Note: "permalinks" may not be as permanent as we would like,
direct links of old sources may well be a few messages off.
Yes, I failed over the nodes.. (see my original post for full details). I have everything working perfectly with LVM on top of DRBD and was hopping RAID6 on top of DRBD would be similar. The problem is that the RAID signatures don't appear to be mirrored, perhaps because they are in super blocks and not part of the data DRBD replicates... Don't know. Also, from this thread and related research online, DRBD based RAID16 does not appear to a configuration that anyone else has tried.... Never good to be the first ;-) Tim On May 30, 2008, at 10:12 AM, drbd at bobich.net wrote: > On Fri, 30 May 2008, Tim Nufire wrote: > >> What I really want is RAID16 since it has incredible reliability >> along with the low impact failure modes of RAID1/RAID10... Which >> brings me back to my original question.... Can I create a RAID6 >> array on top of DRBD devices. I already have the DRBD mirrors setup >> and know how to create RAID10 using LVM. I can use mdadm to create >> a RAID5/6 array on top of DRBD volumes and everything works on the >> initial node. The problem is that I can't assemble the array on the >> mirrored node :-/ > > Have you failed the DRBD devices over to the backup node before re- > assembling the array (e.g. by shutting down the primary node)? If > you are running in primary/secondary, the secondary devices won't > work until they become primary. > > I don't think you can run DRBD in primary/primary if you are running > md on top. > > Gordan > _______________________________________________ > drbd-user mailing list > drbd-user at lists.linbit.com > http://lists.linbit.com/mailman/listinfo/drbd-user