Re: Mounting problem with Knoppix-5.0.1
Hi Klaus,
> Actually, you (or rather the guy who sold you that computer) must have
> configured this harddisk once as part of a softraid raid array (not
> "software raid", but the kind of non-hardware-raid that Promise and
> others sell as "onboard raid controller").
That is true, I have an Asus P4PE mainboard that has a Promise controller.
Output of lspci:
-------------
0000:02:04.0 RAID bus controller: Promise Technology, Inc. PDC20376 (FastTrak
376) (rev 02)
-------------
That is where my SATA harddrive is attached to. So this is a RAID with a
single hard disk (called "1+0 Stripe").
> Do a quick check with "dmraid -r".
# dmraid -r
/dev/sda: pdc, "pdc_cfgjbgfb", stripe, ok, 488397056 sectors, data@ 0
> So, Knoppix' behaviour is actually CORRECT here for the first time. ;-)
And protects me from my very own harddisk for the first time, too :-)
> A) Remove the Softraid signature from the disk. I have no experience with
> this, though, so I'm recommending a full backup of all valuable data
> before attempting a "dmraid -E".
Ouch, I really don't feel like backing up 200 GByte right now just to try one
command.
> B) Boot with "knoppix noideraid", which skips softraid detection. Of
> course, it is more inconvenient to enter that option every time you boot
> Knoppix.
I tested this and it works. But fiddling with boot options is a big PITA.
> What does /proc/partitions say?
$ cat /proc/partitions
major minor #blocks name
8 0 244198584 sda
8 1 10482381 sda1
8 2 1951897 sda2
8 3 9767520 sda3
8 4 1 sda4
8 5 9767488 sda5
8 6 9767488 sda6
8 7 9767488 sda7
8 8 9767488 sda8
8 9 182924091 sda9
240 0 1991680 cloop0
254 0 244198528 dm-0
254 1 10482381 dm-1
254 2 1951897 dm-2
254 3 9767520 dm-3
254 4 9767488 dm-4
254 5 9767488 dm-5
254 6 9767488 dm-6
254 7 9767488 dm-7
254 8 182924091 dm-8
> Does /dev/mapper/pdc_cfgjbgfb9 show up when you boot "normally" (i.e.
> without "noideraid")? Is /media/pdc_cfgjbgfb9 there?
Yes, both are there after standard boot.
Klaus, thank you very much for your hard work. I am remastering Knoppix for
Swiss schools (http://campus.ph-solothurn.ch/ICT/LinuxInDerSchule, direct
download link
http://campus.ph-solothurn.ch/pub/ICT/LinuxInDerSchule/phso_20060506.iso) and
it would be fantastic to run this system without scaring the kids away with
boot options.
Greetings & many thanks
Ronny
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