[CentOS] Re: Duplicate PV on HW RAID?

Eduardo Grosclaude eduardo.grosclaude at gmail.com
Tue Jul 29 14:21:41 UTC 2008


On Mon, Jul 28, 2008 at 6:15 PM, Scott Silva <ssilva at sgvwater.com> wrote:

> The machine BIOS correctly describes the RAID volume at start. Doesn't It
>> smell like fake RAID?
>> Should I declare sdb invalid to the firmware program so as to force
>> resync?
>> Thanks again
>> --
>>
> It sure looks as if it was originally a mirrored set, but broke later,
> maybe a kernel update no longer supports that fakeraid controller.


Indeed. A reboot later, everything was a mess. I rebuilt the RAID and
repeated the install.

Found that Disk Druid correctly sees the only device (referred to as
/mapper/isw_[10 seemingly hex digits]_Volume0, everything goes completely as
expected.

However, at the next boot the installed kernel no longer believes there's a
single device there, and goes like this:

  No RAID sets and with names 'isw_[same digits]_Volume0'
  failed to stat() /dev/mapper/isw_[same digits]_Volume0
  ...EXT3-fs errors...
  ...mounts failed....
  Kernel panic

My fault was not installing the proper Intel RAID driver for RHEL... the
regular kernel does not provide it.
Thanks very much for your help

-- 
Eduardo Grosclaude
Universidad Nacional del Comahue
Neuquen, Argentina
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