On 04/08/16 11:44 PM, Andrei Borzenkov wrote: > 05.08.2016 02:33, Digimer пишет: >> On 04/08/16 07:21 PM, Dan Swartzendruber wrote: >>> On 2016-08-04 19:03, Digimer wrote: >>>> On 04/08/16 06:56 PM, Dan Swartzendruber wrote: >>>>> I'm setting up an HA NFS server to serve up storage to a couple of >>>>> vsphere hosts. I have a virtual IP, and it depends on a ZFS resource >>>>> agent which imports or exports a pool. > > ... > >> >> Note; If you lose power to the mainboard (which we've seen, failed >> mainboard voltage regulator did this once), you lose the IPMI (DRAC) >> BMC. This scenario will leave your cluster blocked without an external >> secondary fence method, like switched PDUs. >> > > As in this case there is shared storage (at least, so I understood), > using persistent SCSI reservations or SBD as secondary channel can be > considered.
Yup. That would be fabric fencing though, or are you talking about using it under watchdog timers? If fabric, then my worry is always a panic'ed admin clearing it without properly verifying the state of the lost node. With watchdog, it's fine, just slow. -- Digimer Papers and Projects: https://alteeve.ca/w/ What if the cure for cancer is trapped in the mind of a person without access to education? _______________________________________________ Users mailing list: Users@clusterlabs.org http://clusterlabs.org/mailman/listinfo/users Project Home: http://www.clusterlabs.org Getting started: http://www.clusterlabs.org/doc/Cluster_from_Scratch.pdf Bugs: http://bugs.clusterlabs.org