* AGs in btrfs
@ 2008-08-03 0:20 Jan Engelhardt
2008-08-04 12:45 ` Chris Mason
0 siblings, 1 reply; 2+ messages in thread
From: Jan Engelhardt @ 2008-08-03 0:20 UTC (permalink / raw)
To: linux-btrfs
Hi,
I was wondering whether btrfs has a concept similar to xfs's "allocation
groups", which, as far as I understand, means that the filesystem has
multiple B-tree roots to allow for more finegrained locking and desaster
containment (losing only 1/16th of the fs in a medium-worst case).
^ permalink raw reply [flat|nested] 2+ messages in thread
* Re: AGs in btrfs
2008-08-03 0:20 AGs in btrfs Jan Engelhardt
@ 2008-08-04 12:45 ` Chris Mason
0 siblings, 0 replies; 2+ messages in thread
From: Chris Mason @ 2008-08-04 12:45 UTC (permalink / raw)
To: Jan Engelhardt; +Cc: linux-btrfs
On Sat, 2008-08-02 at 20:20 -0400, Jan Engelhardt wrote:
> Hi,
>
>
> I was wondering whether btrfs has a concept similar to xfs's "allocation
> groups", which, as far as I understand, means that the filesystem has
> multiple B-tree roots to allow for more finegrained locking and desaster
> containment (losing only 1/16th of the fs in a medium-worst case).
Yes and no, we'll eventually have multiple extent allocation trees that
provide some of what the AGs do. Pulling out hte btree roots for more
fault tolerance is something we need to study.
-chris
^ permalink raw reply [flat|nested] 2+ messages in thread
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