btrfs device delete missing problem

Using the latest mason git (and kernel 3.3.4)

stan {~} root# btrfs filesystem show
Label: none uuid: d71404d4-468e-47d5-8f06-3b65fa7776aa
Total devices 2 FS bytes used 7.09GB
devid 2 size 9.31GB used 9.09GB path /dev/sdd6
devid 1 size 9.31GB used 9.09GB path /dev/sdg6

Label: none uuid: b142f575-df1c-4a57-8846-a43b979e2e09

        Total devices 9 FS bytes used 1.35TB
        devid    8 size 1.36TB used 1.07TB path /dev/sda
        devid    7 size 1.36TB used 1.07TB path /dev/sde
        devid    2 size 465.76GB used 134.00GB path /dev/sdb
        devid    4 size 149.05GB used 0.00 path /dev/sdc
        devid    9 size 465.76GB used 161.00GB path /dev/sdf
        devid    3 size 149.05GB used 0.00 path /dev/sdh
        devid    5 size 920.34GB used 616.03GB path /dev/sdd7
        devid    6 size 920.34GB used 616.03GB path /dev/sdg7
        *** Some devices missing

stan {~} root# btrfs device delete missing /storage

May  5 05:28:40 stan kernel: btrfs: relocating block group 0 flags 2

stan {~} root#

stan {~} root# btrfs filesystem show
Label: none uuid: d71404d4-468e-47d5-8f06-3b65fa7776aa
Total devices 2 FS bytes used 7.09GB
devid 1 size 9.31GB used 9.09GB path /dev/sdg6
devid 2 size 9.31GB used 9.09GB path /dev/sdd6

Label: none uuid: b142f575-df1c-4a57-8846-a43b979e2e09

        Total devices 9 FS bytes used 1.35TB
        devid    3 size 149.05GB used 0.00 path /dev/sdh
        devid    6 size 920.34GB used 616.03GB path /dev/sdg7
        devid    9 size 465.76GB used 161.00GB path /dev/sdf
        devid    7 size 1.36TB used 1.07TB path /dev/sde
        devid    5 size 920.34GB used 616.03GB path /dev/sdd7
        devid    4 size 149.05GB used 0.00 path /dev/sdc
        devid    2 size 465.76GB used 134.00GB path /dev/sdb
        devid    8 size 1.36TB used 1.07TB path /dev/sda
        *** Some devices missing

sync here, or btrfs fi sync /storage, or wait at least 30 seconds
for everything to be written out to disk.

btrfs fi show doesn't go through the kernel to get its information
-- it simply reads the data on the disks directly. This means that if the kernel hasn't flushed changes to disk, btrfs fi show will be out of date, as you've got here.

Hugo.

=== Hugo Mills: hugo@... carfax.org.uk | darksatanic.net | lug.org.uk ===
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