start reading in preexisting volume group information and logical volumes

1 files changed, 40 insertions, 0 deletions

diff --git a/lvm.py b/lvm.py
new file mode 100644
index 000000000..3e1cf6eee
--- /dev/null
+++ b/lvm.py
@@ -0,0 +1,40 @@
+# lvm.py - lvm probing control
+#
+# Jeremy Katz <katzj@redhat.com>
+#
+# Copyright 2002 Red Hat, Inc.
+#
+# This software may be freely redistributed under the terms of the GNU
+# general public license.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program; if not, write to the Free Software
+# Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+
+import iutil
+import os,sys
+import string
+
+def vgscan():
+    """Runs vgscan."""
+
+    rc = iutil.execWithRedirect("/usr/sbin/vgscan",
+                                ["vgscan", "-v"],
+                                stdout = "/tmp/lvmout",
+                                stderr = "/tmp/lvmout",
+                                searchPath = 1)
+    if rc:
+        raise SystemError, "vgscan failed"
+
+def vgactivate():
+    """Activate volume groups by running vgchange -ay."""
+
+    rc = iutil.execWithRedirect("/usr/sbin/vgchange",
+                                ["vgchange", "-ay"],
+                                stdout = "/tmp/lvmout",
+                                stderr = "/tmp/lvmout",
+                                searchPath = 1)
+    if rc:
+        raise SystemError, "vgchange failed"
+    
+