On 06/03/2014 17:05, Frederic Van Espen wrote:
Our requirements: - easily create snapshots - easily create backups
(perhaps on another external storage) - in case of hardware failure
ability to restore on a newly installed node I'd like the list's
recommendations and experiences for what to use for the local
filesystem. Should we put the disk images in an LVM group? Maybe
better to just put them on an ext4 filesystem with qcow images? What
about all the fuss around ZFS? Keep in mind we'd like to use both CT's
and VM's.
- Use Raid10 (4+ disks). Avoid Raid5 for these reasons:
http://community.spiceworks.com/topic/356486-why-is-raid5-so-bad)
- Configure LVM on top of it on the host and configure it on the pve
storage web panel
- Make simple scripts like this one to create and backup snapshots (even
on mounted nfs):
#!/bin/sh
# destination backup path (even NFS or other network fs mounted)
DESTBACKUP=/<destinationmountpoint>
# LVM Volume Group path
LVMCLUSTER=/dev/<lvmvolumegroup>
# we want to be sure that all the LV's are up and available
/sbin/vgchange -ay
#backup vm 101 disk 1
/sbin/lvcreate -L4G -s -n backup-101-1 ${LVMCLUSTER}/vm-101-disk-1
/bin/dd bs=65536 if=${LVMCLUSTER}/backup-101-1 | gzip >
${DESTBACKUP}/backup-101-1.img.gz
/sbin/lvremove -f ${LVMCLUSTER}/backup-101-1
[...]
Brgds,
Massimo Santoro
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