Data Domain: boostfs plugin memory leak

Gradual increase in memory usage after mounting BoostFS
BoostFS processes consuming a significant portion of system memory.
Higher memory utilization when multiple BoostFS mounts are configured.
System performance degradation over time
Memory usage appears to grow continuously without being released.

The issue is caused by a memory leak in third-party lockbox libraries integrated within BoostFS.
BoostFS uses a lockbox mechanism to securely store credentials for Data Domain storage units.
During operations such as mount and I/O, lockbox entries are repeatedly validated.
Each validation results in memory allocation by the lockbox library.
This allocated memory is not properly released, leading to a memory leak.
Over time and with multiple mounts, memory consumption grows significantly.
Impacted versions:
BoostFS 7.12 and earlier are known to be affected.

Upgrade BoostFS to version 7.13 or later, where this issue has been addressed.
After upgrade, monitor memory usage to confirm stabilization.

If an immediate upgrade is not possible:
Minimize the number of concurrent BoostFS mounts where feasible.
Periodically restart BoostFS processes as a temporary mitigation.