def buildMirrors(self, actionName, gpEnv, gpArray):
"""
Build the mirrors.
gpArray must have already been altered to have updated directories -- that is, the failoverSegments
from the mirrorsToBuild must be present in gpArray.
"""
testOutput("building %s segment(s)" % len(self.__mirrorsToBuild))
if len(self.__mirrorsToBuild) == 0:
logger.info("No segments to " + actionName)
return
self.checkForPortAndDirectoryConflicts(gpArray)
logger.info("%s segment(s) to %s" %
(len(self.__mirrorsToBuild), actionName))
self.__verifyGpArrayContents(gpArray)
# make sure the target directories are up-to-date
# by cleaning them, if needed, and then copying a basic directory there
# the postgresql.conf in that basic directory will need updating (to change the port)
toStopDirectives = []
toEnsureMarkedDown = []
cleanupDirectives = []
copyDirectives = []
for toRecover in self.__mirrorsToBuild:
if toRecover.getFailedSegment() is not None:
# will stop the failed segment. Note that we do this even if we are recovering to a different location!
toStopDirectives.append(
GpStopSegmentDirectoryDirective(
toRecover.getFailedSegment()))
if toRecover.getFailedSegment().getSegmentStatus(
) == gparray.STATUS_UP:
toEnsureMarkedDown.append(toRecover.getFailedSegment())
if toRecover.isFullSynchronization():
isTargetReusedLocation = False
if toRecover.getFailedSegment() is not None and \
toRecover.getFailoverSegment() is None:
#
# We are recovering a failed segment in-place
#
cleanupDirectives.append(
GpCleanupSegmentDirectoryDirective(
toRecover.getFailedSegment()))
isTargetReusedLocation = True
if toRecover.getFailoverSegment() is not None:
targetSegment = toRecover.getFailoverSegment()
else:
targetSegment = toRecover.getFailedSegment()
d = GpCopySegmentDirectoryDirective(toRecover.getLiveSegment(),
targetSegment,
isTargetReusedLocation)
copyDirectives.append(d)
self.__ensureStopped(gpEnv, toStopDirectives)
self.__ensureMarkedDown(gpEnv, toEnsureMarkedDown)
self.__cleanUpSegmentDirectories(cleanupDirectives)
self.__copySegmentDirectories(gpEnv, gpArray, copyDirectives)
#Move the filespace for transaction and temporary files
for toRecover in self.__mirrorsToBuild:
target_segment = None
if toRecover.getFailoverSegment() is not None:
target_segment = toRecover.getFailoverSegment()
elif toRecover.isFullSynchronization():
target_segment = toRecover.getFailedSegment()
if target_segment is not None:
self.__moveFilespaces(gpArray, target_segment)
#If we are adding mirrors, we need to update the flat files on the primaries as well
if actionName == "add":
try:
UpdateFlatFiles(gpArray, primaries=True).run()
except MoveFilespaceError, e:
logger.error(str(e))
raise
target_segment = toRecover.getFailedSegment()
if target_segment is not None:
self.__moveFilespaces(gpArray, target_segment)
#If we are adding mirrors, we need to update the flat files on the primaries as well
if actionName == "add":
try:
UpdateFlatFiles(gpArray, primaries=True).run()
except MoveFilespaceError, e:
logger.error(str(e))
raise
else:
try:
print 'updating flat files'
UpdateFlatFiles(gpArray, primaries=False).run()
except MoveFilespaceError, e:
logger.error(str(e))
raise
# update and save metadata in memory
for toRecover in self.__mirrorsToBuild:
if toRecover.getFailoverSegment() is None:
# we are recovering the lost segment in place
seg = toRecover.getFailedSegment()
else:
seg = toRecover.getFailedSegment()
# no need to update the failed segment's information -- it is
# being overwritten in the configuration with the failover segment
for gpArraySegment in gpArray.getDbList():