Need to create an for loop for adding an disk in veritas volume group.

Shell Programming and Scripting
1

Hi Experts

I need an script to add an disk in to the veritas volume manager disk group.

For example:

# cd /tmp
# view disk
c6t5d2
c6t2d1
c6t3d7
c6t11d2
c7t11d2
c6t11d6

Normally we add the disk like this:

# vxdg -g freedg freedisk01=c6t5d2
# vxdg -g freedg freedisk02=c6t2d1
# vxdg -g freedg freedisk03=c6t3d7 and so on..

I am looking for for forloop where i could use freedisk(n+1) till all the disk get added.

# for i in `cat /tmp/disk`
do
vxdg -g freedg freedisk(n+1)=$i
done

I am not sure about the correct syntax used in above script for freedisk(n+1) appreciate if any one could suggest me.

Regards
Indrajit Bhagat

2

Hi

$ awk '{printf "vxdg -g freedg freedisk%02d=%s\n",++i,$0;}' /tmp/disk
vxdg -g freedg freedisk01=c6t5d2
vxdg -g freedg freedisk02=c6t2d1
vxdg -g freedg freedisk03=c6t3d7
vxdg -g freedg freedisk04=c6t11d2
vxdg -g freedg freedisk05=c7t11d2
vxdg -g freedg freedisk06=c6t11d6

If this is the output you expected, you can redirect the above output to a file and run it.

Guru.

3

In ksh you could also use:

#!/bin/ksh
typeset -Z2 n=1
for i in $(cat /tmp/disk)
do
    vxdg -g freedg freedisk$n=$i
    ((n++))
done
4 
#!/bin/sh 
disknum=14
for i in `cat /tmp/disk` 
do 
  if [ $disknum -lt 18 ]; then 
    vxdg -g freedg adddisk disk$disknum=$i 
  else 
    echo "All the disk is added to the diskgroup" 
  fi 
  disknum=$(( disknum +1 ))
done

Which is working fine now