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Re: [Qemu-devel] [PATCH] backup: Fail early if cannot determine cluster

From: Eric Blake
Subject: Re: [Qemu-devel] [PATCH] backup: Fail early if cannot determine cluster size
Date: Wed, 18 May 2016 08:25:56 -0600
User-agent: Mozilla/5.0 (X11; Linux x86_64; rv:38.0) Gecko/20100101 Thunderbird/38.3.0

On 05/17/2016 11:53 PM, Fam Zheng wrote:
> Otherwise the job is orphaned and block_job_cancel_sync in
> bdrv_close_all() when quiting will hang.


> A simple reproducer is running blockdev-backup from null-co:// to
> null-co://.

Worth a qemu-iotests addition?

> Cc: address@hidden
> Signed-off-by: Fam Zheng <address@hidden>
> ---
>  block/backup.c | 34 ++++++++++++++++++----------------
>  1 file changed, 18 insertions(+), 16 deletions(-)

Eric Blake   eblake redhat com    +1-919-301-3266
Libvirt virtualization library http://libvirt.org

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