Hi,

The low disk space is controlled by a parameter in the engine called 
FreeSpaceCriticalLowInGB, and can be configured using the cli tool 
engine-config.

you should be able to set it to something like 4 GB or maybe 3GB so you can 
start your vms with the following command:

engine-config -s FreeSpaceCriticalLowInGB=3

After doing this you have to restart the engine service (service ovirt-engine 
restart) for the changes to take effect.

If you want to see what the current value is use engine-config -g 
FreeSpaceCriticalLowInGB.


To see a list of all configurable values you can use engine-config --list

Thanks,
Gadi Ickowicz

----- Original Message -----
From: "Gianluca Cecchi" <[email protected]>
To: "users" <[email protected]>
Sent: Tuesday, January 7, 2014 4:57:18 PM
Subject: [Users] how to temporarily solve low disk space problem preventing     
start of VM

Hello,
test cluster with two nodes and GlusterFS DC on f19 and 3.3.2, using
gluster version 3.4.2 from f19 updates-testing repo.
Unfortunately I have only small local disk quite occupied by existing VMs.
About 4Gb free.
I had VMs started and then I shutdown them.
Trying to power on any VM I get:

Error while executing action:

c6s:

Cannot run VM. Low disk space on target Storage Domain gvdata.

On SPM node (node02) that is the only one active I have:

/dev/mapper/fedora-DATA_GLUSTER                 30G   23G  7.8G  75%
/gluster/DATA_GLUSTER
node01.mydomain:gvdata                  30G   26G  4.6G  85%
/rhev/data-center/mnt/glusterSD/node01.mydomain:gvdata

Can I tweak this low disk warning in any way? How does engine make
this kind of check?

Thanks in advance
Gianluca
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