def _getAllEntries(self, readFile = True):
lvList = self.lvmCache.getTagged(self.LV_TAG)
entries = dict()
for lvName in lvList:
parts = lvName.split(self.SEPARATOR, 2)
if len(parts) != 3:
raise JournalerException("Bad LV name: %s" % lvName)
type, id, val = parts
if readFile:
# For clone and leaf journals, additional
# data is written inside file
# TODO: Remove dependency on journal type
if type == self.JRN_CLONE or type == self.JRN_LEAF:
fullPath = self.lvmCache._getPath(lvName)
self.lvmCache.activateNoRefcount(lvName,False)
fd = open_file(fullPath)
try:
try:
min_block_size = get_min_blk_size_wrapper(fd)
data = file_read_wrapper(fd, 0, min_block_size, min_block_size)
length, val = data.split(" ", 1)
val = val[:int(length)]
except:
raise JournalerException("Failed to read from journal %s" \
% lvName)
finally:
close(fd)
self.lvmCache.deactivateNoRefcount(lvName)
if not entries.get(type):
entries[type] = dict()
entries[type][id] = val
return entries
def _getAllEntries(self):
lvList = self.lvmCache.getTagged(self.LV_TAG)
entries = dict()
for lvName in lvList:
parts = lvName.split(self.SEPARATOR, 2)
if len(parts) != 3:
raise JournalerException("Bad LV name: %s" % lvName)
type, id, val = parts
# For clone and leaf journals, additional
# data is written inside file
# TODO: Remove dependency on journal type
if type == self.JRN_CLONE or type == self.JRN_LEAF:
fullPath = self.lvmCache._getPath(lvName)
self.lvmCache.activateNoRefcount(lvName,False)
fd = open_file(fullPath)
try:
try:
min_block_size = get_min_blk_size_wrapper(fd)
data = xs_file_read_wrapper(fd, 0, min_block_size, min_block_size)
length, val = data.split(" ", 1)
val = val[:int(length)]
except:
raise JournalerException("Failed to read from journal %s" \
% lvName)
finally:
close(fd)
self.lvmCache.deactivateNoRefcount(lvName)
if not entries.get(type):
entries[type] = dict()
entries[type][id] = val
return entries
def create(self, type, id, val):
"""Create an entry of type "type" for "id" with the value "val".
Error if such an entry already exists."""
valExisting = self.get(type, id)
writeData = False
if valExisting:
raise JournalerException("Journal already exists for '%s:%s': %s" \
% (type, id, valExisting))
lvName = self._getNameLV(type, id, val)
mapperDevice = self._getLVMapperName(lvName)
if len(mapperDevice) > LVM_MAX_NAME_LEN:
lvName = self._getNameLV(type, id)
writeData = True
mapperDevice = self._getLVMapperName(lvName)
assert len(mapperDevice) <= LVM_MAX_NAME_LEN
self.lvmCache.create(lvName, self.LV_SIZE, self.LV_TAG)
if writeData:
fullPath = self.lvmCache._getPath(lvName)
fd = open_file(fullPath, True)
try:
e = None
try:
min_block_size = get_min_blk_size_wrapper(fd)
data = "%d %s" % (len(val), val)
file_write_wrapper(fd, 0, min_block_size, data, len(data))
except Exception as e:
raise
finally:
try:
close(fd)
self.lvmCache.deactivateNoRefcount(lvName)
except Exception as e2:
msg = 'failed to close/deactivate %s: %s' \
% (lvName, e2)
if not e:
util.SMlog(msg)
raise e2
else:
util.SMlog('WARNING: %s (error ignored)' % msg)
except:
util.logException("journaler.create")
try:
self.lvmCache.remove(lvName)
except Exception as e:
util.SMlog('WARNING: failed to clean up failed journal ' \
' creation: %s (error ignored)' % e)
raise JournalerException("Failed to write to journal %s" \
% lvName)
def create(self, type, id, val):
"""Create an entry of type "type" for "id" with the value "val".
Error if such an entry already exists."""
valExisting = self.get(type, id)
writeData = False
if valExisting:
raise JournalerException("Journal already exists for '%s:%s': %s" \
% (type, id, valExisting))
lvName = self._getNameLV(type, id, val)
mapperDevice = self._getLVMapperName(lvName)
if len(mapperDevice) > LVM_MAX_NAME_LEN:
lvName = self._getNameLV(type, id)
writeData = True
mapperDevice = self._getLVMapperName(lvName)
assert len(mapperDevice) <= LVM_MAX_NAME_LEN
self.lvmCache.create(lvName, self.LV_SIZE, self.LV_TAG)
if writeData:
fullPath = self.lvmCache._getPath(lvName)
fd = open_file(fullPath, True)
try:
e = None
try:
min_block_size = get_min_blk_size_wrapper(fd)
data = "%d %s" % (len(val), val)
xs_file_write_wrapper(fd, 0, min_block_size, data,
len(data))
except Exception, e:
raise
finally:
try:
close(fd)
self.lvmCache.deactivateNoRefcount(lvName)
except Exception, e2:
msg = 'failed to close/deactivate %s: %s' \
% (lvName, e2)
if not e:
util.SMlog(msg)
raise e2
else:
util.SMlog('WARNING: %s (error ignored)' % msg)