mdadm done
This commit is contained in:
brent s
parent
7e6736f6a2
commit
f424938913
@ -4,10 +4,12 @@ import aif.disk.lvm as lvm
|
||||
import aif.disk.mdadm as mdadm
|
||||
|
||||
|
||||
BlockDev = _common.BlockDev
|
||||
_BlockDev = _common.BlockDev
|
||||
|
||||
|
||||
class LUKS(object):
|
||||
def __init__(self, partobj):
|
||||
def __init__(self, luks_xml, partobj):
|
||||
self.xml = luks_xml
|
||||
_common.addBDPlugin('crypto')
|
||||
self.devpath = None
|
||||
pass
|
||||
|
||||
@ -4,6 +4,7 @@ import aif.disk.mdadm_fallback as mdadm
|
||||
|
||||
|
||||
class LUKS(object):
|
||||
def __init__(self, partobj):
|
||||
def __init__(self, luks_xml, partobj):
|
||||
self.xml = luks_xml
|
||||
self.devpath = None
|
||||
pass
|
||||
|
||||
@ -8,17 +8,23 @@ _BlockDev = _common.BlockDev
|
||||
|
||||
|
||||
class PV(object):
|
||||
def __init__(self, partobj):
|
||||
def __init__(self, pv_xml, partobj):
|
||||
self.xml = pv_xml
|
||||
_common.addBDPlugin('lvm')
|
||||
self.devpath = None
|
||||
pass
|
||||
|
||||
|
||||
class VG(object):
|
||||
def __init__(self, vg_xml, lv_objs):
|
||||
self.xml = vg_xml
|
||||
_common.addBDPlugin('lvm')
|
||||
self.devpath = None
|
||||
pass
|
||||
|
||||
|
||||
class LV(object):
|
||||
def __init__(self, lv_xml, pv_objs):
|
||||
self.xml = lv_xml
|
||||
_common.addBDPlugin('lvm')
|
||||
pass
|
||||
|
||||
@ -1,4 +1,6 @@
|
||||
import datetime
|
||||
import re
|
||||
import uuid
|
||||
##
|
||||
import aif.utils
|
||||
import aif.constants
|
||||
@ -11,16 +13,6 @@ import aif.disk.lvm as lvm
|
||||
_BlockDev = _common.BlockDev
|
||||
|
||||
|
||||
_mdblock_size_re = re.compile(r'^(?P<sectors>[0-9]+)\s+'
|
||||
r'\((?P<GiB>[0-9.]+)\s+GiB\s+'
|
||||
r'(?P<GB>[0-9.]+)\s+GB\)')
|
||||
_mdblock_unused_re = re.compile(r'^before=(?P<before>[0-9]+)\s+sectors,'
|
||||
r'\s+after=(?P<after>[0-9]+)\s+sectors$')
|
||||
_mdblock_badblock_re = re.compile(r'^(?P<entries>[0-9]+)\s+entries'
|
||||
r'[A-Za-z\s]+'
|
||||
r'(?P<offset>[0-9]+)\s+sectors$')
|
||||
|
||||
|
||||
class Member(object):
|
||||
def __init__(self, member_xml, partobj):
|
||||
self.xml = member_xml
|
||||
@ -36,16 +28,46 @@ class Member(object):
|
||||
'aif.disk.luks.LUKS, '
|
||||
'aif.disk.lvm.LV, or'
|
||||
'aif.disk.mdadm.Array'))
|
||||
_common.addBDPlugin('mdraid')
|
||||
self.devpath = self.device.devpath
|
||||
self.is_superblocked = None
|
||||
self.superblock = None
|
||||
self._parseDeviceBlock()
|
||||
|
||||
def _parseDeviceBlock(self):
|
||||
pass
|
||||
# TODO: parity with mdadm_fallback.Member._parseDeviceBlock
|
||||
# key names currently (probably) don't match and need to confirm the information's all present
|
||||
block = {}
|
||||
try:
|
||||
_block = _BlockDev.md.examine(self.devpath)
|
||||
except _BlockDev.MDRaidError:
|
||||
self.is_superblocked = False
|
||||
self.superblock = None
|
||||
return()
|
||||
for k in dir(_block):
|
||||
if k.startswith('_'):
|
||||
continue
|
||||
elif k in ('copy', 'eval'):
|
||||
continue
|
||||
v = getattr(_block, k)
|
||||
if k == 'level':
|
||||
v = int(re.sub(r'^raid', '', v))
|
||||
elif k == 'update_time':
|
||||
v = datetime.datetime.fromtimestamp(v)
|
||||
elif re.search('^(dev_)?uuid$', k):
|
||||
v = uuid.UUID(hex = v)
|
||||
block[k] = v
|
||||
self.superblock = block
|
||||
self.is_superblocked = True
|
||||
return()
|
||||
|
||||
def prepare(self):
|
||||
pass
|
||||
try:
|
||||
_BlockDev.md.denominate(self.devpath)
|
||||
except _BlockDev.MDRaidError:
|
||||
pass
|
||||
_BlockDev.md.destroy(self.devpath)
|
||||
return()
|
||||
|
||||
|
||||
class Array(object):
|
||||
@ -60,22 +82,133 @@ class Array(object):
|
||||
self.metadata = self.xml.attrib.get('meta', '1.2')
|
||||
if self.metadata not in aif.constants.MDADM_SUPPORTED_METADATA:
|
||||
raise ValueError('Metadata version must be one of: {0}'.format(', '.join(
|
||||
aif.constants.MDADM_SUPPORTED_METADATA)))
|
||||
aif.constants.MDADM_SUPPORTED_METADATA)))
|
||||
_common.addBDPlugin('mdraid')
|
||||
self.chunksize = int(self.xml.attrib.get('chunkSize', 512))
|
||||
if self.level in (4, 5, 6, 10):
|
||||
if not aif.utils.isPowerofTwo(self.chunksize):
