Forcing a disk rescan after %pre
John Summerfield
debian at herakles.homelinux.org
Thu Oct 2 01:22:48 UTC 2008
Dag Wieers wrote:
> Hi,
>
> We are integrating some pre-install scripts. One of the things we have
> now is that in the %pre phase the HW RAID controller is tested for
> "Virtual disks" and if none are found it will create a RAID config
> depending on the number of disks found.
>
> The problem is that even when we created the RAID, restarted the RAID
> driver and created the device node (fdisk -l shows the new disk).
> Anaconda does not know about the new disk, likely because the scan for
> disks happened before.
>
> I found a file /tmp/scsidisks and also rewrite that file, but still
> Anaconda does not update its view of the system after the %pre.
>
> Does someone know how we can make Anaconda understand that we created a
> disk in the %pre ?
I'm a little puzzled. Years ago (RHL 7.x I think) I used to initialise
disks in %pre with various incantations of dd and fdisk (one can pipe
commands into fdisk). That worked fine, and I'm pretty sure I created
new partitions. fdisk forces partition tables to be reread.
Of course, it's possible anaconda has been broken since then:-)
--
Cheers
John
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