topic Re: figuring out the process using the devices in Operating System - HP-UX https://community.hpe.com/t5/operating-system-hp-ux/figuring-out-the-process-using-the-devices/m-p/4216537#M326871 Hi,<BR /><BR />can you see the corresponding lines in syslog about your problem ? You can see which daemon is checking devices.<BR /><BR />Kenan. Mon, 16 Jun 2008 16:50:57 GMT Kenan Erdey 2008-06-16T16:50:57Z figuring out the process using the devices https://community.hpe.com/t5/operating-system-hp-ux/figuring-out-the-process-using-the-devices/m-p/4216535#M326869 Have a HPUX 11iv1 server having A9784 (HP 2Gb Fibre Channel" using fcd driver connected to 3PAR and HP storage array. I see the HP host constantly logging (PRLI) in and logging out (LOGO) of the 3PAR Fibre Channel array. The logging and logging out happens irrespective of if the LUNs are presented or not. If lvm volumes are created then the logging in and out stops while it continuously sends scsi inquiry every 1 min and sometimes 2 or 5 min apart for each of the LUNs. I am suspecting the server might be having some monitoring service or checker which might be constantly checking for device existence or HBA connection causing the HBA port to login and out or sends inquiry so many times. This does not happen on the test server even if there are no lvm volumes having same driver and hpux OS ver. Can somebody help me to figure out how to find which process is checking or opening the device so often from the process id's or any other mechanism.<BR /><BR />Some installed software suspects i have are these.<BR /><BR /># swlist<BR />...<BR />21 CMDVIEWSDM 1.09.00 HP StorageWorks Command View VA<BR />38 OnlineDiag <BR />48 HPCVCOMCLI 4.00.00 hp StorageWorks Command View - common client<BR />49 HPCVVASVR 1.09.00 hp StorageWorks Command View SDM - va server<BR />50 HPOVSAMDA 03.20.01.0009 hp OpenView storage area manager HostAgent DIAL<BR />51 HPOVSAMHA 03.20.01.0019 hp OpenView storage area manager HostAgent Framework<BR />52 HPOVSAMSG 03.20.03.0002 hp OpenView storage area manager HostAgent SCSI Gateway<BR />53 HPSWSEC 4.00.00 hp StorageWorks Command View - security<BR /><BR /><BR /> # swlist -l <BR />....<BR />PHCO_29606 1.0 VERITAS VM Provider Patch for NBU 5.0<BR />PHCO_28167 B.11.11.18 HP Array Manager/60 cumulative patch<BR />PHCO_35827 1.0 VERITAS VM Mgmt Service Provider Patch 06 <BR /><BR /># ps -ef <BR />...<BR />37 root 450 0 0 Jun 2 ? 0:00 dmprestored<BR /> 74 root 1597 1 0 Jun 2 ? 0:02 sbin/hostwatchdog<BR /> 124 root 2005 1 0 Jun 2 ? 0:00 /usr/sbin/stm/uut/bin/tools/monitor/RemoteMonitor<BR /><BR />Attached is the swlist and process id's present on the system. Fri, 13 Jun 2008 20:57:50 GMT https://community.hpe.com/t5/operating-system-hp-ux/figuring-out-the-process-using-the-devices/m-p/4216535#M326869 Dineshkumar Surpur 2008-06-13T20:57:50Z Re: figuring out the process using the devices https://community.hpe.com/t5/operating-system-hp-ux/figuring-out-the-process-using-the-devices/m-p/4216536#M326870 Can somebody help me to figure out which process is causing the fibre channel driver to cause login and logout so many times from the traget. Mon, 16 Jun 2008 16:05:04 GMT https://community.hpe.com/t5/operating-system-hp-ux/figuring-out-the-process-using-the-devices/m-p/4216536#M326870 Dineshkumar Surpur 2008-06-16T16:05:04Z Re: figuring out the process using the devices https://community.hpe.com/t5/operating-system-hp-ux/figuring-out-the-process-using-the-devices/m-p/4216537#M326871 Hi,<BR /><BR />can you see the corresponding lines in syslog about your problem ? You can see which daemon is checking devices.<BR /><BR />Kenan. Mon, 16 Jun 2008 16:50:57 GMT https://community.hpe.com/t5/operating-system-hp-ux/figuring-out-the-process-using-the-devices/m-p/4216537#M326871 Kenan Erdey 2008-06-16T16:50:57Z