[ClusterLabs] Antw: [EXT] Stonith failing

Andrei Borzenkov arvidjaar at gmail.com
Wed Jul 29 03:46:09 EDT 2020

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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