--- /dev/null
+#!/usr/bin/python
+#
+# Copyright (c) 2003 Intel Corporation
+# All rights reserved.
+#
+# Copyright (c) 2004-2006 The Trustees of Princeton University
+# All rights reserved.
+# expected /proc/partitions format
+
+import os, sys
+import string
+import popen2
+import time
+
+from Exceptions import *
+import utils
+import BootServerRequest
+import BootAPI
+import ModelOptions
+
+def Run( vars, log ):
+ """
+ Setup the block devices for install, partition them w/ LVM
+
+ Expect the following variables from the store:
+ INSTALL_BLOCK_DEVICES list of block devices to install onto
+ TEMP_PATH somewhere to store what we need to run
+ ROOT_SIZE the size of the root logical volume
+ SWAP_SIZE the size of the swap partition
+ """
+
+ log.write( "\n\nStep: Install: partitioning disks.\n" )
+
+ # make sure we have the variables we need
+ try:
+ TEMP_PATH= vars["TEMP_PATH"]
+ if TEMP_PATH == "":
+ raise ValueError, "TEMP_PATH"
+
+ INSTALL_BLOCK_DEVICES= vars["INSTALL_BLOCK_DEVICES"]
+ if( len(INSTALL_BLOCK_DEVICES) == 0 ):
+ raise ValueError, "INSTALL_BLOCK_DEVICES is empty"
+
+ ROOT_SIZE= vars["ROOT_SIZE"]
+ if ROOT_SIZE == "" or ROOT_SIZE == 0:
+ raise ValueError, "ROOT_SIZE invalid"
+
+ SWAP_SIZE= vars["SWAP_SIZE"]
+ if SWAP_SIZE == "" or SWAP_SIZE == 0:
+ raise ValueError, "SWAP_SIZE invalid"
+
+ NODE_MODEL_OPTIONS= vars["NODE_MODEL_OPTIONS"]
+
+ PARTITIONS= vars["PARTITIONS"]
+ if PARTITIONS == None:
+ raise ValueError, "PARTITIONS"
+
+ if NODE_MODEL_OPTIONS & ModelOptions.RAWDISK:
+ VSERVERS_SIZE= "-1"
+ if "VSERVERS_SIZE" in vars:
+ VSERVERS_SIZE= vars["VSERVERS_SIZE"]
+ if VSERVERS_SIZE == "" or VSERVERS_SIZE == 0:
+ raise ValueError, "VSERVERS_SIZE"
+
+ except KeyError, var:
+ raise BootManagerException, "Missing variable in vars: %s\n" % var
+ except ValueError, var:
+ raise BootManagerException, "Variable in vars, shouldn't be: %s\n" % var
+
+ bs_request= BootServerRequest.BootServerRequest(vars)
+
+
+ # disable swap if its on
+ utils.sysexec_noerr( "swapoff %s" % PARTITIONS["swap"], log )
+
+ # shutdown and remove any lvm groups/volumes
+ utils.sysexec_noerr( "vgscan", log )
+ utils.sysexec_noerr( "vgchange -ay", log )
+ utils.sysexec_noerr( "lvremove -f %s" % PARTITIONS["root"], 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 -f planetlab", log )
+
+ log.write( "Running vgscan for devices\n" )
+ utils.sysexec_noerr( "vgscan", log )
+
+ used_devices= []
+
+ INSTALL_BLOCK_DEVICES.sort()
+ for device in INSTALL_BLOCK_DEVICES:
+
+ if single_partition_device( device, vars, log ):
+ if (len(used_devices) > 0 and
+ (vars['NODE_MODEL_OPTIONS'] & ModelOptions.RAWDISK)):
+ log.write( "Running in raw disk mode, not using %s.\n" % device )
+ else:
+ used_devices.append( device )
+ log.write( "Successfully initialized %s\n" % device )
+ else:
+ log.write( "Unable to partition %s, not using it.\n" % device )
+ continue
+
+ # list of devices to be used with vgcreate
+ vg_device_list= ""
+
+ # 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
+ utils.sysexec( "vgcreate -s32M planetlab %s" % vg_device_list, log)
+
+ # create swap logical volume
+ utils.sysexec( "lvcreate -L%s -nswap planetlab" % SWAP_SIZE, log )
+
+ # create root logical volume
+ utils.sysexec( "lvcreate -L%s -nroot planetlab" % ROOT_SIZE, log )
+
+ if vars['NODE_MODEL_OPTIONS'] & ModelOptions.RAWDISK and VSERVERS_SIZE != "-1":
+ utils.sysexec( "lvcreate -L%s -nvservers planetlab" % VSERVERS_SIZE, log )
+ remaining_extents= get_remaining_extents_on_vg( vars, log )
+ utils.sysexec( "lvcreate -l%s -nrawdisk planetlab" % remaining_extents, log )
+ else:
+ # create vservers logical volume with all remaining space
+ # first, we need to get the number of remaining extents we can use
+ remaining_extents= get_remaining_extents_on_vg( vars, log )
+
+ utils.sysexec( "lvcreate -l%s -nvservers planetlab" % remaining_extents, log )
+
+ # activate volume group (should already be active)
