import os, sys
import string
import popen2
-
+import time
from Exceptions import *
import utils
import BootServerRequest
-
+import BootAPI
import ModelOptions
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
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 ):
"""