Re: Two way mirror in BRTFS

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2011/12/30 Jaromir Zdrazil <jaromir.zdrazil@xxxxxxxx>:
> Sorry fo the typo in the subject!
>
> Just to add, I would like to see a two way mirror solution, but if it will not work now/is not implemnted yet, I would propably choose between drbd in asynchronous mode or make a some kind if "incremental" snapshot to a remote mapped disk (I do not know yet, if brtfs support it)  - it means have one shapshop and let's say have a daily incremental update of this snapshot.

You mean like "zfs send -i"? If yes, why not just use zfs? There's
zfsonlinux project, with easy-to-install ppa for ubuntu. Or you could
compile it manually.

>
> How would you do it?

If you DO mean zfs-send-like-functionality, then you should ask about
"btrfs send and receive", not "two way mirror" (which is not an
accurate way to describe what you want). Also, send/receive ability
does not mean it can act as two-way mirror. It CAN be an alternative
to drbd async though.

I don't think there's any publicly available code for it yet though.

-- 
Fajar
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