columnstoreBackup copies only the softlink instead the data.

If for example

/usr/local/mariadb/columnstore/data1
is a soft link, columnstoreBackup backup only the softlink himself not the data.

In the code of columnstoreBackup I found the following.

## setup rsync option lists

rsyncCommand="rsync "

rsyncOptions="-a "

-a is equivalent to -rlptgoD

This includes -l option, which is described as
"When symlinks are encountered, recreate the symlink on the destination."

-L do the opposite, so probably replacing

rsyncOptions="-a "

with

rsyncOptions="-rLptgoD "

would fix this.