I had to rename a bunch of logical volumes and filesystems.
This script is based on the lvrename command.
It will go line by line of the fs file formated
cat fs oldfs01a:newfs01b oldfs02a:newfs02b oldfs03a:newfs03b
In my case the lvname and fs were were similar except for the last three characters.
It will umount the fs , rename the lv , rename the mount, rename the /etc/fstab and mount the directory.
Use with caution. Use my tips at your own risk !!
#!/usr/bin/sh
DATE=`date '+%Y.%m.%d_%H.%M.%S'`
cp /etc/hosts /etc/hosts.${DATE}
cat fs | while read line
do
oldfs=`echo ${line} | awk -F: '{print $1}'`
newfs=`echo ${line} | awk -F: '{print $2}'`
mapperinfo=`df -h /var/cache/${oldfs} | grep mapper`
oldlv=`lvs ${mapperinfo} | grep -v LV | awk '{print $1}'`
vgname=`lvs ${mapperinfo} | grep -v LV | awk '{print $2}'`
newlv=`echo ${oldlv} | sed -e "s/${oldfs}/${newfs}/g"`
echo "rename ${oldfs} -> ${newfs}"
sleep 7
#######
df -h /var/cache/${oldfs}
umount /var/cache/${oldfs}
lvrename ${vgname} ${oldlv} ${newlv}
sed -ie "s/${oldfs}/${newfs}/g" /etc/fstab
mv /var/cache/${oldfs} /var/cache/${newfs}
mount /var/cache/${newfs}
df -h /var/cache/${newfs}
echo ""
echo ""
done