Note: "permalinks" may not be as permanent as we would like,
direct links of old sources may well be a few messages off.
Are you planning to use DRBD8 or DRBD9? DRBD8 is limited to 2 nodes(max 3). DRBD9 can scale to multiple nodes. For DRBD8 the most common setup is RAID -> DRBD -> LVM or RAID -> LVM -> DRBD It’s management is way easier than DRBD9. The most common DRBD9 setups are RAID -> LVM (thin or thick) -> DRBD or HDD -> ZFS (thin or thick) -> DRBD. Complicated management... On Wed, 11 Oct 2017 at 20:52, Gandalf Corvotempesta < gandalf.corvotempesta at gmail.com> wrote: > 2017-10-11 21:22 GMT+02:00 Adam Goryachev < > mailinglists at websitemanagers.com.au>: > > You can also do that with raid + lvm + drbd... you just need to create a > new > > drbd as you add a new LV, and also resize the drbd after you resize the > LV. > > I prefere to keep drbd as minimum. I'm much more familiar with LVM. > If not an issue, i prefere to keep the number of drbd resources as bare > minimum. > > > If both drives fail on one node, then raid will pass the disk errors up > to > > DRBD, which will mark the local storage as down, and yes, it will read > all > > needed data from remote node (writes are always sent to the remote node). > > You would probably want to migrate the remote node to primary as quickly > as > > possible, and then work on fixing the storage. > > Why should I migrate the remote node to primary? Any advantage? > > > Yes, it is not some bizarre configuration that has never been seen > before. > > You also haven't mentioned the size of your proposed raid, nor what size > you > > are planning on growing it to? > > Currently, I'm planning to start with 2TB disks. I don't think to go > over 10-12TB > > > Yes, you will always want multiple network paths between the two nodes, > and > > also fencing. bonding can be used to improve performance, but you should > > *also* have an additional network or serial or other connection between > the > > two nodes which is used for fencing. > > Ok. > > Any "bare-metal" distribution with DRBD or detailed guide on how to > implement HA? > Something like FreeNAS, or similiar. > _______________________________________________ > drbd-user mailing list > drbd-user at lists.linbit.com > http://lists.linbit.com/mailman/listinfo/drbd-user > -- Sent from Gmail Mobile -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://lists.linbit.com/pipermail/drbd-user/attachments/20171011/42bab630/attachment.htm>