[oh-tracker] [ openhpi-Bugs-1113114 ] snmp_bc threaded env: threads hangs.

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Bugs item #1113114, was opened at 2005-01-31 05:43
Message generated for change (Tracker Item Submitted) made by Item Submitter
You can respond by visiting: 
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Category: Blade Center Plugin
Group: None
Status: Open
Resolution: None
Priority: 5
Submitted By: peter dinh phan (pdphan)
Assigned to: peter dinh phan (pdphan)
Summary: snmp_bc threaded env: threads hangs.

Initial Comment:
1. openhpi.conf is configured with multiple bc handles.
Running in SMP threaded environment, the main thread
hang with either Linux kernel 2.4 or 2.6.

2. Trace; for hpiinv with debug-enabled, trace-enabled,
bc_lock debug-enabled, uid_lock debug-enabled;  shows:
  
 safhpi.c:2535:saHpiIdrFieldGet: Access
saHpiIdrFieldGet from plugin.
    BC_LOCK Thread: 0x804b008 -
snmp_bc_inventory.c:250:snmp_bc_get_idr_field: Attempt
to lock custom_handle 0x808d4d0, lock count 0

    BC_LOCK Thread: 0x804b008 -
snmp_bc_inventory.c:250:snmp_bc_get_idr_field: Got the
lock because no one had it. Lockcount 1

    BC_LOCK Thread: 0x804b008 -
snmp_bc_inventory.c:250:snmp_bc_get_idr_field:
custom_handle 0x808d4d0 got lock, lock count 1

 event.c:72:oh_event_thread_loop: TIMEDOUT: Woke up, am
looping again
 event.c:50:oh_event_thread_loop: Thread Harvesting events
 event.c:175:oh_harvest_events: harvesting for 1
    BC_LOCK Thread: 0x8094978 -
snmp_bc.c:121:snmp_bc_get_event: Attempt to lock
custom_handle 0x8053cc8, lock count 0

    BC_LOCK Thread: 0x8094978 -
snmp_bc.c:121:snmp_bc_get_event: Got the lock because
no one had it. Lockcount 1

    BC_LOCK Thread: 0x8094978 -
snmp_bc.c:121:snmp_bc_get_event: custom_handle
0x8053cc8 got lock, lock count 1

 snmp_bc_sel.c:468:snmp_bc_selcache_sync: EL Sync:
there are no new entry indicated.

    BC_LOCK Thread: 0x8094978 -
snmp_bc.c:141:snmp_bc_get_event: Attempt to unlock
custom_handle 0x8053cc8, lock count 1

    BC_LOCK Thread: 0x8094978 -
snmp_bc.c:141:snmp_bc_get_event: Released the lock,
lockcount 0

    BC_LOCK Thread: 0x8094978 -
snmp_bc.c:141:snmp_bc_get_event: custom_handle
0x8053cc8 released lock, lock count 0

 event.c:149:harvest_events_for_handler: Handler is out
of Events
 event.c:175:oh_harvest_events: harvesting for 2
    BC_LOCK Thread: 0x8094978 -
snmp_bc.c:121:snmp_bc_get_event: Attempt to lock
custom_handle 0x808d4d0, lock count 1

    BC_LOCK Thread: 0x8094978 -
snmp_bc.c:121:snmp_bc_get_event: Going to block for a
lock now. Lockcount 1

3. Problem: Dont know why "Thread: 0x804b008" does not
complete it tasks and free the lock?

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