Efficient recall invocation

•Due to an underlying omniORB/CORBA limitation, the upper limit on the number of entries in the file list (set of files to be recalled) is 26000.

The fsefile command provides options that are used to efficiently recall sets of files from FSE media. fsefile reads list of files to be recalled either from the file specified on the command line or from standard input. Each entry should be specified on its own line, and can include path relative to the mount point directory of the HSM file system.

You need to use the following command line to trigger an efficient recall of set of files:

fsefile --recall --if [InputFile] [--utf8]

Notes

•If you omit the option InputFile, fsefile reads the list of files for recall from standard input.

•If you specify the option --utf8, fsefile treats the file list to be in the UTF-8 format instead of plain ASCII (more specifically, the codeset of the terminal where it is run).

You can also pipe the output of another command to fsefile. Note that in this case, the file list can only be in plain ASCII format:

Command fsefile --recall --if

TIP: For a smaller set of files efficient recall can also be triggered using the command

fsefile --recallFileName..., where FileName... is a list of filenames, separated by spaces.

For more information on the fsefile command, see the FSE CLI reference.

Logging file recalls

Successfully recalled files are logged into the HSM file system log file, hsmfs_PartitionName.log.

Example excerpt from the HSM file system log file

[2005/08/29 13:41:37, 0xc98bf7a90000000c, 2, 0, "512MBa"] Recalled. ( 20050829000002, 0, 536870912 ).

[2005/08/29 15:36:46, 0xc98bf7aa0000000d, 3, 0, "512MBb"] Recalled. ( 20050829000006, 0, 505282127 ), ( 20050829000006, 505282127, 31588785 ).

[2005/08/30 09:52:04, 0xc98bf7aa0000000d, 3, 0, "512MBb"] Recalled. ( 20050830000005, 0, 413007439 ), ( 20050830000005, 413007439, 123863473 ).

[2005/08/30 12:57:09, 0xc98bf7aa0000000d, 3, 0, "512MBb"] Recalled. ( 20050830000051, 0, 406421071 ), ( 20050830000051, 406421071, 6586368 ), ( 20050830000051, 413007439, 123863473 ).

[2005/09/02 13:18:03, 0xc98bf7ab0000000e, 4, 0, "512MBc"] Recalled. ( 20050902000005, 0, 536870912 ).

[2005/09/02 13:18:38, 0xc98bf7ac0000000f, 5, 0, "512MBd"] Recalled. ( 20050902000005, 0, 473693775 ), ( 20050902000005, 473693775, 63177137 ).

From this excerpt, the following information can be acquired:

•The recall process for a local HSM file system has successfully recalled four files: 512MBa, 512MBb,

512MBc, and 512MBd.

•The file 512MBc was migrated in three chunks, therefore three recall jobs needed to be created for recalling it. Their job IDs were 20050830000005, 20050829000006, and 20050830000051.

Files that failed to be recalled are logged into the FSE error log file, error.log, with a single failure indicator in the FSE event log file, fse.log.

HP StorageWorks File System Extender Software user guide 163

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.

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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.

HP File System Extender (FSE) manual Efficient recall invocation, Logging file recalls

Models: File System Extender (FSE)