Re: How to automatically add a nbd to a raid1?

"Also sprach Michael Rendell:"
>   I'd like to set up a raid1 disk that has a local disk and a remote (enbd)
> disk.  Was wondering how to set things up so that, on/after reboot, the enbd
> device gets added to the raid when the connection to the enbd-server is made?

There are scripts to handle that in the distribution package. I'm
travelling today but I'll put up a complete answer later (about
midnight CET).

> The raid may already have started in degraded mode (especially likely
> if the network or server is down when the client machine boots).
> Running "mdadm --re-add /dev/mdNN /dev/ndA" works, but would like this to be
> done automatically when the connection is made: is there a way to run
> a program/script when a connection is made (like mdadm --monitor)?

mdadm --monitor works fine. As I recall that's what is used. ENBD
signals udev when conditions change.

Peter