I think this is a fundamental design problem that is going to take some
serious rework if this is going to work on low memory systems. I hunted
down were the memory is getting eaten up. It's in
DistUpgradeControler.py. I added comments to the procedure below to
show the fatal line. The bottom line is that the system is just trying
to cache more than a machine with limited memory can hande. Someone who
knows more about the what and the why of the cache will have to look and
see if it can be slimmed down.
def doDistUpgrade(self):
# get the upgrade
currentRetry = 0
fprogress = self._view.getFetchProgress()
iprogress = self._view.getInstallProgress(self.cache)
# retry the fetching in case of errors
maxRetries = self.config.getint("Network","MaxRetries")
while currentRetry < maxRetries:
try:
# THIS IS THE FATAL LINE:
res = self.cache.commit(fprogress,iprogress)
# THE ONE ABOVE THIS ONE.
except SystemError, e:
logging.error("SystemError from cache.commit(): %s" % e)
# check if the installprogress catched a pkgfailure, if not,
generate a fallback here
if iprogress.pkg_failures == 0:
errormsg = "SystemError in cache.commit(): %s" % e
apport_pkgfailure("update-manager", errormsg)
# invoke the frontend now
msg = _("The upgrade aborts now. Your system "
"could be in an unusable state. A recovery "
"will run now (dpkg --configure -a).")
if not run_apport():
msg += _("\n\nPlease report this bug against the
'update-manager' "
"package and include the files in
/var/log/dist-upgrade/ "
"in the bugreport.\n"
"%s" % e)
self._view.error(_("Could not install the upgrades"), msg)
# installing the packages failed, can't be retried
self._view.getTerminal().call(["dpkg","--configure","-a"])
self._rewriteAptPeriodic(self.apt_minAge)
return False
except IOError, e:
# fetch failed, will be retried
logging.error("IOError in cache.commit(): '%s'. Retrying
(currentTry: %s)" % (e,currentRetry))
currentRetry += 1
continue
# no exception, so all was fine, we are done
self._rewriteAptPeriodic(self.apt_minAge)
return True
--
[MASTER] [kde] Upgrade tool crashed with " Cannot allocate memory" (edgy ->
feisty)
https://bugs.launchpad.net/bugs/107188
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