RE: fedora-s390x Digest, Vol 7, Issue 3

[Bernie VK2KAD]

Hi all

Can anyone tell me how to add more DASD to the Hercules version of
Fedora11??

I was wanting to use Fedora11 as a rescue system for one of my other
zLinux's - my plan was to add the DASD image to the Hercules config file -
after IPL I should be able to mount the broken disk and fix it...

After doing this the new devices wasn't detected ??   A quick Google said
that 'kuzdu' didn't recognise HDDs - not sure what that all means but my
suspicion is that the Fedora11 is pretty new and bare bones.

Thanks in advance for any suggestions.

Bern

fedora-s390x Digest, Vol 7, Issue 3

[Dan Horák]

Bernie VK2KAD píše v St 08. 07. 2009 v 15:17 +1000:
> Hi all
>
> Can anyone tell me how to add more DASD to the Hercules version of
> Fedora11??
>
> I was wanting to use Fedora11 as a rescue system for one of my other
> zLinux's - my plan was to add the DASD image to the Hercules config file -
> after IPL I should be able to mount the broken disk and fix it...
>
> After doing this the new devices wasn't detected ??   A quick Google said
> that 'kuzdu' didn't recognise HDDs - not sure what that all means but my
> suspicion is that the Fedora11 is pretty new and bare bones.

You will need to specify all DASDs in /etc/modprobe.conf (you should
have "options dasd_mod dasd=..." there) and regenerate the init ramdisk
with mkinitrd.

Dan

fedora-s390x Digest, Vol 7, Issue 3

[Phil Knirsch]

On 07/09/2009 02:11 PM, Dan Horák wrote:
> Bernie VK2KAD píše v St 08. 07. 2009 v 15:17 +1000:
> > Hi all
> >
> > Can anyone tell me how to add more DASD to the Hercules version of
> > Fedora11??
> >
> > I was wanting to use Fedora11 as a rescue system for one of my other
> > zLinux's - my plan was to add the DASD image to the Hercules config file -
> > after IPL I should be able to mount the broken disk and fix it...
> >
> > After doing this the new devices wasn't detected ??   A quick Google said
> > that 'kuzdu' didn't recognise HDDs - not sure what that all means but my
> > suspicion is that the Fedora11 is pretty new and bare bones.
>
> You will need to specify all DASDs in /etc/modprobe.conf (you should
> have "options dasd_mod dasd=..." there) and regenerate the init ramdisk
> with mkinitrd.

You can actually put a offline DASD online in a running system as well:

chccwdev -e <nr>

where <nr> is the device number of the DASD you want to bring online. 
After you did this you should be able to see it in /proc/partitions and 
dmesg and so forth.

Hope that helps,

Thanks & regards, Phil