Hallo, Felix,
Du meintest am 08.05.12:
>> As I've written many times: I want a system for my video collection
>> which allows
>>
>> adding a bigger disk
>> deleting/removing a smaller disk
>>
>> with simple commands.
>>
>> btrfs seems to be able to do that (and I have tested this job many
>> times). But with my configuration "mkfs.btrfs -m raid1 -d raid0"
>> I've (again) seen that all data vanishes when 1 disk fails.
>>
>> I'll try Hugo's proposal "mkfs.btrfs -m raid1 -d single".
>> And I hope that it doesn't make all disks unreadable when 1 disk
>> fails.
[...]
> @"-d single"
> Is it really possible to remove a disk from btrfs (created with -d
> single) without losing the data on that disk?
When the system is configured with
mkfs.btrfs -m raid1 -d raid0
then the above shown way is possible, it works (now) as expected.
Ok - it needs some time.
And I have yet told in this mailing list that I'll try the option 2-d
single".
> Is there a way to tell
> balance to copy all the data from this disk to the other disks (ofc
> if there is enough free space on them)?
As I've written some hours ago: I run
btrfs fi balance ...
after adding and after deleting a disk. Maybe it's not necessary.
Especially it seems not to be necessary after adding a disk.
Viele Gruesse!
Helmut
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