[6.12.4] [ZFS] Lost data while moving across shares/datasets.

11 hours ago, JorgeB said:

This command would not remove a dataset, something missing from your description.

Afraid it actually did, it worked for all of the below listed datasets:

• /mnt/zdata/cache
• /mnt/zdata/downloads
• /mnt/zdata/isos
• /mnt/zdata/media

 

I will try to replicate this with a dummy dataset.
 

Please refer to attached screen-shot, clearly shows dummy_old share as non-exclusive and dummy as exclusive (on zdata)

All steps are listed below:

root@UnraidZFS:/mnt/user# mv dummy_old/* dummy/.

root@UnraidZFS:/mnt/user# rm -rf dummy_old/

root@UnraidZFS:/mnt/user# zfs list
NAME                USED  AVAIL     REFER  MOUNTPOINT
zdata              5.47T  12.6T      805G  /mnt/zdata
zdata/dummy        1.04M  12.6T     1.04M  /mnt/zdata/dummy

5 hours ago, sabertooth said:

dummy_old share

If dummy_old was deleted with rm it could not have been a zfs dataset, I understood you were staring with an existing zfs dataset?

 

You can check for yourself:
 

zfs create zdata/dummy_old
rm -rf /mnt/zdata/dummy_old

 

This will fail, and the dataset will not be deleted.

  Afraid it indeed was a zfs dataset since all my shares were on zfs in 6.11.5. Please remember that the share initially was created with Primary Storage set to Array containing a link to dataset with same name as the share. After migration, I did change the Primary Storage to zpool which probably explains the yellow warning symbol next to it. I suggest you try out the above listed steps.

 

 

28 minutes ago, sabertooth said:

I suggest you try out the above listed steps.

How, if you did not post in detail how the dummy_old share was created?

 

You can also post the diags after the dummy_old was showing as not exclusive, those will show what the problem is.