Re: node and its OSDs down...

[David Turner <david.turner@xxxxxxxxxxxxxxxx>]

I assume you also did ceph osd crush remove osd.<id>.  When you removed the osd that was down/out and balanced off of, you changed the weight of the host that it was on which triggers additional backfilling to balance the crush map.

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David Turner | Cloud Operations Engineer | StorageCraft Technology Corporation 380 Data Drive Suite 300 | Draper | Utah | 84020 Office: 801.871.2760 | Mobile: 385.224.2943

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From: ceph-users [ceph-users-bounces@xxxxxxxxxxxxxx] on behalf of M Ranga Swami Reddy [swamireddy@xxxxxxxxx]
Sent: Thursday, December 01, 2016 3:03 AM
To: ceph-users
Subject: [ceph-users] node and its OSDs down...

Hello,

One of my ceph node with 20 OSDs down...After a couple of hours, ceph health is in OK state.

Now, I tried to remove those OSDs, which were down state from ceph cluster...

using the "ceh osd remove osd.<id>"

then ceph clsuter started rebalancing...which is strange ..because thsoe OSDs are down for a long time and health also OK..

my question - why recovery or reblance started when I remove the OSD (which was down).

Thanks

Swami

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