NMDA Postgres backup failed with error "fusermount: mount failed: Operation not permitted"

• NMDA Postgres backup failing with the following error:

fusermount: mount failed:  Operation not permitted

• The steps below, taken from the section "Enabling Data Domain BoostFS for Orchestrated Application Protection" in the NetWorker Module for Database and Applications Installation Guide, have been completed.

  1. Created initial entry in the lockbox:

     /opt/emc/boostfs/bin/boostfs lockbox set -d aaaa -s aaaa -u aaaa

  2. Set permissions to the lockbox:

     chmod 0700 /opt/emc/boostfs/lockbox/*
     chmod 1700 /opt/emc/boostfs/lockbox
     chmod 1700 /opt/emc/boostfs/log

  3. Assigned ACL permissions:

     setfacl -m u:<user>:rwx /opt/emc/boostfs/lockbox
     setfacl -m u:<user>:rw /opt/emc/boostfs/lockbox/*
     setfacl -m u:<user>:rwx /opt/emc/boostfs/log

      

     NOTE: Where <user> is the operating system account that runs the OAPP backup and restore.

  4. Checked fusermount binary permissions:

     chmod o-rx /bin/fusermount
     setfacl -m u:<user>:rx /bin/fusermount

• The fusermount binary has the following permissions:

  -rwxr-x---+ 1 root root 32096 Jul 24  2018 /bin/fusermount

The setuid bit is missing from /bin/fusermount. The file's permission should look like this:

-rwsr-x---+ 1 root root 32096 Jul 24  2018 /bin/fusermount

The fusermount contains the setuid flag. If the setuid flag is missing, run the following commands to correct it:

sudo chmod 4755 /bin/fusermount
sudo chmod o-rx /bin/fusermount
sudo setfacl -m u:<user>:rx /bin/fusermount