I am on TrueNAS Community Edition 25.10-RC.1 - Goldeye
I had a mirror of 2 drives and bought 6 more (all 8 are 8 TB). So I read somewhere that I could create a degraded RAIDZ2 with 1 VDEV of width 8 but only start it with the 6 drives I don’t have in a pool. Then I would copy the data over and remove the mirror and then add those two drives into the RAIDZ2 and zfs re-balance. I could not figure out how to do this though. So I create a RAIDZ2 with 1 VDEV of width 6 and then used a replication task to copy over the mirrored pool to the RAIDZ2 pool.
All was swell, then I unset the apps pool from the mirror and then selected the new pool and clicked the button for “migrate apps.” Once it was completed I restarted it for good measure and then disconnected the mirror pool and extended one of the mirrored drives into the RAIDZ2 pool. After the restart, docker was no longer working with the error:
Failed to start docker for Applications: Docker service could not be started
So I went to unset the pool in apps but could not because it was “busy”. After some investigation I found that there was an .ix-apps folder in /mnt as well as in /mnt/pool/.ix-apps (my RAIDZ2 pool name). So I restarted TrueNAS, then quickly unset the pool before it could become busy, I then ran sudo rm -rf /mnt/.ix-apps which removed the “erroneous” (I think) apps location. I then restarted the server again. I checked and the /mnt/.ix-apps location was gone but /mnt/pool/.ix-apps location was still in tact. I then set my apps pool to pool and it “succeeded”. But none of my apps were there. I then checked the filesystem and it had created the /mnt/.ix-apps location again. I tried to unset the pool but it was busy. I then repeated the process of restarting, unsetting the pool, removing the .ix-apps directory, and setting the app pool at least twice. I keep getting the same issue repeatedly. The docker service is never able to start.
TLDR: I migrated my apps via the TrueNAS UI from one pool to another and it created the .ix-apps directory outside of all pools. I am unable to move them into a pool. Any help would be greatly appreciated! I am willing to send logs if necessary, just guide me to what you need.