Description

Free space on an HSM file system runs out and the following error is written to the kernel ring

 

buffer (displayed by the dmesg command):

 

[CRITICAL] FSE-HSM not listening for FS events! Unmount FS and check FSE logs for more

 

details!

 

(Linux system specific)

Explanation

n/a

Workaround

To solve this critical situation, proceed as follows:

 

1.

Check free space on the HSM file system. Invoke the following command:

 

 

df -hHSMFileSystemMountPoint

 

1.

Stop the FSE implementation:

 

 

fse --stop

 

2.

Extend the size of the volume that stores the HSM file system. Use the lvextend command

 

 

for this purpose.

 

3.

Reconfigure the corresponding FSE partition with modified values for the

 

 

CriticalWatermark, HighWaterMark, and ReleaseInterval variables to prevent

 

 

the HSM file system from becoming full.

 

4.

Start the FSE implementation:

 

 

fse --start

 

5.

To identify potential inconsistencies, run the following command on the FSE partition

 

 

containing the HSM file system which became full:

fsecheck --fsc-hsmfs PartitionName

Description

If the I/O traffic on an HSM file system is very high, the Hierarchical Storage Manager (HSM)

 

process may stop reading file system events and completely block access to the HSM file

 

system.

 

(Linux system specific)

Explanation

n/a

Workaround

Terminate all user applications that are currently trying to access the HSM file system, including

 

NFS and Samba daemons.

HP StorageWorks File System Extender Software user guide 259

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Page 259
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HP File System Extender (FSE) manual Fse --stop, Fse --start, Fsecheck --fsc-hsmfs PartitionName
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File System Extender (FSE) specifications

HP File System Extender (FSE) is a sophisticated solution designed to optimize data storage management for enterprises that deal with large volumes of unstructured data. This technology addresses the challenges of data growth and the need for effective data retention strategies, enabling organizations to store and manage their information more efficiently.

One of the main features of HP FSE is its ability to intelligently migrate data between primary and secondary storage. By utilizing policies that determine when to move infrequently accessed files to lower-cost storage environments, FSE helps reduce the strain on primary storage systems and saves on costs associated with high-performance storage solutions. This tiered approach to data management ensures that organizations can access the data they need quickly while still maintaining an efficient overall storage architecture.

Another notable characteristic of HP FSE is its seamless integration with existing storage infrastructures. The solution works with a variety of storage systems, allowing organizations to utilize their current investments without the need for significant changes to their infrastructure. This interoperability is powered by advanced technologies that facilitate data migration and retrieval, ensuring a smooth transition for organizations looking to optimize their storage strategies.

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Security is paramount in data management, and HP FSE addresses this concern by implementing advanced data protection features. This includes data encryption, secure access controls, and compliance with industry regulations, ensuring that sensitive information is safeguarded throughout its lifecycle.

Overall, HP File System Extender is a comprehensive data storage solution that combines intelligent data management, seamless integration, insightful analytics, and robust security features. By leveraging these capabilities, organizations can efficiently manage their unstructured data, lower costs, and enhance operational efficiency, making it an invaluable tool in today’s data-driven landscape.
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