[LU-5385] HSM: do not call the JSON log functions if no log is open

• Type: Bug
• Resolution: Fixed
• Priority: Minor
• Fix Version/s: Lustre 2.7.0, Lustre 2.5.4
• Labels: hsm patch
• Severity: 3
• Assignee: James Nunez (Inactive)
• Reporter: Frank Zago (Inactive)

Description

llapi_hsm_log_ct_registration() and llapi_hsm_log_ct_progress() are
very expensive (fid2path+allocations). Do not let them do anything
if llapi_hsm_write_json_event() is going to discard the JSON record.

This impacts the performance of the copytool.