X-Git-Url: http://git.onelab.eu/?a=blobdiff_plain;f=source%2Fsteps%2FInstallPartitionDisks.py;h=e04a31943b29d9daf1154eb8f3cd3cea32539c54;hb=14a1b7b57c7d4e4ec898ee421d6ce5dba046ca7c;hp=5bafb9fd9b10e8e6cbd9df086aec9f00882569ab;hpb=373ed1b705da6b5eb52295d4215857ff923f0815;p=bootmanager.git diff --git a/source/steps/InstallPartitionDisks.py b/source/steps/InstallPartitionDisks.py index 5bafb9f..e04a319 100644 --- a/source/steps/InstallPartitionDisks.py +++ b/source/steps/InstallPartitionDisks.py @@ -1,5 +1,5 @@ #!/usr/bin/python - +# # Copyright (c) 2003 Intel Corporation # All rights reserved. # @@ -10,12 +10,12 @@ import os, sys import string import popen2 - +import time from Exceptions import * import utils import BootServerRequest - +import BootAPI import ModelOptions def Run( vars, log ): @@ -57,7 +57,7 @@ def Run( vars, log ): if NODE_MODEL_OPTIONS & ModelOptions.RAWDISK: VSERVERS_SIZE= "-1" - if "VSERVER_SIZE" in vars: + if "VSERVERS_SIZE" in vars: VSERVERS_SIZE= vars["VSERVERS_SIZE"] if VSERVERS_SIZE == "" or VSERVERS_SIZE == 0: raise ValueError, "VSERVERS_SIZE" @@ -80,7 +80,7 @@ def Run( vars, log ): utils.sysexec_noerr( "lvremove -f %s" % PARTITIONS["swap"], log ) utils.sysexec_noerr( "lvremove -f %s" % PARTITIONS["vservers"], log ) utils.sysexec_noerr( "vgchange -an", log ) - utils.sysexec_noerr( "vgremove planetlab", log ) + utils.sysexec_noerr( "vgremove -f planetlab", log ) log.write( "Running vgscan for devices\n" ) utils.sysexec_noerr( "vgscan", log ) @@ -104,15 +104,22 @@ def Run( vars, log ): # list of devices to be used with vgcreate vg_device_list= "" - # initialize the physical volumes + # get partitions + partitions = [] for device in used_devices: - part_path= get_partition_path_from_device( device, vars, log ) - + partitions.append(part_path) + + # create raid partition + raid_partition = create_raid_partition(partitions, vars, log) + if raid_partition != None: + partitions = [raid_partition] + log.write("PARTITIONS %s\n" % str(partitions)) + # initialize the physical volumes + for part_path in partitions: if not create_lvm_physical_volume( part_path, vars, log ): raise BootManagerException, "Could not create lvm physical volume " \ "on partition %s" % part_path - vg_device_list = vg_device_list + " " + part_path # create an lvm volume group @@ -139,7 +146,7 @@ def Run( vars, log ): #utils.sysexec( TEMP_PATH + "vgchange -ay planetlab", log ) # make swap - utils.sysexec( "mkswap %s" % PARTITIONS["swap"], log ) + utils.sysexec( "mkswap -f %s" % PARTITIONS["swap"], log ) # check if badhd option has been set option = '' @@ -160,6 +167,10 @@ def Run( vars, log ): log.write("formatting %s partition (%s)%s.\n" % (fs,devname,txt)) utils.sysexec( "mkfs.ext2 -q %s -m %d -j %s" % (option,rbp,devname), log ) + # disable time/count based filesystems checks + for filesystem in ("root","vservers"): + utils.sysexec_noerr( "tune2fs -c -1 -i 0 %s" % PARTITIONS[filesystem], log) + # save the list of block devices in the log log.write( "Block devices used (in lvm): %s\n" % repr(used_devices)) @@ -169,7 +180,7 @@ def Run( vars, log ): return 1 - +import parted def single_partition_device( device, vars, log ): """ initialize a disk by removing the old partition tables, @@ -178,11 +189,28 @@ def single_partition_device( device, vars, log ): return 1 if sucessful, 0 otherwise """ - import parted + # two forms, depending on which version of pyparted we have + # v1 does not have a 'version' method + # v2 and above does, but to make it worse, + # parted-3.4 on f14 has parted.version broken and raises SystemError + try: + parted.version() + return single_partition_device_2_x (device, vars, log) + except AttributeError: + # old parted does not have version at all + return single_partition_device_1_x (device, vars, log) + except SystemError: + # let's assume this is >=2 + return single_partition_device_2_x (device, vars, log) + except: + raise + +def single_partition_device_1_x ( device, vars, log): lvm_flag= parted.partition_flag_get_by_name('lvm') try: + log.write("Using pyparted 1.x\n") # wipe the old partition table utils.sysexec( "dd if=/dev/zero of=%s bs=512 count=1" % device, log ) @@ -223,6 +251,53 @@ def single_partition_device( device, vars, log ): +def single_partition_device_2_x ( device, vars, log): + try: + log.write("Using pyparted 2.x\n") + # wipe the old partition table + utils.sysexec( "dd if=/dev/zero of=%s bs=512 count=1" % device, log ) + # get the device + dev= parted.Device(device) + # create a new partition table + # xxx -- Thierry june 2012 + # original code was going for the msdos version only + # Marco Bicudo reported an error with a disk larger than 2TB + # and confirmed he node would take off by just changing 'msdos' into 'gpt' + # this version below has been tried but does not work + # as a matter of fact on the big node an exception gets thrown later + # at the maximizePartition stage only, which of course makes sense + # so bottom line is, we need to find something smarter... + # xxx + try: + disk= parted.freshDisk(dev,'msdos') + # use gpt as a fallback for disks larger than 2TB + except: + disk= parted.freshDisk(dev,'gpt') + # create one big partition on each block device + constraint= parted.constraint.Constraint (device=dev) + geometry = parted.geometry.Geometry (device=dev, start=0, end=1) + fs = parted.filesystem.FileSystem (type="ext2",geometry=geometry) + new_part= parted.partition.Partition (disk, type=parted.PARTITION_NORMAL, + fs=fs, geometry=geometry) + # make it an lvm partition + new_part.setFlag(parted.PARTITION_LVM) + # actually add the partition to the disk + disk.addPartition(new_part, constraint) + disk.maximizePartition(new_part,constraint) + disk.commit() + print >>log, 'Current disk for %s'%device,disk + print >>log, 'Current dev for %s'%device,dev + del disk + except Exception, e: + log.write( "Exception inside single_partition_device_2_x : %s\n" % str(e) ) + import traceback + traceback.print_exc(file=log) + return 0 + + return 1 + + + def create_lvm_physical_volume( part_path, vars, log ): """ make the specificed partition a lvm physical volume. @@ -244,6 +319,53 @@ def create_lvm_physical_volume( part_path, vars, log ): return 1 +def create_raid_partition(partitions, vars, log): + """ + create raid array using specified partitions. + """ + raid_part = None + raid_enabled = False + node_tags = BootAPI.call_api_function( vars, "GetNodeTags", + ({'node_id': vars['NODE_ID']},)) + for node_tag in node_tags: + if node_tag['tagname'] == 'raid_enabled' and \ + node_tag['value'] == '1': + raid_enabled = True + break + if not raid_enabled: + return raid_part + + try: + log.write( "Software raid enabled.\n" ) + # wipe everything + utils.sysexec_noerr("mdadm --stop /dev/md0", log) + time.sleep(1) + for part_path in partitions: + utils.sysexec_noerr("mdadm --zero-superblock %s " % part_path, log) + + # assume each partiton is on a separate disk + num_parts = len(partitions) + if num_parts < 2: + log.write( "Not enough disks for raid. Found: %s\n" % partitions ) + raise BootManagerException("Not enough disks for raid. Found: %s\n" % partitions) + if num_parts == 2: + lvl = 1 + else: + lvl = 5 + + # make the array + part_list = " ".join(partitions) + raid_part = "/dev/md0" + cmd = "mdadm --create %(raid_part)s --chunk=128 --level=raid%(lvl)s " % locals() + \ + "--raid-devices=%(num_parts)s %(part_list)s" % locals() + utils.sysexec(cmd, log) + + except BootManagerException, e: + log.write("create_raid_partition failed.\n") + raid_part = None + + return raid_part + def get_partition_path_from_device( device, vars, log ): """