Re: active+undersized+degraded

[Dan Nica <dan.nica@xxxxxxxxxxxxxxxxxxxx>]

Great, also increased the pg(p) to 128 for that pool, “HEALTH_OK” now J

 

Thank you

Dan

From: ceph-users [mailto:ceph-users-bounces@xxxxxxxxxxxxxx] On Behalf Of Burkhard Linke
Sent: Thursday, December 17, 2015 2:53 PM
To: ceph-users@xxxxxxxxxxxxxx
Subject: Re: active+undersized+degraded

 

Hi,

On 12/17/2015 01:41 PM, Dan Nica wrote:

And the osd tree:

 

$ ceph osd tree

ID WEIGHT   TYPE NAME     UP/DOWN REWEIGHT PRIMARY-AFFINITY

-1 21.81180 root default

-2 21.81180     host rimu

0  7.27060         osd.0      up  1.00000          1.00000

1  7.27060         osd.1      up  1.00000          1.00000

2  7.27060         osd.2      up  1.00000          1.00000

the default CRUSH rulesets distribute PG replicates across hosts. With a single host the rules are not able to find a second OSD for the replicates.

Solutions:
- add a second host     - or -
- change CRUSH ruleset to distribute based on OSDs instead of hosts.

Regards,
Burkhard

-- 

Dr. rer. nat. Burkhard Linke

Bioinformatics and Systems Biology

Justus-Liebig-University Giessen

35392 Giessen, Germany

Phone: (+49) (0)641 9935810

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