I have been previously installing Ubuntu on ZFS (root-on-zfs) and since then I’ve transitioned to Fedora, on ext4+lvm, to avoid much complication and hassle. It is also not necessary for me to have all those nice ZFS features on root.
When I was installing Fedora I have reformatted existing drive. Unfortunately although new GPT should’ve been created it seems like I’ve missed something and root of my device was identified as ZFS member:
nvme0n1 zfs_member rpool 6746866517683744678
├─nvme0n1p1 vfat 0714-E22E 579.2M 3% /boot/efi
├─nvme0n1p2 ext4 boot 7846c247-a35f-4093-b4ef-e860a734b507 671.4M 24% /boot
└─nvme0n1p3 crypto_LUKS f780afb3-06ba-4a67-b502-e44ef0799a95
└─luks-f780afb3-06ba-4a67-b502-e44ef0799a95 LVM2_member dU20fV-Y679-pJ8A-tZaK-pMPc-eOZA-AlsjaJ
└─fedora-root ext4 root a2bd9c66-25a1-48ed-8bd9-e66d1691ffa1 67.4G 32% /
Although in practice that doesn’t mean much it was still annoying to me, so I decided to cleanup. Luckily whole process isn’t hard with wipefs utility.
First I inspected the signatures on the drive:
[root@bequiet ~]# wipefs /dev/nvme0n1
DEVICE OFFSET TYPE UUID LABEL
nvme0n1 0x1bf293f000 zfs_member 6746866517683744678 rpool
nvme0n1 0x1bf293e000 zfs_member 6746866517683744678 rpool
nvme0n1 0x1bf293d000 zfs_member 6746866517683744678 rpool
nvme0n1 0x1bf293c000 zfs_member 6746866517683744678 rpool
nvme0n1 0x1bf293b000 zfs_member 6746866517683744678 rpool
nvme0n1 0x1bf293a000 zfs_member 6746866517683744678 rpool
nvme0n1 0x1bf2939000 zfs_member 6746866517683744678 rpool
nvme0n1 0x1bf2938000 zfs_member 6746866517683744678 rpool
nvme0n1 0x1bf2937000 zfs_member 6746866517683744678 rpool
nvme0n1 0x1bf2936000 zfs_member 6746866517683744678 rpool
nvme0n1 0x1bf2935000 zfs_member 6746866517683744678 rpool
nvme0n1 0x1bf2934000 zfs_member 6746866517683744678 rpool
nvme0n1 0x1bf2933000 zfs_member 6746866517683744678 rpool
nvme0n1 0x1bf2932000 zfs_member 6746866517683744678 rpool
nvme0n1 0x1bf2931000 zfs_member 6746866517683744678 rpool
nvme0n1 0x1bf2930000 zfs_member 6746866517683744678 rpool
nvme0n1 0x1bf292f000 zfs_member 6746866517683744678 rpool
nvme0n1 0x1bf292e000 zfs_member 6746866517683744678 rpool
nvme0n1 0x1bf292d000 zfs_member 6746866517683744678 rpool
nvme0n1 0x1bf292c000 zfs_member 6746866517683744678 rpool
nvme0n1 0x1bf292b000 zfs_member 6746866517683744678 rpool
nvme0n1 0x1bf292a000 zfs_member 6746866517683744678 rpool
nvme0n1 0x1bf2929000 zfs_member 6746866517683744678 rpool
nvme0n1 0x1bf2928000 zfs_member 6746866517683744678 rpool
nvme0n1 0x1bf2927000 zfs_member 6746866517683744678 rpool
nvme0n1 0x1bf2926000 zfs_member 6746866517683744678 rpool
nvme0n1 0x1bf2925000 zfs_member 6746866517683744678 rpool
nvme0n1 0x1bf2924000 zfs_member 6746866517683744678 rpool
nvme0n1 0x1bf2923000 zfs_member 6746866517683744678 rpool
nvme0n1 0x1bf2922000 zfs_member 6746866517683744678 rpool
nvme0n1 0x1bf2921000 zfs_member 6746866517683744678 rpool
nvme0n1 0x1bf2920000 zfs_member 6746866517683744678 rpool
nvme0n1 0x200 gpt
nvme0n1 0x1bf2975e00 gpt
nvme0n1 0x1fe PMBR Then I have deleted those matching “zfs_member” type. Note that it is advised to first try without -a and -f options just to see if you’re properly matching those signatures. Option -f was there to do it without partition reload as I was booted from that very same system.
