On Apr 26, 2012, at 2:24 PM, Nux! wrote: > On 26.04.2012 19:21, aurfalien wrote: >> On Apr 26, 2012, at 2:15 PM, Nux! wrote: >> >>> On 26.04.2012 19:12, aurfalien wrote: >>>> On Apr 26, 2012, at 1:54 PM, Nux! wrote: >>>> >>>>> On 26.04.2012 18:23, aurfalien wrote: >>>>>> Hi, >>>>>> >>>>>> While there are a few howtos floating around, what is the >>>>>> standard >>>>>> way to snapshot guests? >>>>>> >>>>>> I went through and converted from raw to pre allocated meta data >>>>>> qcow2 images for this purpose. >>>>>> >>>>>> Some howtos suggest to do an xml snapshot file as so; >>>>>> >>>>>> <domainsnapshot> >>>>>> <name>UbuntuServer_10.10-16032011</name> >>>>>> <description>Snapshot of OS install and updates</description> >>>>>> </domainsnapshot> >>>>>> >>>>>> And then to run as so; >>>>>> >>>>>> virsh snapshot-create UbuntuServer_10.10 >>>>>> UbuntuServer_10.10-ss.xml >>>>>> >>>>>> Seems a bit over kill. >>>>>> >>>>>> I was thinking more along the lines of this; >>>>>> >>>>>> qemu-img snapshot -c $date $filename >>>>>> >>>>>> qemu-img convert -f qcow2 -O qcow2 -s $date $filename >>>>>> $filename-$date >>>>>> >>>>>> Or something like this.Anyways, hoping to see how you all are >>>>>> doing >>>>>> this for best practice sort of thing. >>>>> >>>>> Hi, >>>>> >>>>> I just use LVM snapshots; it's the fastest, most reliable way I >>>>> could >>>>> come with. >>>> >>>> Hi, >>>> >>>> I don't have LVMs. >>>> >>>> But if I did, would it be possible to only snapshot a directory or >>>> will it snapshot the entire file system? >>> >>> Assuming you use LVM on the host to provide the virtual machine with >>> a >>> (virtual) HDD, then snapshotting that will obviously be (virtual) >>> disk-wise. >> >> I used a simple non LVM partitioning scheme. >> >> Can I do directory based snapshots in LVM or is it the entire FS? >> >> I can re implement or redo my host to use LVM. >> >> - aurf >> _______________________________________________ >> CentOS-virt mailing list >> CentOS-virt@xxxxxxxxxx >> http://lists.centos.org/mailman/listinfo/centos-virt > > Aurf, > > LVM is filesystem level, not directory level. What I'd recommend is to > reinstall and use LVM, make a couple of volumes for / and swap and leave > the rest for virtual machines. The real problem with this is that snapshots are still on the local box and I don't have a SAN. With KVM based qcow snaps, I can do snaps over NFS. - aurf _______________________________________________ CentOS-virt mailing list CentOS-virt@xxxxxxxxxx http://lists.centos.org/mailman/listinfo/centos-virt
