qemu-devel.nongnu.org archive mirror
 help / color / mirror / Atom feed
From: Zhiyong Ye <yezhiyong@bytedance.com>
To: Kevin Wolf <kwolf@redhat.com>
Cc: mreitz@redhat.com, qemu-block@nongnu.org, qemu-devel@nongnu.org
Subject: Re: Questions about how block devices use snapshots
Date: Fri, 13 Jan 2023 16:30:56 +0800	[thread overview]
Message-ID: <ee8efb82-144f-b65f-5811-f74b999c4bf7@bytedance.com> (raw)
In-Reply-To: <Y7/zQYejj+PiT9GC@redhat.com>

Hi Kevin,

Thank you for your patience and explanations. I learned a lot from our 
discussions and thank you again for your help.

Regards

Zhiyong

On 1/12/23 7:47 PM, Kevin Wolf wrote:
> 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
> 


  reply	other threads:[~2023-01-13  8:32 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
2023-01-13  8:30           ` Zhiyong Ye [this message]
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

Reply instructions:

You may reply publicly to this message via plain-text email
using any one of the following methods:

* Save the following mbox file, import it into your mail client,
  and reply-to-all from there: mbox

  Avoid top-posting and favor interleaved quoting:
  https://en.wikipedia.org/wiki/Posting_style#Interleaved_style

* Reply using the --to, --cc, and --in-reply-to
  switches of git-send-email(1):

  git send-email \
    --in-reply-to=ee8efb82-144f-b65f-5811-f74b999c4bf7@bytedance.com \
    --to=yezhiyong@bytedance.com \
    --cc=kwolf@redhat.com \
    --cc=mreitz@redhat.com \
    --cc=qemu-block@nongnu.org \
    --cc=qemu-devel@nongnu.org \
    /path/to/YOUR_REPLY

  https://kernel.org/pub/software/scm/git/docs/git-send-email.html

* If your mail client supports setting the In-Reply-To header
  via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line before the message body. 
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).