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i *think* i'm done the gi version of disk.lvm. LVM is such a mess.

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This commit is contained in:
brent s
2019-11-06 16:58:58 -05:00
parent fbd1d4b0f3
commit 00e9c546d7
6 changed files with 174 additions and 36 deletions
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99
aif/disk/lvm.py
View File

@@ -107,12 +107,13 @@ class VG(object):
self.name = self.xml.attrib('name')
self.lvs = []
self.pvs = []
self.tags = []
for te in self.xml.findall('tags/tag'):
self.tags.append(te.text)
# self.tags = []
# for te in self.xml.findall('tags/tag'):
# self.tags.append(te.text)
_common.addBDPlugin('lvm')
self.devpath = self.name
self.info = None
self.created = False
def addPV(self, pvobj):
if not isinstance(pvobj, PV):
@@ -128,26 +129,31 @@ class VG(object):
# FUCK. LVM. You can't *specify* a UUID.
# u = uuid.uuid4()
# opts.append(_BlockDev.ExtraArg.new('--uuid', str(u)))
for t in self.tags:
opts.append(_BlockDev.ExtraArg.new('--addtag', t))
# for t in self.tags:
# opts.append(_BlockDev.ExtraArg.new('--addtag', t))
_BlockDev.lvm.vgcreate(self.name,
[p.devpath for p in self.pvs],
0,
opts)
for p in self.pvs:
p._parseMeta()
self.created = True
self.updateInfo()
return()
def createLV(self, lv_xml = None):
if not self.created:
raise RuntimeError('VG must be created before LVs can be added')
# If lv_xml is None, we loop through our own XML.
if lv_xml:
lv = LV(lv_xml, self)
lv.create()
self.lvs.append(lv)
# self.lvs.append(lv)
else:
for le in self.xml.findall('logicalVolumes/lv'):
pass
lv = LV(le, self)
lv.create()
# self.lvs.append(lv)
self.updateInfo()
return()
@@ -162,6 +168,8 @@ class VG(object):
return()
def updateInfo(self):
if not self.created:
return()
_info = _BlockDev.lvm.vginfo(self.name)
# TODO: parity with lvm_fallback.VG.updateInfo
# key names currently (probably) don't match and need to confirm the information's all present
@@ -182,11 +190,78 @@ class LV(object):
self.xml = lv_xml
self.id = self.xml.attrib('id')
self.name = self.xml.attrib('name')
self.size = self.xml.attrib('size') # Convert to bytes. Can get max from _BlockDev.lvm.vginfo(<VG>).free
self.vg = vg_obj
self.size = self.xml.attrib('size') # Convert to bytes. Can get max from _BlockDev.lvm.vginfo(<VG>).free TODO
self.vg = vgobj
self.pvs = []
if not isinstance(self.vg, VG):
raise ValueError('vg_obj must be of type aif.disk.lvm.VG')
raise ValueError('vgobj must be of type aif.disk.lvm.VG')
_common.addBDPlugin('lvm')
self.info = None
self.devpath = '/dev/{0}/{1}'.format(self.vg.name, self.name)
self.created = False
self.updateInfo()
self._initLV()
self.devpath = None
pass
def _initLV(self):
self.pvs = []
_indexed_pvs = {i.id: i for i in self.vg.pvs}
for pe in self.xml.findall('pvMember'):
pv_id = pe.attrib('source')
if pv_id in _indexed_pvs.keys():
self.pvs.append(_indexed_pvs[pv_id])
if not self.pvs: # We get all in the VG instead since none were explicitly assigned
self.pvs = self.vg.pvs
return()
def create(self):
if not self.pvs:
raise RuntimeError('Cannot create LV with no associated LVs')
opts = [_BlockDev.ExtraArg.new('--reportformat', 'json')]
# FUCK. LVM. You can't *specify* a UUID.
# u = uuid.uuid4()
# opts.append(_BlockDev.ExtraArg.new('--uuid', str(u)))
# for t in self.tags:
# opts.append(_BlockDev.ExtraArg.new('--addtag', t))
_BlockDev.lvm.lvcreate(self.vg.name,
self.name,
self.size,
None,
[i.devpath for i in self.pvs],
opts)
self.vg.lvs.append(self)
self.created = True
self.updateInfo()
self.vg.updateInfo()
return()
def start(self):
_BlockDev.lvm.lvactivate(self.vg.name,
self.name,
True,
None)
self.updateInfo()
return()
def stop(self):
_BlockDev.lvm.lvdeactivate(self.vg.name,
self.name,
None)
self.updateInfo()
return()
def updateInfo(self):
if not self.created:
return()
_info = _BlockDev.lvm.lvinfo(self.vg.name, self.name)
# TODO: parity with lvm_fallback.LV.updateInfo
# key names currently (probably) don't match and need to confirm the information's all present
info = {}
for k in dir(_info):
if k.startswith('_'):
continue
elif k in ('copy',):
continue
v = getattr(_info, k)
info[k] = v
self.info = info
return()

