[ovirt-users] VM incremental backup
Kai Wagner
kai.wagner at it-novum.com
Thu Sep 29 13:10:52 UTC 2016
Hey,
I don't wont to break into your discussion, but I also never heard about
virt-sparsfiy and the sparse option for dd.
I tested it and it works like a charm. I converted a block device 65GB
with dd sparse to 40GB raw image and afterwards I used virsh-sparsify to
reduce the size down to 6.8GB into a qcow2 image file.
Thanks a lot for that hint.
Kai
Am 27.09.2016 um 15:17 schrieb Sven Achtelik:
>
> No, I never came across this approach. I didn’t know about virt-sparsify.
>
> I’ll look into that and give it a try.
>
> Thank you
>
> *Von:*Yaniv Dary [mailto:ydary at redhat.com]
> *Gesendet:* Dienstag, 27. September 2016 15:10
> *An:* Sven Achtelik <Sven.Achtelik at mailpool.us>
> *Cc:* Maton, Brett <matonb at ltresources.co.uk>;
> vasily.lamykin at MegaFon.ru; Ovirt Users <users at ovirt.org>
> *Betreff:* Re: [ovirt-users] VM incremental backup
>
> As I see it you have two options:
> - In backup use 'dd' with 'conv=sparse' (or similar tool that
> allows sparse).
>
> - After backup use virt-sparsify [1] to reduce the size to the real
> used size prior to restore.
>
> To make this extra efficient you can use virt-sparsify anyways after
> backup to make the file even smaller.
>
> Have you considered this approach?
>
> [1] http://libguestfs.org/virt-sparsify.1.html
>
>
> Yaniv Dary
> Technical Product Manager
> Red Hat Israel Ltd.
> 34 Jerusalem Road
> Building A, 4th floor
> Ra'anana, Israel 4350109
> Tel : +972 (9) 7692306
> 8272306
> Email: ydary at redhat.com <mailto:ydary at redhat.com>
> IRC : ydary
>
> On Tue, Sep 27, 2016 at 4:01 PM, Sven Achtelik
> <Sven.Achtelik at mailpool.us <mailto:Sven.Achtelik at mailpool.us>> wrote:
>
> Hi Yaniv,
>
> how can this be done with DD ? Since it doesn’t know if the block
> is free space ? I’ve been looking for such a solution for a long
> time now. Everything I could find out was that I have to use a
> utility that understands the FS and therefore knows where the free
> space is.
>
> Thank you,
>
> Sven
>
> *Von:*users-bounces at ovirt.org <mailto:users-bounces at ovirt.org>
> [mailto:users-bounces at ovirt.org <mailto:users-bounces at ovirt.org>]
> *Im Auftrag von *Yaniv Dary
> *Gesendet:* Dienstag, 27. September 2016 14:38
> *An:* Maton, Brett <matonb at ltresources.co.uk
> <mailto:matonb at ltresources.co.uk>>
> *Cc:* vasily.lamykin at MegaFon.ru
> <mailto:vasily.lamykin at MegaFon.ru>; Ovirt Users <users at ovirt.org
> <mailto:users at ovirt.org>>
> *Betreff:* Re: [ovirt-users] VM incremental backup
>
> Full VM disk backup. If you use dd you can drop the 0 parts of the
> disk.
>
>
> Yaniv Dary
>
> Technical Product Manager
>
> Red Hat Israel Ltd.
>
> 34 Jerusalem Road
>
> Building A, 4th floor
>
> Ra'anana, Israel 4350109
>
> Tel : +972 (9) 7692306 <tel:%2B972%20%289%29%207692306>
>
> 8272306
>
> Email: ydary at redhat.com <mailto:ydary at redhat.com>
>
> IRC : ydary
>
> 2016-09-27 15:27 GMT+03:00 Maton, Brett <matonb at ltresources.co.uk
> <mailto:matonb at ltresources.co.uk>>:
>
> Is there a preferred or recommended backup method in the
> meantime ?
>
> 2016-09-22 10:30 GMT+01:00 vasily.lamykin at MegaFon.ru
> <mailto:vasily.lamykin at MegaFon.ru> <vasily.lamykin at megafon.ru
> <mailto:vasily.lamykin at megafon.ru>>:
>
> Hello!
>
> I would like to understand the existence of the
> possibility of incremental VM backups.
>
> And if it is, the means by which it is achieved.
>
> While I was only able to achieve a complete backup of the
> virtual machine (but it is a very large amount of
> information and time) by cloning a snapshot of the VM and
> export to data domain.
>
> *Ламыкин Василий*
>
> Старший инженер по эксплуатации сервисных платформ
>
> Столичный ф-ал ПАО "МегаФон
>
> +7 (926) 500-3308 <tel:%2B7%20%28926%29%20500-3308>
>
> МегаФон лого+знак РУС B2C
>
> ------------------------------------------------------------------------
>
>
> Информация в этом сообщении предназначена исключительно
> для конкретных лиц, которым она адресована. В сообщении
> может содержаться конфиденциальная информация, которая не
> может быть раскрыта или использована кем-либо, кроме
> адресатов. Если вы не адресат этого сообщения, то
> использование, переадресация, копирование или
> распространение содержания сообщения или его части
> незаконно и запрещено. Если Вы получили это сообщение
> ошибочно, пожалуйста, незамедлительно сообщите отправителю
> об этом и удалите со всем содержимым само сообщение и
> любые возможные его копии и приложения.
>
> The information contained in this communication is
> intended solely for the use of the individual or entity to
> whom it is addressed and others authorized to receive it.
