From: "Richard W.M. Jones" <rjones@redhat.com>
To: Max Reitz <mreitz@redhat.com>
Cc: "Michal Suchánek" <msuchanek@suse.de>,
"Kevin Wolf" <kwolf@redhat.com>,
qemu-devel@nongnu.org, stefanha@redhat.com, ehabkost@redhat.com,
qemu-block@nongnu.org, "Michael S. Tsirkin" <mst@redhat.com>
Subject: Re: [Qemu-devel] storing machine data in qcow images?
Date: Wed, 6 Jun 2018 12:40:35 +0100 [thread overview]
Message-ID: <20180606114035.GG1455@redhat.com> (raw)
In-Reply-To: <bc97cdc3-85ba-e053-0816-b6bc431064fb@redhat.com>
On Wed, Jun 06, 2018 at 01:02:53PM +0200, Max Reitz wrote:
> (I'm wondering if we could write a block driver that could provide such
> a chunk allocation transparently to qcow2... Note that a qcow2 file
> does not need to be continuous, so you could in theory indeed store the
> qcow2 file and its data in completely separate places in a tar file.)
nbdkit-split-plugin
(https://github.com/libguestfs/nbdkit/tree/master/plugins/split). It
currently doesn't support resizing although it could do fairly easily.
> Yeah, but why make qcow2 that format? That's what I completely fail to
> understand.
I started off a long reply here, but I think you're right. If we
cannot make people decide on and use a proper disk image + metadata
container, then it's also unlikely we'll get them to add sensible
metadata to their qcow2 images either :-(
Rich.
--
Richard Jones, Virtualization Group, Red Hat http://people.redhat.com/~rjones
Read my programming and virtualization blog: http://rwmj.wordpress.com
libguestfs lets you edit virtual machines. Supports shell scripting,
bindings from many languages. http://libguestfs.org
next prev parent reply other threads:[~2018-06-06 11:40 UTC|newest]
Thread overview: 157+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-05-18 15:30 [Qemu-devel] storing machine data in qcow images? Michael S. Tsirkin
2018-05-18 16:49 ` Eduardo Habkost
2018-05-18 17:09 ` Daniel P. Berrangé
2018-05-18 17:41 ` Eduardo Habkost
2018-05-19 6:05 ` Markus Armbruster
2018-05-21 18:29 ` Eduardo Habkost
2018-05-21 18:44 ` Daniel P. Berrangé
2018-05-21 19:01 ` Eduardo Habkost
2018-05-23 11:19 ` Markus Armbruster
2018-05-23 12:13 ` Eduardo Habkost
2018-05-23 16:35 ` Markus Armbruster
2018-05-29 14:06 ` Dr. David Alan Gilbert
2018-06-05 21:58 ` Michal Suchánek
2018-05-21 20:18 ` Daniel P. Berrangé
2018-05-21 20:33 ` Eduardo Habkost
2018-05-24 9:58 ` Kashyap Chamarthy
2018-05-22 7:35 ` Gerd Hoffmann
2018-05-22 10:53 ` Eduardo Habkost
2018-05-22 14:19 ` Michael S. Tsirkin
2018-05-22 15:02 ` Kevin Wolf
2018-05-22 15:14 ` Eduardo Habkost
2018-05-23 2:12 ` Fam Zheng
2018-05-23 9:16 ` Kevin Wolf
