openstack
/
fuel-octane
Code Issues Proposed changes

Bring back LVM snapshot support

This commit is contained in:
Yuriy Taraday 2015-07-22 14:42:22 +03:00
parent b1462d6c6a
commit fbb7612e8d
1 changed files with 31 additions and 8 deletions
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39
deploy/snapshot_fns
View File

@ -1,5 +1,27 @@
# vim syntax=sh
STATE_PATH="/vms/state"
if type zfs > /dev/null 2>&1; then
SNAP_METHOD="zfs"
STATE_PATH="/vms/state"
else
SNAP_METHOD="lvm"
STATE_PATH="/var/lib/libvirt/qemu/save"
fi
lvm_snapshot() {
local volume=$1 snapname=$2
sudo lvcreate -sn $volume-$snapname -l 100%ORIGIN vms/$volume
}
lvm_revert() {
local volume=$1 snapname=$2
sudo lvconvert --merge vms/$volume-$snapname -i 5
sudo lvcreate -sn $volume-$snapname -l 100%ORIGIN vms/$volume # keep snapshot around
}
lvm_discard() {
local volume=$1 snapname=$2
sudo lvremove -f vms/$volume-$snapname
}
zfs_snapshot() {
local volume=$1 snapname=$2
@ -45,7 +67,7 @@ snapshot_vms() {
sudo chown libvirt-qemu:kvm "$STATE_PATH"
virsh_all suspend "$@"
for domain; do
zfs_snapshot $domain $snapname
${SNAP_METHOD}_snapshot $domain $snapname
snap_arg=""
case $domain in
fuel )
@ -53,7 +75,7 @@ snapshot_vms() {
;;
compute-* )
snap_arg="--diskspec hdb,snapshot=no"
zfs_snapshot $domain-ceph $snapname
${SNAP_METHOD}_snapshot $domain-ceph $snapname
;;
esac
virsh snapshot-create-as $domain $domain-$snapname --atomic --memspec "$STATE_PATH/$domain-$snapname" --diskspec hda,snapshot=no $snap_arg
@ -66,10 +88,10 @@ revert_vms() {
shift
virsh_all destroy "$@"
for domain; do
zfs_revert $domain $snapname
${SNAP_METHOD}_revert $domain $snapname
case $domain in
compute-* )
zfs_revert $domain-ceph $snapname
${SNAP_METHOD}_revert $domain-ceph $snapname
;;
esac
virsh restore "$STATE_PATH/$domain-$snapname" --paused
@ -81,12 +103,13 @@ discard_snapshots() {
local snapname=$1 domain
shift
for domain; do
rm -f "$STATE_PATH/$domain-$snapname"
zfs_discard $domain $snapname
${SNAP_METHOD}_discard $domain $snapname
case $domain in
compute-* )
zfs_discard $domain-ceph $snapname
${SNAP_METHOD}_discard $domain-ceph $snapname
;;
esac
virsh snapshot-delete $domain $domain-$snapname --metadata
sudo rm -f "$STATE_PATH/$domain-$snapname"
done
}