Re: [ILUG] SCSI ordering issues

From: Colin Whittaker (grimnar at domain redbrick.dcu.ie)
Date: Mon 23 Sep 2002 - 16:52:03 IST


Vincent Cunniffe stated the following on Mon, Sep 23, 2002 at 04:22:19PM +0100 :
> Colin Whittaker wrote:
> > Hi there,
> >
> > I have a del poweredge 2650 with 2 disks in it on the onboard adaptec
> > controller. Everthing was fine and dandy until we pluged an external
> > disk array into an adaptec PCI based cntroller.
> > We do software raid across these and even have lilo's raid support
> > working.
> >
> > Now when the kernel starts up it is seeing the array as /dev/sda and all
> > hell breaks loose.
> >
> > Any ideas on how to make things appear in the right
>
> 1. When the BIOS boot sequence flips through the second, offboard
> Adaptec controller, hit CTRL-A to get into the settings and switch
> off anything with the word 'boot' in it. Hopefully that'll get rid
> of it.
>
> 2. Examine the motherboard BIOS for any mention of 'boot offboard
> controllers first' or similar wording, and make sure that they're
> set to boot from the onboard SCSI first.

Issue wasn't boot order but the order in which the kernel would attach
the drives to device names.

appending "aic7xxx=reverse_scan" to the kernel's command line made
everything better.

Oh and for the record fdisk does really does not like devices larger
than 2TB, reported the disk as -8.something megs, partitoned it all the
same.

Oh and mkfs.xfs is very very fast.

/dev/sdc1 2.0T 1.5G 1.9T 1% /ftp

Colin

-- 
"Design" is like a religion - too much of it makes you inflexibly and unpopular.
		Linus Torvalds


This archive was generated by hypermail 2.1.6 : Thu 06 Feb 2003 - 13:19:01 GMT