[ClusterLabs] Antw: [EXT] Stonith failing

[Andrei Borzenkov]

On Wed, Jul 29, 2020 at 9:01 AM Gabriele Bulfon <gbulfon at sonicle.com> wrote:

> That one was taken from a specific implementation on Solaris 11.
> The situation is a dual node server with shared storage controller: both
> nodes see the same disks concurrently.
> Here we must be sure that the two nodes are not going to import/mount the
> same zpool at the same time, or we will encounter data corruption:
>

ssh based "stonith" cannot guarantee it.



> node 1 will be perferred for pool 1, node 2 for pool 2, only in case one
> of the node goes down or is taken offline the resources should be first
> free by the leaving node and taken by the other node.
>
> Would you suggest one of the available stonith in this case?
>
>

IPMI, managed PDU, SBD ...

In practice, the only stonith method that works in case of complete node
outage including any power supply is SBD.
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