def refreshLVM():
"""Run command which refresh information about LVM"""
vgscan = getProgPath('/sbin/vgscan')
vgchange = getProgPath('/sbin/vgchange')
lvchange = getProgPath('/sbin/lvchange')
if vgscan and vgchange and lvchange:
process(vgscan).success()
process(vgchange,'-ay').success()
process(vgchange,'--refresh').success()
for group in getLvmGroups():
process(lvchange,'-ay',group).success()
process(lvchange,'--refresh',group).success()
def getOsProberHash(getContentFunc=None):
"""Get partition content by os-prober"""
os_prober = getProgPath('/usr/bin/os-prober')
if os_prober:
DEV,LONG,SHORT,TYPE = 0,1,2,3
osProberList = \
map(lambda x:[getUdevDeviceInfo(name=x[DEV]).get('DEVNAME',''),
x[LONG],x[SHORT],x[TYPE]],
filter(lambda x:len(x)>=4,
map(lambda x:x.split(":"),
process(os_prober))))
for osRecord in osProberList:
if "Gentoo" in osRecord[SHORT] and getContentFunc:
osDescr = getContentFunc(osRecord[DEV],addFunc=detectBuild)
if "name" in osDescr and "march" in osDescr and \
"build" in osDescr and "ver" in osDescr and \
(osDescr["ver"] != "0" or osDescr["build"]):
if osDescr['build']:
osDescr['build'] = "-%s"%osDescr['build']
else:
osDescr['build'] = "-%s"%osDescr['ver']
osRecord[SHORT] = \
"{name}-{march}{build}{type}".format(**osDescr)
else:
osRecord[SHORT] = "Gentoo"
elif "Gentoo" in osRecord[SHORT] and "Calculate" in osRecord[LONG]:
osRecord[SHORT] = "Calculate"
osProberHash = \
dict(
map(lambda x:(x[DEV],x[SHORT]),
osProberList))
else:
osProberHash = {}
return osProberHash
def __call__(self,path="",name=""):
"""Get device info by syspath of name"""
typeQuery = "--name" if name else "--path"
value = name or os.path.realpath(path)
keyCache = "%s=%s"%(typeQuery,value)
if not keyCache in self.cache:
if not self.udevadmCmd:
self.udevadmCmd = getProgPath('/sbin/udevadm')
data = \
dict(
filter(lambda x:x[0],
map(lambda x:x.partition("=")[0::2],
process(self.udevadmCmd,"info","--query","property",
typeQuery,value).read().split("\n"))))
tm = time.time()
keyNameCache = data.get('DEVNAME','')
keyPathCache = data.get('DEVPATH','')
if keyNameCache:
keyNameCache = "--name="+keyNameCache
if keyPathCache:
keyPathCache = "--path=/sys"+keyPathCache
if "DEVNAME" in data and not keyNameCache in self.cache:
self.cache[keyNameCache] = data
if "DEVPATH" in data and not keyPathCache in self.cache:
self.cache[keyPathCache] = data
return data
else:
#print "fromCache",keyCache
return self.cache[keyCache]
def refreshUdev():
"""Run command which refresh information about device in udev"""
getUdevDeviceInfo.clearCache()
udevadm = getProgPath('/sbin/udevadm')
if udevadm:
blkidFile = '/etc/blkid.tab'
try:
if path.exists(blkidFile):
os.unlink(blkidFile)
except:
pass
process(udevadm,"trigger","--subsystem-match","block").success()
def getLvmPartitions(vg_name,lv_name,cache=[]):
"""Get lvm partitions"""
if not cache:
pvdisplayCmd = getProgPath('/sbin/pvdisplay')
pvdata = process(pvdisplayCmd,"-C","-o",
"vg_name,lv_name,pv_name","--noh")
if pvdata.success():
cache.extend(
filter(lambda x:x and len(x)==3,
map(lambda x:x.split(),
pvdata.read().split('\n'))))
if cache:
res = map(lambda x:x[2],
filter(lambda x:x[0]==vg_name and x[1]==lv_name,cache))
if res:
return res
return []
def getLvmGroups():
"""Get LVM groups"""
pvdisplayCmd = getProgPath('/sbin/pvdisplay')
pvdata = process(pvdisplayCmd,"-C","-o", "vg_name","--noh")
return filter(lambda x:x,pvdata.read().split())
