Hallo, cwillu,
Du meintest am 05.12.10:
>>> I am not an expert on this by a long shot, but it looks like you
>>> added these two disks in raid0.
>> I won't hope that this error is related to RAID0, I haven't
>> installed (as far as I know) RAID0.
>>
>> My installation way:
>>
>> (2-TByte-Disk)
>>
>> mkfs.btrfs /dev/sdf2
>> mount /dev/sdf2 /srv/MM
>>
>> (1.5-TByte-Disk)
>> btrfs device add /dev/sdc3 /srv/MM
>> btrfs filesystem balance /srv/MM
>>
>> (and then waiting about 1 day ...)
>> Especially: no RAID definition.
[...]
> If it's not a raid1, and there's multiple devices, it's a raid0 (and
> so available space is the sum of all drives). Your problem however
> is that metadata is raid1 by default (where everything is duplicated
> on separate drives).
Maybe you're right. But if you're right then I have got the worst of two
worlds. I don't want neither RAID0 nor RAID1, I want a bundle of
different disks (at least partititions) which seem to be one large disk.
And I've hoped btrfs does this job.
> Adding another device will probably work around this, as will simply
> running a balance operation (possibly, and you may need to free up
> some space first anyway).
That could lead to the following steps:
Buy a 3 GByte disk
btrfs device add /dev/sdxy /srv/MM
btrfs filesystem balance /srv/MM
1.5 TByte disk:
btrfs device delete /dev/sdc3 /srv/MM
btrfs filesystem balance /srv/MM
and then disconnect the 1.5 TByte disk (and hope that now the 2 TByte
disk sets the limits).
No nice way ...
--------------------------
Is there a way to avoid this (presumably) RAID mismatch?
By the way: working with TByte disks includes (for home users) that
there's no backup ...
Viele Gruesse!
Helmut
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