[arch-general] dmraid-1.0.0rc15 in testing, need you help on this!

[David C. Rankin]

On Monday 22 June 2009 03:13:41 am Tobias Powalowski wrote:
> I need to explain this a bit more:
>
> If you start with empty disks, eg. 2 disks
> I put them together in bios of raid controller.
> After booting install media, which runs dmraid -ay during boot process, i
> get something like that:
> /dev/mapper/nvidia_fffadgic
> because no partitions are there.
>

Tobias, that's correct. I put them together in the bios, and then I just 
partition them as normal when the Arch installer ask me what partitions I 
want.

> Now i cfdisk this device, are the nodes updated then?
> - I mean do i get the /dev/mapper/vidia_fffadgicp1 p2 p3 autimatically or
> do I need to run dmraid -ay for every partition i created?

That - I don't know. I know that all the nodes were updated during the 1st 
boot after upgrading to 1.0.15rc, but I haven't looked since. Next time I'm at 
the machine, I'll boot and see. I think you will need to run dmraid -y each 
time, but I will confirm.

> - Also what happens if partitions are deleted?

I haven't tried that yet. Remarkably, cfdisk  doesn't show the 'p' anywhere in 
the partition listing. So it looks like the 'p' is strictly a creature of 
dmraid:

                                       cfdisk (util-linux-ng 2.14.2)

                                  Disk Drive: /dev/mapper/nvidia_ecaejfdi
                                     Size: 750156372992 bytes, 750.1 GB
                           Heads: 255   Sectors per Track: 63   Cylinders: 
91201

     Name            Flags          Part Type      FS Type               
[Label]             Size (MB)
 ----------------------------------------------------------------------------------------------------------
     nvidia_ecaejfdi5Boot            Logical       Linux ext3                                 
20003.85     *
     nvidia_ecaejfdi6                Logical       Linux ext3                                   
123.38
     nvidia_ecaejfdi7                Logical       Linux ext3                                 
39999.54
     nvidia_ecaejfdi8                Logical       Linux swap / Solaris                        
1998.75
                                     Pri/Log       Free Space                                
688028.23



>
> Thanks for some enlightment.
> greetings
> tpowa

-- 
David C. Rankin, J.D.,P.E.
Rankin Law Firm, PLLC
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