While running ihope workflows in the LIGO mode, duncan ran into an issue of circular symlinks i.e. the symlink jobs try to create a symlink between the same source and destination file.

for e.g.
The symlink input file had this source destination pair

/home/dbrown/projects/cbc/s6/week3_dax/dax/932169543-932180000/playground/V1-SIRE_SUMMARY_FIRST_PLAYGROUND-932169543-10457.input /home/dbrown/projects/cbc/s6/week3_dax/dax/932169543-932180000/./playground/V1-SIRE_SUMMARY_FIRST_PLAYGROUND-932169543-10457.input

The above case happens when the input location refers to the directory where the user want the jobs to be executed.

Ideally , both the symlinking executable and pegasus should have inbuilt checks to detect this case and not try to create a symlink.