> It may contain confidential or legally privileged
> information. The contents may not be disclosed or used by
> anyone other than the addressee. If you are not the
> intended recipient(s), any use, disclosure, copying,
> distribution or any action taken or omitted to be taken in
> reliance on it is prohibited and may be unlawful. If you
> have received this communication in error please notify us
> immediately by responding to this email and then delete
> the e-mail and all attachments and any copies thereof.
>
> (c)20mf50
>
> _______________________________________________
> Users mailing list
> Users at ovirt.org <mailto:Users at ovirt.org>
> http://lists.ovirt.org/mailman/listinfo/users
>
>
> _______________________________________________
> Users mailing list
> Users at ovirt.org <mailto:Users at ovirt.org>
> http://lists.ovirt.org/mailman/listinfo/users
>
>
>
> _______________________________________________
> Users mailing list
> Users at ovirt.org
> http://lists.ovirt.org/mailman/listinfo/users
it-novum GmbH
i. A. Kai Wagner - Team Lead Support & Presales openATTIC
_____________________________________________________________
Tel: +49 661 103-762
Fax: +49 661 10317762
Mail: Kai.Wagner at it-novum.com
it-novum GmbH • Edelzeller Straße 44 • 36043 Fulda • http://www.it-novum.com/
Handelsregister Amtsgericht Fulda, HRB 1934 • Geschäftsführer: Michael Kienle • Sitz der Gesellschaft: Fulda
Der Inhalt dieser E-Mail ist vertraulich. Wenn Sie nicht der eigentliche Empfänger sein sollten, informieren Sie bitte sofort den Absender oder vernichten umgehend diese Mail. Jegliche unerlaubte Vervielfältigung oder Weiterleitung dieser Mail ist strengstens verboten.
This e-mail may contain confidential and/or priviledged information. If you are not the intended recepient (or have received this e-mail in error) please notify the sender immediately and destroy this e-mail. Any unauthorised copying, disclosure or distribution of material in this e-mail is strictly forbidden.
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.ovirt.org/pipermail/users/attachments/20160929/452f5cfa/attachment-0001.html>
-------------- next part --------------
A non-text attachment was scrubbed...
Name: not available
Type: image/png
Size: 18112 bytes
Desc: not available
URL: <http://lists.ovirt.org/pipermail/users/attachments/20160929/452f5cfa/attachment-0001.png>
-------------- next part --------------
A non-text attachment was scrubbed...
Name: brief.png
Type: image/x-png
Size: 1317 bytes
Desc: not available
URL: <http://lists.ovirt.org/pipermail/users/attachments/20160929/452f5cfa/attachment-0010.bin>
-------------- next part --------------
A non-text attachment was scrubbed...
Name: Flieger.jpg
Type: image/jpeg
Size: 24630 bytes
Desc: not available
URL: <http://lists.ovirt.org/pipermail/users/attachments/20160929/452f5cfa/attachment-0001.jpg>
-------------- next part --------------
A non-text attachment was scrubbed...
Name: wordpress-24.png
Type: image/x-png
Size: 4050 bytes
Desc: not available
URL: <http://lists.ovirt.org/pipermail/users/attachments/20160929/452f5cfa/attachment-0011.bin>
-------------- next part --------------
A non-text attachment was scrubbed...
Name: rss-24.png
Type: image/x-png
Size: 1422 bytes
Desc: not available
URL: <http://lists.ovirt.org/pipermail/users/attachments/20160929/452f5cfa/attachment-0012.bin>
-------------- next part --------------
A non-text attachment was scrubbed...
Name: twitter-24.png
Type: image/x-png
Size: 1318 bytes
Desc: not available
URL: <http://lists.ovirt.org/pipermail/users/attachments/20160929/452f5cfa/attachment-0013.bin>
-------------- next part --------------
A non-text attachment was scrubbed...
Name: xing-24.png
Type: image/x-png
Size: 1359 bytes
Desc: not available
URL: <http://lists.ovirt.org/pipermail/users/attachments/20160929/452f5cfa/attachment-0014.bin>
-------------- next part --------------
A non-text attachment was scrubbed...
Name: linkedin-24.png
Type: image/x-png
Size: 1276 bytes
Desc: not available
URL: <http://lists.ovirt.org/pipermail/users/attachments/20160929/452f5cfa/attachment-0015.bin>
-------------- next part --------------
A non-text attachment was scrubbed...
Name: googleplus-24.png
Type: image/x-png
Size: 1378 bytes
Desc: not available
URL: <http://lists.ovirt.org/pipermail/users/attachments/20160929/452f5cfa/attachment-0016.bin>
-------------- next part --------------
A non-text attachment was scrubbed...
Name: youtube-24.png
Type: image/x-png
Size: 1399 bytes
Desc: not available
URL: <http://lists.ovirt.org/pipermail/users/attachments/20160929/452f5cfa/attachment-0017.bin>
-------------- next part --------------
A non-text attachment was scrubbed...
Name: facebook-24.png
Type: image/x-png
Size: 1206 bytes
Desc: not available
URL: <http://lists.ovirt.org/pipermail/users/attachments/20160929/452f5cfa/attachment-0018.bin>
-------------- next part --------------
A non-text attachment was scrubbed...
Name: itnovum_new.png
Type: image/x-png
Size: 6808 bytes
Desc: not available
URL: <http://lists.ovirt.org/pipermail/users/attachments/20160929/452f5cfa/attachment-0019.bin>
More information about the Users
mailing list