Hi
On 29.4.2010 г. 15:28 ч., Marc Olive wrote:
Hello,
I have a pretty backup script that takes care about files, only about files,
using commands like "cp" and "rsync". There's no tar.gz nor snapshots about
the filesystem as a whole and takes no care about partitions tables or LVM,
it only copies files.
And I don't want an image-like file, as a tar made by vzdump or LVM snapshop
would be, so I can't not use them.
To use it to backup OpenVZ containers it's enought to copy the files
inside /var/lib/vz/private/$CID and /etc/vz/conf/$CID.conf, suspending
previsously the CT? What about the files inside /var/lib/vz/root/$CID?
If the VE is still running, you must use the files inside
/var/lib/vz/root/$CID. Actually every single folder inside
/var/lib/vz/root/ is "bind-mounted" to /var/lib/vz/private/$CID, so
there isn't any difference between them. Though if you want to change
something from CT0 inside a VE, use the /var/lib/vz/root/$CID path. This
way vzquota is aware of the changes you make "inside" the VE and the
VE-quota is measured correctly.
Something like this simplified commands:
]$ CID=XYZ
]$ vzctl chkpnt $CID --dumpfile<path>
This command saves a complete state of a running VE to a dump file, and
stops the VE. If an option --dumpfile is not set, default dump file
name /vz/dump/Dump.veid is used.
]$ backup /var/lib/vz/private/$CID (¿vz/root/$CID?)
There is no need to backup files from the private folder, if you already
chkpnt-ed the VE
]$ vzctl restore $CID --dumpfile<path>
This command restores a VE from dump file created by the chkpnt command.
]$ backup /etc/vz/conf/$CID.conf
It's always a good idea to backup the configuration too. In my
environment all VEs are using different configuration.
In case my server was completly lost, will I have enought information to
restore the CT? how should I restore them? Maybe with a process similar as
when I create them from a template?
If you backup the dumpfiles from the containers, you can vzctl restore
the VE in case of a server failure (data loss).
Any other tip or advise besides to test the whole process?
Thanks,
Best regards,
Martin Dobrev
Chief System Administrator
Amotera BG Ltd.
Sofia, Bulgaria
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