def set_description(self, dbg, sr, key, new_description):
VHDVolume.set_description(
dbg,
sr,
key,
new_description,
gfs2.Callbacks()
)
def stat(self, dbg, sr):
# SR path (sr) is file://<mnt_path>
# Get mnt_path by dropping url scheme
uri = urlparse.urlparse(sr)
mnt_path = "/%s/%s" % (uri.netloc, uri.path)
if not(os.path.isdir(mnt_path)) or not(os.path.ismount(mnt_path)):
raise xapi.storage.api.volume.Sr_not_attached(mnt_path)
# Get the filesystem size
statvfs = os.statvfs(mnt_path)
psize = statvfs.f_blocks * statvfs.f_frsize
fsize = statvfs.f_bfree * statvfs.f_frsize
log.debug("%s: statvfs says psize = %Ld" % (dbg, psize))
overprovision = \
VHDVolume.get_sr_provisioned_size(sr, gfs2.Callbacks()) / psize
return {
"sr": sr,
"name": "SR Name",
"description": "GFS2 SR",
"total_space": psize,
"free_space": fsize,
"overprovision": overprovision,
"datasources": [],
"clustered": True,
"health": ["Healthy", ""]
}
def resize(self, dbg, sr, key, new_size):
return VHDVolume.resize(
dbg,
sr,
key,
new_size,
gfs2.Callbacks()
)
def create(self, dbg, sr, name, description, size):
return VHDVolume.create(
dbg,
sr,
name,
description,
size,
gfs2.Callbacks()
)
def set(self, dbg, sr, key, k, v):
VHDVolume.set(key, k, v, gfs2BaseCallbacks)
return None
def resize(self, dbg, sr, key, new_size):
return VHDVolume.destroy(dbg, sr, key, new_size, gfs2BaseCallbacks)
def destroy(self, dbg, sr, key):
return VHDVolume.destroy(dbg, sr, key, gfs2BaseCallbacks)
def snapshot(self, dbg, sr, key):
return VHDVolume.snapshot(dbg, sr, key, gfs2BaseCallbacks)
def clone(self, dbg, sr, key):
return VHDVolume.clone(dbg, sr, key, gfs2BaseCallbacks)
def set_name(self, dbg, sr, key, new_name):
VHDVolume.set_name(key, new_name, gfs2BaseCallbacks)
return None
call(dbg, ["gfs2_grow", mountpoint_root + "dev/" + vg_name +"/gfs2"])
except Exception, e:
raise e
finally:
if f:
util.unlock_file(dbg,f)
else:
log.debug("No free space detected in VG")
except Exception, e:
log.debug("Exception in SR.ls: %s" %str(e))
finally:
return VHDVolume.ls(dbg, sr, gfs2.Callbacks())
def stat(self, dbg, sr):
# SR path (sr) is file://<mnt_path>
# Get mnt_path by dropping url scheme
uri = urlparse.urlparse(sr)
mnt_path = "/%s/%s" % (uri.netloc, uri.path)
if not(os.path.isdir(mnt_path)) or not(os.path.ismount(mnt_path)):
raise xapi.storage.api.volume.Sr_not_attached(mnt_path)
# Get the filesystem size
statvfs = os.statvfs(mnt_path)
psize = statvfs.f_blocks * statvfs.f_frsize
fsize = statvfs.f_bfree * statvfs.f_frsize
log.debug("%s: statvfs says psize = %Ld" % (dbg, psize))
def stat(self, dbg, sr, key):
return VHDVolume.stat(dbg, sr, key, gfs2.Callbacks())
def set_name(self, dbg, sr, key, new_name):
VHDVolume.set_name(dbg, sr, key, new_name, gfs2.Callbacks())
def unset(self, dbg, sr, key, k):
VHDVolume.unset(dbg, sr, key, k, gfs2.Callbacks())
def set(self, dbg, sr, key, k, v):
VHDVolume.set(dbg, sr, key, k, v, gfs2.Callbacks())
