I have a HA setup with a two multpathed ZFS pools that can be imported into 
two hosts, with pacemaker and corosync.

 In a typically configuration Zpool1 is on host 1 and zpool2 is on host b. 
on failover Zpool1 and Zpool 2 will be on host 2.

tthe setup is very similar to as described here
https://github.com/ewwhite/zfs-ha/wiki

my options for backup of this are
1)  back up the NFS share from a file daemon on a remote server

2)  back up the zfs pool directly

if backing up the zfs pool directly it makes sense to configure a file 
daemon for each pool that travels with it in the pacemaker resources, 
starting after the zfs pool and stopping before zfs pool does.

I would prefer to back up the pool directly because of the extended file 
attributes avalable and the more performant backup speeds

I cant find a way to make two file daemons start on the same host and not 
interfere. I have tried editing the systemd files and config directorys of 
them. There is no documentation on this, has anyone got any config files 
that would allow this?





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