|
||||
# TODO: log.warn instead of raise exception? Will mdadm lose its marbles if it *isn't* a proper number?
|
||||
raise ValueError('chunksize must be a power of 2 for the RAID level you specified')
|
||||
if self.level in (0, 4, 5, 6, 10):
|
||||
if not aif.utils.hasSafeChunks(self.chunksize):
|
||||
# TODO: log.warn instead of raise exception? Will mdadm lose its marbles if it *isn't* a proper number?
|
||||
raise ValueError('chunksize must be divisible by 4 for the RAID level you specified')
|
||||
self.layout = self.xml.attrib.get('layout', 'none')
|
||||
if self.level in aif.constants.MDADM_SUPPORTED_LAYOUTS.keys():
|
||||
matcher, layout_default = aif.constants.MDADM_SUPPORTED_LAYOUTS[self.level]
|
||||
if not matcher.search(self.layout):
|
||||
if layout_default:
|
||||
self.layout = layout_default
|
||||
else:
|
||||
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.devpath = devpath
|
||||
if not self.devpath:
|
||||
self.devpath = '/dev/md/{0}'.format(self.devname)
|
||||
self.updateStatus()
|
||||
self.homehost = homehost
|
||||
self.members = []
|
||||
self.state = None
|
||||
self.info = None
|
||||
|
||||
def addMember(self, memberobj):
|
||||
pass
|
||||
if not isinstance(memberobj, Member):
|
||||
raise ValueError('memberobj must be of type aif.disk.mdadm.Member')
|
||||
memberobj.prepare()
|
||||
self.members.append(memberobj)
|
||||
return()
|
||||
|
||||
def create(self):
|
||||
pass
|
||||
if not self.members:
|
||||
raise RuntimeError('Cannot create an array with no members')
|
||||
opts = [_BlockDev.ExtraArg.new('--homehost',
|
||||
self.homehost),
|
||||
_BlockDev.ExtraArg.new('--name',
|
||||
self.devname)]
|
||||
if self.layout:
|
||||
opts.append(_BlockDev.ExtraArg.new('--layout',
|
||||
self.layout))
|
||||
_BlockDev.md.create(self.devname,
|
||||
str(self.level),
|
||||
[i.devpath for i in self.members],
|
||||
0,
|
||||
self.metadata,
|
||||
True,
|
||||
(self.chunksize * 1024),
|
||||
opts)
|
||||
for m in self.members:
|
||||
m._parseDeviceBlock()
|
||||
self.updateStatus()
|
||||
self.writeConf()
|
||||
self.devpath = self.info['device']
|
||||
self.state = 'new'
|
||||
return()
|
||||
|
||||
def start(self, scan = False):
|
||||
pass
|
||||
if not any((self.members, self.devpath)):
|
||||
raise RuntimeError('Cannot assemble an array with no members (for hints) or device path')
|
||||
if scan:
|
||||
target = None
|
||||
else:
|
||||
target = self.devname
|
||||
_BlockDev.md.activate(target,
|
||||
[i.devpath for i in self.members], # Ignored if scan mode enabled
|
||||
None,
|
||||
True,
|
||||
None)
|
||||
self.state = 'assembled'
|
||||
return()
|
||||
|
||||
def stop(self):
|
||||
pass
|
||||
_BlockDev.md.deactivate(self.devname)
|
||||
self.state = 'disassembled'
|
||||
return()
|
||||
|
||||
def updateStatus(self):
|
||||
pass
|
||||
_status = _BlockDev.md.detail(self.devname)
|
||||
# TODO: parity with mdadm_fallback.Array.updateStatus
|
||||
# key names currently (probably) don't match and need to confirm the information's all present
|
||||
info = {}
|
||||
for k in dir(_status):
|
||||
if k.startswith('_'):
|
||||
continue
|
||||
elif k in ('copy',):
|
||||
continue
|
||||
v = getattr(_status, k)
|
||||
if k == 'level':
|
||||
v = int(re.sub(r'^raid', '', v))
|
||||
elif k == 'creation_time':
