Changing default root file system to btrfs

James Tunnicliffe james.tunnicliffe at linaro.org
Thu Aug 4 13:52:27 UTC 2011


On 4 August 2011 13:07, Daniel Lezcano <daniel.lezcano at linaro.org> wrote:
> IMHO it is not stable enough and I am not sure it is worth having such
> filesystem as it is mainly used for snapshotting. The last time I played
> with it, the FS was quickly corrupted but I don't have to complain
> because the kernel configuration help was explicit enough :)
>
> "Btrfs is highly experimental, and THE DISK FORMAT IS NOT YET FINALIZED.
>  You should say N here unless you are interested in
> testing Btrfs with non-critical data."

That description is, as far as I can tell, out of date.
https://help.ubuntu.com/community/btrfs#Stability

I haven't had any problems with my testing, which includes pulling the
power on the board I am using, but I haven't torture tested it.

Paul:
It has been file system option for Ubuntu since 10.10.

I have seen poor performance when DDing to a card, which I assume is
because dd is not writing large aligned chunks. If we can dd the first
meg or so of data onto the card, then write in 4MB chunks that are all
4MB aligned that should be quick (at least, if my reading of my
flashbench results is correct).

--
James Tunnicliffe



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