Date: Thu, 22 Oct 1998 03:27:50 -0700 (PDT) From: asami@FreeBSD.ORG (Satoshi Asami) To: tbuswell@mediaone.net Cc: scsi@FreeBSD.ORG Subject: Re: for i in disks Message-ID: <199810221027.DAA21738@silvia.hip.berkeley.edu> In-Reply-To: <13870.3656.235875.122481@tbuswell.ne.mediaone.net> (message from Ted Buswell on Wed, 21 Oct 1998 12:45:54 -0400 (EDT))
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* I haven't been following this thread closely, but unless I'm
* missing something, I think the Disk_Names() function from libdisk(3)
* is what you're looking for.. [assuming compiled C code is OK].
* -Ted
*
* /* gcc x.c -ldisk */
* extern char **Disk_Names();
* main() {
* char **p = Disk_Names();
* while(*p) puts(*p++);
* }
Oooh. This is very nice and simple. :)
It works on my recent CAM system but not on my old one. Thanks
though.
By the way, in case anyone is interested, this is what I came up
with. I can now move disks around and still have them mounted
correctly. :)
/etc/rc.disk (called from /etc/rc, right after clean_var):
===
#
# disk setups
#
# $Id$
#
dir=/mnt
echo "setting up disks"
found=0
for i in /dev/sd*a; do
if ! mount -o ro $i $dir 2>/dev/null; then
continue
fi
if [ -f $dir/autorun.sh ]; then
echo "running $i's autorun script"
found=1
sh $dir/autorun.sh $dir $i
fi
if ! umount $dir; then
echo "error unmounting $i"
exit 1
fi
done
if [ $found = 1 -a -f /var/run/autorun.sh ]; then
echo "running /var/run/autorun.sh"
sh /var/run/autorun.sh
fi
echo "done"
===
For a simple mount, this will be the autorun.sh:
===
#!/bin/sh
unit=$(/usr/bin/printf "%02x" $(echo $2 | sed -e 's./dev/sd..' -e 's/a$//'))
fsck -p /dev/dsk/sd${unit}h || exit 1
mount /dev/dsk/sd${unit}h /MOUNTPOINT
===
The black magic about unit and /dev/dsk is our peciluar setup -- I
have all disks wired to "B * 16 + I" where B is bus number and I is
SCSI ID, and have a bunch of symlinks from /dev/dsk/sd* to /dev/sd* to
make them easier to read. The links in /dev/dsk/sd* are named as
"sdBIP" where I is represented in hexadecimal (0-f) and P is the
partition name.
For a ccd array, use this one:
===
#!/bin/sh
unit=$(/usr/bin/printf "%02x" $(echo $2 | sed -e 's./dev/sd..' -e 's/a$//'))
echo /dev/dsk/sd${unit}h > /tmp/$(cat $1/diskid)-$(cat $1/ccdno)
cp $1/mountpoint /tmp/$(cat $1/ccdno)-mountpoint
cp $1/var-autorun.sh /var/run/autorun.sh
===
and this var-autorun.sh:
===
#!/bin/sh
for ccd in 0 1; do
if [ $(echo $(echo /tmp/*-ccd$ccd | wc -w)) = 13 ]; then
echo "found 13 disks, making ccd"
echo -n "ccd$ccd 128 none " > /tmp/ccd.conf
echo $(cat /tmp/*-ccd$ccd) >> /tmp/ccd.conf
ccdconfig -Cv -f /tmp/ccd.conf
fsck -p /dev/ccd${ccd}c
mount /dev/ccd${ccd}c $(cat /tmp/ccd${ccd}-mountpoint)
rm -f /tmp/ccd.conf /tmp/ccd${ccd}-mountpoint
rm -f /tmp/*-ccd${ccd}
else
echo "error"
fi
done
===
Obviously things like "13" and "128" should be on the disks somewhere,
we need better error handling, but it's a start. :)
Satoshi
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