[one-users] Full system datastore

[pawel.orzechowski at budikom.net]

Hi, 

Again, does anybody has some ideas about this. We need to recreate all
VM's and it is not solution for production environment (good that it was
just a begining of migration from XenServer) . 

Here are the steps we did: 

 	* no machine can be run because ON says that system data store is full
(it shows it has 500GB instead of 7GB), 
 	* we stopped all the VM's and then restarted frontend - it did not
helped
 	* the we restarted kvm - it did not helped
 	* we deleted this 500GB /var/tmp/8d187572e1d5ec159420701f9177150c file
- again machines were unable to start
 	* so we deleted VMs and created them again - good they had a template,
but unfortunately now the VM's got new IP addresses so it blocked access
to them from outside world due to firewall rules
 	* now after above steps system datastore has magically moved to
frontend and has again correct capacity of 7GB

So the questions now: 

 	* how can system datastore move from frontend to kvm? Can it be moved
manually?
 	* what is the system datastore used for?
 	* wouldn't it be better if system datastore be placed on ceph and is
it possible that it can be placed on ceph?

Regards 

Pawel 

--- 

Paweł Orzechowski
pawel.orzechowski at budikom.net
BUDIKOM.NET
ul. Trzy Lipy 3, GPNT, bud. C
80-172 Gdańsk
tel.: +48 58 58 58 708
email: biuro at budikom.net

W dniu 2014-08-05 08:32, Mateusz Skała napisał(a): 

> Hi,
> I run some VM's on OpenNebula, but after few machines system datastore 
> are full. As Image backend we are using ceph datastore (and there is 
> enough disk space), but system datastore is probably from kvm host, from 
> file /var/tmp/8d187572e1d5ec159420701f9177150c.
> How can I make some free space? It is possible to move system datastore 
> on Ceph?
 
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