Re: OT] Joerg Schilling flames Linux on his Blog

[Gerd Knorr <kraxel@suse.de>]

  Hi,

> Well I remember the first time I saw devfs running, I thought "Wow
> finally I have a way to find the disc that is scsi id 3 on controller 0
> even if I add a device at id 2 after setting up the system", something

> I think sysfs can do it too, although I haven't looked to much at sysfs
> yet.

Yep, it can.

> I don't know if the ide or scsi method is currently more sane, but it
> sure would be nice to have a consistent behaviour between the two.

On my suse 9.3, out-of-the-box, I find this (implemented via
udev rules):

   # find /dev/cd /dev/disk -type l -print | sort
   /dev/cd/by-id/HL-DT-ST_DVDRAM_GSA-4040B_K213BDG5213
   /dev/cd/by-id/LG_CD-RW_CED-8080B_2000_07_27e
   /dev/cd/by-path/pci-0000:00:04.1-ide-1:0
   /dev/cd/by-path/pci-0000:00:04.1-ide-1:1
   /dev/disk/by-id/IBM-DTLA-305040_YJEYJM36751
   /dev/disk/by-id/IBM-DTLA-305040_YJEYJM36751p1
   [ ... ]
   /dev/disk/by-id/SIBM_DCAS-34330_B3GX3681
   /dev/disk/by-id/SIBM_DCAS-34330_B3GX3681p1
   /dev/disk/by-id/SIBM_DCAS-34330_B3GX3681p2
   /dev/disk/by-label/WIN98
   /dev/disk/by-label/unknown
   /dev/disk/by-path/pci-0000:00:04.1-ide-0:0
   /dev/disk/by-path/pci-0000:00:04.1-ide-0:0p1
   [ ... ]
   /dev/disk/by-path/pci-0000:00:0e.0-scsi-0:0:0:0
   /dev/disk/by-path/pci-0000:00:0e.0-scsi-0:0:0:0-generic
   /dev/disk/by-path/pci-0000:00:0e.0-scsi-0:0:0:0p1
   /dev/disk/by-path/pci-0000:00:0e.0-scsi-0:0:0:0p2
   /dev/disk/by-uuid/3140-1206
   /dev/disk/by-uuid/5fbce796-2a1a-4ea3-bd5f-be35b28b2fb1
   /dev/disk/by-uuid/b6a45df7-63bb-4890-b5d2-7bdcbe6c70a5
   /dev/disk/by-uuid/cb367983-ac59-42cd-839d-b5cf0735fae5
   /dev/disk/by-uuid/unknown
 
You'll have stable names both by connection path (great for the
raid case) and by device name (useful for the usb burner which
you plug into a different port each time).  Guess you'll find
there what you are looking for ;)

  Gerd

-- 
export CDR_DEVICE=/dev/cd/by-id/LG_CD-RW_CED-8080B_2000_07_27e