Create storage from disk with "Device mapper" usage

[iamkarlson]

Hi,
I've created a wrong storage from my disk and now I'm trying to create a directory storage. However, I can't do this because my disk got to the state when it's marked as "Device mapper". It has no partition or data or whatever. How can I create a directory from this disk?

 

[Richard]

Hi,
I've created a wrong storage from my disk and now I'm trying to create a directory storage. However, I can't do this because my disk got to the state when it's marked as "Device mapper". It has no partition or data or whatever. How can I create a directory from this disk?

Reinitialize it with GPT. If not possible via GUI use command line utility "parted".

 

[fernandosl]

hello
here is my lsblk output... it seems to be some data in sdb, and it's marked as ´Device Mapper´. So my question is how to completely clean the disk info and reuse it for zfs storage, as sdc. Thank you in advance

 lsblk
NAME                             MAJ:MIN RM   SIZE RO TYPE MOUNTPOINT
sda                                8:0    0 232.9G  0 disk
├─sda1                             8:1    0  1007K  0 part
├─sda2                             8:2    0   512M  0 part
└─sda3                             8:3    0 232.4G  0 part
  ├─pve-swap                     253:5    0     8G  0 lvm  [SWAP]
  ├─pve-root                     253:6    0    58G  0 lvm  /
  ├─pve-data_tmeta               253:7    0   1.5G  0 lvm 
  │ └─pve-data                   253:9    0 147.4G  0 lvm 
  └─pve-data_tdata               253:8    0 147.4G  0 lvm 
    └─pve-data                   253:9    0 147.4G  0 lvm 
sdb                                8:16   0 931.5G  0 disk
├─lvm--thin-lvm--thin_tmeta      253:0    0   120M  0 lvm 
│ └─lvm--thin-lvm--thin-tpool    253:2    0 931.3G  0 lvm 
│   ├─lvm--thin-lvm--thin        253:3    0 931.3G  0 lvm 
│   └─lvm--thin-vm--101--disk--0 253:4    0    32G  0 lvm 
└─lvm--thin-lvm--thin_tdata      253:1    0 931.3G  0 lvm 
  └─lvm--thin-lvm--thin-tpool    253:2    0 931.3G  0 lvm 
    ├─lvm--thin-lvm--thin        253:3    0 931.3G  0 lvm 
    └─lvm--thin-vm--101--disk--0 253:4    0    32G  0 lvm 
sdc                                8:32   0 931.5G  0 disk