[CentOS] anaconda in centOS 4 fails to read md raid arrays

Johnny Hughes mailing-lists at hughesjr.com
Mon Jun 6 10:35:05 UTC 2005


On Mon, 2005-06-06 at 16:05 +0800, Feizhou wrote:
> Has anybody encountered this problem?
> 
> I have a box that has FC2 installed. I wanted to trash the FC2 
> installation and install CentOS 4.
> 
> I have a pxeboot/dhcp/kickstart environment and so I tried automatic 
> disk partitioning (clear all partitions and then create new ones), 
> manual disk partitioning but everything else is automated and finally, 
> zero automation, just a manual installation through VNC.
> 
> Once I reach a part that touchs disk, the process will stop and end up with:
> 
>   Traceback (most recent call last):
>    File "/var/tmp/anaconda-10.1.1.13//usr/lib/anaconda/gui.py", line 
> 789, in nextClicked
>      self.dispatch.gotoNext()
>    File "/var/tmp/anaconda-10.1.1.13//usr/lib/anaconda/dispatch.py", 
> line 171, in gotoNext
>      self.moveStep()
>    File "/var/tmp/anaconda-10.1.1.13//usr/lib/anaconda/dispatch.py", 
> line 239, in moveStep
>      rc = apply(func, self.bindArgs(args))
>    File "/var/tmp/anaconda-10.1.1.13//usr/lib/anaconda/partitioning.py", 
> line 54, in partitionObjectsInitialize
>      partitions.setFromDisk(diskset)
>    File "/var/tmp/anaconda-10.1.1.13//usr/lib/anaconda/partitions.py", 
> line 140, in setFromDisk
>      diskset.startAllRaid()
>    File "/var/tmp/anaconda-10.1.1.13//usr/lib/anaconda/partedUtils.py", 
> line 542, in startAllRaid
>      DiskSet.mdList.extend(raid.startAllRaid(driveList))
>    File "/var/tmp/anaconda-10.1.1.13//usr/lib/anaconda/raid.py", line 
> 106, in startAllRaid
>      mdList = scanForRaid(driveList)
>    File "/var/tmp/anaconda-10.1.1.13//usr/lib/anaconda/raid.py", line 
> 56, in scanForRaid
>      (major, minor, raidSet, level, nrDisks, totalDisks, mdMinor) =\
>    File "/usr/lib/anaconda/isys.py", line 97, in raidsb
>      return raidsbFromDevice("/tmp/md")
>    File "/usr/lib/anaconda/isys.py", line 103, in raidsbFromDevice
>      rc = _isys.getraidsb(fd)
> SystemError: (5, 'Input/output error')

I had a similar problem with a ppc install on RHEL. I think (but I am
not 100% positive) that it is a LVM1 / LVM2 compatibility issue. 

What I had to do was use fdisk and wipe the partitions and then I
recreated them in anaconda using the raid and lvm tools in anaconda.  

I have never actually had that problem on CentOS-4, but it is the same
code, so I'm sure it happens in C4 too.
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