From: "Richard W.M. Jones" <rjones@redhat.com>
To: Stefan Hajnoczi <stefanha@gmail.com>
Cc: Haoyu Zhang <zhhy.zhanghaoyu@gmail.com>,
qemu-devel <qemu-devel@nongnu.org>,
kvm-devel <kvm@vger.kernel.org>,
Paolo Bonzini <pbonzini@redhat.com>
Subject: Re: [Qemu-devel] implement lvm-aware P2V to reduce time cost significantly for linux server
Date: Sat, 3 Jan 2015 00:47:10 +0000 [thread overview]
Message-ID: <20150103004710.GD9693@redhat.com> (raw)
In-Reply-To: <20150102101929.GA10823@stefanha-thinkpad.redhat.com>
On Fri, Jan 02, 2015 at 10:19:29AM +0000, Stefan Hajnoczi wrote:
> On Sat, Dec 27, 2014 at 09:28:53AM +0800, Haoyu Zhang wrote:
> > I want to P2V a redhat server to kvm vm, and lvm was used to manage disks
> > in the redhat server.
> > I want to only migrate the really used storage to vm image, which can
> > reduce the time cost significantly sometimes,
> > so I need the information of logical volume to physical disks bitmap, to
> > know which physical sectors were really used,
> > any ideas?
> > Is there a tool off-the-shelf have implemented the target?
>
> Have you looked at virt-p2v(1)?
>
> http://libguestfs.org/virt-p2v.1.html
>
> I'm not sure if it sparsifies the disk image during conversion or
> whether you would have to run virt-sparsify(1) afterwards
> (http://libguestfs.org/virt-sparsify.1.html). virt-sparsify(1) can
> definitely unmap LVM's unused space.
It sparsifies automatically during conversion. No need to run
virt-sparsify afterwards :-)
Rich.
--
Richard Jones, Virtualization Group, Red Hat http://people.redhat.com/~rjones
Read my programming and virtualization blog: http://rwmj.wordpress.com
virt-df lists disk usage of guests without needing to install any
software inside the virtual machine. Supports Linux and Windows.
http://people.redhat.com/~rjones/virt-df/
next prev parent reply other threads:[~2015-01-03 0:47 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-12-27 1:28 [Qemu-devel] implement lvm-aware P2V to reduce time cost significantly for linux server Haoyu Zhang
2015-01-02 10:19 ` Stefan Hajnoczi
2015-01-03 0:47 ` Richard W.M. Jones [this message]
2015-01-03 0:52 ` Richard W.M. Jones
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