Theses are the minutes from the Hotplug SIG con call held last week. My apologies for sending out them so late but I took a few days off. Attendees: Renier Morales, IBM Tariq Shureih, Intel Randall Loomis, Wind River Chris Johnson, SUN Mary Edie Meredith, OSDL Martine Silbermann, HP * Report from last Face-2-Face, It was the first time since the creation of the SIG that we had a DCL tech board F2F. At that F2F discussions focused around the charter of the SIG and we reach the conclusion that the hotplug SIG should "make hotplug consistently and easily available". This means that we're not just limiting ourselves to the kernel layer but address all hotplug related issues from the hardware to the user level by bringing the existing pieces together and adding "the glue" when needed. * Hotplug at the HPI/IPMI level, The rest of the meeting was dedicated to getting this initiative going. Intro to OpenHPI: Tariq provided an introduction/background presentation on OpenHPI. He mentioned that HPI supports 2 models for hotswapping: * a managed model that tracks the state of the resource (present, active, inactive, unhealthy,...). * a simplified model that only knows if the resource is present or not. Renier described how the Blade Center's SNMP implementation currently only supports the simplified model but a full managed model support is expected by March of next year. IBM's IPMI implementation currently supports both models. We had a discussion on the merits of IPMI direct versus OpenIPMI, specifically from a performance point-of-view. The presentations that Tariq made at the SAF/DCL meeting in Japan can be found at http://developer.osdl.org/cherry/f2f/japan/ Useful links for OpenHPI are: http://openhpi.sourceforge.net www.openhpi.org AR: Tariq to provide links or copies of other presentations or papers that he feels would be useful to this group. Testing: IBM has done a lot of testing on their code; those tests however are more HPI specific. For every release functional testing has been done as well as regression testing. It seems that hotplug features have been stable for a while. Why use OpenHPI? HPI is supposed to become the common interface between all platform management interfaces. OpenHPI is currently the only implementation of HPI that runs on a variety of architectures. It supports both IPMI and IPMI direct. SuSE has already integrated OpenHPI in their releases and Red Hat and MontaVista are planning on doing it for their CGL releases. OpenHPI supports plugins for IPMI, SNMP, watchdog and sysfs. OpenHPI also provides an SNMP subagent that gives a remote description of HPI resources that are currently running on the system. As of today there's a command line shell utility that exposes all HPI utilities but there is a GUI interface being developed that should be named OpenHPIView and be available soon. AR: Tariq and Randall to provide inside on how the SIG can help to facilitate hotplug management at the platform level. Next meeting: December 14th, 2004 at 11:00am Pacific, 2:00pm Eastern Thanks for your participation. Martine J. Silbermann
