Messages in this thread | | | Date | Thu, 6 Aug 1998 00:31:29 +0200 | From | Jochen Heuer <> | Subject | Re: devfs debate |
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On Wed, Aug 05, 1998 at 03:03:15PM -0400, Andrew J. Anderson wrote: > On Wed, 5 Aug 1998, Peter T. Breuer wrote:
[...]
> > OK, have them, but put in the symbolic links with human names. > > sigh. that's what devfs _does_ if you let it. Or you can _CHOOSE_ not to > even use it. I'm not proposing to force you to use something different, > I'm asking you to acknowledge that there is a group of people in the Linux > community that would greatly benefit from this, and that there is no > reason to be opposing it as much as you have been.
This is how my /dev looks like -- btw. I'm using devfs:
[jogi@planetzork jogi]$ ls -l /dev/sd* lr-xr-xr-x 1 root root 0 Jan 1 1970 /dev/sda -> sd/c0b0t0u0 lr-xr-xr-x 1 root root 0 Jan 1 1970 /dev/sda1 -> sd/c0b0t0u0p1 lr-xr-xr-x 1 root root 0 Jan 1 1970 /dev/sda2 -> sd/c0b0t0u0p2 lr-xr-xr-x 1 root root 0 Jan 1 1970 /dev/sda3 -> sd/c0b0t0u0p3 lr-xr-xr-x 1 root root 0 Jan 1 1970 /dev/sda5 -> sd/c0b0t0u0p5 lr-xr-xr-x 1 root root 0 Jan 1 1970 /dev/sda6 -> sd/c0b0t0u0p6 lr-xr-xr-x 1 root root 0 Jan 1 1970 /dev/sda7 -> sd/c0b0t0u0p7
/dev/sd: total 11 brw-r----- 1 root root 8, 0 Jan 1 1970 c0b0t0u0 brw-r----- 1 root root 8, 1 Jan 1 1970 c0b0t0u0p1 brw-r----- 1 root root 8, 2 Jan 1 1970 c0b0t0u0p2 brw-r----- 1 root root 8, 3 Jan 1 1970 c0b0t0u0p3 brw-r----- 1 root root 8, 5 Jan 1 1970 c0b0t0u0p5 brw-r----- 1 root root 8, 6 Jan 1 1970 c0b0t0u0p6 brw-r----- 1 root root 8, 7 Jan 1 1970 c0b0t0u0p7
Furthermore I have a spare disk which I use for cd burning. This disk is off most of the time because it's old and makes real noise.
If I want to use it I switch it on and do a
echo "scsi add-single-device 0 0 5 0">/proc/scsi/scsi
and now I have two more devices:
brw-r----- 1 root root 8, 16 Jan 1 1970 c0b0t5u0 brw-r----- 1 root root 8, 17 Jan 1 1970 c0b0t5u0p1
lr-xr-xr-x 1 root root 0 Jan 1 1970 /dev/sdb -> sd/c0b0t5u0 lr-xr-xr-x 1 root root 0 Jan 1 1970 /dev/sdb1 -> sd/c0b0t5u0p1
This is nice but not the real point. If I have powered up my external mo-disk the above disk is not necessary /dev/sdb any more because my mo-disk is on id 3. You cannot even say which disk is your current /dev/sdb because it depends which disk is powered up and added first. Now make a cd-image on /dev/sdb instead of /dev/sd/c0b0t5u0 and play roulette ... All data of the mo might be lost. Tried once ... :(
That's why I like devfs. Although it's not perfect it's a *good* startingpoint ...
Just my opinion.
Regards,
Jogi
--
Well, yeah ... I suppose there's no point in getting greedy, is there?
<< Calvin & Hobbes >>
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