Hi Cyrille, Try taking a look at UnionFS: http://unionfs.filesystems.org/
It can be mounted overtop of the root filesystem giving you access to the files in the filesystem beneath, while changes are recorded in the unionfs filesystem. An example using a compressed squashfs image as the root filesystem and then mounting unionfs over top can be found here: http://www.tldp.org/HOWTO/html_single/SquashFS-HOWTO/#sqwrite Cheers, Evan. From: [email protected] [mailto:[email protected]] On Behalf Of Duverne, Cyrille Sent: Tuesday, 4 December 2012 11:12 a.m. To: Mailing List OPENNEBULA Subject: [one-users] Info on Partition and volatile disks Dear mailing list, I always have some topics to make your brain run as fast as light :) : - I have a base image of 3Gb of Ubuntu Server - Depending on the request I add a volatile disk of 15 / 50 / 150 Gb (this to avoid copying 150G each time I deploy a VM) But since the root partition is 3G large, some users are making it exploding without using the 15G free. I'd like to use the free storage as hosting partition for /var, /usr, /home. How could I achieve this since the disk volatile and provisioned on the fly at the deployment. I'm trying to mv /var etc... in init.sh at startup, but it make the VM to never start (maybe because /var/lock, /var/run aren't accessible) I think symlinks are the best way to do this, I might be wrong. Please help :) Regards CyD
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