def __moveFilespaces(self, gparray, target_segment):
"""
Moves filespaces for temporary and transaction files to a particular location.
"""
master_seg = gparray.master
default_filespace_dir = master_seg.getSegmentDataDirectory()
cur_filespace_entries = GetFilespaceEntriesDict(
GetFilespaceEntries(gparray, PG_SYSTEM_FILESPACE).run()).run()
pg_system_filespace_entries = GetFilespaceEntriesDict(
GetFilespaceEntries(gparray, PG_SYSTEM_FILESPACE).run()).run()
cur_filespace_name = gparray.getFileSpaceName(
int(cur_filespace_entries[1][0]))
segments = [target_segment] + [
seg for seg in gparray.getDbList()
if seg.getSegmentContentId() == target_segment.getSegmentContentId(
) and seg.getSegmentDbId() != target_segment.getSegmentDbId()
]
self.__logger.info('Starting file move procedure for %s' %
target_segment)
if os.path.exists(
os.path.join(default_filespace_dir,
GP_TRANSACTION_FILES_FILESPACE)):
# On the expansion segments, the current filespace used by existing nodes will be the
# new filespace to which we want to move the transaction and temp files.
# The filespace directories which have to be moved will be the default pg_system directories.
new_filespace_entries = GetFilespaceEntriesDict(
GetCurrentFilespaceEntries(
gparray, FileType.TRANSACTION_FILES).run()).run()
self.__logger.info('getting filespace information')
new_filespace_name = gparray.getFileSpaceName(
int(new_filespace_entries[1][0]))
self.__logger.info(
'getting move operations list for filespace %s' %
new_filespace_name)
operation_list = GetMoveOperationList(
segments, FileType.TRANSACTION_FILES, new_filespace_name,
new_filespace_entries, cur_filespace_entries,
pg_system_filespace_entries).run()
self.__logger.info('Starting transaction files move')
ParallelOperation(operation_list).run()
self.__logger.debug('Checking transaction files move')
try:
for operation in operation_list:
operation.get_ret()
pass
except Exception, e:
self.__logger.info(
'Failed to move transaction filespace. Rolling back changes ...'
)
RollBackFilespaceChanges(gparray.getExpansionSegDbList(),
FileType.TRANSACTION_FILES,
cur_filespace_name,
cur_filespace_entries,
new_filespace_entries,
pg_system_filespace_entries).run()
raise
class GpMirrorListToBuild:
def __init__(self,
toBuild,
pool,
quiet,
parallelDegree,
additionalWarnings=None):
self.__mirrorsToBuild = toBuild
self.__pool = pool
self.__quiet = quiet
self.__parallelDegree = parallelDegree
self.__additionalWarnings = additionalWarnings or []
def getMirrorsToBuild(self):
"""
Returns a newly allocated list
"""
return [m for m in self.__mirrorsToBuild]
def getAdditionalWarnings(self):
"""
Returns any additional warnings generated during building of list
"""
return self.__additionalWarnings
def __moveFilespaces(self, gparray, target_segment):
"""
Moves filespaces for temporary and transaction files to a particular location.
"""
master_seg = gparray.master
default_filespace_dir = master_seg.getSegmentDataDirectory()
cur_filespace_entries = GetFilespaceEntriesDict(
GetFilespaceEntries(gparray, PG_SYSTEM_FILESPACE).run()).run()
pg_system_filespace_entries = GetFilespaceEntriesDict(
GetFilespaceEntries(gparray, PG_SYSTEM_FILESPACE).run()).run()
cur_filespace_name = gparray.getFileSpaceName(
int(cur_filespace_entries[1][0]))
segments = [target_segment] + [
seg for seg in gparray.getDbList()
if seg.getSegmentContentId() == target_segment.getSegmentContentId(
) and seg.getSegmentDbId() != target_segment.getSegmentDbId()
]
logger.info('Starting file move procedure for %s' % target_segment)
if os.path.exists(
os.path.join(default_filespace_dir,
GP_TRANSACTION_FILES_FILESPACE)):
#On the expansion segments, the current filespace used by existing nodes will be the
#new filespace to which we want to move the transaction and temp files.
#The filespace directories which have to be moved will be the default pg_system directories.
new_filespace_entries = GetFilespaceEntriesDict(
GetCurrentFilespaceEntries(
gparray, FileType.TRANSACTION_FILES).run()).run()
logger.info('getting filespace information')
new_filespace_name = gparray.getFileSpaceName(
int(new_filespace_entries[1][0]))
logger.info('getting move operations list for filespace %s' %
new_filespace_name)
operation_list = GetMoveOperationList(
segments, FileType.TRANSACTION_FILES, new_filespace_name,
new_filespace_entries, cur_filespace_entries,
pg_system_filespace_entries).run()
logger.info('Starting transaction files move')
ParallelOperation(operation_list).run()
logger.debug('Checking transaction files move')
try:
for operation in operation_list:
operation.get_ret()
pass
except Exception, e:
logger.info(
'Failed to move transaction filespace. Rolling back changes ...'
)
RollBackFilespaceChanges(gparray.getExpansionSegDbList(),
FileType.TRANSACTION_FILES,
cur_filespace_name,
cur_filespace_entries,
new_filespace_entries,
pg_system_filespace_entries).run()
raise
if os.path.exists(
os.path.join(default_filespace_dir,
GP_TEMPORARY_FILES_FILESPACE)):
new_filespace_entries = GetFilespaceEntriesDict(
GetCurrentFilespaceEntries(
gparray, FileType.TEMPORARY_FILES).run()).run()
new_filespace_name = gparray.getFileSpaceName(
int(new_filespace_entries[1][0]))
operation_list = GetMoveOperationList(
segments, FileType.TEMPORARY_FILES, new_filespace_name,
new_filespace_entries, cur_filespace_entries,
pg_system_filespace_entries).run()
logger.info('Starting temporary files move')
ParallelOperation(operation_list).run()
logger.debug('Checking temporary files move')
try:
for operation in operation_list:
operation.get_ret()
pass
except Exception, e:
logger.info(
'Failed to move temporary filespace. Rolling back changes ...'
)
RollBackFilespaceChanges(gparray.getExpansionDbList(),
FileType.TRANSACTION_FILES,
cur_filespace_name,
cur_filespace_entries,
new_filespace_entries,
pg_system_filespace_entries).run()
raise
