Troubleshooting loopbacknfs POSIX Client Upgrades
If you are having difficulty upgrading the POSIX client, it might be due to a shared-memory-segment lock.
About this task
If the mapr-loopbacknfs
service fails to start after an upgrade, use
the following steps to determine if a shared-memory-segment lock was the cause of
the failure:
Procedure
-
Open the
loopbacknfs.log
file. The loopbacknfs.log file is in the following directory:/usr/local/mapr-loopbacknfs/logs/
-
Check for the following string:
Create/Attach to shm failed
-
If the string is present, perform the following steps:
-
Run the following command to identify the
shmid
of the lock:ipcs -m | grep 0x0000161c
-
Run the following command to remove the lock:
ipcrm -m <shm id>
-
Start the
mapr-loopbacknfs
service.
-
Run the following command to identify the