Note: "permalinks" may not be as permanent as we would like,
direct links of old sources may well be a few messages off.
For this project I'll use v8 As I would like to use just one big resource, I don't think v9 would be able to rebalance a single resource across 4 or 5 nodes Il 11 ott 2017 10:48 PM, "Yannis Milios" <yannis.milios at gmail.com> ha scritto: > 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/20171011/4f10e0d4/attachment.htm>