On 06/02/15 21:07, Udo Lembke wrote:
Am 06.02.2015 09:06, schrieb Hector Martin:
On 02/02/15 03:38, Udo Lembke wrote:
With 3 hosts only you can't survive an full node failure, because for
that you need
host = k + m.
Sure you can. k=2, m=1 with the failure domain set to host will survive
a
Am 06.02.2015 09:06, schrieb Hector Martin:
On 02/02/15 03:38, Udo Lembke wrote:
With 3 hosts only you can't survive an full node failure, because for
that you need
host = k + m.
Sure you can. k=2, m=1 with the failure domain set to host will survive
a full host failure.
Hi,
Alexandre
Oh, I didn't thinked about this.
Thanks Hector !
- Mail original -
De: Hector Martin hec...@marcansoft.com
À: ceph-users ceph-users@lists.ceph.com
Envoyé: Vendredi 6 Février 2015 09:06:29
Objet: Re: [ceph-users] erasure code : number of chunks for a small cluster ?
On 02/02/15 03:38
...@dachary.org
À: aderumier aderum...@odiso.com, ceph-users ceph-users@lists.ceph.com
Envoyé: Dimanche 1 Février 2015 18:42:51
Objet: Re: [ceph-users] erasure code : number of chunks for a small cluster ?
Hi Alexandre,
On 01/02/2015 18:15, Alexandre DERUMIER wrote:
Hi,
I'm currently trying
can be down for maintenance.
Ok, thanks ! With loic explain too, It's clear now !
- Mail original -
De: Udo Lembke ulem...@polarzone.de
À: aderumier aderum...@odiso.com, ceph-users ceph-users@lists.ceph.com
Envoyé: Dimanche 1 Février 2015 19:38:55
Objet: Re: [ceph-users] erasure code
Hi Alexandre,
nice to meet you here ;-)
With 3 hosts only you can't survive an full node failure, because for
that you need
host = k + m.
And k:1 m:2 don't make any sense.
I start with 5 hosts and use k:3, m:2. In this case two hdds can fail or
one host can be down for maintenance.
Udo
PS:
Hi Alexandre,
On 01/02/2015 18:15, Alexandre DERUMIER wrote:
Hi,
I'm currently trying to understand how to setup correctly a pool with erasure
code
https://ceph.com/docs/v0.80/dev/osd_internals/erasure_coding/developer_notes/
My cluster is 3 nodes with 6 osd for each node (18 osd
