Ubuntu server 16.04.5 LTS has been running well with external USB drive for years but we've outgrown it. Trying to add a larger external USB drive before removing the old.
I have a four drive RAIDZ created in 2016. Ever since the create commands, it's auto-mounted at boot.
output of dmesg (hope this works)
I assume adding a drive altered the available list of drives and when zfs goes to grab them, doesn't find the right drives in the right order. But I don't know where to go to "hardwire" the assignment, in order for there to be no assumptions about which drives make the RAIDZ.
I have beginner skills at Ubuntu at best and would appreciate any insight and assitance. Thank you!
EDIT
With FDISK -l I've found that device assignment does change when I have both external USB drives attached. When I attach the new external USB drive and reboot, devices change as follows:
sda -> sdf; sdb -> sda; sdc -> sdb; sdd -> sdc; sde -> sdd; sdf -> sde; sdg is the new drive
How do I overcome the dynamic assignment of a device name like this so my mounts, etc. are always correct?
Thanks!