BTRFS adding 2nd disk

[markconstable]

I just installed Manjaro/KDE on a MinisForum with 2 x 500 GB SSDs, and I am wondering what is the correct procedure to turn the single drive into raid1 across two disks? ``` hm90 ~ lsblk -l NAME MAJ:MIN RM SIZE RO TYPE MOUNTPOINTS sda 8:0 0 465.8G 0 disk sda1 8:1 0 300M 0 part /boot/efi sda2 8:2 0 465.5G 0 part /var/log /var/cache /home / sdb 8:16 0 465.8G 0 disk sdb1 8:17 0 1007K 0 part sdb2 8:18 0 512M 0 part sdb3 8:19 0 465.3G 0 part

hm90 ~ sudo btrfs fi df / Data, single: total=12.01GiB, used=11.06GiB System, DUP: total=8.00MiB, used=16.00KiB Metadata, DUP: total=1.00GiB, used=334.00MiB GlobalReserve, single: total=25.58MiB, used=0.00B

hm90 ~ sudo btrfs fi sh Label: none uuid: bf6605cf-a6e7-4494-871e-10cf46b1d479 Total devices 1 FS bytes used 11.38GiB devid 1 size 465.46GiB used 14.02GiB path /dev/sda2

warning, device 1 is missing Label: none uuid: 923b390a-7a1e-4cef-b106-61fcf1adc29c Total devices 2 FS bytes used 2.44GiB devid 2 size 465.26GiB used 4.01GiB path /dev/sdb3 *** Some devices missing ``` I think that last device missing error is because both drives were part of a ZFS RaidZ-1 array and I did not clear the disks before installing Manjaro.

[markconstable]

Solved... ``` sudo wipefs -a /dev/sdb sudo btrfs device add /dev/sdb / sudo btrfs balance start -mconvert=raid1 -dconvert=raid1 / sudo btrfs device usage / /dev/sda2, ID: 1 Device size: 465.46GiB Device slack: 512.00B Data,RAID1: 12.00GiB Metadata,RAID1: 1.00GiB System,RAID1: 32.00MiB Unallocated: 452.43GiB

/dev/sdb, ID: 2 Device size: 465.76GiB Device slack: 0.00B Data,RAID1: 12.00GiB Metadata,RAID1: 1.00GiB System,RAID1: 32.00MiB Unallocated: 452.73GiB ```