From: Max Reitz <mreitz@redhat.com>
To: Changlimin <changlimin@h3c.com>, Fam Zheng <famz@redhat.com>
Cc: "qemu-devel@nongnu.org" <qemu-devel@nongnu.org>
Subject: Re: [Qemu-devel] Block format 'raw' does not support the option 'locking' when disable image locking with option locking=off
Date: Thu, 26 Oct 2017 09:11:46 +0200 [thread overview]
Message-ID: <f10f73b8-6b6b-a30e-a147-b7fcaa28b182@redhat.com> (raw)
In-Reply-To: <BC29A004BA570342A4CC0044A3845572CFCE5962@H3CMLB12-EX.srv.huawei-3com.com>
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On 2017-10-26 03:06, Changlimin wrote:
> share-rw=on is good for raw format file, but bad for qcow2 format file:
>
> Failed to get "write" lock
> Is another process using the image?
>
> Is this intented?
Yes, because you can never share qcow2 image files between VMs. The
qcow2 format itself does not support this, as it may lead to metadata
corruption.
Max
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next prev parent reply other threads:[~2017-10-26 7:11 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-10-25 8:15 [Qemu-devel] Block format 'raw' does not support the option 'locking' when disable image locking with option locking=off Changlimin
2017-10-25 13:31 ` Fam Zheng
2017-10-26 1:06 ` Changlimin
2017-10-26 7:11 ` Max Reitz [this message]
2017-10-26 7:18 ` Changlimin
2017-10-26 7:32 ` Max Reitz
2017-10-27 1:28 ` Changlimin
2017-10-31 20:00 ` John Snow
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