def info(self, name='all'):
volumes = {}
program = [
"/usr/sbin/gluster",
"--remote-host=%s" % self.__remote_host, "volume", "info", name
]
try:
response = subprocess.check_output(
program, stderr=subprocess.STDOUT).split("\n")
except subprocess.CalledProcessError, e:
raise ExceptionGluster(e.output)
def create(self,
name,
list_bricks,
transport='tcp',
stripe=None,
replica=None,
quota=None):
brickdiv = 1
if name is None or name == "":
raise KeyError("Volume must have a name")
if list_bricks is None or len(list_bricks) == 0:
raise KeyError("Volume must have bricks")
program = [
"/usr/sbin/gluster",
"volume",
"create",
name,
]
if stripe is not None:
stripe = int(stripe)
program.append("stripe")
program.append(str(stripe))
brickdiv = stripe
if replica is not None:
replica = int(replica)
program.append("replica")
program.append(str(replica))
brickdiv = brickdiv * replica
if transport is not None:
transport = transport if transport in ("tcp", "rdma", "tcp,rdma",
"rdma,tcp") else "tcp"
program.append("transport")
program.append(transport)
if len(list_bricks) % brickdiv:
raise KeyError(
"Invalid brick count. Bricks must be in multiples of %d" %
brickdiv)
[program.append(x) for x in list_bricks]
try:
response = subprocess.check_output(program).split("\n")
success = "volume create: %s: success: please start the volume to access data" % name
if not success in response:
raise ExceptionVolumeCreate(response)
except subprocess.CalledProcessError, e:
raise ExceptionGluster(e.output)
def probe(self, peer):
if peer is None or peer == '':
raise KeyError("You must set the peer to probe")
try:
response = subprocess.check_output(
["/usr/sbin/gluster", "peer", "probe", peer])
if response == "peer probe: success. Probe on localhost not needed":
raise ExceptionProbeLocalhost(response)
if response[:13] == "Probe on host":
raise ExceptionProbeWarning(response)
if response[:33] == "Probe returned with unknown errno":
raise ExceptionProbeError(response)
return True
except subprocess.CalledProcessError, e:
raise ExceptionGluster(e.output)
def __status(self, remote_host=None, recursion=False):
if remote_host is None:
remote_host = self.__remote_host
peerstatus = {
"host": {},
}
program = [
"/usr/sbin/gluster",
"--remote-host=%s" % remote_host, "peer", "status"
]
try:
response = subprocess.check_output(
program, stderr=subprocess.STDOUT).split("\n")
except subprocess.CalledProcessError, e:
if recursion is False:
raise ExceptionGluster(e.output)
else:
print("Remote host '" + remote_host + "' seems offline")
def detach(self, peer):
if peer is None or peer == '':
raise KeyError("You must set the peer to detach")
try:
response = subprocess.check_output(
["/usr/sbin/gluster", "peer", "detach", peer])
except subprocess.CalledProcessError, e:
response = e.output
if response[-14:] == " is localhost\n":
raise ExceptionDetachLocalhost(response)
if response[-24:] == " is not part of cluster\n":
raise ExceptionDetachNotInCluster(response)
if response[:23] == "Brick(s) with the peer ":
raise ExceptionDetachWarning(response)
if response[:36] == "Detach unsuccessful\nDetach returned ":
raise ExceptionDetachNotInCluster(response)
raise ExceptionGluster(e.output)
def extend(self, name, list_bricks, replica=None):
if name is None or name == "":
raise KeyError("Volume must have a name")
if list_bricks is None or len(list_bricks) == 0:
raise KeyError("Volume must have bricks")
program = ["/usr/sbin/gluster", "volume", "add-brick", name]
if replica is not None and replica > 0:
program.append("replica")
program.append(str(replica))
for brick in list_bricks:
program.append(brick)
try:
response = subprocess.check_output(program).split("\n")
success = "volume add-brick: success"
if not success in response:
raise ExceptionVolumeExtend(response)
except subprocess.CalledProcessError, e:
raise ExceptionGluster(e.output)
if not success in response:
raise ExceptionVolumeStart(response)
except subprocess.CalledProcessError, e:
raise ExceptionGluster(e.output)
#We enable quota if needed
time.sleep(1)
if quota is not None:
program = ["/usr/sbin/gluster", "volume", "quota", name, "enable"]
try:
response = subprocess.check_output(program).split("\n")
success = "volume quota : success" % name
if not success in response:
raise ExceptionVolumeQuotaEnable(response)
except subprocess.CalledProcessError, e:
raise ExceptionGluster(e.output)
# We set the quota
program = [
"/usr/sbin/gluster", "volume", "quota", name, "limit-usage",
"/", quota, "90%"
]
try:
response = subprocess.check_output(program).split("\n")
success = "volume quota : success" % name
if not success in response:
raise ExceptionVolumeQuotaSet(response)
except subprocess.CalledProcessError, e:
raise ExceptionGluster(e.output)
return True