extend documentation about converting disks and DRBD

[mirror/dsa-wiki.git] / input / howto / install-ganeti.creole

diff --git a/input/howto/install-ganeti.creole b/input/howto/install-ganeti.creole
index 15659f9..ba5f690 100644 (file)
--- a/input/howto/install-ganeti.creole
+++ b/input/howto/install-ganeti.creole
@@ -330,3 +330,29 @@ Please note that the hook scripts are run only at instance instantiation.  When
 adding interfaces to an instance, the guest opearting system must be updated
 manually.
 
+
+* If you are importing an instance from libvirt with LVM setup, you can adopt LVs:
+
+{{{
+    gnt-instance add -t plain --os-type debootstrap+dsa-wheezy \
+      --disk 0:adopt=lully-boot \
+      --disk 1:adopt=lully-root \
+      --disk 2:adopt=lully-swap \
+      --disk 3:adopt=lully-log  \
+      --hypervisor-parameters kvm:initrd_path=,kernel_path= \
+      --net 0:ip=82.195.75.99 -n clementi.debian.org  lully.debian.org
+}}}
+
+And you want to convert it to use DRBD afterwards and start it on the cluster node, so we can ensure that DRBD is correctly working.
+{{{
+    gnt-instance shutdown lully.debian.org
+    gnt-instance modify -t drbd -n czerny.debian.org lully.debian.org
+    gnt-instance failover lully.debian.org
+    gnt-instance startup lully.debian.org
+}}}
+
+* Some instances NEED ide instead of virtio
+
+{{{
+    gnt-instance modify --hypervisor-parameters disk_type=ide fils.debian.org
+}}}