Re: ceph-osd and btrfs results in high disk usage

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Observed same behaviour with higher disk resource consumption than xfs
before, but I`m wonder how it`s possible to get 5K IOPS on regular
(even cache-backed) device.

On Sat, Nov 9, 2013 at 7:55 PM, Stefan Priebe <s.priebe@xxxxxxxxxxxx> wrote:
> Hi,
>
> i've deployed two OSDs with btrfs but i'm seeing really crazy disk / fs
> usage.
>
> The xfs ones have constant 10-20MB/s the brfs one has constant 100MB/s with
> 5000 iop/s. And it's not btrfs it's the ceph-osd doing this amount of io at
> least iotop shows the ceph-osd writing this massive amount of data.
>
> Is this correct? Has anybody seen this before?
>
> Greets,
> Stefan
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