16
aif/disk/mdadm.py
View File

@@ -104,11 +104,11 @@ class Array(object):
self.layout = None # TODO: log.warn?
else:
self.layout = None
self.devname = self.xml.attrib['name']
self.fulldevname = '{0}:{1}'.format(self.homehost, self.devname)
self.name = self.xml.attrib['name']
self.fullname = '{0}:{1}'.format(self.homehost, self.name)
self.devpath = devpath
if not self.devpath:
self.devpath = '/dev/md/{0}'.format(self.devname)
self.devpath = '/dev/md/{0}'.format(self.name)
self.updateStatus()
self.homehost = homehost
self.members = []
@@ -128,11 +128,11 @@ class Array(object):
opts = [_BlockDev.ExtraArg.new('--homehost',
self.homehost),
_BlockDev.ExtraArg.new('--name',
self.devname)]
self.name)]
if self.layout:
opts.append(_BlockDev.ExtraArg.new('--layout',
self.layout))
_BlockDev.md.create(self.devname,
_BlockDev.md.create(self.name,
str(self.level),
[i.devpath for i in self.members],
0,
@@ -154,7 +154,7 @@ class Array(object):
if scan:
target = None
else:
target = self.devname
target = self.name
_BlockDev.md.activate(target,
[i.devpath for i in self.members], # Ignored if scan mode enabled
None,
@@ -164,12 +164,12 @@ class Array(object):
return()
def stop(self):
_BlockDev.md.deactivate(self.devname)
_BlockDev.md.deactivate(self.name)
self.state = 'disassembled'
return()
def updateStatus(self):
_status = _BlockDev.md.detail(self.devname)
_status = _BlockDev.md.detail(self.name)
# TODO: parity with mdadm_fallback.Array.updateStatus
# key names currently (probably) don't match and need to confirm the information's all present
info = {}

8
aif/disk/mdadm_fallback.py
View File

@@ -158,10 +158,10 @@ class Array(object):
self.layout = None # TODO: log.warn?
else:
self.layout = None
self.devname = self.xml.attrib['name']
self.name = self.xml.attrib['name']
self.devpath = devpath
if not self.devpath:
self.devpath = '/dev/md/{0}'.format(self.devname)
self.devpath = '/dev/md/{0}'.format(self.name)
self.updateStatus()
self.homehost = homehost
self.members = []
@@ -179,7 +179,7 @@ class Array(object):
if not self.members:
raise RuntimeError('Cannot create an array with no members')
cmd = ['mdadm', '--create',
'--name={0}'.format(self.devname),
'--name={0}'.format(self.name),
'--bitmap=internal',
'--level={0}'.format(self.level),
'--metadata={0}'.format(self.metadata),
@@ -224,7 +224,7 @@ class Array(object):
def updateStatus(self):
_info = mdstat.parse()
for k, v in _info['devices'].items():
if k != self.devname:
if k != self.name:
del(_info['devices'][k])
self.info = copy.deepcopy(_info)
return()