Differences

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--- libvirt:libvirt [2014/08/07 10:05] – [Restore] deva
+++ libvirt:libvirt [2016/09/15 19:03] – deva
@@ Line 1: / Line 1: @@
 ======Libvirt======
+=====Resize qcov2 image=====
+<code>
+# Shut down vm
+# On host (to grow 8GB):
+qemu-img resize /images/myimage.qcow2 +8GB
+# Start vm
+# Assuming lvm logical volume inside extended partition...
+# fdisk -l should now show the new disk size.
+# run parted
+(parted) resizepart 2
+GB
+(parted) resizepart 5
+GB
+(parted) quit
+# resize volume group
+pvresize /dev/sda2 # on extended partition
+pvresize /dev/sda5 # on lvm partition
+# extend lvm
+lvextend -l +100%FREE /dev/mapper/devuan--vg-root
+# finally resize file system
+resize2fs /dev/mapper/devuan--vg-root
+</code>
+=====List VMs=====
+<code>
+virsh list --all
+</code>
 =====Copy a VM=====
@@ Line 53: / Line 85: @@
 **NOTE**: Using ntpd to sync a clock that is more than a matter of seconds out-of-sync might require special attention to its config file as it might refuse to synchronize the clock because it is too much out of sync.
+FIXME: Use "virsh blockcopy" for harddrive backup, which will reduce downtime to a matter of seconds in the VM.
 ====Restore====
 <code>
@@ Line 68: / Line 102: @@
 </code>
-**WARNING**: After restoration the rct (clock) will be set to whatever it was on store time. Set the date manually by calling ntpdate (on centos call: "service ntpdate start")
+**WARNING**: After restoration the rtc (clock) will be set to whatever it was on store time. Set the date manually by calling ntpdate (on centos call: "service ntpdate start")