Unable to delete dataset

[hysel]

Hi

I am trying to delete a dataset and I can't make it to work.

I am running the latest version (12.0-U4.1).

I have tried the following without success:

1. GUI - Delete data set:
   
   Code:

   [EFAULT] Failed to delete dataset: cannot unmount '/mnt/FR4G/Media': unmount failed

2. CLI:
   
   Code:

   root@truenas[~]# root@truenas[~]# zfs list | grep MediaFR4G/Media 205K 16.7T 205K /mnt/FR4G/Media
   root@truenas[~]# zfs destroy -f FR4G/Media
   cannot unmount '/mnt/FR4G/Media': unmount failed
   root@truenas[~]# zfs destroy -f mnt/FR4G/Media
   cannot open 'mnt/FR4G/Media': dataset does not exist
   root@truenas[~]# rm -rf /mnt/FR4G/Media
   rm: /mnt/FR4G/Media: Device busy
   

I checked and there is no active share for this device (SMB/nfs)

Any ideas?

Thanks in advance

Itamar

 

[Patrick M. Hausen]

lsof might help. Other than that, reboot, then try again.

 

[hysel]

lsof might help. Other than that, reboot, then try again.

Thanks, I tried that and it didn't work

Code:

root@truenas[~]# lsof | egrep '^COMMAND|/mnt' | grep Media
lsof: WARNING: compiled for FreeBSD release 12.0-RELEASE; this is 12.2-RELEASE-p6.
root@truenas[~]# lsof | grep Media
lsof: WARNING: compiled for FreeBSD release 12.0-RELEASE; this is 12.2-RELEASE-p6.
root@truenas[~]# lsof | grep /mnt/FR4G/Media
lsof: WARNING: compiled for FreeBSD release 12.0-RELEASE; this is 12.2-RELEASE-p6.

Reboot didn't work as well :(

 

[Patrick M. Hausen]

lsof +D /mnt/FR4G/Media?

 

[hysel]

lsof +D /mnt/FR4G/Media?

Nope, nothing

Code:

root@truenas[~]# lsof +D /mnt/FR4G/Media
lsof: WARNING: compiled for FreeBSD release 12.0-RELEASE; this is 12.2-RELEASE-p6.

 

[Patrick M. Hausen]

zfs list -t all -r FR4G/Media?

 

[hysel]

zfs list -t all -r FR4G/Media?

Code:

root@truenas[~]# zfs list -t all -r FR4G/Media
NAME         USED  AVAIL     REFER  MOUNTPOINT
FR4G/Media   205K  16.7T      205K  /mnt/FR4G/Media

 

[Patrick M. Hausen]

Strange ... sorry, out of ideas.

 

[hysel]

Strange ... sorry, out of ideas.

Thanks anyways, I will keep on digging

 

[sretalla]

rm -rf /mnt/FR4G/Media

You can't rm a dataset.

zfs destroy FR4G/Media should do it, but the unmount seems not to work, so maybe a reboot first?

How about zfs unmount FR4G/Media ?

 

[hysel]

You can't rm a dataset.

zfs destroy FR4G/Media should do it, but the unmount seems not to work, so maybe a reboot first?

How about zfs unmount FR4G/Media ?

Ye I was being silly

doesn't work

Code:

root@truenas[~]# zfs destroy FR4G/Media
cannot unmount '/mnt/FR4G/Media': unmount failed
root@truenas[~]# zfs unmount FR4G/Media
cannot unmount '/mnt/FR4G/Media': unmount failed
root@truenas[~]# zfs destroy -f FR4G/Media
cannot unmount '/mnt/FR4G/Media': unmount failed

 

[sretalla]

zfs unmount -f FR4G/Media ?

 

[hysel]

zfs unmount -f FR4G/Media ?

Code:

root@truenas[~]# zfs unmount -f FR4G/Media
cannot unmount '/mnt/FR4G/Media': unmount failed

 

[sretalla]

Did you try the reboot?

 

[hysel]

zfs unmount -f FR4G/Media ?

Multiple times...

 

[sretalla]

zfs unshare FR4G/Media ?

 

[hysel]

zfs unshare FR4G/Media ?

root@truenas[~]# zfs unshare FR4G/Media
cannot unshare 'FR4G/Media': legacy share
use exports(5) or smb.conf(5) to unshare this filesystem

But I don't have an SMB share on this folder:

Code:

root@truenas[~]# smbstatus

Samba version 4.12.15
PID     Username     Group        Machine                                   Protocol Version  Encryption           Signing
----------------------------------------------------------------------------------------------------------------------------------------

Service      pid     Machine       Connected at                     Encryption   Signing
---------------------------------------------------------------------------------------------
No locked files

 

[Patrick M. Hausen]

Can you stop all sharing services, then try again? Just to make sure?

You don't have a shell open with that dataset as your current working directory, do you?

 

[sretalla]

You don't have a shell open with that dataset as your current working directory, do you?

With multiple reboots, I would hope not.

 

[hysel]

Can you stop all sharing services, then try again? Just to make sure?

You don't have a shell open with that dataset as your current working directory, do you?

Tried that, it just being stubborn