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lvmdbusd: Use 'pv_missing' column instead of '[unknown]'

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Previously using '[unknown]' for PV device path comparison which
is incorrect as it's not always true.
This commit is contained in:
Tony Asleson 2016-09-28 11:18:10 -05:00
parent be5eb995d3
commit bd96036835
3 changed files with 14 additions and 5 deletions
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4
daemons/lvmdbusd/cmdhandler.py
View File

@ -469,7 +469,7 @@ def lvm_full_report_json():
'pv_used', 'dev_size', 'pv_mda_size', 'pv_mda_free',
'pv_ba_start', 'pv_ba_size', 'pe_start', 'pv_pe_count',
'pv_pe_alloc_count', 'pv_attr', 'pv_tags', 'vg_name',
'vg_uuid']
'vg_uuid', 'pv_missing']
pv_seg_columns = ['pvseg_start', 'pvseg_size', 'segtype',
'pv_uuid', 'lv_uuid', 'pv_name']
@ -522,7 +522,7 @@ def pv_retrieve_with_segs(device=None):
'pv_used', 'dev_size', 'pv_mda_size', 'pv_mda_free',
'pv_ba_start', 'pv_ba_size', 'pe_start', 'pv_pe_count',
'pv_pe_alloc_count', 'pv_attr', 'pv_tags', 'vg_name',
'vg_uuid', 'pvseg_start', 'pvseg_size', 'segtype']
'vg_uuid', 'pvseg_start', 'pvseg_size', 'segtype', 'pv_missing']
# Lvm has some issues where it returns failure when querying pvs when other
# operations are in process, see:

7
daemons/lvmdbusd/lvmdb.py
View File

@ -433,6 +433,12 @@ class DataStore(object):
rc.append(self.pvs[self.pv_path_to_uuid[s]])
return rc
def pv_missing(self, pv_uuid):
if pv_uuid in self.pvs:
if self.pvs[pv_uuid]['pv_missing'] == '':
return False
return True
def fetch_vgs(self, vg_name):
if not vg_name:
return self.vgs.values()
@ -516,6 +522,7 @@ if __name__ == "__main__":
print("PVS")
for v in ds.pvs.values():
pp.pprint(v)
print('PV missing is %s' % ds.pv_missing(v['pv_uuid']))
print("VGS")
for v in ds.vgs.values():

8
daemons/lvmdbusd/objectmanager.py
View File

@ -320,10 +320,12 @@ class ObjectManager(AutomatedProperties):
# We have a uuid and a lvm_id we can do sanity checks to ensure
# that they are consistent
# If a PV is missing it's device path is '[unknown]'. When
# we see the lvm_id as such we will re-assign to None
# If a PV is missing it's device path is '[unknown]' or some
# other text derivation of unknown. When we find that a PV is
# missing we will clear out the lvm_id as it's likely not unique
# and thus not useful and potentially harmful for lookups.
if path_create == pv_obj_path_generate and \
lvm_id == '[unknown]':
cfg.db.pv_missing(uuid):
lvm_id = None
# Lets check for the uuid first