From: John Snow <jsnow@redhat.com>
To: Changlimin <changlimin@h3c.com>, Max Reitz <mreitz@redhat.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: Tue, 31 Oct 2017 16:00:16 -0400 [thread overview]
Message-ID: <e88f74be-e219-bc1f-2f41-05ec29824897@redhat.com> (raw)
In-Reply-To: <BC29A004BA570342A4CC0044A3845572CFCE5D44@H3CMLB12-EX.srv.huawei-3com.com>
On 10/26/2017 03:18 AM, Changlimin wrote:
> If the qcow2 file is created with preallocation=full, I think metadata will not corrupt when it is shared between two vms? Snapshot is not required.
>
> Is this right?
>
You can only share images read-only in this way. If you are asking to
share one qcow2 as r/w across two VMs, that's not going to work
regardless of how you allocate them, or the image format you are using.
--js
> BR
> Chang limin
>
prev parent reply other threads:[~2017-10-31 20:00 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
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 [this message]
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