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This commit is contained in:
brent s. 2019-12-23 15:43:23 -05:00
parent c165e60d34
commit a0442df77d
2 changed files with 39 additions and 17 deletions
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54
aif/disk/mdadm.py
View File

@ -1,8 +1,11 @@
import datetime
import logging
import os
import re
import uuid
##
from lxml import etree
##
import aif.utils
import aif.constants
from . import _common
@ -11,24 +14,29 @@ import aif.disk.luks as luks
import aif.disk.lvm as lvm


_logger = logging.getLogger(__name__)


_BlockDev = _common.BlockDev


class Member(object):
def __init__(self, member_xml, partobj):
self.xml = member_xml
_logger.debug('member_xml: {0}'.format(etree.tostring(self.xml, with_tail = False).decode('utf-8')))
self.device = partobj
if not isinstance(self.device, (block.Disk,
block.Partition,
Array,
luks.LUKS,
lvm.LV)):
raise ValueError(('partobj must be of type '
'aif.disk.block.Disk, '
'aif.disk.block.Partition, '
'aif.disk.luks.LUKS, '
'aif.disk.lvm.LV, or'
'aif.disk.mdadm.Array'))
_logger.error(('partobj must be of type '
'aif.disk.block.Disk, '
'aif.disk.block.Partition, '
'aif.disk.luks.LUKS, '
'aif.disk.lvm.LV, or'
'aif.disk.mdadm.Array.'))
raise ValueError('Invalid partobj type')
_common.addBDPlugin('mdraid')
self.devpath = self.device.devpath
self.is_superblocked = None
@ -36,12 +44,14 @@ class Member(object):
self._parseDeviceBlock()

def _parseDeviceBlock(self):
_logger.info('Parsing {0} device block metainfo.'.format(self.devpath))
# 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:
_logger.debug('Member device is not a member yet.')
self.is_superblocked = False
self.superblock = None
return(None)
@ -59,6 +69,7 @@ class Member(object):
v = uuid.UUID(hex = v)
block[k] = v
self.superblock = block
_logger.debug('Rendered superblock info: {0}'.format(block))
self.is_superblocked = True
return(None)

@ -75,26 +86,33 @@ class Member(object):
class Array(object):
def __init__(self, array_xml, homehost, devpath = None):
self.xml = array_xml
_logger.debug('array_xml: {0}'.format(etree.tostring(array_xml, with_tail = False).decode('utf-8')))
self.id = self.xml.attrib['id']
self.level = int(self.xml.attrib['level'])
if self.level not in aif.constants.MDADM_SUPPORTED_LEVELS:
raise ValueError('RAID level must be one of: {0}'.format(', '.join([str(i)
for i in
aif.constants.MDADM_SUPPORTED_LEVELS])))
_logger.error(('RAID level ({0}) must be one of: '
'{1}.').format(self.level,
', '.join([str(i) for i in aif.constants.MDADM_SUPPORTED_LEVELS])))
raise ValueError('Invalid RAID level')
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)))
_logger.error(('Metadata version ({0}) must be one of: '
'{1}.').format(self.metadata, ', '.join(aif.constants.MDADM_SUPPORTED_METADATA)))
raise ValueError('Invalid metadata version')
_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')
# TODO: warn instead of raise exception? Will mdadm lose its marbles if it *isn't* a proper number?
_logger.error('Chunksize ({0}) must be a power of 2 for RAID level {1}.'.format(self.chunksize,
self.level))
raise ValueError('Invalid chunksize')
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')
# TODO: warn instead of raise exception? Will mdadm lose its marbles if it *isn't* a proper number?
_logger.error('Chunksize ({0}) must be divisible by 4 for RAID level {1}'.format(self.chunksize,
self.level))
raise ValueError('Invalid chunksize')
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]
@ -102,7 +120,8 @@ class Array(object):
if layout_default:
self.layout = layout_default
else:
self.layout = None # TODO: log.warn?
_logger.warning('Did not detect a valid layout.')
self.layout = None
else:
self.layout = None
self.name = self.xml.attrib['name']
@ -118,7 +137,8 @@ class Array(object):

def addMember(self, memberobj):
if not isinstance(memberobj, Member):
raise ValueError('memberobj must be of type aif.disk.mdadm.Member')
_logger.error('memberobj must be of type aif.disk.mdadm.Member.')
raise TypeError('Invalid memberobj type')
memberobj.prepare()
self.members.append(memberobj)
return(None)

2
aif/disk/mdadm_fallback.py
View File

@ -1,11 +1,13 @@
import copy
import datetime
import logging
import os
import re
import subprocess
import uuid
##
import mdstat
from lxml import etree
##
import aif.disk.block_fallback as block
import aif.disk.luks_fallback as luks