Red Hat Bugzilla – Bug 1478136
[GNFS] gnfs crashed at nfs3_lookup while subdir mount on solaris client
Last modified: 2017-08-05 14:48:56 EDT
Description of problem: gnfs crashed at nfs3_lookup while subdir mount on solaris client. This bug is to track the backport of missing patch for bug-https://bugzilla.redhat.com/show_bug.cgi?id=1472773 Version-Release number of selected component (if applicable): glusterfs-fuse-3.8.4-37.el7rhgs.x86_64 How reproducible: Steps to Reproduce: 1.Create EC volume 2.Export the volume via GNFS 3.Mount the volume on solaris client 4.Create a directory on the mount point 5.Unmount the volume 6.Mount the subdir to the same solaris client. 7.Provide permission to export subdirectory mani to client 10.70.37.192 only (which is other client,not solaris client) #gluster v set disperseVol nfs.export-dir "/subdir(10.70.37.192)" volume set: success # gluster v get disperseVol all | grep export nfs.export-dirs on nfs.export-volumes on nfs.export-dir /subdir(10.70.37.192) nfs.exports-auth-enable (null) Actual results: GNFS got crashed at nfs3_lookup [Thread debugging using libthread_db enabled] Using host libthread_db library "/lib64/libthread_db.so.1". Core was generated by `/usr/sbin/glusterfs -s localhost --volfile-id gluster/nfs -p /var/lib/glusterd/'. Program terminated with signal 11, Segmentation fault. #0 0x00007f3bb4e1f215 in _gf_ref_put () from /lib64/libglusterfs.so.0 Missing separate debuginfos, use: debuginfo-install glusterfs-fuse-3.8.4-37.el7rhgs.x86_64 (gdb) bt #0 0x00007f3bb4e1f215 in _gf_ref_put () from /lib64/libglusterfs.so.0 #1 0x00007f3ba6b24de2 in nfs3_lookup () from /usr/lib64/glusterfs/3.8.4/xlator/nfs/server.so #2 0x00007f3ba6b25418 in nfs3svc_lookup () from /usr/lib64/glusterfs/3.8.4/xlator/nfs/server.so #3 0x00007f3bb4b738c5 in rpcsvc_handle_rpc_call () from /lib64/libgfrpc.so.0 #4 0x00007f3bb4b73aab in rpcsvc_notify () from /lib64/libgfrpc.so.0 #5 0x00007f3bb4b759e3 in rpc_transport_notify () from /lib64/libgfrpc.so.0 #6 0x00007f3ba99a43d6 in socket_event_poll_in () from /usr/lib64/glusterfs/3.8.4/rpc-transport/socket.so #7 0x00007f3ba99a697c in socket_event_handler () from /usr/lib64/glusterfs/3.8.4/rpc-transport/socket.so #8 0x00007f3bb4e0b106 in event_dispatch_epoll_worker () from /lib64/libglusterfs.so.0 #9 0x00007f3bb3c0fe25 in start_thread () from /lib64/libpthread.so.0 #10 0x00007f3bb34dc34d in clone () from /lib64/libc.so.6 (gdb) q Expected results: GNFS should not crash while mounting subdir to client Additional info: Hit this bug while verifying BZ -https://bugzilla.redhat.com/show_bug.cgi?id=1451224
upstream patch : https://review.gluster.org/#/c/17822/
patch is already present in 3.12. downstream patch : https://code.engineering.redhat.com/gerrit/#/c/114348/
Verified this bug on glusterfs-3.8.4-38.el7rhgs.x86_64 Steps: 1.Create a 2 x (4 + 2) Distributed-Disperse Volume 2.Export the volume via GNFS 3.Mount the volume to solaris client.Create a sub dir inside the mount mount -bash-3.00# mount -o proto=tcp,vers=3 nfs://10.70.42.1:/disperseVol /mnt/GNFSMOunt/ -bash-3.00# cd /mnt/GNFSMOunt/ l-bash-3.00# ls msaini 4.Unmount the volume 5.Mount the subdir on solaris client created at step 3 -bash-3.00# mount -o proto=tcp,vers=3 nfs://10.70.42.1:/disperseVol/mani /mnt/GNFSMOunt/ 6.Unmount the subdir -bash-3.00# umount /mnt/GNFSMOunt/ 7.Restrict the volume to some IP other then solaris client IP # gluster v set disperseVol nfs.export-dir "/mani(10.70.37.142)" volume set: success 8.Now again try mounting the same subdir "mani" on solaris client.Mount fails as the solaris client doesnot have permission to mount. -bash-3.00# mount -o proto=tcp,vers=3 nfs://10.70.42.1:/disperseVol/mani /mnt/GNFSMOunt/ nfs mount: 10.70.42.1: : RPC: Program not registered nfs mount: retrying: /mnt/GNFSMOunt Unable to hit the crash with the same steps mentioned in this bug. Moving this bug to verified state