[root@bequiet ~]# wipefs -a -f -t zfs_member /dev/nvme0n1
/dev/nvme0n1: 8 bytes were erased at offset 0x1bf293f000 (zfs_member): 0c b1 ba 00 00 00 00 00
/dev/nvme0n1: 8 bytes were erased at offset 0x1bf293e000 (zfs_member): 0c b1 ba 00 00 00 00 00
/dev/nvme0n1: 8 bytes were erased at offset 0x1bf293d000 (zfs_member): 0c b1 ba 00 00 00 00 00
/dev/nvme0n1: 8 bytes were erased at offset 0x1bf293c000 (zfs_member): 0c b1 ba 00 00 00 00 00
/dev/nvme0n1: 8 bytes were erased at offset 0x1bf293b000 (zfs_member): 0c b1 ba 00 00 00 00 00
/dev/nvme0n1: 8 bytes were erased at offset 0x1bf293a000 (zfs_member): 0c b1 ba 00 00 00 00 00
/dev/nvme0n1: 8 bytes were erased at offset 0x1bf2939000 (zfs_member): 0c b1 ba 00 00 00 00 00
/dev/nvme0n1: 8 bytes were erased at offset 0x1bf2938000 (zfs_member): 0c b1 ba 00 00 00 00 00
/dev/nvme0n1: 8 bytes were erased at offset 0x1bf2937000 (zfs_member): 0c b1 ba 00 00 00 00 00
/dev/nvme0n1: 8 bytes were erased at offset 0x1bf2936000 (zfs_member): 0c b1 ba 00 00 00 00 00
/dev/nvme0n1: 8 bytes were erased at offset 0x1bf2935000 (zfs_member): 0c b1 ba 00 00 00 00 00
/dev/nvme0n1: 8 bytes were erased at offset 0x1bf2934000 (zfs_member): 0c b1 ba 00 00 00 00 00
/dev/nvme0n1: 8 bytes were erased at offset 0x1bf2933000 (zfs_member): 0c b1 ba 00 00 00 00 00
/dev/nvme0n1: 8 bytes were erased at offset 0x1bf2932000 (zfs_member): 0c b1 ba 00 00 00 00 00
/dev/nvme0n1: 8 bytes were erased at offset 0x1bf2931000 (zfs_member): 0c b1 ba 00 00 00 00 00
/dev/nvme0n1: 8 bytes were erased at offset 0x1bf2930000 (zfs_member): 0c b1 ba 00 00 00 00 00
/dev/nvme0n1: 8 bytes were erased at offset 0x1bf292f000 (zfs_member): 0c b1 ba 00 00 00 00 00
/dev/nvme0n1: 8 bytes were erased at offset 0x1bf292e000 (zfs_member): 0c b1 ba 00 00 00 00 00
/dev/nvme0n1: 8 bytes were erased at offset 0x1bf292d000 (zfs_member): 0c b1 ba 00 00 00 00 00
/dev/nvme0n1: 8 bytes were erased at offset 0x1bf292c000 (zfs_member): 0c b1 ba 00 00 00 00 00
/dev/nvme0n1: 8 bytes were erased at offset 0x1bf292b000 (zfs_member): 0c b1 ba 00 00 00 00 00
/dev/nvme0n1: 8 bytes were erased at offset 0x1bf292a000 (zfs_member): 0c b1 ba 00 00 00 00 00
/dev/nvme0n1: 8 bytes were erased at offset 0x1bf2929000 (zfs_member): 0c b1 ba 00 00 00 00 00
/dev/nvme0n1: 8 bytes were erased at offset 0x1bf2928000 (zfs_member): 0c b1 ba 00 00 00 00 00
/dev/nvme0n1: 8 bytes were erased at offset 0x1bf2927000 (zfs_member): 0c b1 ba 00 00 00 00 00
/dev/nvme0n1: 8 bytes were erased at offset 0x1bf2926000 (zfs_member): 0c b1 ba 00 00 00 00 00
/dev/nvme0n1: 8 bytes were erased at offset 0x1bf2925000 (zfs_member): 0c b1 ba 00 00 00 00 00
/dev/nvme0n1: 8 bytes were erased at offset 0x1bf2924000 (zfs_member): 0c b1 ba 00 00 00 00 00
/dev/nvme0n1: 8 bytes were erased at offset 0x1bf2923000 (zfs_member): 0c b1 ba 00 00 00 00 00
/dev/nvme0n1: 8 bytes were erased at offset 0x1bf2922000 (zfs_member): 0c b1 ba 00 00 00 00 00
/dev/nvme0n1: 8 bytes were erased at offset 0x1bf2921000 (zfs_member): 0c b1 ba 00 00 00 00 00
/dev/nvme0n1: 8 bytes were erased at offset 0x1bf2920000 (zfs_member): 0c b1 ba 00 00 00 00 00
After this was completed, my label was gone.
nvme0n1
├─nvme0n1p1 vfat 0714-E22E 579.2M 3% /boot/efi
├─nvme0n1p2 ext4 boot 7846c247-a35f-4093-b4ef-e860a734b507 671.4M 24% /boot
└─nvme0n1p3 crypto_LUKS f780afb3-06ba-4a67-b502-e44ef0799a95
└─luks-f780afb3-06ba-4a67-b502-e44ef0799a95 LVM2_member dU20fV-Y679-pJ8A-tZaK-pMPc-eOZA-AlsjaJ
└─fedora-root ext4 root a2bd9c66-25a1-48ed-8bd9-e66d1691ffa1 67.4G 32% /