+ #utils.sysexec( TEMP_PATH + "vgchange -ay planetlab", log )
+
+ # make swap
+ utils.sysexec( "mkswap -f %s" % PARTITIONS["swap"], log )
+
+ # check if badhd option has been set
+ option = ''
+ txt = ''
+ if NODE_MODEL_OPTIONS & ModelOptions.BADHD:
+ option = '-c'
+ txt = " with bad block search enabled, which may take a while"
+
+ # filesystems partitions names and their corresponding
+ # reserved-blocks-percentages
+ filesystems = {"root":5,"vservers":0}
+
+ # make the file systems
+ for fs in filesystems.keys():
+ # get the reserved blocks percentage
+ rbp = filesystems[fs]
+ devname = PARTITIONS[fs]
+ 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))
+
+ # list of block devices used may be updated
+ vars["INSTALL_BLOCK_DEVICES"]= used_devices
+
+ return 1
+
+
+import parted
+def single_partition_device( device, vars, log ):
+ """
+ initialize a disk by removing the old partition tables,
+ and creating a new single partition that fills the disk.
+
+ return 1 if sucessful, 0 otherwise
+ """
+
+ # 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 )
+
+ # get the device
+ dev= parted.PedDevice.get(device)
+
+ # create a new partition table
+ disk= dev.disk_new_fresh(parted.disk_type_get("msdos"))
+
+ # create one big partition on each block device
+ constraint= dev.constraint_any()
+
+ new_part= disk.partition_new(
+ parted.PARTITION_PRIMARY,
+ parted.file_system_type_get("ext2"),
+ 0, 1 )
+
+ # make it an lvm partition
+ new_part.set_flag(lvm_flag,1)
+
+ # actually add the partition to the disk
+ disk.add_partition(new_part, constraint)
+
+ disk.maximize_partition(new_part,constraint)
+
+ disk.commit()
+ del disk
+
+ except BootManagerException, e:
+ log.write( "BootManagerException while running: %s\n" % str(e) )
+ return 0
+
+ except parted.error, e:
+ log.write( "parted exception while running: %s\n" % str(e) )
+ return 0
+
+ return 1
+
+
+
+def single_partition_device_2_x ( device, vars, log):
+ try:
+ log.write("Using pyparted 2.x\n")
+
+ # Thierry june 2012 -- for disks larger than 2TB
+ # calling this with part_type='msdos' would fail at the maximizePartition stage
+ # create a new partition table
+ def partition_table (device, part_type, fs_type):
+ # 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)
+ disk = parted.freshDisk(dev,part_type)
+ # 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=fs_type,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()
+ log.write ("Current disk for %s - partition type %s\n%s\n"%(device,part_type,disk))
+ log.write ("Current dev for %s\n%s\n"%(device,dev))
+ del disk
+
+ try:
+ partition_table (device, 'msdos', 'ext2')
+ except:
+ partition_table (device, 'gpt', 'ext2')
+
+ 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.
+
+ return 1 if successful, 0 otherwise.
+ """
+
+ try:
+ # again, wipe any old data, this time on the partition
+ utils.sysexec( "dd if=/dev/zero of=%s bs=512 count=1" % part_path, log )
+ ### patch Thierry Parmentelat, required on some hardware
+ import time
+ time.sleep(1)
+ utils.sysexec( "pvcreate -ffy %s" % part_path, log )
+ except BootManagerException, e:
+ log.write( "create_lvm_physical_volume failed.\n" )
+ return 0
+
+ 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 ):
+ """
+ given a device, return the path of the first partition on the device
+ """
+
+ # those who wrote the cciss driver just had to make it difficult
+ cciss_test= "/dev/cciss"
+ if device[:len(cciss_test)] == cciss_test:
+ part_path= device + "p1"
+ else:
+ part_path= device + "1"
+
+ return part_path
+
+
+
+def get_remaining_extents_on_vg( vars, log ):
+ """
+ return the free amount of extents on the planetlab volume group
+ """
+
+ c_stdout, c_stdin = popen2.popen2("vgdisplay -c planetlab")
+ result= string.strip(c_stdout.readline())
+ c_stdout.close()
+ c_stdin.close()
+ remaining_extents= string.split(result,":")[15]
+
+ return remaining_extents
git://git.onelab.eu / bootmanager.git / blobdiff