File system creation script on AIX 6.1 using while loop
Code:
#!/bin/sh
echo "VG: "
read VG
echo "LP: "
read LP
echo "SAP: "
read SAP
echo "NUM: "
read NUM
echo "SID: "
read SID
while [[ $NUM -lt 2 ]]; read VG LP SAP NUM SID ; do
mklv -y $SAP$NUM -t jfs2 -e x $VG $LP;
crfs -v jfs2 -d /dev/$SAP$NUM -m /oracle/$SID/$SAP$NUM -A yes -p rw -a log=INLINE -a options=cio;
NUM=$((NUM+1)) OR (( NUM++ ))
done
I want to create file system on AIX as priyank1, priyank2 and so on...
VG is the volume group name, LP is the logical partition/size of FS, SAP is the name "priyank" and SID is the Directory under /oracle..
Please let me know if any further details needed.
Please help the above script is not working...not reading the variable properly while executing the commands.
also i have placed 2 variable together $SAP$NUM , will this be a problem ?
Error is unable to find the vg name...while the vg is already available.
If you have an existing volume group that you want to recover the structure for before restoring the content, then your can use savevg and restvg
In our site, we have created an exclude file for each volume group so that the files/directories are not backed up, just the Logical Volumes and Filesystem information. For a volume group datavg we have a file called /etc/exclude.datavg that just contains one line:-
Code:
^\./
This can then be used with the following command:-
Code:
savevg -ef /disaster/datavg.structure datavg
What this is doing is saving the volume group, but excluding everything it finds that matches the pattern in the file. The pattern we have picked means it excludes everything, so you just get the structure, for which the definitions are a few small files. The directory /disaster needs to be in the root volume group, but not necessarily in the root filesystem. It just needs to be somewhere that will be included on your mksysb media.
Be sure to remove the directory /tmp/vgdata before you start and create your mksysb afterwards. Of course you can use whatever file name you like to save the information. You can copy that to another server that is already running and use it if you wish. You may need to be aware of conflicting logical volumes or filesystems in this case.
After restoring your mksysb elsewhere, you can use the following to build your volume group:-
You need to give it enough disks to build what you had before.
I used to script this up with a mklv then a crfs using the LV I'd just built and on some servers it could take 90 minutes to run the script. When we got wise and used restvg it was about 10 minutes and the filesystems were all prepared, added to /etc/filesystems and mounted ready for data restore.
It is such a joy to recover with such ease and it emphasises to me why AIX is an excellent OS choice.
I hope that this helps. Let me know if I've not made anything clear.
Robin
Liverpool/Blackburn
UK
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