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qmemman: don't load qubes.xml

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Only qubesd should load qubes.xml directly. Put a TODO comments for now
in place of slow VM reporting, invent some better mechanism later.

This loading of qubes.xml caused deadlocks, because qmemnan kept open
file descriptor (in locked state).
This commit is contained in:
Marek Marczykowski-Górecki 2017-07-25 06:17:49 +02:00
parent 5d9bc00885
commit 625c94d1f6
No known key found for this signature in database
GPG Key ID: 063938BA42CFA724
1 changed files with 8 additions and 27 deletions
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35
qubes/qmemman/__init__.py
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@ -30,7 +30,6 @@ import functools
import xen.lowlevel.xc
import xen.lowlevel.xs
import qubes
import qubes.qmemman.algo
@ -141,24 +140,16 @@ class SystemState(object):
self.domdict[i].memory_actual <= self.domdict[i].last_target + self.XEN_FREE_MEM_LEFT/4:
dom_name = self.xs.read('', '/local/domain/%s/name' % str(i))
if dom_name is not None:
try:
qubes.Qubes().domains[str(dom_name)].fire_event(
'status:no-error', status='no-error',
msg=slow_memset_react_msg)
except LookupError:
pass
# TODO: report it somewhere, qubesd or elsewhere
pass
self.domdict[i].slow_memset_react = False
if self.domdict[i].no_progress and \
self.domdict[i].memory_actual <= self.domdict[i].last_target + self.XEN_FREE_MEM_LEFT/4:
dom_name = self.xs.read('', '/local/domain/%s/name' % str(i))
if dom_name is not None:
try:
qubes.Qubes().domains[str(dom_name)].fire_event(
'status:no-error', status='no-error',
msg=no_progress_msg)
except LookupError:
pass
# TODO: report it somewhere, qubesd or elsewhere
pass
self.domdict[i].no_progress = False
#the below works (and is fast), but then 'xm list' shows unchanged memory value
@ -343,13 +334,8 @@ class SystemState(object):
self.domdict[dom2].no_progress = True
dom_name = self.xs.read('', '/local/domain/%s/name' % str(dom2))
if dom_name is not None:
try:
qubes.Qubes().domains[str(
dom_name)].fire_event(
'status:error', status='error',
msg=no_progress_msg)
except LookupError:
pass
# TODO: report it somewhere, qubesd or elsewhere
pass
else:
self.log.warning('dom {!r} still hold more'
' memory than have assigned ({} > {})'
@ -359,13 +345,8 @@ class SystemState(object):
self.domdict[dom2].slow_memset_react = True
dom_name = self.xs.read('', '/local/domain/%s/name' % str(dom2))
if dom_name is not None:
try:
qubes.Qubes().domains[str(
dom_name)].fire_event(
'status:error', status='error',
msg=slow_memset_react_msg)
except LookupError:
pass
# TODO: report it somewhere, qubesd or elsewhere
pass
self.mem_set(dom, self.get_free_xen_memory() + self.domdict[dom].memory_actual - self.XEN_FREE_MEM_LEFT)
return