|
||||
# TODO: Is this portable/correct? Or do I need to do something like '%a %b %d %H:%M:%s %Y'?
|
||||
v = datetime.datetime.strptime(v, '%c')
|
||||
elif k == 'uuid':
|
||||
v = uuid.UUID(hex = v)
|
||||
info[k] = v
|
||||
self.info = info
|
||||
return()
|
||||
|
||||
def writeConf(self):
|
||||
pass
|
||||
def writeConf(self, conf = '/etc/mdadm.conf'):
|
||||
with open(conf, 'r') as fh:
|
||||
conflines = fh.read().splitlines()
|
||||
arrayinfo = ('ARRAY '
|
||||
'{device} '
|
||||
'metadata={metadata} '
|
||||
'name={name} '
|
||||
'UUID={converted_uuid}').format(**self.info,
|
||||
converted_uuid = _BlockDev.md.get_md_uuid(str(self.info['uuid'])))
|
||||
if arrayinfo not in conflines:
|
||||
r = re.compile(r'^ARRAY\s+{0}'.format(self.info['device']))
|
||||
nodev = True
|
||||
for l in conflines:
|
||||
if r.search(l):
|
||||
nodev = False
|
||||
# TODO: logging?
|
||||
# and/or Raise an exception here;
|
||||
# an array already exists with that name but not with the same opts/GUID/etc.
|
||||
break
|
||||
if nodev:
|
||||
with open(conf, 'a') as fh:
|
||||
fh.write('{0}\n'.format(arrayinfo))
|
||||
return()
|
||||
|
||||
@ -48,7 +48,8 @@ class Member(object):
|
||||
if super.returncode != 0:
|
||||
# TODO: logging?
|
||||
self.is_superblocked = False
|
||||
return(None)
|
||||
self.superblock = None
|
||||
return()
|
||||
block = {}
|
||||
for idx, line in enumerate(super.stdout.decode('utf-8').splitlines()):
|
||||
line = line.strip()
|
||||
@ -69,7 +70,7 @@ class Member(object):
|
||||
local_to = re.sub(r'[()]', '', local_to)
|
||||
v = (name, local_to)
|
||||
elif k == 'raid_level':
|
||||
v = re.sub(r'^raid', '', v)
|
||||
v = int(re.sub(r'^raid', '', v))
|
||||
elif k == 'checksum':
|
||||
cksum, status = [i.strip() for i in v.split('-')]
|
||||
v = (bytes.fromhex(cksum), status)
|
||||
@ -158,6 +159,8 @@ class Array(object):
|
||||
self.layout = None
|
||||
self.devname = self.xml.attrib['name']
|
||||
self.devpath = devpath
|
||||
if not self.devpath:
|
||||
self.devpath = '/dev/md/{0}'.format(self.devname)
|
||||
self.updateStatus()
|
||||
self.homehost = homehost
|
||||
self.members = []
|
||||
@ -175,6 +178,8 @@ class Array(object):
|
||||
if not self.members:
|
||||
raise RuntimeError('Cannot create an array with no members')
|
||||
cmd = ['mdadm', '--create',
|
||||
'--name={0}'.format(self.devname),
|
||||
'--bitmap=internal',
|
||||
'--level={0}'.format(self.level),
|
||||
'--metadata={0}'.format(self.metadata),
|
||||
'--chunk={0}'.format(self.chunksize),
|
||||
@ -187,6 +192,9 @@ class Array(object):
|
||||
cmd.append(m.devpath)
|
||||
# TODO: logging!
|
||||
subprocess.run(cmd)
|
||||
for m in self.members:
|
||||
m._parseDeviceBlock()
|
||||
self.updateStatus()
|
||||
self.writeConf()
|
||||
self.state = 'new'
|
||||
return()
|
||||
@ -202,6 +210,7 @@ class Array(object):
|
||||
cmd.append('--scan')
|
||||
# TODO: logging!
|
||||
subprocess.run(cmd)
|
||||
self.updateStatus()
|
||||
self.state = 'assembled'
|
||||
return()
|
||||
|
||||
|
||||
Loading…
Reference in New Issue
Block a user