Description of problem: *********************** glfs_dup() functionality is currently broken in glusterfs. Steps to Reproduce: ******************* Code snippet from libgfapi-python tests: f = File(self.vol.open("dune", os.O_CREAT | os.O_EXCL | os.O_RDWR)) f.write("I must not fear. Fear is the mind-killer.") fdup = f.dup() self.assertTrue(isinstance(fdup, File)) f.close() ret = fdup.lseek(0, os.SEEK_SET) self.assertEqual(ret, 0) Actual results: *************** ERROR: test_write_file_dup_lseek_read (test.functional.libgfapi-python-tests.FileOpsTest) ---------------------------------------------------------------------- Traceback (most recent call last): File "/root/src/libgfapi-python/test/functional/libgfapi-python-tests.py", line 236, in test_write_file_dup_lseek_read ret = fdup.lseek(0, os.SEEK_SET) File "/root/src/libgfapi-python/gluster/gfapi.py", line 306, in lseek raise OSError(err, os.strerror(err)) OSError: [Errno 9] Bad file descriptor Expected results: ***************** lseek() should succeed. Additional information ********************** This change (http://review.gluster.org/13340) disallows any operation on duplicate once the original fd is closed. Seems like a deep copy of original fd instance should be done.
REVIEW: http://review.gluster.org/13666 (gfapi: preserve glfd state during glfs_dup) posted (#1) for review on master by Rajesh Joseph (rjoseph)
glfs_dup is completely broken. Current behavior is not in accordance with POSIX dup (http://linux.die.net/man/2/dup) http://review.gluster.org/13666 only addresses are very small subset of the problem. glfs_dup needs to be re-written to fix the broken behavior. Therefore not changing the state of the bug as of now.
COMMIT: http://review.gluster.org/13666 committed in master by Niels de Vos (ndevos) ------ commit 5bdfaf98904a339144bf3a237b162e8385b95085 Author: Rajesh Joseph <rjoseph> Date: Wed Mar 9 22:05:18 2016 +0530 gfapi: preserve glfd state during glfs_dup Following patch introduced a new state variable in glfd to track the current status of the fd. http://review.gluster.org/13340/ But this state was not copied in glfd_dup function. BUG: 1311146 Change-Id: I283f8944035f6defe491f81e13d7ef28fc440572 Signed-off-by: Rajesh Joseph <rjoseph> Reviewed-on: http://review.gluster.org/13666 Smoke: Gluster Build System <jenkins.com> Reviewed-by: Prashanth Pai <ppai> Tested-by: Prashanth Pai <ppai> NetBSD-regression: NetBSD Build System <jenkins.org> CentOS-regression: Gluster Build System <jenkins.com> Reviewed-by: Raghavendra Talur <rtalur> Reviewed-by: Niels de Vos <ndevos>