Merge pull request #3018 from techhat/develop

Add basic Linux LVM support

salt/modules/linux_lvm.py

@@ -0,0 +1,141 @@
+'''
+Support for Linux LVM2
+'''
+
+# Import salt libs
+import salt.utils
+
+
+def __virtual__():
+    '''
+    Only load the module if lvm is installed
+    '''
+    if salt.utils.which('lvm'):
+        return 'lvm'
+    return False
+
+
+def version():
+    '''
+    Return LVM version from lvm version
+
+    CLI Example::
+
+        salt '*' lvm.version
+    '''
+    cmd = 'lvm version'
+    out = __salt__['cmd.run'](cmd).splitlines()
+    ret = out[0].split(': ')
+    return ret[1].strip()
+
+
+def fullversion():
+    '''
+    Return all version info from lvm version
+
+    CLI Example::
+
+        salt '*' lvm.fullversion
+    '''
+    ret = {}
+    cmd = 'lvm version'
+    out = __salt__['cmd.run'](cmd).splitlines()
+    for line in out:
+        comps = line.split(':')
+	ret[comps[0].strip()] = comps[1].strip()
+    return ret
+
+
+def pvdisplay(pvname=''):
+    '''
+    Return information about the physical volume(s)
+    CLI Examples::
+
+        salt '*' lvm.pvdisplay
+        salt '*' lvm.pvdisplay /dev/md0
+    '''
+    ret = {}
+    cmd = 'pvdisplay -c {0}'.format(pvname)
+    out = __salt__['cmd.run'](cmd).splitlines()
+    for line in out:
+        comps = line.strip().split(':')
+        ret[comps[0]] = {
+            'Physical Volume Device': comps[0],
+            'Volume Group Name': comps[1],
+            'Physical Volume Size (kB)': comps[2],
+            'Internal Physical Volume Number': comps[3],
+            'Physical Volume Status': comps[4],
+            'Physical Volume (not) Allocatable': comps[5],
+            'Current Logical Volumes Here': comps[6],
+            'Physical Extent Size (kB)': comps[7],
+            'Total Physical Extents': comps[8],
+            'Free Physical Extents': comps[9],
+            'Allocated Physical Extents': comps[10],
+            }
+    return ret
+
+
+def vgdisplay(vgname=''):
+    '''
+    Return information about the volume group(s)
+    CLI Examples::
+
+        salt '*' lvm.vgdisplay
+        salt '*' lvm.vgdisplay nova-volumes
+    '''
+    ret = {}
+    cmd = 'vgdisplay -c {0}'.format(vgname)
+    out = __salt__['cmd.run'](cmd).splitlines()
+    for line in out:
+        comps = line.strip().split(':')
+        ret[comps[0]] = {
+            'Volume Group Name': comps[0],
+            'Volume Group Access': comps[1],
+            'Volume Group Status': comps[2],
+            'Internal Volume Group Number': comps[3],
+            'Maximum Logical Volumes': comps[4],
+            'Current Logical Volumes': comps[5],
+            'Open Logical Volumes': comps[6],
+            'Maximum Logical Volume Size': comps[7],
+            'Maximum Phisical Volumes': comps[8],
+            'Current Physical Volumes': comps[9],
+            'Actual Physical Volumes': comps[10],
+            'Volume Group Size (kB)': comps[11],
+            'Physical Extent Size (kB)': comps[12],
+            'Total Physical Extents': comps[13],
+            'Allocated Physical Extents': comps[14],
+            'Free Physical Extents': comps[15],
+            'UUID': comps[16],
+            }
+    return ret
+
+
+def lvdisplay(lvname=''):
+    '''
+    Return information about the logical volume(s)
+    CLI Examples::
+
+        salt '*' lvm.lvdisplay
+        salt '*' lvm.lvdisplay /dev/vg_myserver/root
+    '''
+    ret = {}
+    cmd = 'lvdisplay -c {0}'.format(lvname)
+    out = __salt__['cmd.run'](cmd).splitlines()
+    for line in out:
+        comps = line.strip().split(':')
+        ret[comps[0]] = {
+            'Logical Volume Name': comps[0],
+            'Volume Group Name': comps[1],
+            'Logical Volume Access': comps[2],
+            'Logical Volume Status': comps[3],
+            'Internal Logical Volume Number': comps[4],
+            'Open Logical Volumes': comps[5],
+            'Logical Volume Size': comps[6],
+            'Current Logical Extents Associated': comps[7],
+            'Allocated Logical Extents': comps[8],
+            'Allocation Policy': comps[9],
+            'Read Ahead Sectors': comps[10],
+            'Major Device Number': comps[11],
+            'Minor Device Number': comps[12],
+            }
+    return ret