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qmemman: add some useful logging for #1389

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QubesOS/qubes-issues#1389
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Marek Marczykowski-Górecki 2016-01-14 03:15:38 +01:00
parent f4d46c7855
commit 6a99b0b2ba
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1 changed files with 14 additions and 0 deletions
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14
qmemman/qmemman.py
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@ -47,6 +47,9 @@ class DomainState:
self.no_progress = False #no react to memset
self.slow_memset_react = False #slow react to memset (after few tries still above target)
def __repr__(self):
return self.__dict__.__repr__()
class SystemState(object):
def __init__(self):
self.log = logging.getLogger('qmemman.systemstate')
@ -89,6 +92,17 @@ class SystemState(object):
self.domdict.values(),
0
)
# If, at any time, Xen have less memory than XEN_FREE_MEM_MIN,
# it is a failure of qmemman. Collect as much data as possible to
# debug it
if xen_free < self.XEN_FREE_MEM_MIN:
self.log.error("Xen free = {!r} below acceptable value! "
"assigned_but_unused={!r}, domdict={!r}".format(
xen_free, assigned_but_unused, self.domdict))
elif xen_free < assigned_but_unused+self.XEN_FREE_MEM_MIN:
self.log.error("Xen free = {!r} too small for satisfy assignments! "
"assigned_but_unused={!r}, domdict={!r}".format(
xen_free, assigned_but_unused, self.domdict))
return xen_free - assigned_but_unused
#refresh information on memory assigned to all domains