Re: How to keep CellServDB (and cell mounts) current?

[Sarr Blumson]

In message <[EMAIL PROTECTED]>you write:
>Does anyone have a solution to the problem of keeping
>/usr/vice/etc/CellServDB up-to-date on all your AFS clients?

We run this cron job nightly:

#!/bin/sh 

# last mod November 1992 [EMAIL PROTECTED]
#       merge in CellServDB from global location(s) and localhost.
#
### Important: do NOT echo any output on RS/6K except on error.  -mdw
PATH=/usr/ucb:/bin:/usr/bin:/usr/vice/bin:/etc
export PATH

: general configuration

hostname=`hostname`
admin=$1

case $admin in
"")
        admin=/afs/umich.edu/group/itd/umich/admin
        ;;
esac

if [ -f /usr/vice/etc/.dontupdate ]
then
        exit 0
fi

: find some cellservdbs

if [ -f $admin/cellservdb/$hostname/CellServDB ]
then
        cdbs="$admin/cellservdb/$hostname/CellServDB"
else
        cdbs="$admin/cellservdb/default/CellServDB"
fi
if [ -f /usr/vice/etc/CellServDB.local ]
then
        cdbs="$cdbs /usr/vice/etc/CellServDB.local"
fi

: merge cellservdbs in - last entry for given cell wins
#test: cdbs="$cdbs /afs/nosuchnost/nosuchfile"

cellservdb=/usr/vice/etc/CellServDB.new

if awk 'BEGIN{ RS=">"; ncells = 0; set[0] = ""; }
{if ($1 != "") {
        if (reset[$1] == 0) { ncells++; set[ncells] = $1; reset[$1] = ncells; }
        data[$1] = $0 } }
END{for (x = 1; x <= ncells; ++x) { printf "%s", ">" data[set[x]]}}' $cdbs >$cellservdb
then
        : all is ok so continue
else
        echo awk failed so CellServDB update run aborted >&2
        exit 1
fi

: if it worked update client and kernel

if [ -s $cellservdb ]
then
        cp $cellservdb /usr/vice/etc/CellServDB
        rm $cellservdb
        cellservdb=/usr/vice/etc/CellServDB
        touch /usr/vice/etc/ThisCell

# /usr/etc/recell
#  (our goal: convert CellSErvDB into shell script and execute it)
#  (make it "sh -v" if you want to see the commands...)
        sed '/^>/{
                x
                / /{
                        s/^/fs newcell /
                        p
                }
                x
        s/^>\([^        ]*\).*/\1/
        h
        d
        }
        s/[     ].**//
        x
        G
        s/\n/ /g
        h
        ${
                g
                / /{
                        s/^/fs newcell /
                        p
                }
        }
        d
        ' $cellservdb | sh
else
        echo bad cellServDB.new so CellServDB update run aborted >&2
        exit 1
fi
exit 0

--------
Sarr Blumson                     [EMAIL PROTECTED]
voice: +1 313 764 0253           FAX: +1 313 763 4434
CITI, University of Michigan     http://www.citi.umich.edu:80/users/sarr/
519 W William, Ann Arbor, MI 48103-4943