Bug 1683209

Summary: [DOCS] OCS 3.11 upgrade: elaborate step regarding how full bricks are
Product: [Red Hat Storage] Red Hat Gluster Storage Reporter: daniel <dmoessne>
Component: doc-Container_Native_Storage_with_OpenShiftAssignee: Disha Walvekar <dwalveka>
Status: CLOSED CURRENTRELEASE QA Contact: Aditya Ramteke <aramteke>
Severity: medium Docs Contact:
Priority: medium    
Version: ocs-3.11CC: aramteke, asriram, dwalveka, jmulligan, puebele, rhs-bugs, rtalur, storage-doc, storage-qa-internal
Target Milestone: ---   
Target Release: OCS 3.11.z Async   
Hardware: Unspecified   
OS: Unspecified   
Whiteboard:
Fixed In Version: Doc Type: If docs needed, set a value
Doc Text:
Story Points: ---
Clone Of: Environment:
Last Closed: 2021-01-05 06:50:59 UTC Type: Bug
Regression: --- Mount Type: ---
Documentation: --- CRM:
Verified Versions: Category: ---
oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
Cloudforms Team: --- Target Upstream Version:
Embargoed:
Bug Depends On:    
Bug Blocks: 1845059    

Description daniel 2019-02-26 13:10:28 UTC 
Document URL: 
-- app storage part 
https://access.redhat.com/documentation/en-us/red_hat_openshift_container_storage/3.11/html/deployment_guide/chap-documentation-red_hat_gluster_storage_container_native_with_openshift_platform-upgrade#chap-Documentation-Red_Hat_Gluster_Storage_Container_Native_with_OpenShift_Platform-Upgrade-Gluster_pods

-- registry-storage
https://access.redhat.com/documentation/en-us/red_hat_openshift_container_storage/3.11/html/deployment_guide/chap-upgrade-glusterfs-registry-namespace#chap-registry-Documentation-Red_Hat_Gluster_Storage_Container_Native_with_OpenShift_Platform-Upgrade-Gluster_pods

Section Number and Name: 
app-storage:
6.1.3. Upgrading the Red Hat Gluster Storage Pods
   11. Execute the following commmand and ensure that the bricks are not more than 90% full: 
                 # df -kh | grep -v ^Filesystem | awk '{if($5>"90%") print $0}'

registry-storage:
6.2.3. Upgrading the Red Hat Gluster Storage Registry Pods
   10.  Execute the following commmand and ensure that the bricks are not more than 90% full: 
                 # df -kh | grep -v ^Filesystem | awk '{if($5>"90%") print $0}'

Describe the issue: 
I think we should explain better why this step is needed, what could happen if ignored and most important what to do if one is beyond the limit

Suggestions for improvement: 
Elaborate the reason for this check as well and consequences if ignored _and_ what to do if bricks are fuller than the 90%

Additional information: