[Gluster-users] Opening a file on gluster gives error - Permission denied

[Vikas R]

Hi ,

Im running gluster 3.1.4 .

[glusterfs 3.1.4 built on May  5 2011 06:52:24
Repository revision: v3.1.4]

Assumed test scenario: [Might not be correct but the test python script
gives a definite repro]
    1. create few files , write few thousands of lines of data in these
files.
    2. now create another file in the same dir and Rename or move the new
file with the old file name.
    3. Try these for few number of files.
    4  After few iterations opening these files with any application will
give "Permission denied."

In my test i was using python apis - os.rename and file open apis.
This is very easy to reproduce with the attached python script

*Note*: before running the script create the required directories mentioned
in the script as well as create each input directories with atleast 1500
files.

The issue seems to be related to DHT. When I delete the link files with
sticky bit ------T from the backend after the application returns
"permission denied", the file becomes accessible.

logs:

[2011-05-20 10:02:41.821605] I
[client-handshake.c:1014:select_server_supported_programs] 1-172.26.98.57-1:
Using Program GlusterFS-3.1.0, Num (1298437), Version (310)
[2011-05-20 10:02:41.821696] I [client-handshake.c:852:client_setvolume_cbk]
1-172.26.98.56-1: Connected to 172.26.98.56:6996, attached to remote volume
'brickex'.
[2011-05-20 10:02:41.821814] I
[client-handshake.c:1014:select_server_supported_programs] 1-172.26.98.59-1:
Using Program GlusterFS-3.1.0, Num (1298437), Version (310)
[2011-05-20 10:02:41.821852] I [client-handshake.c:852:client_setvolume_cbk]
1-172.26.98.57-1: Connected to 172.26.98.57:6996, attached to remote volume
'brickex'.
[2011-05-20 10:02:41.821863] I [afr-common.c:2552:afr_notify] 1-replicate-2:
Subvolume '172.26.98.57-1' came back up; going online.
[2011-05-20 10:02:41.824742] I [fuse-bridge.c:3316:fuse_graph_setup] 0-fuse:
switched graph to 1
[2011-05-20 10:02:41.824784] I [client-handshake.c:852:client_setvolume_cbk]
1-172.26.98.59-1: Connected to 172.26.98.59:6996, attached to remote volume
'brickex'.
[2011-05-20 10:02:42.832141] I [afr-common.c:819:afr_fresh_lookup_cbk]
1-replicate-1: added root inode
[2011-05-20 10:02:42.832656] I [afr-common.c:819:afr_fresh_lookup_cbk]
1-replicate-2: added root inode
[2011-05-20 10:02:42.847511] I [afr-common.c:716:afr_lookup_done]
1-replicate-2: background  data self-heal triggered. path:
/logs/admin_scheduler_lock
[2011-05-20 10:02:42.849009] I
[afr-self-heal-common.c:1527:afr_self_heal_completion_cbk] 1-replicate-2:
background  data self-heal completed on /logs/admin_scheduler_lock
[2011-05-20 10:06:41.459183] W [fuse-bridge.c:582:fuse_fd_cbk]
0-glusterfs-fuse: 333260: OPEN() /testdir/input11.idx => -1 (Invalid
argument)
[2011-05-20 10:06:41.462296] W [fuse-bridge.c:582:fuse_fd_cbk]
0-glusterfs-fuse: 333267: OPEN() /testdir/input13.idx => -1 (Invalid
argument)
[2011-05-20 10:06:41.464954] W [fuse-bridge.c:582:fuse_fd_cbk]
0-glusterfs-fuse: 333274: OPEN() /testdir/input15.idx => -1 (Invalid
argument)
[2011-05-20 10:06:41.465279] W [fuse-bridge.c:582:fuse_fd_cbk]
0-glusterfs-fuse: 333275: OPEN() /testdir/input16.idx => -1 (Invalid
argument)
[2011-05-20 10:06:41.465586] W [fuse-bridge.c:582:fuse_fd_cbk]
0-glusterfs-fuse: 333276: OPEN() /testdir/input17.idx => -1 (Invalid
argument)
[2011-05-20 10:06:41.465915] W [fuse-bridge.c:582:fuse_fd_cbk]
0-glusterfs-fuse: 333277: OPEN() /testdir/input18.idx => -1 (Invalid
argument)
[2011-05-20 10:06:41.480038] W [fuse-bridge.c:582:fuse_fd_cbk]
0-glusterfs-fuse: 333319: OPEN() /testdir/input11.idx => -1 (Invalid
argument)

tx
Vikas
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