Thanks for your reply Lars, I got it all set up now.. I actually tried the first version once earlier,, without using the allocate function as I read somewhere that I shouldn't (need) to use it, so I didn't :) Thanks for pointing out I shouldn't use html formatting.. Will try to remember that in the future
Kind regards /Fredrik On Thu, Mar 28, 2013 at 4:43 PM, Lars Marowsky-Bree <[email protected]> wrote: > > On 2013-03-28T10:52:22, Fredrik Hudner <[email protected]> wrote: > > > > 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 > > I'm not sure what you mean by this. Yes, on each of the three physical > nodes, you need to add the same block devices. > > "same" meaning that they all need to be shared across the physical > nodes, which typically requires some SAN or iSCSI. If you have iSCSI, it > may be easier to run the iSCSI initiator directly in the VM. > > > 2/ map each block device to the other VM's > > Yes, you need to make these block devices available to all the VMs. > > > When I run *# sbd -d /dev/sdd list *(same for all devices) it only > > comes back with all the options I can use. > > That's not surprising. You need to call "create" first to initialize the > metadata. Otherwise, sbd thinks you're pointing it at a wrong device and > shows you the help ;-) > > (Admittedly, that isn't always useful, so I've cleaned that up now.) > > > 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)* > > This doesn't make a lot of sense. If you've run "allocate" on all > devices for a given node, all the other nodes should see the same slot > per device. > > But you're seeing one node on the first two devices, none on > the third; and it seems you've actually done more than you described, > namely sending a test message ;-) > > Try doing it in one step: > > sbd -d /dev/sde -d /dev/sdf -d /dev/sdd create > sbd -d /dev/sde -d /dev/sdf -d /dev/sdd allocate > > It is also quite helpful if devices have the same name on all nodes; you > may find using /dev/disk/by-id/ convenient for this use case. It cuts > down on confusion. > > Oh, and it is easier to read your mails and pastes if you don't use > HTML mail but standard mail formatting, indentation, and quoting. > Thanks! > > > Mit freundlichen Grüßen, > Lars > > -- > 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
