Sun Storage 7000 Unified Storage System: Unusual amount of used space in the pool of a replication source system

Asset ID:	1-75-1398036.1
Update Date:	2012-02-22
Keywords:

Solution Type Troubleshooting Sure

Solution 1398036.1 : Sun Storage 7000 Unified Storage System: Unusual amount of used space in the pool of a replication source system

Applies to:

Sun ZFS Storage 7320 - Version: Not Applicable and later   [Release: N/A and later ]
Sun Storage 7410 Unified Storage System - Version: Not Applicable and later    [Release: N/A and later]
Sun ZFS Storage 7420 - Version: Not Applicable and later    [Release: N/A and later]
Sun ZFS Storage 7120 - Version: Not Applicable and later    [Release: N/A and later]
Sun Storage 7210 Unified Storage System - Version: Not Applicable and later    [Release: N/A and later]
Information in this document applies to any platform.
NAS head revision : [not dependent]
BIOS revision : [not dependent]
ILOM revision : [not dependent]
JBODs Model : [not dependent]
CLUSTER related : [not dependent]

Purpose

There is an unusual amount of used space in the pool of a replication source system and you want to determine if there are old defunct replication snapshots on the system.

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Last Review Date

January 20, 2012

Instructions for the Reader

A Troubleshooting Guide is provided to assist in debugging a specific issue. When possible, diagnostic tools are included in the document to assist in troubleshooting.

Troubleshooting Details

Examine the amount of space being used by each project.

In the BUI in shares select "Projects". This will display the amount of data.

If any one project or share seems to be taking up more space than it should, select that project or share. Note that replication can take place on a project level or a share level.
Select Snapshots.
Examine each of the snapshots that begin with ".rr"

NAME                                                CREATION               UNIQUE    TOTAL
.rr-77b32939-c6ed-6b98-89d3-e1951d98cab9-2          2011-5-15 08:42:12     0         2.54M

If the unique size is quite large, that means that the data in the snapshot from the last replication action is different from the current data. Check the Creation date of the snapshot, if it is very old, you may have to destroy it.

References

<NOTE:1397959.1> - Sun Storage 7000 Unified Storage System: Resolution Path for Replication Issues

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