Sun Storage 7000 Unified Storage System: Configured dataset retention of 1 week, but Analytics is still showing older Analytics

Asset ID:	1-72-1573456.1
Update Date:	2016-09-30
Keywords:

Solution Type Problem Resolution Sure

Solution 1573456.1 : Sun Storage 7000 Unified Storage System: Configured dataset retention of 1 week, but Analytics is still showing older Analytics

Applies to:

Sun Storage 7310 Unified Storage System - Version All Versions to All Versions [Release All Releases]
Sun Storage 7210 Unified Storage System - Version All Versions to All Versions [Release All Releases]
Sun Storage 7110 Unified Storage System - Version All Versions to All Versions [Release All Releases]
Sun ZFS Storage 7420 - Version All Versions to All Versions [Release All Releases]
Sun ZFS Storage 7320 - Version All Versions to All Versions [Release All Releases]
7000 Appliance OS (Fishworks)

Symptoms

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Appliance was upgraded to 2011.4.2.

The dataset retention was set for 1 week.

Two months later, we see that much older analytics are still visible in the BUI when viewing a full month of data.

Cause

Confirmed per second/minute/hour retention set to 1 week and the CLI reports data going back for several weeks.

The analytics beyond the 7 days configured for retention, repeats the same number for hours without change so may be a result of longer range data averaged and reported as shorter intervals.

Review by engineering determined the maintenance of the long term data is normal. It does not occupy a large amount of space so is not an issue, doesn't result in large datasets or fragmented memory.

A check of the analytics dataset files maintained in the stash shows the only files older than 7 days are part of the reference dataset, no files over 7 days exist for analytics datasets.

A check of datasets being maintained in the stash showed only the expected 39 active datasets and the reference dataset.

Checking analytics via the CLI, once the time frame went beyond the 7 days configured for retention, the save value repeated many times suggesting a longer term average being reported for intermediate timestamps.

I suspected bug 15814494 and opened a bug to confirm. RPE reported the behavior is normal.

Solution

Normal behavior - no action necessary.

References

<BUG:16286443> - ANALYTICS DISPLAYS GRAPHS PREDATING CONFIG'D ANALYTICS RETENTION PERIOD.
<BUG:15814494> - SUNBT7196702 REFERENCE DATASET IS NEVER TRIMMED, HITS MEMORY CAP AS A RESULT

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