2018-05-23 14:46 ` Michael S. Tsirkin
2018-05-24 11:17 ` Richard W.M. Jones
2018-05-29 14:03 ` Dr. David Alan Gilbert
2018-05-29 14:14 ` Eduardo Habkost
2018-05-29 14:51 ` Richard W.M. Jones
2018-05-29 15:31 ` Dr. David Alan Gilbert
2018-05-22 8:50 ` Philipp Hahn
2018-05-24 11:32 ` Richard W.M. Jones
2018-05-24 14:56 ` Michael S. Tsirkin
2018-05-24 15:08 ` Kevin Wolf
2018-05-24 15:19 ` Michael S. Tsirkin
2018-05-24 15:20 ` Richard W.M. Jones
2018-05-24 16:25 ` Markus Armbruster
2018-05-28 18:10 ` Max Reitz
2018-05-28 18:30 ` Richard W.M. Jones
2018-05-28 18:38 ` Kevin Wolf
2018-05-28 18:44 ` Max Reitz
2018-05-28 19:09 ` Kevin Wolf
2018-05-29 9:23 ` Max Reitz
2018-05-29 10:14 ` Kevin Wolf
2018-05-29 13:16 ` Eduardo Habkost
2018-05-28 21:20 ` Richard W.M. Jones
2018-05-28 21:25 ` Richard W.M. Jones
2018-05-29 6:44 ` Kevin Wolf
2018-05-29 10:14 ` Max Reitz
2018-06-05 9:21 ` Dr. David Alan Gilbert
2018-06-05 19:03 ` Eduardo Habkost
2018-06-05 19:47 ` Michael S. Tsirkin
2018-06-05 19:54 ` [Qemu-devel] [Qemu-block] " Eric Blake
2018-06-05 19:58 ` Richard W.M. Jones
2018-06-05 20:09 ` Eric Blake
2018-06-05 20:28 ` Michael S. Tsirkin
2018-06-05 20:46 ` Eric Blake
2018-06-05 21:26 ` Michael S. Tsirkin
2018-06-06 8:07 ` Dr. David Alan Gilbert
2018-06-06 6:23 ` Gerd Hoffmann
2018-06-05 20:06 ` Michael S. Tsirkin
2018-06-06 6:26 ` [Qemu-devel] " Gerd Hoffmann
2018-06-06 9:44 ` Dr. David Alan Gilbert
2018-06-06 13:35 ` Eduardo Habkost
2018-06-06 11:02 ` Max Reitz
2018-06-06 11:14 ` Dr. David Alan Gilbert
2018-06-06 11:26 ` Max Reitz
2018-06-06 12:00 ` Dr. David Alan Gilbert
2018-06-06 12:59 ` Max Reitz
2018-06-06 14:31 ` Dr. David Alan Gilbert
2018-06-06 14:37 ` Daniel P. Berrangé
2018-06-06 14:42 ` Dr. David Alan Gilbert
2018-06-06 14:51 ` Max Reitz
2018-06-06 15:05 ` Dr. David Alan Gilbert
2018-06-06 15:36 ` Eric Blake
2018-06-06 16:11 ` Michal Suchánek
2018-06-06 16:37 ` Eric Blake
2018-06-06 16:32 ` Daniel P. Berrangé
2018-06-06 16:36 ` Dr. David Alan Gilbert
2018-06-07 10:02 ` Andrea Bolognani
2018-06-07 10:22 ` Daniel P. Berrangé
2018-06-07 11:17 ` Andrea Bolognani
2018-06-07 12:38 ` Daniel P. Berrangé
2018-06-07 13:49 ` Dr. David Alan Gilbert
2018-06-07 14:06 ` Andrea Bolognani
2018-06-07 14:45 ` Dr. David Alan Gilbert
2018-06-07 14:56 ` Andrea Bolognani
2018-06-07 15:25 ` Dr. David Alan Gilbert
2018-06-07 20:38 ` Gerd Hoffmann
2018-06-07 10:32 ` Richard W.M. Jones
2018-06-07 10:35 ` Dr. David Alan Gilbert
2018-06-07 10:36 ` Daniel P. Berrangé
2018-06-07 10:54 ` Andrea Bolognani
2018-06-07 19:24 ` Laszlo Ersek
2018-06-08 8:21 ` Dr. David Alan Gilbert
2018-06-08 8:41 ` Daniel P. Berrangé
