Hi, On 2/26/20 3:36 PM, Leszek Dubiel wrote: > > Added /dev/sdb3, /dev/sdd3 and /dev/sdf3 to btrfs filesystem: > > > Label: none uuid: 44803366-3981-4ebb-853b-6c991380c8a6 > Total devices 6 FS bytes used 8.20TiB > devid 2 size 5.45TiB used 4.36TiB path /dev/sda2 > devid 3 size 5.45TiB used 4.36TiB path /dev/sdc2 > devid 4 size 10.90TiB used 8.71TiB path /dev/sde3 > devid 5 size 9.06TiB used 0.00B path /dev/sdb3 <<< > devid 6 size 5.43TiB used 0.00B path /dev/sdd3 <<<< > devid 7 size 3.61TiB used 0.00B path /dev/sdf3 <<<< > > > > Filessytem df looks good 20T of filesystem: > > root@wawel:~# df -h / > Filesystem Size Used Avail Use% Mounted on > /dev/sda2 20T 8.3T 9.2T 48% / > > > > But disks seem to be NOT used by btrfs: > > root@wawel:~# btrfs dev usag / > /dev/sda2, ID: 2 > Device size: 5.45TiB > Device slack: 0.00B > Data,RAID1: 4.28TiB > Metadata,RAID1: 89.00GiB > Unallocated: 1.09TiB > > /dev/sdb3, ID: 5 > Device size: 9.06TiB <<<< no data usage? > Device slack: 3.50KiB > Unallocated: 9.06TiB > > /dev/sdc2, ID: 3 > Device size: 5.45TiB > Device slack: 0.00B > Data,RAID1: 4.28TiB > Metadata,RAID1: 83.00GiB > System,RAID1: 32.00MiB > Unallocated: 1.09TiB > > /dev/sdd3, ID: 6 > Device size: 5.43TiB <<<<<<<<???? > Device slack: 3.50KiB > Unallocated: 5.43TiB > > /dev/sde3, ID: 4 > Device size: 10.90TiB > Device slack: 3.50KiB > Data,RAID1: 8.55TiB > Metadata,RAID1: 162.00GiB > System,RAID1: 32.00MiB > Unallocated: 2.19TiB > > /dev/sdf3, ID: 7 > Device size: 3.61TiB <???? > Device slack: 3.50KiB > Unallocated: 3.61TiB > > > > Newly added disks seemed not to be used... So I've done: What did you in order do to make them being used? Write a huge amount of new data to the filesystem? > btrfs balance start -dconvert=raid1,soft -mconvert=raid1,soft / > > > It didn't help. If you read the documentation, you'll learn what soft means, and why it did not do anything. > So I used: > > root@wawel:~# btrfs balance start -dusage=0 -musage=0 / > Done, had to relocate 0 out of 9050 chunks This will remove block groups which are entirely empty (afaik). How would that start using a new drive? > then: > > root@wawel:~# btrfs balance start -dusage=1 -musage=1 / > Done, had to relocate 106 out of 9050 chunks You're pointing balance at block groups that are 1% full. > And I still don't see any usage of the devices... The contents were probably moved into free space inside already existing block groups. > Shall I activate these newly added block devices somehow? > Those 106 reallocated chunks should have been put to new devices, right? Don't panic. Hans
