Hello Thank you for this clarification, Mark and Alain!
So, I assume, under Proxmox 1.9 the 4GB Free PE was not enough to enable snapshots without downtime (at least in my case). If I get you right, there is no need to free additional space in Proxmox 2.2? Is there an easy way to calculate how much space will be needed, f.e. for a 300GB heavily used container? Regards, Daniel Am 14.02.2013 um 15:33 schrieb Alain Péan <[email protected]>: > Hello, > > Yes, it's right, you need only the space to store the changes. By default, I > think Proxmox ve 1.x installation leaved 4 GB of empty space in volume > group, but it may be insufficient if backup takes time, or if the VM is > heavily used. It seems that in PVE 2.2, Proxmox installation leaves 16 GB : > root@proxmoxtest00:~# vgdisplay > --- Volume group --- > VG Name pve > System ID > Format lvm2 > .... > VG Size 297.59 GiB > PE Size 4.00 MiB > Total PE 76183 > Alloc PE / Size 72088 / 281.59 GiB > Free PE / Size 4095 / 16.00 GiB > > Alain > > Le 14/02/2013 15:17, Mark Ehle a écrit : >> I might be wrong, but I am under the impression that the spare space only >> has to equal the changes that take place between the snapshot and the >> filesystem while the snapshot exists. >> >> >> On Thu, Feb 14, 2013 at 4:52 AM, Daniel Vuilleumier <[email protected]> >> wrote: >> Hello >> >> Does anybody know whether the "live snapshot" requires us to have empty >> space on the logical volume group in both cases: local backup and backup to >> NFS? >> >> For example: >> My LVM is 1.8TB (maximum size on HW-RAID10). >> I want to live snapshot a 100GB Container. >> >> Do I have to shrink the logical volume to 1.7TB in order to get the snapshot >> done without downtime? >> >> In Proxmox 1.9 this used to be the case, does it still apply to 2.2 (and >> forthcomeing 2.3)? >> >> Regards >> Daniel Vuilleumier >> Zurich, Switzerland >> >> _______________________________________________ >> pve-user mailing list >> [email protected] >> http://pve.proxmox.com/cgi-bin/mailman/listinfo/pve-user >> >> >> >> _______________________________________________ >> pve-user mailing list >> >> [email protected] >> http://pve.proxmox.com/cgi-bin/mailman/listinfo/pve-user > > > -- > Administrateur Système/Réseau > Laboratoire de Photonique et Nanostructures (LPN/CNRS - UPR20) > Centre de Recherche Alcatel Data IV - Marcoussis > route de Nozay - 91460 Marcoussis > Tel : 01-69-63-61-34 > > _______________________________________________ > pve-user mailing list > [email protected] > http://pve.proxmox.com/cgi-bin/mailman/listinfo/pve-user _______________________________________________ pve-user mailing list [email protected] http://pve.proxmox.com/cgi-bin/mailman/listinfo/pve-user
