[Novalug] boot embarrassment : clue, please?

[Beartooth]

On Fri, 13 Feb 2009, Peter Larsen wrote:



>>  	Incidentally, that particular machine, designed as a 
>> server, has two hard drives, which were originally locked 
>> together to make one clone the other. I got my Friendly Local 
>> Alpha Plus Technoid (FLAP) to unlock that. So would /dev/sdb 
>> have worked??
>
> If it's a poweredge SC - you should have a raid controller in 
> there. I'm pretty sure you have a mirrored pair, in which case 
> to linux you have _one_ hard drive, /dev/sda - and you cannot 
> (at least not easily) address each drive of the mirrored pair 
> easily. The RAID controller makes sure both drives are in sync 
> with your updates.

 	I certainly had all that initially.

> If there's no raid controller you already have an /dev/sdb. 
> Check your dmesg output. It'll explain how many drives your 
> computer actually sees (do a search for sda - it'll bring you 
> to the section where it found sda
> - below it it would write about sdb if it found it and so on).

 	Do what sort of a search??

 	I did this :

=====		=====		=====		=====

[btth at BBB ~]$ dmesg|grep sdb
sd 3:0:0:0: [sdb] 312500000 512-byte hardware sectors (160000 MB)
sd 3:0:0:0: [sdb] Write Protect is off
sd 3:0:0:0: [sdb] Mode Sense: 00 3a 00 00
sd 3:0:0:0: [sdb] Write cache: enabled, read cache: enabled, 
doesn't support DPO
or FUA
sd 3:0:0:0: [sdb] 312500000 512-byte hardware sectors (160000 MB)
sd 3:0:0:0: [sdb] Write Protect is off
sd 3:0:0:0: [sdb] Mode Sense: 00 3a 00 00
sd 3:0:0:0: [sdb] Write cache: enabled, read cache: enabled, 
doesn't support DPO
or FUA
  sdb: sdb1
sd 3:0:0:0: [sdb] Attached SCSI disk
[btth at BBB ~]$ df -h
Filesystem            Size  Used Avail Use% Mounted on
/dev/mapper/VolGroup00-LogVol00
                       292G  5.7G  286G   2% /
/dev/sda1             190M   27M  154M  15% /boot
tmpfs                 505M   88K  504M   1% /dev/shm
[btth at BBB ~]$


 	=====		=====		=====		=====

 	So are they locked together, still mirroring one another? 
Or can I, as I think, use the whole 290 GB pretty much any way I 
want?

-- 
Beartooth Bookworm, Cantankerous Curmudgeon
I have never owned a television. Nor wanted to.