Problem Installing FC 6 Final on LVs over software raid

[Clyde E. Kunkel]

Clyde E. Kunkel wrote:
> Michal Jaegermann wrote:
> <snip>
> 
>> These two sentences above togeher sound somewhat strange to me.
>> Maybe somebody with a better than mine grasp of all technical
>> details here can comment?  Is this inability to find RAID disks
>> possibly your problem if an array should show up?  It sounds like
>> something else than what I suggested as a possibility.
>>
>> In any case - those signatures are on "closer to the metal"
>> devices, like /dev/hda and similar and not on /dev/md...',
>> and with 'dmraid -r' you should see something of that sort:
>>
>> /dev/sdb: pdc, "pdc_cjfeejidea", stripe, ok .....
>>
>> if they are really present.
>>
>>> Would
>>>
>>> mdadm --zero-superblock /dev/md1
>>>
>>> work?
>>
>> If you are asking if this will have effects you desire then
>> I have no idea. :-)
>>
>>    Michal
>>
> 
> Must be something else then because:
> 
> [root at P4C800Deluxe ~]# dmraid -r
> No RAID disks
> [root at P4C800Deluxe ~]# mdadm --detail /dev/md* | egrep '/dev|Level|State'
> /dev/md0:
>      Raid Level : raid5
>           State : clean
>     Number   Major   Minor   RaidDevice State
>        0       8       33        0      active sync   /dev/sdc1
>        1       8       49        1      active sync   /dev/sdd1
>        2       8        1        2      active sync   /dev/sda1
> /dev/md1:
>      Raid Level : raid5
>           State : clean
>     Number   Major   Minor   RaidDevice State
>        0       8       34        0      active sync   /dev/sdc2
>        1       8       50        1      active sync   /dev/sdd2
>        2       8       17        2      active sync   /dev/sdb1
> /dev/md2:
>      Raid Level : raid1
>           State : clean
>     Number   Major   Minor   RaidDevice State
>        0       8       35        0      active sync   /dev/sdc3
>        1       8       51        1      active sync   /dev/sdd3
> [root at P4C800Deluxe ~]#
> 
> Thanks for your interest...you have given something else to investigate. 
>  And, perhaps, as you say, someone else will take an interest and 
> provide some clues or some debugging avenues.


Just to close this out, I rebuilt /dev/md1 from within a non-raid non-LV 
incarnation of FC6, restored the VG, and started from scratch.  No 
problems any longer, but cannot debug the original issue as whatever was 
causing /dev/md1 to be seen as foreign no longer exists.

-- 
Regards,

Old Fart
(my reply-to address is "munged" to defeat spambots)