Hi Marek, hi all, we just investigated this problem a little further while looking at the sources of fence_imm.
It seems that the IMM device does a soft shutdown despite documented differently. I can reproduce this with the ipmitool directly and also using ssh access. The only thing which seems to work in the expected rigorous way is the ipmi-command 'power reset'. But with this command I can't shutdown the server. I'll offer more informations when I get feedback to this behaviour. Best regards Andreas -----Ursprüngliche Nachricht----- Von: [email protected] [mailto:[email protected]] Im Auftrag von Marek Grac Gesendet: Montag, 15. April 2013 11:02 An: Andrew Beekhof Cc: General Linux-HA mailing list Betreff: Re: [Linux-HA] Behaviour of fence/stonith device fence_imm Hi, On 04/15/2013 04:17 AM, Andrew Beekhof wrote: > On 13/04/2013, at 12:21 AM, Andreas Mock <[email protected]> wrote: > >> Hi all, >> >> just played with the fence/stonith device fence_imm. >> (as part of pacemaker on RHEL6.x and clones) >> >> It is configured to use the action 'reboot'. >> This action seems to cause a graceful reboot of the node. >> >> My question. Is this graceful reboot feasible when the node >> gets unreliable or would it be better to power cycle the >> machine (off/on)? Yes, it will. For fence_imm the standard IPMILAN fence agent is used without additional options. It uses a method described by you: power off / check status / power on; it looks like that there are some changes in IMM we are not aware. Please fill a bugzilla for this issue, if you can do a proper non-graceful power off using ipmitools, please add it too. >> How can I achieve that the fence_imm is making a power cycle >> (off/on) instead of a "soft" reboot? >> Yes, you can use -M (method in STDIN/cluster configuration) with values 'onoff' (default) or 'cycle' (use reboot command on IPMI) m, _______________________________________________ Linux-HA mailing list [email protected] http://lists.linux-ha.org/mailman/listinfo/linux-ha See also: http://linux-ha.org/ReportingProblems _______________________________________________ Linux-HA mailing list [email protected] http://lists.linux-ha.org/mailman/listinfo/linux-ha See also: http://linux-ha.org/ReportingProblems
