Re: [Xen-users] snapshot - backup for xen vm's

[Ralf Schenk <rs@xxxxxxxxxx>]

it-news (Josef Lahmer) schrieb:
> dear list,
> 
> is there a way to make a lvm-snapshot of an running xen-vm to implement a 
> function like "snapshot-backup"?
> 
- Connect to mysql of VM and issue "FLUSH TABLES WITH READ LOCK;FLUSH LOGS"
> #) make snapshot
- Connect to mysql of VM and issue "UNLOCK tables"
> #) mount snapshot
> #) copy files
> #) umount snapshot
> #) remove snapshot
> 
> eg (http://tldp.org/HOWTO/LVM-HOWTO/snapshots_backup.html)
> 
> regards
> josy
> 
> interessting: How to mount a XenVM filesystem on XenServer Host:
> http://kb.xensource.com/entry.jspa?categoryID=14&externalID=162

Hello !

I do this every day. I added two points to your plan which I do with a
small perl script to get consistent Backups of my mysql Databases. I
also create/destroy the snapshot via this skript and mount the snapshot
volume. If you are interested I can send it via Mail.

For the backups I backup the mounted snapshot of the VM via dirvish
(http://dirvish.org) to another Server. I do this also via VPN with
different machines.

In my dirvish configuration I have my perl skript as "pre-client" and
"post-client" skript which get started via ssh and key Authentication.

Bye
-- 
__________________________________________________

Ralf Schenk
fon (02 41) 9 91 21-0
fax (02 41) 9 91 21-59
rs@xxxxxxxxxx

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