Kickstart installation do not work when moving from LVM on top of software raid to plain software raid.

Solution Verified - Updated -

Environment

  • Red Hat Enterprise Linux 5.8

Issue

During re-installation and moving from LVM on top of software raid to plain software raid we see the following error and installation stops:

From the anaconda.log

22:44:42 CRITICAL: Traceback (most recent call first):
  File "/usr/lib/anaconda/partRequests.py", line 811, in getDevice
    if (r.size > 0) or (r.device is not None):
  File "/usr/lib/anaconda/partRequests.py", line 202, in toEntry
    device = self.getDevice(partitions)
  File "/usr/lib/anaconda/partitioning.py", line 124, in partitioningComplete
    entry = request.toEntry(anaconda.id.partitions)
  File "/usr/lib/anaconda/dispatch.py", line 207, in moveStep
    rc = stepFunc(self.anaconda)
  File "/usr/lib/anaconda/dispatch.py", line 130, in gotoNext
    self.moveStep()
  File "/usr/lib/anaconda/dispatch.py", line 229, in currentStep
    self.gotoNext()
  File "/usr/lib/anaconda/text.py", line 677, in run
    (step, instance) = anaconda.dispatch.currentStep()
  File "/usr/bin/anaconda", line 980, in ?
    anaconda.intf.run(anaconda)
AttributeError: 'NoneType' object has no attribute 'size'

The partition section from the kickstart configuration file changed in the following way:

part raid.31 --size=12805 --asprimary --onpart=sda1
part raid.32 --size=12805 --asprimary --onpart=sdb1
#raid pv.01 --device=md3 --level=1 raid.31 raid.32
raid /sw --device=md3 --fstype=ext3 --level=1 raid.31 raid.32

#volgroup vg pv.01  
#logvol /data --vgname=vg --name=data --size=40960 --fstype=ext3 --fsoptions="acl,user_xattr,noatime,nodiratime"
#logvol /sw   --vgname=apvg --name=sw   --size=8192  --fstype=ext3 --fsoptions="acl,user_xattr,noatime,nodiratime"

Resolution

Remove the LVM information from both legs of the software raid devices using:

# dd if=/dev/zero of=/dev/sdaX bs=512 count=10

Diagnostic Steps

From the anaconda.log the LVM information is present on the devices to be used.

22:44:41 DEBUG   : done starting mpaths.  Drivelist: ['sde', 'sdd', 'sda', 'sdb', 'sdc']
22:44:41 DEBUG   : adding drive sde to disk list
22:44:41 DEBUG   : adding drive sdd to disk list
22:44:41 DEBUG   : adding drive sda to disk list
22:44:41 DEBUG   : adding drive sdb to disk list
22:44:41 DEBUG   : adding drive sdc to disk list
22:44:41 DEBUG   : using preexisting size of 120800.0 for volume group vg
22:44:41 DEBUG   : using preexisting size of 120800.0 for volume group vg
22:44:41 INFO    : moving (1) to step partitiondone
22:44:42 INFO    : Running kickstart %%traceback script(s)
22:44:42 INFO    : All kickstart %%traceback script(s) have been run
22:44:42 CRITICAL: Traceback (most recent call first):
  File "/usr/lib/anaconda/partRequests.py", line 811, in getDevice

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