On Tue, Mar 26, 2013 at 4:42 PM, Lars Marowsky-Bree <[email protected]> wrote:
> On 2013-03-26T08:10:06, Fredrik Hudner <[email protected]> wrote: > > > Hi, > > I have a question about the setup sbd which I think belong to this forum > > > > I have 3 nodes. Two active pacemaker nodes and one kind of quorum node. > > I would like to setup sbd as fencing device between these 3 nodes that > are > > running in VMware instances. > > > > Best demonstrated practise is the use of 3 devices (disks) but I'm not > sure > > about the actual setup. > > You must map the same 1 to 3 block devices to the VMs so that concurrent > shared read/write access is allowed. > > Also, if the block devices are not independent but partitions on the > same disk, that's not worth bothering with. > > If they're all on the same host, that's a bit pointless, but you knew > that ;-) > > How are you backing the devices? SAN, FC, iSCSI? If it's iSCSI, you > could decide to directly run the iSCSI initiator in the guest. > > > I have read the http://linux-ha.org/wiki/SBD_Fencing but it only help > me > > so far > > That's because it describes how to configure sbd, not your storage layer > ;-) > Thanks Lars, > The backing device is over SAN and the devices are all independent. > > So when you say, map the same 1 to 3 block devices my approach should be > correct ? > 1/ add 1 block device on each of the 3 nodes, e.g /dev/sdd, /dev/sde and /dev/sdf 2/ map each block device to the other VM's When I run *# sbd -d /dev/sdd list *(same for all devices) it only comes back with all the options I can use. I then run *# sbd -d /dev/sde allocate <nodename>* for each device and I can see e.g on testclu01 (node1) *# sbd -d /dev/sde list * * 0 testclu02 test testclu01* *but on /dev/sdd # sbd -d /dev/sdd list 0 testclu01 clear* *# sbd -d /dev/sdf list* (empty) on testclu03 (node3): *# sbd -d /dev/sde list* *0 testclu01 clear # sbd -d /dev/sdf list **0 testclu02 test testclu01* *# sbd -d /dev/sdd list *(empty)* * So I'm not sure if this is ok or not ? > Architect Storage/HA > SUSE LINUX Products GmbH, GF: Jeff Hawn, Jennifer Guild, Felix > Imendörffer, HRB 21284 (AG Nürnberg) > "Experience is the name everyone gives to their mistakes." -- Oscar Wilde > > _______________________________________________ > Linux-HA mailing list > [email protected] > http://lists.linux-ha.org/mailman/listinfo/linux-ha > See also: http://linux-ha.org/ReportingProblems > -- Fredrik Hudner Grosse Pfahlstr 12 30161 Hannover Germany Tel: 0511-642 09 548 Mob: 0173-254 39 29 _______________________________________________ Linux-HA mailing list [email protected] http://lists.linux-ha.org/mailman/listinfo/linux-ha See also: http://linux-ha.org/ReportingProblems
