[LU-17892] lnetctl export with empty nets should not error

• Type: Bug
• Resolution: Fixed
• Priority: Minor
• Fix Version/s: Lustre 2.16.0
• Severity: 3
• Assignee: Chris Horn
• Reporter: Chris Horn

Description

export --backup prints an error message when no nets have been configured

cassini-hosta:/home/hornc/lustre-wc-rel/lustre/tests # lnetctl lnet configure
cassini-hosta:/home/hornc/lustre-wc-rel/lustre/tests # lnetctl export --backup
---
show:
-     net:
      errno: -3
      descr: ! "Network is down"
...
global:
    numa_range: 0
    max_interfaces: 200
    discovery: 1
    drop_asym_route: 0
    retry_count: 2
    transaction_timeout: 150
    health_sensitivity: 100
    recovery_interval: 1
    router_sensitivity: 100
    lnd_timeout: 49
    response_tracking: 3
    recovery_limit: 0
    max_recovery_ping_interval: 900
cassini-hosta:/home/hornc/lustre-wc-rel/lustre/tests #