document how to move a VM

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+# Move a VM from one cluster to another
+
+* set `dnsTTL` to 30 in ldap for adayevskaya
+* on the target create a new LV to accept the instance
+    ```
+    lvcreate -n install-adayevskaya -L 5g vg_ganeti
+    ```
+* on the source, shut down the instance
+    ```
+    gnt-instance shutdown adayevskaya.debian.org·
+    ```
+* give the source host ssh access to the target:
+  * `cat /etc/ssh/ssh_host_rsa_key.pub`
+  * `tee -a /etc/ssh/userkeys/root`
+  * `iptables -I INPUT -s bm-bl1 -j ACCEPT`
+* copy it over:
+    ```
+    cat /dev/mapper/adayevskaya | ssh root@manda-node03 'cat > /dev/vg_ganeti/install-adayevskaya'
+    # pidof cat, and cat /proc/<pid>/fdinfo/[01]  to check on progress
+    ```
+* clean up ssh and the firewall again:
+    ```
+    puppet agent -t
+    ferm -i /etc/ferm/ferm.conf
+    ```
+* resize partitions if the new block device is larger using `fdisk`.  Delete and create the partition at the same starting position.
+* open the partition table:
+    ```
+    kpartx -a -v -p -part /dev/vg_ganeti/install-adayevskaya
+    ```
+* fsck the filesystem if required, resize if necessary
+    ```
+    fsck.ext4 /dev/mapper/vg_ganeti-install--adayevskaya-part1
+    resize2fs /dev/mapper/vg_ganeti-install--adayevskaya-part1
+    ```
+* mount the partition and fix etc/network/interfaces:
+    ```
+    mkdir /mnt/target-adayevskaya
+    mount /dev/mapper/vg_ganeti-install--adayevskaya-part1 /mnt/target-adayevskaya
+    cd /mnt/target-adayevskaya
+    vi etc/hosts etc/network/interfaces
+    cd /
+    umount /mnt/target-adayevskaya
+    rmdir /mnt/target-adayevskaya
+
+    ```
+* remove partitions
+    ```
+    kpartx -d -v -p -part /dev/vg_ganeti/install-adayevskaya
+    ```
+* create the instance, adopting the block device
+    ```
+    gnt-instance add \
+      --no-ip-check \
+      --no-name-check \
+      -t blockdev \
+      --no-start \
+      -t plain \
+      --disk=0:adopt=install-adayevskaya \
+      --backend-parameters memory=2g,vcpus=2 \
+      --os-type noop \
+      -n manda-node03 \
+      adayevskaya.debian.org
+
+    gnt-instance modify \
+      --disk-template drbd \
+      -n manda-node04.debian.org \
+      adayevskaya.debian.org
+    ```
+* start the instance, check everything works
+    ```
+    gnt-instance start adayevskaya.debian.org
+    gnt-instance console adayevskaya.debian.org
+    ```
+* update ud-ldap (ip addresses, physicalHost, sponsor, location, dnsTTL) and ud-generate
+* ud-replicate on denis
+* check puppet and ssh authkeys on all hosts for the old IP address
+* update nagios
+* remove the instance on the old cluster, remove volumes from puppet/multipath/storage arrays
+