2018-06-08 8:53 ` Dr. David Alan Gilbert
2018-06-07 21:19 ` Michael S. Tsirkin
2018-06-07 21:18 ` Michael S. Tsirkin
2018-06-07 10:51 ` Andrea Bolognani
2018-06-07 19:38 ` Laszlo Ersek
2018-06-06 17:49 ` Max Reitz
2018-06-06 15:09 ` Michael S. Tsirkin
2018-06-06 17:06 ` Max Reitz
2018-06-07 21:43 ` Michael S. Tsirkin
2018-06-09 21:34 ` Max Reitz
2018-06-11 2:06 ` Michael S. Tsirkin
2018-06-11 8:16 ` Michal Suchánek
2018-06-06 11:42 ` Richard W.M. Jones
2018-06-06 11:48 ` Daniel P. Berrangé
2018-06-06 11:53 ` Max Reitz
2018-06-06 12:03 ` Dr. David Alan Gilbert
2018-06-06 13:15 ` Max Reitz
2018-06-06 12:29 ` Richard W.M. Jones
2018-06-06 11:22 ` [Qemu-devel] [Qemu-block] " Peter Krempa
2018-06-06 10:32 ` [Qemu-devel] " Michal Suchánek
2018-06-06 11:02 ` Max Reitz
2018-06-06 11:19 ` Michal Suchánek
2018-06-06 11:32 ` Max Reitz
2018-06-06 11:37 ` Dr. David Alan Gilbert
2018-06-06 11:44 ` Max Reitz
2018-06-06 12:16 ` Dr. David Alan Gilbert
2018-06-06 13:22 ` Max Reitz
2018-06-06 14:02 ` Dr. David Alan Gilbert
2018-06-06 14:33 ` Max Reitz
2018-06-06 14:41 ` Dr. David Alan Gilbert
2018-06-06 14:55 ` Max Reitz
2018-06-06 15:25 ` Michal Suchánek
2018-06-06 18:02 ` Max Reitz
2018-06-06 18:33 ` Michal Suchánek
2018-06-06 18:36 ` Eduardo Habkost
2018-06-07 18:27 ` [Qemu-devel] [Qemu-block] " Kashyap Chamarthy
2018-06-06 13:42 ` [Qemu-devel] " Eduardo Habkost
2018-06-06 14:55 ` Michael S. Tsirkin
2018-06-06 14:57 ` Max Reitz
2018-06-11 14:10 ` Kevin Wolf
2018-06-06 14:46 ` Michael S. Tsirkin
2018-06-06 15:04 ` Max Reitz
2018-06-06 11:43 ` Michal Suchánek
2018-06-06 11:52 ` Max Reitz
2018-06-06 12:13 ` Michal Suchánek
2018-06-06 13:14 ` Max Reitz
2018-06-06 13:45 ` Michal Suchánek
2018-06-06 13:50 ` Daniel P. Berrangé
2018-06-06 14:14 ` Eduardo Habkost
2018-06-06 14:21 ` Max Reitz
2018-06-06 14:24 ` Daniel P. Berrangé
2018-06-06 14:17 ` Max Reitz
2018-06-06 16:10 ` Eduardo Habkost
2018-06-06 18:09 ` Max Reitz
2018-06-11 8:44 ` Richard W.M. Jones
2018-06-06 11:40 ` Richard W.M. Jones [this message]
2018-06-06 14:31 ` Michael S. Tsirkin
2018-06-06 14:43 ` Michael S. Tsirkin
2018-06-06 14:57 ` Eric Blake
2018-06-06 20:39 ` Eric Blake
2018-06-06 21:01 ` Gerd Hoffmann
2018-06-06 15:02 ` Max Reitz
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=20180606114035.GG1455@redhat.com \
--to=rjones@redhat.com \
--cc=ehabkost@redhat.com \
--cc=kwolf@redhat.com \
--cc=mreitz@redhat.com \
--cc=mst@redhat.com \
--cc=msuchanek@suse.de \
--cc=qemu-block@nongnu.org \
--cc=qemu-devel@nongnu.org \
--cc=stefanha@redhat.com \
/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 an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.