All of lore.kernel.org
 help / color / mirror / Atom feed
From: Jamie Lokier <jamie@shareable.org>
To: Paul Brook <paul@codesourcery.com>
Cc: qemu-devel@nongnu.org, Charles Duffy <Charles_Duffy@messageone.com>
Subject: Re: [Qemu-devel] [PATCH] add file: migration support (r2)
Date: Tue, 18 Nov 2008 03:04:37 +0000	[thread overview]
Message-ID: <20081118030437.GA940@shareable.org> (raw)
In-Reply-To: <200811140349.58757.paul@codesourcery.com>

Paul Brook wrote:
> > I'm not sure if "live" migration to a file is really useful.  "Dead"
> > migration is useful for suspending a VM to disk.
> 
> Right. That's the point I was trying to make.

I thought of a use for live migration to and from a file.  It's when
you have to restart a host while minimising downtime of all its
guests.  The liveness reduces that downtime.  That could be rebooting,
or simply replacing QEMU/KVM by a newer version.  It would require a
lot of guest memory (collectively), to be worth it.

-- Jamie

  reply	other threads:[~2008-11-18  3:04 UTC|newest]

Thread overview: 9+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2008-11-13 18:04 [Qemu-devel] [PATCH] add file: migration support (r2) Charles Duffy
2008-11-13 18:39 ` Jamie Lokier
2008-11-13 18:44 ` Paul Brook
2008-11-13 18:49   ` Anthony Liguori
2008-11-14  3:33   ` Jamie Lokier
2008-11-14  3:49     ` Paul Brook
2008-11-18  3:04       ` Jamie Lokier [this message]
2008-11-18 12:57         ` Paul Brook
2008-11-18 14:26           ` Anthony Liguori

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=20081118030437.GA940@shareable.org \
    --to=jamie@shareable.org \
    --cc=Charles_Duffy@messageone.com \
    --cc=paul@codesourcery.com \
    --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 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.