On 5/8/12 6:53 PM, Helmut Hullen wrote:
> Hallo, Felix,
>
> Du meintest am 08.05.12:
>
>>> Why should I use RAID0 with a bundle of ext2/3/4? Mounting on/in the
>>> directory tree does the job.
>
>> Nobody told you that you should do it. What EVERYBODY here is telling
>> you: The problem you have right now would be the same damn problem,
>> no matter what fs you would you. Every fs will be unusable if you
>> lose one disk in a raid0 setup. That's all what we are trying to tell
>> you for the last 15 mails :)
>
>> If you don't see any benefits using btrfs then simply don't use it
>
> I still hope for a benefit when I use btrfs.
>
> 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.
Maybe you should inform yourself about the different raid level before
you use them?
http://en.wikipedia.org/wiki/Standard_RAID_levels#RAID_0
Raid0 will allways be that way: One disk dies, filesystem is gone.
That's some sort of defintion of raid0 :)
@"-d single"
Is it really possible to remove a disk from btrfs (created with -d
single) without losing the data on that disk? 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)?
>
> Viele Gruesse!
> Helmut
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