ChaliceLue

All right, thank you!

Thanks a lot for help. zfs list -t all NAME USED AVAIL REFER MOUNTPOINT cache 331G 2.23T 71.4M /mnt/cache cache/Code 215K 2.23T 215K /mnt/cache/Code cache/Photos 293M 2.23T 293M /mnt/cache/Photos cache/Public 4.25G 2.23T 4.25G /mnt/cache/Public cache/Videos 163K 2.23T 163K /mnt/cache/Videos cache/appdata 204G 2.23T 204G /mnt/cache/appdata cache/domains 51.6G 2.23T 24.4G /mnt/cache/domains cache/domains/Debian 140K 2.23T 140K /mnt/cache/domains/Debian cache/domains/DownloadMachine 140K 2.23T 140K /mnt/cache/domains/DownloadMachine cache/domains/DownloadMachineD 9.44G 2.23T 9.44G /mnt/cache/domains/DownloadMachineD cache/domains/GameMachine 140K 2.23T 140K /mnt/cache/domains/GameMachine cache/domains/GameServer 17.7G 2.23T 17.7G /mnt/cache/domains/GameServer cache/isos 13.8G 2.23T 13.8G /mnt/cache/isos cache/system 57.1G 2.23T 57.1G /mnt/cache/system cache/domains/Debian cache/domains/DownloadMachine etc. are the virtual machine directories mentioned above.

Yes, the domains folder is on a ZFS-based file system

Hello everyone, recently I ran into a problem. When I check the /mnt/user/domain directory, I find that the virtual machine directories I deleted before (such as "DM") are still there. I tried to use the rm -r DM command to delete it, but it prompted me device or resource busy . After checking multiple times, I found through mount | grep DM that Unraid mounted vdisk1.img under the DM directory at cache/domains/DM/vdisk1.img, which caused me to be unable to delete it. After I used umount /mnt/user/domains/DM/vdisk1.img to unmount it, I was able to delete the DM folder. Just when I thought the problem was solved, I found that once I restarted the array, unraid would automatically create the /mnt/user/domains/DM directory and /mnt/user/domains/DM/vdisk1.img file, and continue to mount it at the original location, even though I had already deleted the DM VM. I checked the files under boot, but couldn't find how to delete the mount settings. After using unraid, I created 8 virtual machines and deleted them all, and 4 of the virtual machines had the above situation. I want to ask what caused this situation? Thanks for everyone's help!