select installation drive by serial number

[Jens Dreger]

On Fri, Jun 22, 2007 at 07:04:37PM +0200, Jens Dreger wrote:
> What format would be apropriate to activate this feature? I'd use
> something like:
> 
>   disk_config serial=4MR4PM9S
> 
> in the disk_config file.

Ok, I have changed setup_harddisks now to accept a config line like:

    disk_config /dev/disk/by-id/scsi-SATA_ST3160811AS_3PT03819
or: disk_config /dev/disk/by-id/*_3PT03819

It will simply expand globs and follow links until it finds the actual
device which is then used in the otherwise unchanged setup_harddisks
code. Example:

root at smart:~> grep ^disk_config TEST1
disk_config /dev/disk/by-id/*_3PT03819
root at smart:~> debug=1 ./setup_harddisks -f TEST1
[...]
INPUT: disk_config /dev/disk/by-id/*_3PT03819
DEBUG: paras=/dev/disk/by-id/*_3PT03819
DEBUG: glob detected. expanding => /dev/disk/by-id/scsi-SATA_ST3160811AS_3PT03819
DEBUG: symlink detected. following => /dev/sda
config: sda

root at smart:~> grep ^disk_config TEST2
disk_config /dev/disk/by-id/scsi-SATA_ST3160811AS_3PT03819
root at smart:~> debug=1 ./setup_harddisks -f TEST2
[...]
INPUT: disk_config /dev/disk/by-id/scsi-SATA_ST3160811AS_3PT03819
DEBUG: paras=/dev/disk/by-id/scsi-SATA_ST3160811AS_3PT03819
DEBUG: symlink detected. following => /dev/sda
config: sda

This way it's easy to use all kinds of symlinks udev provides. If
anyone is interested, I'll file a wishlist bug with the patch.

Regards,

Jens.

-- 
Jens Dreger                      Freie Universitaet Berlin
dreger at physik.fu-berlin.de       Fachbereich Physik - ZEDV
Tel: +49 30 83854774             Arnimallee 14
Fax: +49 30 83855902	         14195 Berlin