Kohei Sugihara created HDDS-9979:
------------------------------------
Summary: Sum of used, available, and reserved exceeds the physical
volume size
Key: HDDS-9979
URL: https://issues.apache.org/jira/browse/HDDS-9979
Project: Apache Ozone
Issue Type: Bug
Components: DN
Affects Versions: 1.4.0
Reporter: Kohei Sugihara
Attachments: cluster1.png, cluster2.png
While reviewing DN metrics, I noticed the sum of Used, Available, and Reserved
is different from the actual volume size. I don't survey Jira deeply for
existing similar issues, so I'm appreciate tell me similar issues if you know.
We experienced this issue in two clusters. Cluster #1 gains much data and
experienced disk full many times.
h2. Example 1: Cluster #1
This cluster is consisted from 36 nodes. Each node has 24 of 14 TB HDD drives.
Expected total capacity per a single node is calculated by: 36 bays * 14 TB *
10^12 / 1024^4 = 458 TiB, so the sum of
{{volume_info_metrics_\{used,available,reserved}}} should be equal to 458 TiB.
However, we experience differ results.
The cluster1.png shows a stacked bar graph. Reported metrics are vary and
exceeds 458 TiB.
h2. Example 2: Cluster #2
This is another example and each node has 12 of 14 TB HDD drives. Expected
total capacity per a single node is calculated by: 12 bays * 14 TB * 10^12 /
1024^4 = 153 TiB.
The cluster2.png shows a stacked bar graph. Reported metrics is almost same
among DNs but some exceptions exceed the physical capacity.
--
This message was sent by Atlassian Jira
(v8.20.10#820010)
---------------------------------------------------------------------
To unsubscribe, e-mail: [email protected]
For additional commands, e-mail: [email protected]
