Bug 2014696

Summary: [DDF] Clearly document OSD replacement should occur when cluster is active+clean
Product: [Red Hat Storage] Red Hat OpenShift Container Storage Reporter: Direct Docs Feedback <ddf-bot>
Component: documentationAssignee: Agil Antony <agantony>
Status: CLOSED CURRENTRELEASE QA Contact: Oded <oviner>
Severity: high Docs Contact:
Priority: high    
Version: 4.5CC: agantony, asriram, assingh, bkunal, kramdoss, mamccoma, mhackett, ocs-bugs, olakra, oviner, rcyriac, sagrawal, sbaldwin, vumrao
Target Milestone: ---Keywords: NoDocsQEReview, ZStream
Target Release: OCS 4.7.8   
Hardware: All   
OS: All   
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Last Closed: 2022-03-02 07:11:51 UTC Type: ---
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oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
Cloudforms Team: --- Target Upstream Version:
Embargoed:

Description Direct Docs Feedback 2021-10-15 20:57:49 UTC 
Hello,
when we remove OSDs from the cluster, the cluster status and PG states should be a concern before doing anything. 

IE we should validate that all the PGs are active+clean before removing an OSD. Simply doing this and validating that the Ceph cluster is healthy enough to remove OSDs can prevent potential data loss situations.

Additionally, if we are to remove multiple OSD, it's important that the PGs in the Ceph cluster are active+clean each time before we  remove any subsequent OSD.

Reported by: rhn-support-mamccoma

https://access.redhat.com/documentation/en-us/red_hat_openshift_container_storage/4.5/html/managing_openshift_container_storage/replacing-a-storage-device_rhocs#annotations:0350a783-176c-45ca-9356-a3f3d1a53d6f
Comment 3 Yaniv Kaul 2021-11-18 15:42:28 UTC 
Can this be triaged? It hasn't seen any movement for a month, and it's on the watchlist.
TIA,
Y.
Comment 8 Oded 2021-12-13 00:17:13 UTC 
Hi @agantony ,
I added comments on Draft content.
https://docs.google.com/document/d/1deY2RytPulelMfKU92ZKURbtydPvJ0yNdJtl8cNaWOg/edit?usp=sharing