PowerScale OneFS: Software Journal Mirroring may Cause Data Unavailability

Clusters running on OneFS 9.13.0.1 may experience Data Unavailability (DU).

OneFS 9.13.0.1 contains a code issue that may cause Data Unavailability (DU) under certain conditions. This issue occurs on clusters that are using Software Journal Mirroring (SJM).

This issue can occur if all the following conditions are met:

• The cluster is using Software Journal Mirroring (SJM).
• The cluster contains either F710 or F910 nodes.
• The nodes contain 61 TB or 122 TB disk drives.

To confirm if Software Journal Mirroring is enabled on a cluster, run the following command.

# isi storagepool nodepools list -v | grep SJM

Example:

ISILON1-1# isi storagepool nodepools list -v | grep SJM
         SJM Enabled: Yes

Dell is releasing a software update to correct this issue for OneFS 9.13.

Customers who plan on upgrading to OneFS 9.13.0.1 should delay the upgrade until the update is available.

For any questions, contact Dell Technical Support

Software Journal Mirroring has been available since OneFS 9.11 and adds critical file system support to meet the reliability requirements for platforms with high capacity drives. Click for More information about Software Journal Mirroring.