[Ovirt-devel] [PATCH node] add uninstall module

[Joey Boggs]

---
 scripts/uninstall.py |   75 ++++++++++++++++++++++++++++++++++++++++++++++++++
 1 files changed, 75 insertions(+), 0 deletions(-)
 create mode 100755 scripts/uninstall.py

diff --git a/scripts/uninstall.py b/scripts/uninstall.py
new file mode 100755
index 0000000..9e0baff
--- /dev/null
+++ b/scripts/uninstall.py
@@ -0,0 +1,75 @@
+#!/usr/bin/python
+#
+# uninstall.py - destroys an installed copy of the oVirt node
+
+# SYNOPSIS
+# Destroys the HostVG volume group and logical volumes.
+#
+import ovirtfunctions
+import subprocess
+from subprocess import STDOUT, PIPE
+
+def uninstall():
+    if os.path.isdir("/dev/HostVG"):
+        log("Uninstalling node")
+        log("Detaching logging")
+        # multipathd holds all mounts under /var in a private namespace
+        os.system("service multipathd stop")
+        os.system("rm -f /var/lib/multipath/bindings")
+        unmount_logging()
+        unmount_config("/etc/default/ovirt")
+        #get partition info
+        root2=""
+        rc = os.system("findfs LABEL=RootBackup 2>&1 >/dev/null")
+        if rc == 0:
+            root2 = "RootBackup"
+        rc = os.system("findfs LABEL=RootUpdate 2>&1 >/dev/null")
+        if rc == 0:
+            root2 = "RootUpdate"
+        rc = os.system("findfs LABEL=RootNew 2>&1 >/dev/null")
+        if rc == 0:
+            root2 = "RootNew"
+
+        root_label_lookup_cmd = "findfs LABEL=Root"
+        root_label_lookup = subprocess.Popen(root_label_lookup_cmd, shell=True, stdout=PIPE, stderr=STDOUT)
+        root_device = root_label_lookup.stdout.read()
+        if root_device is None:
+            log("Can't find Root device")
+            sys.exit(2)
+        root_dev, root_part = get_part_info(root_device) 
+
+        root2_label_lookup_cmd = "findfs LABEL=" + root2
+        root2_label_lookup = subprocess.Popen(root2_label_lookup_cmd, shell=True, stdout=PIPE, stderr=STDOUT)
+        root2_device = root2_label_lookup.stdout.read()
+        if root2_device is None:
+            log("Can't find RootBackup/RootNew/RootUpdate device")
+            sys.exit(3)
+        root2_dev, root2_part = get_part_info(root2_device)
+
+        pv_lookup_cmd = "pvs --noheadings -o pv_name,vg_name | grep HostVG | awk '{print $1}'"
+        pv_lookup = subprocess.Popen(pv_lookup_cmd, shell=True, stdout=PIPE, stderr=STDOUT)
+        pv_device = pv_lookup.stdout.read()
+        if pv_device is None:
+            log("Can't find HostVG device")
+            sys.exit(4)
+        pv_dev, pv_part = get_part_info(pv_device)
+
+        log("Removing volume group")
+        wipe_volume_group("HostVG")
+        log("Removing partitions")
+        os.system("parted -s " + root_dev + "\"rm " + root_part + "\"")
+        os.system("pvremove " + vg_dev)
+        os.system("parted -s " + root2_dev + "\"rm " + root2_part +"\"")
+        os.system("parted -s " + vg_dev + "\"rm " + vg_part + "\"")
+        wipe_partitions(pv_dev)
+        wipe_partitions(root_dev)
+        wipe_partitions(root2_dev)
+        #restart multipath
+        os.system("multipath -F")
+        os.system("multipath -v3")
+        os.system("service multipathd start")
+        log("Finished uninstalling node.")
+    else:
+	    log("There is no installed node instance to remove.")
+	    log("Aborting")
+	    sys.exit(1)
-- 
1.7.2.3