Hallo, Hugo,
Du meintest am 04.08.11:
>>> What are the symptoms of not having the device node? (i.e. how
>>> would I diagnose this particular problem?)
>> If I remember correct: mounting works, writing works, reading works.
>> And adding another partition works.
>>
>> But there are strange messages when I try to resize or delete.
>>
>> I'll try to reproduce these messages ...
> Thanks. We can add those as symptoms to the solution later.
Maybe I've found the place of the (unique?) problem.
Partitions:
sdb1 2 GByte
sdb2 3 GByte
sdb3 4 Gbyte
mkfs.btrfs -L Probe -m raid0 -d raid1 /dev/sdb1
mount LABEL=Probe /mnt/Probe
filling with about 600 MByte (1 *.iso)
btrfs device add /dev/sdb2 /mnt/Probe
btrfs filesystem balance /mnt/Probe
(ok)
btrfs device add /dev/sdb3 /mnt/Probe
filling with a DVD *.iso (more than 4 GByte)
btrfs filesystem balance /mnt/Probe
(ok)
And then:
btrfs device delete /dev/sdb2 /mnt/Probe
works fine, if /dev/btrfs-control exists
crashes (shown with "dmesg") if this device doesn't exist.
Viele Gruesse!
Helmut
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