[DOC-13372]: Simplify release note for Magma storage bug (MB-67762)

Signed-off-by: Ray Offiah <[email protected]>

Author: RayOffiah

modules/release-notes/partials/MB-67762.adoc

@@ -2,5 +2,65 @@
 a| https://jira.issues.couchbase.com/browse/MB-67762[MB-67762]
 
 a| There is an integer overflow bug in buckets using the Magma storage engine. 
+This bug can potentially cause a subset of mutations
+to become invisible to read operations after approximately 500 billion to 2 trillion mutations per bucket.   
+
+Compaction needs to be run for the couchbase buckets which are exposed to the bug as reported by the diagnostic script. 
+
+[discrete]
+===== {counter: seq}. Upgrade Couchbase Server
+Upgrade the Couchbase Server on all nodes. You can perform the upgrade using one of two methods ONLY:
+
+* A graceful failover of each node
+* An offline upgrade of the Couchbase Server
+
+[discrete]
+===== {counter: seq}. Backup Data
+Backup Magma data files for nodes with any vulnerable vBucket after gracefully failing over the node or taking the node offline.  
+To back up Magma data files, copy the /data/bucket directory to a backup location. Note that the copy should be performed after stopping couchbase server to maintain the consistency of the data files:
+
+For clusters identified as being vulnerable, use the following steps to resolve the issues.
+
+[discrete]
+===== {counter: seq}. Stop Creating New index
+
+Stop building any index while applying the resolution steps.
+
+[discrete]
+===== {counter: seq}. Run Bucket Compaction
+
+Compaction needs to be run for the couchbase buckets which are exposed to the bug as reported by the diagnostic script. 
+
+[discrete]
+===== {counter: seq}. Upgrade Couchbase Server
+
+Upgrade the Couchbase Server on all nodes. You can perform the upgrade using one of two methods ONLY:
+
+* A graceful failover of each node
+* An offline upgrade of the Couchbase Server
+
+[discrete]
+===== {counter: seq}. Backup Data
+
+Backup Magma data files for nodes with any vulnerable vBucket after gracefully failing over the node or taking the node offline.  To back up Magma data files, copy the /data/bucket directory to a backup location. Note that the copy should be performed after stopping couchbase server to maintain the consistency of the data files:
+
+[source,shellscript]
+----
+# service couchbase-server stop
+
+# cp -rp /data/bucketname /backup_data/
+----
+
+[discrete]
+===== {counter: seq}. Perform Delta Recovery and Restart Couchbase Server
+
+Once this step is complete, any documents previously hidden in the vulnerable window will immediately become accessible.
+
+[discrete]
+===== {counter: seq}. Reclaim Wasted Disk Space
+
+This step addresses potential storage bloat caused by old document versions not being garbage-collected.  To reclaim this disk space, you can perform swap rebalance on the _nodes that the diagnostic script identified_ as being impacted.
+== Perform Delta Recovery and Restart Couchbase Server
+
+Once this step is complete, any documents previously hidden in the vulnerable window will immediately become accessible.
 
-a| For details, please refer to https://jira.issues.couchbase.com/browse/MB-67762[MB-67762]