def changeLVTags(vg, lv, delTags=(), addTags=()):
log.info("Change LV tags (vg=%s, lv=%s, delTags=%s, addTags=%s)", vg, lv,
delTags, addTags)
lvname = '%s/%s' % (vg, lv)
delTags = set(delTags)
addTags = set(addTags)
if delTags.intersection(addTags):
raise se.LogicalVolumeReplaceTagError(
"Cannot add and delete the same tag lv: `%s` tags: `%s`" %
(lvname, ", ".join(delTags.intersection(addTags))))
cmd = ['lvchange']
cmd.extend(LVM_NOBACKUP)
for tag in delTags:
cmd.extend(("--deltag", tag))
for tag in addTags:
cmd.extend(('--addtag', tag))
cmd.append(lvname)
rc, out, err = _lvminfo.cmd(cmd, _lvminfo._getVGDevs((vg, )))
_lvminfo._invalidatelvs(vg, lv)
if rc != 0:
raise se.LogicalVolumeReplaceTagError(
'lv: `%s` add: `%s` del: `%s` (%s)' %
(lvname, ", ".join(addTags), ", ".join(delTags), err[-1]))
def replaceLVTag(vg, lv, deltag, addtag):
"""
Removes and add tags atomically.
"""
lvname = "%s/%s" % (vg, lv)
cmd = (("lvchange", ) + LVM_NOBACKUP + ("--deltag", deltag) +
("--addtag", addtag) + (lvname, ))
rc, out, err = _lvminfo.cmd(cmd, _lvminfo._getVGDevs((vg, )))
_lvminfo._invalidatelvs(vg, lv)
if rc != 0:
raise se.LogicalVolumeReplaceTagError("%s/%s" % (vg, lv),
"%s,%s" % (deltag, addtag))
def changeLVTags(self, vg, lv, delTags=(), addTags=()):
try:
lv_md = self.lvmd[(vg, lv)]
except KeyError:
raise se.LogicalVolumeReplaceTagError("LV %s does not exist",
"%s/%s" % (vg, lv))
# Adding an existing tag or removing a nonexistent tag are ignored
tags = set(lv_md['tags'])
tags |= set(addTags)
tags -= set(delTags)
lv_md['tags'] = tuple(tags)
def changeLVsTags(self, vg, lvs, delTags=(), addTags=()):
lv_mds = []
for lv in lvs:
try:
lv_mds.append(self.lvmd[(vg, lv)])
except KeyError:
raise se.LogicalVolumeReplaceTagError("cmd", 1, ["out"],
["err"])
for lv_md in lv_mds:
# Adding an existing tag or removing a nonexistent tag are ignored
tags = set(lv_md['tags'])
tags |= set(addTags)
tags -= set(delTags)
lv_md['tags'] = tuple(tags)
