[Linux-HA] STONITH and IBM xSeries
alanr at unix.sh
Mon Mar 22 09:53:13 MST 2004
Jens Grigel wrote:
> Am Mon, 2004-03-22 um 14.59 schrieb Kenneth Geisshirt:
>>I have been looking at version 1.2.0 of Heartbeat. In the STONITH
>>directories I can't locate any info on IBM xSeries. Doesn't Heartbeat
>>have driver for these servers? How hard would it be to write one?
>>Thanks in advance
> i've build a stonith device for our IBM xSeries Linux-HA clusters some
> time ago. It works fine for us with heartbeat 1.0.4 and 1.2.0 under
> RedHat 8 and IBMs ASM/RSA/RSA2 management processors/adaptors, no
> support for the onboard ISMP. Solution is based on a rudimentary
> modified ssh stonith plugin calling a local IBM-mpcli ("management
> processor command line interface") script. That script uses the RS485
> serial bus between the management adaptors to logon to the other systems
> management adaptor and powercycles the remote system (hard poweroff +
> poweron). If you want to use the onboard ISMPs you need at least one
> RSA/RSA2 somewhere on the RSA485 serial bus. With some modifications to
> the scripts it should work, but I've never tried that because you rely
> on a third system for stonith or have different stonith scripts on the
> two systems in the cluster.
> Problem is that it doesn't work with RedHat 9 and probably also all
> RedHat Enterprise Versions (we have an open call for that confimed
> problem with IBM, they confimed also for SLES 8) due to a bug in mpcli
> (you can't anymore explicitly switch the power on for a system with
> In case you are interested I can give you some details.
mpcli can also just do a system reset, IIRC...
Alan Robertson <alanr at unix.sh>
"Openness is the foundation and preservative of friendship... Let me claim
from you at all times your undisguised opinions." - William Wilberforce
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