def unset(self, dbg, sr, key, k):
VHDVolume.unset(key, k, gfs2BaseCallbacks)
return None
def set_description(self, dbg, sr, key, new_description):
VHDVolume.set_description(key, new_description, gfs2BaseCallbacks)
return None
def create(self, dbg, uri, name, description, configuration):
log.debug("%s: SR.create: uri=%s, config=%s" % (dbg, uri, configuration))
cmd = ["/usr/sbin/corosync-cmapctl", "totem.cluster_name"]
out = call(dbg, cmd).rstrip()
# Cluster id is quite limited in size
cluster_name = out.split("=")[1][1:9]
# Generate a UUID for the filesystem name
# According to mkfs.gfs2 manpage, SR name can only be 1--16 chars in length
sr_name = str(uuid.uuid4())[0:16]
fsname = "%s:%s" % (cluster_name, sr_name)
# Zone-in the LUN
dev_path = plug_device(dbg, uri)
log.debug("%s: dev_path = %s" % (dbg, dev_path))
cmd = ["/usr/bin/dd", "if=/dev/zero", "of=%s" % dev_path, "bs=1M",
"count=10", "oflag=direct"]
call(dbg, cmd)
unique_id = get_unique_id_from_dev_path(dev_path)
# create the VG on the LUN
cmd = ["/usr/sbin/vgcreate", "-f", unique_id, dev_path, "--config", "global{metadata_read_only=0}"]
call(dbg, cmd)
# create the sbd LV
cmd = ["/usr/sbin/lvcreate", "-L", "16M", "-n", "sbd", unique_id, "--config", "global{metadata_read_only=0}"]
call(dbg, cmd)
# activate sbd LV
cmd = ["/usr/sbin/lvchange", "-ay", unique_id + "/sbd"]
call(dbg, cmd)
# deactivate sbd LV
cmd = ["/usr/sbin/lvchange", "-an", unique_id + "/sbd"]
call(dbg, cmd)
# create the gfs2 LV
cmd = ["/usr/sbin/lvcreate", "-l", "100%FREE", "-n", "gfs2", unique_id, "--config", "global{metadata_read_only=0}"]
call(dbg, cmd)
# activate gfs2 LV
cmd = ["/usr/sbin/lvchange", "-ay", unique_id + "/gfs2"]
call(dbg, cmd)
gfs2_dev_path = "/dev/" + unique_id + "/gfs2"
# Make the filesystem
cmd = ["/usr/sbin/mkfs.gfs2",
"-t", fsname,
"-p", "lock_dlm",
"-r", "2048",
"-J", "128",
"-O",
"-j", "16",
gfs2_dev_path]
call(dbg, cmd)
# Temporarily mount the filesystem so we can write the SR metadata
mnt_path = mount_local(dbg, gfs2_dev_path)
# Create the metadata database
VHDVolume.create_metabase(mnt_path + "/sqlite3-metadata.db")
read_caching = True
if 'read_caching' in configuration:
if configuration['read_caching'] not in ['true', 't', 'on', '1', 'yes']:
read_caching = False
meta = {
"name": name,
"description": description,
"uri": uri,
"unique_id": unique_id,
"fsname": fsname,
"read_caching": read_caching,
"keys": {}
}
metapath = mnt_path + "/meta.json"
log.debug("%s: dumping metadata to %s: %s" % (dbg, metapath, meta))
with open(metapath, "w") as json_fp:
json.dump(meta, json_fp)
json_fp.write("\n")
umount(dbg, mnt_path)
# deactivate gfs2 LV
cmd = ["/usr/sbin/lvchange", "-an", unique_id + "/gfs2"]
call(dbg, cmd)
unplug_device(dbg, uri)
return
def stat(self, dbg, sr, key):
return VHDVolume.stat(key, gfs2BaseCallbacks)
def snapshot(self, dbg, sr, key):
return VHDVolume.clone(dbg, sr, key, gfs2.Callbacks())