[ceph-users] Erasure Coding Pools and PG calculation - documentation

Christian Wuerdig christian.wuerdig at gmail.com
Sun Nov 12 15:14:38 PST 2017


I might be wrong, but from memory I think you can use
http://ceph.com/pgcalc/ and use k+m for the size

On Sun, Nov 12, 2017 at 5:41 AM, Ashley Merrick <ashley at amerrick.co.uk> wrote:
> Hello,
>
> Are you having any issues with getting the pool working or just around the
> PG num you should use?
>
> ,Ashley
>
> Get Outlook for Android
>
> ________________________________
> From: ceph-users <ceph-users-bounces at lists.ceph.com> on behalf of Tim Gipson
> <tgipson at ena.com>
> Sent: Saturday, November 11, 2017 5:38:02 AM
> To: ceph-users at lists.ceph.com
> Subject: [ceph-users] Erasure Coding Pools and PG calculation -
> documentation
>
> Hey all,
>
> I’m having some trouble setting up a Pool for Erasure Coding.  I haven’t
> found much documentation around the PG calculation for an Erasure Coding
> pool.  It seems from what I’ve tried so far that the math needed to set one
> up is different than the math you use to calculate PGs for a regular
> replicated pool.
>
> Does anyone have any experience setting up a pool this way and can you give
> me some help or direction, or point me toward some documentation that goes
> over the math behind this sort of pool setup?
>
> Any help would be greatly appreciated!
>
> Thanks,
>
>
> Tim Gipson
> Systems Engineer
>
>
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