Solusvm kvm migration 2-minute outage

Solusvm_kvm_migration_2-minute_outage.sh

#New host

#Create a bank LV the same size as the source
lvcreate -L 400G -n kvm133_img vm_vg

#Old Host

#Creat a snapshot to stop any new data being written to the 400G LV, All changes get written to the snap lv now
lvcreate --snapshot -L10G -n kvm133-snap /dev/4tb_raid_vg/kvm133_img

#Copy the data from the source lv to the new hosts blank lv
dd if=/dev/4tb_raid_vg/kvm133_img bs=1M | pv -ptrb -s 400G | ssh [email protected] 'dd of=/dev/vm_vg/kvm133_img'
# Relax and have a drink

# Wait

# Tap your foot and wait some more


#Shut down vm the on the old host
virsh shutdown kvm133

#Then lastly Sync the data that was changed in the vps while the 400g was copied, should only take 1 minute
lvmsync /dev/4tb_raid_vg/kvm133-snap [email protected]:/dev/vm_vg/kvm133_img

#Solusvm master
/scripts/vm-migrate 77 8

#Then boot the vm up on the new node, don't forget to remove the source LV once your sure everything went well