HP File System Extender (FSE) manual Known issues and workarounds

Page 25

5 Known issues and workarounds

Description

After starting FSE daemons with the command fse --start, the following error appears in the

 

FSE error log:

 

ERROR: *** NO OWNER set for INO... *** File must be migrated again! fileID= <FileID>

 

file <DirectoryPath>/<FileName>

Explanation

While FSE daemons on a particular FSE client are stopped and modifications are made on an

 

HSM file system located on the client, it may happen that a file system event is lost. The file

 

owner information for the file DirectoryPath/Filename in the HSMDB is not complete.

 

This error can be detected earlier using fsecheck --fsc-hsmfs, and is logged when the

 

migration of the file is started.

Workaround

Manually put the file and the directory where the file is located on the migration candidate list

 

using the command fsefile --migrateDirectoryPath Filename.

Description

In an FSE implementation with highly loaded FSE server, after numerous FSE operations

 

(migrations, releases, recalls) are running for a long period time, either of the following

 

symptoms are noticed: recalls and possibly other FSE operations start failing, FSE partitions are

 

reported to be in the unmounted state but the corresponding HSM processes are running.

 

Inspection of the FSE error log may reveal the following errors:

 

omniORB: Unrecoverable error for this endpoint: giop:tcp:10.65.1.38:3504, it will no longer

 

be serviced.

 

omniORB: Error: Unable to create an endpoint of this description: giop:tcp:10.65.1.38:3513

 

PM->Recall() failed: 6004: Caught Corba exception.

 

'CORBA::TRANSIENT#TRANSIENT_ConnectFailed'

Explanation

For explanation of this problem, see chapter ”Recommendations”, section ”General

 

recommendations”, subsection ”Preventing exhaustion of CORBA sockets” on page 16.

Workaround

For workaround for this problem, see chapter ”Recommendations”, section ”General

 

recommendations”, subsection ”Preventing exhaustion of CORBA sockets” on page 16.

Description

Running the fsefile -l * command on the top directory of an HSM file system results in the

 

following message:

 

Warning: System Volume Information: cannot get file state (5: Access is denied. 'CreateFile').

 

(Windows system specific)

Explanation

The message appears because the directory System Volume Information is a special

 

Windows directory which refuses access from other applications.

Workaround

The command completes successfully and you may ignore the message.

hp StorageWorks File System Extender Release Notes 25

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Contents HP StorageWorks File System Extender File System Extender 3.2 Release Notes Contents Known issues and workarounds Intended audience About this guideRelated documentation Prerequisites Document conventions and symbolsSoftware requirements Hardware requirementsHP-authorized reseller HP technical supportHelpful web sites Page Hardware requirements Supported hardware and softwareSupported storage arrays, tape drives, and libraries Linux platform Supported operating systems and platformsWindows platform Software requirementsSupported third-party software Enhanced robustness New featuresSupport for LTO Ultrium 3 media Miscellaneous enhancementsNew features Recommendations Shortening the termination delay for FSE commandsGeneral recommendations Keeping the FSC and Hsmdb journals smallScanGranularity = Preventing exhaustion of Corba socketsMigrating to a newer tape drive technology Linux-specific recommendationsImproving performance of the FSE-Samba integration Windows-specific recommendationsCommon limitations LimitationsLinux-specific limitations Reusing file systems for newly configured FSE partitionsSpecial file types are not supported Directories with sticky bit not supported Limited symbolic link supportFile size limitation Append-only and immutable files cannot be releasedFile transfer blockage between Samba client and server Recycle Bin must be disabled on FSE implementation Unsupported Windows services and file system featuresWindows-specific limitations Unsupported third-party softwareLimitations on the Traditional Chinese Windows systems Limited support for Windows disk checkerUsing the command fsefile --migrateDirectoryPath Filename Known issues and workaroundsKnown issues and workarounds
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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.

Additionally, HP FSE is equipped with robust reporting and analytics capabilities. This functionality provides organizations with insights into their storage usage, helping them understand data patterns and optimize their storage environments accordingly. By having visibility into which files are accessed most frequently and which are rarely used, organizations can make informed decisions on data retention policies and storage management.

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.