How to safely and reliably do a disk-to-disk copy...
Ref: Sun INFODOC ID# 16311

I did the prep work for the attached scripts using the infodoc as a
guide. Inherited a system that was setup w/o ODS yet I needed to
establish some OS disk redundancy. Script called disk2disk.ksh is called
by oscopy.ksh. A wrapper script is run from root cron. The script has
been running successfully since 7/17/00.




Here is the oscopy.ksh script
-----------------------------
#!/bin/ksh
################################################################
# Scriptname: oscopy.ksh
# Date: 07/03/2000
# Author: Tim Lavin
# Description: This script shuts down oracle, does a
#              (disk-to disk copy) from the existing OS disk
#              c0t0d0 to the 2nd internal disk c0t1d0,
#              then brings oracle back up.
# Inputs: Calls /usr/local/bin/disk2disk.ksh which does the
#         actual disk copy via ufsdump/ufsrestore commands.
# Outputs: root crontab executes /usr/local/bin/oscopy_wrapper
#          which calls this script and writes to the logfile
#          /usr/local/bin/log/oscopy.ksh.$$. This script also
#          emails and pages the author if it aborts and the 
#          dba oncall if oracle does not come back up after
#          the disk copy is complete.
################################################################

# Shutdown oracle...
echo
echo "Shutting down Oracle now..."
echo
/bin/sh /etc/rc1.d/K53oracle stop
echo
echo "Waiting to be sure Oracle is down before starting oscopy..."
echo
sleep 300

# If oracle is down, start disk copy, otherwise send abort message...
CHECK_ORACLE=`ps -ef|grep ora_pmon|grep -v grep`
if [ -z "$CHECK_ORACLE" ] ; then
  /usr/local/bin/disk2disk.ksh
   else
    echo
    echo "Oracle is not down... oscopy script aborting."
    echo
    echo "oscopy script aborted on `uname -n`." > /tmp/warn.out
    echo "Plz chk latest /usr/local/bin/log/oscopy.ksh.$$ file." >> /tmp/warn.out
    mailx -s "WARNING:" tim.lavin@nokia.com < /tmp/warn.out
    mailx -s "WARNING:" 2142441618@mobile.att.net < /tmp/warn.out
    /usr/local/bin/notify < /tmp/warn.out
    echo
    echo "oscopy abort message sent!"
    echo
    exit
fi

# Wait until diskcopy is complete before bringing oracle back up...
DD_DONE=`ps -ef|grep ufsdump|grep -v grep`
if [ -z "$DD_DONE" ] ; then 
  echo
  echo "Copying /mnt/etc/vfstab.c0t1d0 to /mnt/etc/vfstab..."
  echo
  cd /mnt/etc
  cp vfstab.c0t1d0 vfstab
  echo
  echo "Contents of /mnt/etc/vfstab:"
  echo
  cat /mnt/etc/vfstab
  echo
  cd /
  umount /mnt
  umount /var1
  echo
  echo "partitions on disk c0t1d0 have been unmounted."
  echo
  echo "**************************************************"
  echo "Starting oracle now... calling oracle boot script."
  echo "**************************************************"
  echo
  /bin/sh /etc/rc2.d/S96oracle start
fi

# If oracle is not up by now, send warning... 
ORACLE_UP=`ps -ef|grep ora_pmon|grep -v grep`
if [ -z "$ORACLE_UP" ] ; then
  echo "Oracle did not come up after OS disk copy" > /tmp/warn1.out
  echo "on Siebel server `uname -n`!" >> /tmp/warn1.out
  mailx -s "WARNING:" 2142441618@mobile.att.net < /tmp/warn1.out
  /usr/local/bin/notify < /tmp/warn.out
  echo
  echo "Oracle warning message sent!"
   else
    echo
    echo "SUCCESS... Oracle is UP!"
    echo
    rm -f /tmp/warn*.out
    echo "cleanup of temporary files complete."
    echo
    echo "oscopy.ksh done." | tee /tmp/warn2.out
    echo
fi



Here is the disk2disk.ksh script
--------------------------------
#!/bin/ksh
#
# Mount the c0t1d0 partitions so we can do the ufsdump...
cd /
mount /dev/dsk/c0t1d0s0 /mnt
mount /dev/dsk/c0t1d0s5 /var1
echo
echo "c0t1d0 partitions are mounted"
echo
# Begin the ufsdump sequence...
echo
echo "Starting copy of disk c0t0d0 to c0t1d0 at `date`."
echo
echo "Doing root partition first... mount point used is /mnt"
echo
cd /
ufsdump 0f - /dev/rdsk/c0t0d0s0 | (cd /mnt ; ufsrestore xf -)
echo
echo "...root partition done."
echo
echo "Doing var partition... mount point used is /var1"
echo
ufsdump 0f - /dev/rdsk/c0t0d0s5 | (cd /var1 ; ufsrestore xf -)
echo
echo "...var partition done."
echo
echo "Disk copy complete at `date`."
echo


-Contributed by Tim Lavin