def __handleStuckUmount(cls, masterDir):
umountPids = utils.pgrep("umount")
try:
masterMount = mount.getMountFromTarget(masterDir)
except OSError as ex:
if ex.errno == errno.ENOENT:
return
raise
for umountPid in umountPids:
try:
state = utils.pidStat(umountPid).state
mountPoint = utils.getCmdArgs(umountPid)[-1]
except:
# Process probably exited
continue
if mountPoint != masterDir:
continue
if state != "D":
# If the umount is not in d state there
# is a possibility that the world might
# be in flux and umount will get stuck
# in an unkillable state that is not D
# which I don't know about, perhaps a
# bug in umount will cause umount to
# wait for something unrelated that is
# not the syscall. Waiting on a process
# which is not your child is race prone
# I will just call for another umount
# and wait for it to finish. That way I
# know that a umount ended.
try:
masterMount.umount()
except mount.MountError:
# timeout! we are stuck again.
# if you are here spmprotect forgot to
# reboot the machine but in any case
# continue with the disconnection.
pass
try:
vgName = masterDir.rsplit("/", 2)[1]
masterDev = os.path.join(
"/dev/mapper",
vgName.replace("-", "--") + "-" + MASTERLV)
except KeyError:
# Umount succeeded after all
return
cls.log.warn(
"master mount resource is `%s`, trying to disconnect "
"underlying storage", masterDev)
iscsi.disconnectFromUndelyingStorage(masterDev)
def __handleStuckUmount(cls, masterDir):
umountPids = utils.pgrep("umount")
try:
masterMount = mount.getMountFromTarget(masterDir)
except OSError as ex:
if ex.errno == errno.ENOENT:
return
raise
for umountPid in umountPids:
try:
state = utils.pidStat(umountPid).state
mountPoint = utils.getCmdArgs(umountPid)[-1]
except:
# Process probably exited
continue
if mountPoint != masterDir:
continue
if state != "D":
# If the umount is not in d state there
# is a possibility that the world might
# be in flux and umount will get stuck
# in an unkillable state that is not D
# which I don't know about, perhaps a
# bug in umount will cause umount to
# wait for something unrelated that is
# not the syscall. Waiting on a process
# which is not your child is race prone
# I will just call for another umount
# and wait for it to finish. That way I
# know that a umount ended.
try:
masterMount.umount()
except mount.MountError:
# timeout! we are stuck again.
# if you are here spmprotect forgot to
# reboot the machine but in any case
# continue with the disconnection.
pass
try:
vgName = masterDir.rsplit("/", 2)[1]
masterDev = os.path.join(
"/dev/mapper", vgName.replace("-", "--") + "-" + MASTERLV)
except KeyError:
# Umount succeeded after all
return
cls.log.warn("master mount resource is `%s`, trying to disconnect "
"underlying storage", masterDev)
iscsi.disconnectFromUndelyingStorage(masterDev)
def test_without_affinity(self):
args = ["sleep", "3"]
sproc = commands.execCmd(args, sync=False)
stats = utils.pidStat(sproc.pid)
pid = int(stats.pid)
# procName comes in the format of (procname)
name = stats.comm
self.assertEquals(pid, sproc.pid)
self.assertEquals(name, args[0])
sproc.kill()
sproc.wait()
def test(self):
args = ["sleep", "3"]
sproc = utils.execCmd(args, sync=False)
stats = utils.pidStat(sproc.pid)
pid = int(stats.pid)
# procName comes in the format of (procname)
name = stats.comm
self.assertEquals(pid, sproc.pid)
self.assertEquals(name, args[0])
sproc.kill()
sproc.wait()
def getCmdArgs(pid):
res = tuple()
# Sometimes cmdline is empty even though the process is not a zombie.
# Retrying seems to solve it.
while len(res) == 0:
# cmdline is empty for zombie processes
if utils.pidStat(pid).state in ("Z", "z"):
return tuple()
res = _parseCmdLine(pid)
return res
def pgrep(name):
res = []
for pid in iteratePids():
try:
pid = int(pid)
except ValueError:
continue
try:
procName = utils.pidStat(pid).comm
if procName == name:
res.append(pid)
except (OSError, IOError):
continue
return res
def test():
nice = utils.pidStat(proc.pid).nice
self.assertEqual(nice, 10)
def test():
nice = utils.pidStat(proc.pid).nice
self.assertEquals(nice, 10)
