From: Avi Kivity <avi@redhat.com>
To: Lukas Laukamp <lukas@laukamp.me>
Cc: kvm@vger.kernel.org
Subject: Re: Secure migration of LVM based guests over WAN
Date: Tue, 16 Oct 2012 12:10:40 +0200 [thread overview]
Message-ID: <507D32A0.8030102@redhat.com> (raw)
In-Reply-To: <507D2D7F.4050904@laukamp.me>
On 10/16/2012 11:48 AM, Lukas Laukamp wrote:
> Am 16.10.2012 11:40, schrieb Avi Kivity:
>> On 10/16/2012 11:12 AM, Lukas Laukamp wrote:
>>> Hey all,
>>>
>>> I have a question about a solution for migrate LVM based guests directly
>>> over the network.
>>>
>>> So the situation: Two KVM hosts with libvirt, multiple LVM based guests
>>> Want to do: Migrate a LVM based guest directly to the other host over an
>>> secure connection
>>>
>>> I know that migration is possible when the VM disks are stored on an
>>> NFS, GFS2 filer/cluster etc.
>>>
>>> So would it be possible to do an offline migration directly with netcat
>>> or something like that?
>>>
>> If all you need is offline, you can use scp to copy each volume to the
>> destination volume. Make sure the guests are shut down when you do that.
>>
>> It is also possible to do a live migration, but unless the destination
>> and source are in the same IP subnet, the guests are going to lose
>> connectivity.
>>
>>
>
> Hello Avi,
>
> so can I simply copy an logical volume to the path of the volume group
> with scp?
Yes. Best to enable compression to avoid sending zero blocks.
>
> For the live migration theme, it would be no problem when the guests
> looses connectivity, how could be done a live migration?
>
See the -b option to the migrate command.
--
error compiling committee.c: too many arguments to function
next prev parent reply other threads:[~2012-10-16 10:10 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-10-16 9:12 Secure migration of LVM based guests over WAN Lukas Laukamp
2012-10-16 9:40 ` Avi Kivity
2012-10-16 9:48 ` Lukas Laukamp
2012-10-16 10:10 ` Avi Kivity [this message]
2012-10-17 10:18 ` Lukas Laukamp
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