[DRBD-user] [DRBD-announce] linstor-server 1.10.0 release

Yannis Milios yannis.milios at gmail.com
Tue Nov 10 21:30:18 CET 2020


Quick question, just wondering how will "auto-evict" affect a 3 node
linstor cluster with a replica number of 2? Say that node1 goes down for
more than an 1h, linstor will try to replace its drbd resources to either
node2 or node3 assuming that the redundacy level falls below 2 and there's
enough free space in the backing device on remaining nodes (will diskless
clients count in this case?).

How will linstor respond in the case where node1 comes back online?  Will
it just restore back drbd resources on it ? or it will just reject that
node from being a part of the cluster and in this case the node will have
to be rejoined to the cluster.

Thank you,

On Mon, 9 Nov 2020 at 11:16, Rene Peinthor <rene.peinthor at linbit.com> wrote:

> Hi!
> This release brings 2 new added features, auto-evict and configurable ETCD
> prefixes:
> Auto-Evict:
> If a satellite has no connection to the controller for more than an hour,
> the controller will mark that node as EVICTED and remove all its
> DRBD-resources. Should this cause the total number of replicas for those
> resources to fall below a user-set minimum, it will then try to place new
> replicas on other satellites to keep enough replicas available.
> ETCD-prefixes:
> You can now configure the used ETCD prefix within the linstor.toml file,
> of course this needs to be done before the first start of the controller.
> As a little drawback(cleanup) of this change, it isn't possible anymore to
> directly upgrade ETCD backed Linstor-Controller installation from a version
> prior < 1.4.3. If you have such a situation
> upgrade to 1.9.0 first and then to 1.10.0.
> linstor-server 1.10.0
> --------------------
>  * Added auto-evict feature
>  * ETCD prefix is now configurable (migration only works now starting from
> version 1.4.3)
>  * Block IO can now be throttled also by iops
>  * Fixed REST-API single snapshot filtering
>  * Fixed drbd-events2 parsing race condition
>  * Fixed toggle-disk doesn't work if an unrelated node is offline
>  * Fixed race-condition in auto-tiebreaker
>  * Fixed usage of wait for snapshot-shipping
>  * REST-API version 1.5.0
> https://www.linbit.com/downloads/linstor/linstor-server-1.10.0.tar.gz
> Linstor PPA:
> https://launchpad.net/~linbit/+archive/ubuntu/linbit-drbd9-stack
> Cheers,
> Rene
> _______________________________________________
> drbd-announce mailing list
> drbd-announce at lists.linbit.com
> https://lists.linbit.com/mailman/listinfo/drbd-announce
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