We are running nmon (from AIX 7.1 TL3 SP1) and PowerHA 6.1 EE (6.1.0 SP9). Has anyone noticed that topas_nmon locks the volume groups and prevents a failover?
Pinned topic topas_nmon locking vg and preventing powerha failover?
MarkTaylor 100000UHNS70 PostsACCEPTED ANSWER
Re: topas_nmon locking vg and preventing powerha failover?2014-02-24T10:46:58Z in response to EF9W_Robert_Wong
I am assuming that you are talking about nmon in batch mode writing to a filesystem in the volume group ? can you clarify / explain your setup a little more ?
HA should kill and unmount any filesystems, however, if the i/o is stuck in kernel mode then killing the proc may not be within the required timeframe .. have you got any I/O issues with the underlying disks ?