Dbfs File System became unmounted due to mount-dbfs.sh timeout on Exadata Database Machine (Doc ID 1385927.1)

Last updated on JANUARY 06, 2014

Applies to:

Oracle Exadata Storage Server Software - Version 11.2.2.3.2 and later
Information in this document applies to any platform.

Symptoms

You notice DBFS gets unmounted on its own.

GRID alert log indicates dbfs has been unmounted:

CRS-2765:Resource 'dbfs_mount' has failed on server <node name>


/var/log/messages displays timeout message:

DBFS_/<mount point>: Found error or timeout while checking status, cleaning mount automatically


Further validation can be found in the $GRID_HOME/<node name>/agent/crsd/scriptagent_oracle/scriptagent_oracle.log:

2011-12-16 07:29:40.681: [dbfs_mount][1245407552] {2:5253:40700} [check] Check -- ONLINE
2011-12-16 07:30:10.629: [dbfs_mount][1245407552] {2:5253:40700} [check] Executing action script: /u01/app/11.2.0/grid/crs/script/mount-dbfs.sh[check]
2011-12-16 07:30:10.680: [dbfs_mount][1245407552] {2:5253:40700} [check] Check -- ONLINE
2011-12-16 07:30:38.109: [ AGFW][1379641664] {2:5253:40700} Agent received the message: AGENT_HB[Engine] ID 12293:498489
2011-12-16 07:30:40.665: [dbfs_mount][1245407552] {2:5253:40700} [check] Executing action script: /u01/app/11.2.0/grid/crs/script/mount-dbfs.sh[check]
2011-12-16 07:30:54.834: [dbfs_mount][1245407552] {2:5253:40700} [check] Found error or timeout while checking status, cleaning mount automatically
2011-12-16 07:30:56.379: [dbfs_mount][1245407552] {2:5253:40700} [check] cleaning up DBFS nicely using fusermount -u
2011-12-16 07:30:56.379: [dbfs_mount][1245407552] {2:5253:40700} [check] /bin/logger: option requires an argument -- u
2011-12-16 07:30:56.379: [dbfs_mount][1245407552] {2:5253:40700} [check] usage: logger [-is] [-f file] [-p pri] [-t tag] [-u socket] [ message ... ]
2011-12-16 07:30:56.380: [dbfs_mount][1245407552] {2:5253:40700} [check] umount: /dbfs_direct: device is busy
2011-12-16 07:30:56.380: [dbfs_mount][1245407552] {2:5253:40700} [check] umount: /dbfs_direct: device is busy
2011-12-16 07:30:57.455: [dbfs_mount][1245407552] {2:5253:40700} [check] tried fusermount -u, still mounted, now cleaning with fusermount -u -z and kill

Cause

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