From: Kevin Wolf <kwolf@redhat.com>
To: Zhiyong Ye <yezhiyong@bytedance.com>
Cc: mreitz@redhat.com, qemu-block@nongnu.org, qemu-devel@nongnu.org
Subject: Re: Questions about how block devices use snapshots
Date: Thu, 12 Jan 2023 12:47:13 +0100 [thread overview]
Message-ID: <Y7/zQYejj+PiT9GC@redhat.com> (raw)
In-Reply-To: <26114701-2d32-136d-ca44-01048c61842d@bytedance.com>
Am 11.01.2023 um 17:21 hat Zhiyong Ye geschrieben:
> Hi Kevin,
>
> Can I ask again how base.img + diff.qcow2 can be re-merged into one image
> via qemu-img or hmp command when modified.img is discarded?
You can either use 'qemu-img commit' to copy all of the data from
diff.qcow2 back into base.img (this is probably what you want), or
'qemu-img rebase' to copy all of the data from base.img into diff.qcow2.
Kevin
next prev parent reply other threads:[~2023-01-12 11:47 UTC|newest]
Thread overview: 12+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-01-09 12:45 Questions about how block devices use snapshots Zhiyong Ye
2023-01-09 13:57 ` Kevin Wolf
2023-01-11 7:55 ` Zhiyong Ye
2023-01-11 14:32 ` Kevin Wolf
2023-01-11 16:21 ` Zhiyong Ye
2023-01-12 11:47 ` Kevin Wolf [this message]
2023-01-13 8:30 ` Zhiyong Ye
2023-02-21 13:27 ` Zhiyong Ye
2023-02-21 15:58 ` Kevin Wolf
2023-02-23 7:35 ` Zhiyong Ye
2023-02-23 11:39 ` Kevin Wolf
2023-02-23 11:47 ` Zhiyong Ye
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