Multiple file daemons per host

[GB]

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?

[GB]

The solution:

given each pool has a seperate IP adress through pacemaker

  FDAddresses  = {
    ip = { addr = XX.XXX.XXX.XXX; port = 9102; }
  }

add this to the filedaemon config

and add pacemaker filedaemon  resource to zfs pool group

then the syetemd config of the pools filedaemon has to be modified, you need a new /etc/bareos-POOLNAME folder for each pool

[Unit]
Description=Bareos File Daemon service tank03
Documentation=man:bareos-fd(8)
Requires=network.target nss-lookup.target time-sync.target
After=network-online.target nss-lookup.target remote-fs.target time-sync.target

[Service]
Type=simple
User=root
Group=bareos
WorkingDirectory=/var/lib/bareos
ExecStart=/usr/sbin/bareos-fd -c /etc/bareos-POOLNAME-f
SuccessExitStatus=0 15
Restart=on-failure
# IOSchedulingClass=idle

[Install]
Alias=bareos-fd-POOLNAME.service
WantedBy=multi-user.target

this setup works great, much better than backing up through NFS and you get acess to snapshots