From: "Marc Patino Gómez" <mpatino@es.clara.net>
To: LVM general discussion and development <linux-lvm@redhat.com>
Subject: Re: [linux-lvm] Backuping "special" snapshots
Date: Wed, 03 Oct 2007 11:20:01 +0200 [thread overview]
Message-ID: <47035EC1.3080502@es.clara.net> (raw)
In-Reply-To: <47035C3D.2010901@redhat.com>
Hi Bryn,
many thanks for the info. I'm going to read kpartx documentation.
Regards,
Marc
Bryn M. Reeves wrote:
> -----BEGIN PGP SIGNED MESSAGE-----
> Hash: SHA1
>
> Marc Patino G�mez wrote:
>
>> Hi list,
>>
>> I am searching a way to backup a "special" logical volume. This special
>> lv doesn't contains a filesystem, it contains a hole image disk of a
>> running server (MBR,Partition Table, Partitions and filesystems), in
>> fact it is a VBD (Virtual Block Device) of a HVM Xen Guest.
>>
>> I want to be able to make the backup without shutting down the Virtual
>> Machine, but the traditional way :
>>
>> - make a snapshot
>> - mount snapshot
>> - backup the snapshots
>> - umount snapshot
>> - remove snapshot
>>
>> is not suitable for this kind of logical volumes.
>>
>> I search some information about it, but the only clue is:
>>
>> fdisk -l -u /dev/vg00/lv00
>>
>
> Hi Marc,
>
> You can use the kpartx tool for this. It was originally written as part
> of multipath-tools and it allows you to map the partitions on a
> device-mapper device like an LVM2 logical volume.
>
> E.g. you would run:
>
> # kpartx -a /dev/vg00/lv00
>
> And that will scan lv00 for partitions and create new devices in
> /dev/mapper named lv00p1, lv00p2, ... that you can then use to access
> the content of the partitions.
>
> When you're done, run:
>
> # kpartx -d /dev/vg00/lv00
>
> To remove the temporary kpartx maps.
>
> Regards,
> Bryn.
>
> -----BEGIN PGP SIGNATURE-----
> Version: GnuPG v1.4.7 (GNU/Linux)
> Comment: Using GnuPG with Fedora - http://enigmail.mozdev.org
>
> iD8DBQFHA1w96YSQoMYUY94RAhW3AKC9n8+5tzN/FW38+qIUj0a82vvAMQCg0qYb
> bAWnKGAuyZnMoZZz089I2qg=
> =+xgZ
> -----END PGP SIGNATURE-----
>
> _______________________________________________
> linux-lvm mailing list
> linux-lvm@redhat.com
> https://www.redhat.com/mailman/listinfo/linux-lvm
> read the LVM HOW-TO at http://tldp.org/HOWTO/LVM-HOWTO/
>
next prev parent reply other threads:[~2007-10-03 9:19 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2007-10-03 8:47 [linux-lvm] Backuping "special" snapshots Marc Patino Gómez
2007-10-03 9:09 ` Bryn M. Reeves
2007-10-03 9:20 ` Marc Patino Gómez [this message]
2007-10-03 11:23 ` Marc Patino Gómez
2007-10-03 11:25 ` Bryn M. Reeves
2007-10-03 11:56 ` Marc Patino Gómez
2007-10-03 15:16 ` Stuart D. Gathman
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=47035EC1.3080502@es.clara.net \
--to=mpatino@es.clara.net \
--cc=linux-lvm@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 a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox