When you are handling GFS Shared File Systems, do not execute unlink(2) or rename(2) for a file being created by open(2) with O_CREAT or by creat(2), from the other node.
If you execute unlink(2) or rename(2) for a file being created by open(2) with O_CREAT or by creat(2) from the other node, unlink(2) or rename(2) will return an exit code, but open(2) or creat(2) might encounter an ESTALE error.
Accordingly, commands (*1) that are using the open(2) or creat(2) might also return an error code.
*1 Creating a file with touch(1) returns an error code of 1.