[Solved] Unable to mount/delete partitions in Unassigned Devices

[PzrrL]

Hi there! I have been using UnRaid for awhile already, and I have 2 idle disks would like to preclear them first. iirc, I did once to them but I am not sure so I would like to preclear them again. But then I am having issue while dealing with sdj and sdm.

 

 

When I use binhex-preclear docker to preclear sdj and sdm with command below:

preclear_binhex.sh -f -M 4 /dev/sdj

I got an error below:

blockdev: ioctl error on BLKRRPART: Device or resourece busy

So I tried to delete the partitions in UD for sdj and sdm, (destructive mode enabled), and got the errors as below:

Aug 6 11:04:09 UnRaid unassigned.devices: Removing partition '1' from disk '/dev/sdj'.
Aug 6 11:04:09 UnRaid unassigned.devices: Remove parition failed result 'Error: Partition doesn't exist. '
Aug 6 11:04:23 UnRaid unassigned.devices: Removing partition '1' from disk '/dev/sdm'.
Aug 6 11:04:23 UnRaid unassigned.devices: Remove parition failed result 'Error: Partition doesn't exist. '

 

P.S. I did all this while the array has started, but this should not be a problem.

 

My goal overall is just to preclear both of them, then take out from the UnRaid, may I know how? Thanks!

Edited August 6, 2020 by PzrrL
Solved

[JorgeB]

Try:

 

wipefs -a /dev/sdX1

 

if successful then

 

wipefs -a /dev/sdX

 

[PzrrL]

1 hour ago, johnnie.black said:

Try:

 

wipefs -a /dev/sdX1

 

if successful then

 

wipefs -a /dev/sdX

 

Thanks. I tried and the following is the output (seems not working with the 2nd command😞

root@UnRaid:~# wipefs -a /dev/ sdj1
wipefs: error: /dev/: probing initialization failed: Is a directory
root@UnRaid:~# wipefs -a /dev/sdm1
/dev/sdm1: 4 bytes were erased at offset 0x00000000 (xfs): 58 46 53 42
root@UnRaid:~# wipefs -a /dev/sdj
/dev/sdj: 2 bytes were erased at offset 0x000001fe (dos): 55 aa
/dev/sdj: calling ioctl to re-read partition table: Device or resource busy
root@UnRaid:~# wipefs -a /dev/sdm
/dev/sdm: 2 bytes were erased at offset 0x000001fe (dos): 55 aa
/dev/sdm: calling ioctl to re-read partition table: Device or resource busy
root@UnRaid:~# 

Now, both of them are not mountable (with greyed mount button) in Unassigned Devices.

Edited August 6, 2020 by PzrrL
Add one more line at the end

[JorgeB]

sdj1 wasn't successful, so you shouldn't have run sdj, though it won't matter much, reboot and try running preclear again.

[PzrrL]

53 minutes ago, johnnie.black said:

sdj1 wasn't successful, so you shouldn't have run sdj, though it won't matter much, reboot and try running preclear again.

Thanks! After another rebooting, they shown as mountable, and I am able to preclear them now. Thank you so much!