0100 |
User-agent: |
Mutt/1.9.1 (2017-09-22) |
Am 15.12.2017 um 09:04 hat Fam Zheng geschrieben:
> Management tools create overlays of running guests with qemu-img:
>
> $ qemu-img create -b /image/in/use.qcow2 -f qcow2 /overlay/image.qcow2
>
> but this doesn't work anymore due to image locking:
>
> qemu-img: /overlay/image.qcow2: Failed to get shared "write" lock
> Is another process using the image?
> Could not open backing image to determine size.
> Use the force share option to allow this use case again.
>
> Cc: address@hidden
> Signed-off-by: Fam Zheng <address@hidden>
Thanks, applied this patch to the block branch. Please resend a fixed
version of the test case.
Kevin