From: Max Reitz <mreitz@redhat.com>
To: "Michael S. Tsirkin" <mst@redhat.com>
Cc: "Dr. David Alan Gilbert" <dgilbert@redhat.com>,
"Michal Suchánek" <msuchanek@suse.de>,
"Kevin Wolf" <kwolf@redhat.com>,
ehabkost@redhat.com, qemu-block@nongnu.org,
"Richard W.M. Jones" <rjones@redhat.com>,
qemu-devel@nongnu.org, stefanha@redhat.com
Subject: Re: [Qemu-devel] storing machine data in qcow images?
Date: Wed, 6 Jun 2018 17:04:17 +0200 [thread overview]
Message-ID: <4d65e825-5018-a29e-e883-1370ca5461b3@redhat.com> (raw)
In-Reply-To: <20180606174412-mutt-send-email-mst@kernel.org>
[-- Attachment #1: Type: text/plain, Size: 931 bytes --]
On 2018-06-06 16:46, Michael S. Tsirkin wrote:
> On Wed, Jun 06, 2018 at 01:44:02PM +0200, Max Reitz wrote:
>> Because it's a hack, right. Storing binary data in a qcow2 file,
>> completely ignoring it in qemu (and being completely unusable to any
>> potential other users of the qcow2 format[1]) and only interpreting it
>> somewhere up the stack is a hack.
>
> It's just a first step and it ensures compatibility with old QEMU
> versions. But down the road I think we will start warning
> user if the machine type does not match, and possibly even
> get the type from there if user didn't supply it.
If it's a first step we should have an idea on what the following steps
should be.
I don't want people to convince me that adding a blob to qcow2 is a good
idea because "we are only going to store two or three values!" and then
that blob grows out of control because "well, now we have it anyway".
Max
[-- Attachment #2: OpenPGP digital signature --]
[-- Type: application/pgp-signature, Size: 488 bytes --]
next prev parent reply other threads:[~2018-06-06 15:04 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 [this message]
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
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=4d65e825-5018-a29e-e883-1370ca5461b3@redhat.com \
--to=mreitz@redhat.com \
--cc=dgilbert@redhat.com \
--cc=ehabkost@redhat.com \
--cc=kwolf@redhat.com \
--cc=mst@redhat.com \
--cc=msuchanek@suse.de \
--cc=qemu-block@nongnu.org \
--cc=qemu-devel@nongnu.org \
--cc=rjones@redhat.com \
--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.