Mathieu Kretchner wrote:
Do you have good how to about backup a LV ? and creating a domU in an LV ?
Google for "LVM2 snapshot" or look at the "snapshot" option on the man page for "lvcreate" to answer the first half of your question. Here is a snippet of the cron script that I run twice a day to backup all of my guests while they are running.
/usr/sbin/lvcreate --extents 100%FREE --snapshot --name vmsnapshots /dev/vms/vms /bin/mount /dev/vms/vmsnapshots /vmsnapshots DAY="`date +%A-%H%M`" /usr/bin/time --format "%E" /bin/tar --sparse -zcvf /mnt/ssbackup01/vms-$DAY.tar.gz /var/lib/xend/domains /vmsnapshots /bin/umount /vmsnapshots /usr/sbin/lvremove --force /dev/vms/vmsnapshots
I am also interested in seeing a detailed howto for the "creating a domU in an LV" part of your question. I currently do live backups of all of my virtual machines using LVM2 snapshots but I had to put my virtual machine images in files instead of partitions to accomplish this. I never successfully created a virtual machine in an a logical volume partition. Some people say that I am sacrificing performance by putting my virtual machines in files. If that is true, then I'd love to see a detailed example of creating an arbitrary Xen guest image in a a logical volume. -- Good luck, Aaron Metzger -- Fedora-xen mailing list Fedora-xen@xxxxxxxxxx https://www.redhat.com/mailman/listinfo/fedora-xen
