Chapter 11. Reference

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Reference

This chapter describes the commands that are used to operate IBM Spectrum Archive (Linear Tape File System (LTFS)), data, and metadata formats for IBM Spectrum Scale (General Parallel File System (GPFS)) to LTFS migrations, system calls, tools, and limitations.

This chapter includes the following topics:

•Command-line reference

•Formats for IBM Spectrum Scale to IBM Spectrum Archive EE migration

•System calls and IBM tools

•IBM Spectrum Archive EE interoperability with IBM Spectrum Archive products

11.1 Command-line reference

This section describes the LTFS Enterprise Edition (IBM Spectrum Archive EE) commands, IBM Spectrum Scale commands, and Tivoli Storage Manager space management commands.

11.1.1 IBM Spectrum Archive EE commands

This section describes the syntax, parameters, and function of the IBM Spectrum Archive EE commands.

You must have root user authority to run the IBM Spectrum Archive EE commands, except for the ltfsee info command. Some options have a short format with a “-” followed by a letter and a long format that is “--” followed by the option name, such as -P and --path, which is shown in the ltfsee import command in Example 11-1.

Example 11-1 Short and long format for command options

ltfsee import -p pool1 -t D00279L5 1FA682L5 -P /importUser

ltfsee import -p pool1 -t D00279L5 1FA682L5 --path /importUser

IBM Spectrum Archive EE cleanup command

Run the ltfsee cleanup command to clean up scan results that are not removed after a scan or session finishes. For example, you can run this command to clean up any scan numbers that might remain if a user runs a ltfsee migrate, ltfsee premigrate, or ltfsee save command, and then closes the command window before the command completes, as shown in the following example:

ltfsee cleanup -s <scan number> [-l library_name]

Option -l must be provided on multi-library systems and can be omitted on single-library systems. This command cleans up scan numbers that remain after a scan or session finishes, but cannot be removed by its calling process. The only scans that can be cleaned up are scans that show 0 items within the “#items Queued” column of the IBM Spectrum Archive EE information scans command output, as shown in the following example:

ltfsee cleanup -s 3603955717

ltfsee drive command

Run the ltfsee drive command to add a tape drive to or remove a tape drive from the IBM Spectrum Archive EE system, as shown in the following example:

ltfsee drive <add | remove> -d <drive_serial[:attr]> [-n <node_id>] [-l <library_name>]

Important: A drive that is already added to a node cannot be added to another node. To change the node on which that drive is, first remove the drive by running the ltfsee drive remove command and then add the drive to the wanted node by running the ltfsee drive add command.

This command adds a specified tape drive to the IBM Spectrum Archive EE system. When you add a tape drive, you must specify values for the following variables:

•drive_serial[:attr]

The drive serial number of the drive that you want to add. The drive_serial value has a maximum length of 32 characters.

attr is a decimal numeric parameter and optional for this command and can be specified after “:”. This optional parameter is only valid for IBM Spectrum Archive (LTFS) EE versions V1R1.1.3 or later. A logical OR applies to set the three attributes: Migrate (4), Recall (2), and Generic (1). For example, a number of 6 for attr allows migration and recall jobs while generic jobs are disallowed. All of the attributes are set by default. If the tape drive to update has attributes set by IBM Spectrum Archive (LTFS) EE, you must remove them before adding new ones by using the ltfsee drive remove command. For more information about the usage of the drive role, see 7.22, “Drive Role settings for job assignment control” on page 217.

•node_id

The node ID of the cluster to which you want to add the tape drive.

The drive remove -d <drive_serial> command removes a specified tape drive from the IBM Spectrum Archive EE system. When you remove a tape cartridge, you must specify a value for the drive_serial variable. If a tape cartridge is in the specified tape drive and a job is in progress, the tape cartridge is unloaded automatically when the job completes. The drive_serial is the drive serial number of the drive that you want to remove, as shown in the following examples:

•ltfsee drive add -d 1068002111 -n 1

•ltfsee drive remove -d 1068002111

ltfsee export command

Run the ltfsee export command to remove one or more tape cartridges from the IBM Spectrum Archive EE system by removing files on them from the IBM Spectrum Scale namespace, as shown in the following example:

ltfsee export -p <pool_name> [ -l <library_name> ] [ -t <tape_id_1 tape_id_2 ... tape_id_N> ] [-o <message>]

The tape cartridge is reserved so that it is no longer a target for file migrations. It is then reconciled to remove any inconsistencies between it and IBM Spectrum Scale. The process then removes all files from the Spectrum Scale file system that exist on the exported tape cartridge and remove the tape from the cartridge pool. The files on tape cartridges are unchanged by the export and are accessible by other LTFS systems.

If the --offline option is specified, the inodes that refer to the files on the tapes will not be removed, but just set to an offline status. This feature means that the files remain visible in the GPFS namespace, but are no longer accessible. Tapes that have been exported with the --offline option can be imported by using the --offline option of the import command. The export command includes the following components:

•-t, --tape <tape_ids>

List of tapes to export.

•-p, --pool <poolName>

Storage pool defining the list of tapes to export.

•-l, --library <library_name>

The library name, which can be omitted on single library systems.

•-o, --offline <message>

Indicates that the tapes are exported into offline mode, meaning that the files remain visible in the GPFS namespace. The message, which must not exceed 500 characters, is stored in a GPFS extended attribute.

The following are some examples:

– ltfsee export -p pool1 -t D00279L5 1FA682L5

– ltfsee export -p pool1 -l lib1

– ltfsee export -p pool1 -o “Moved to storage room B”

In the case where an error occurs during the normal export command, the state of the tape becomes “Exported”. However, a cleanup is still necessary as some of the files on the file system can still reference the tape that was exported. See 10.5, “Handling export errors” on page 301 on how to clean up the IBMTPS file pointers.

ltfsee fsopt

To query or update the file system level settings for stub size, read starts recalls, and preview size, run the ltfsee fsopt command:

ltfsee fsopt { query [-G <gpfs_filesystem(s)>] } | { update [ -S <stub_size> ]
[ -R <read_starts_recall> ] [-P <preview_size>] [-F] -G <gpfs_filesystem(s)> }

To query the current file system level settings, run the ltfsee fsopt query command:

ltfsee fsopt query -G /ibm/gpfs

The -G <gpfs_filesystem(s)> option is not required, but can be used to specify one or more GPFS file systems to query. Multiple file system names must be separated by a space.

To update the file system level settings for stub size, read start recalls, or preview size, run the following command:

ltfsee fsopt update [-S <stub_size>] [-R <read_starts_recalls>]

[-P <preview_size>] [-F] -G <gpfs_filesystem(s)>

You must select one or more of the following parameters when you run the ltfsee fsopt update command:

•-S <stub_size>

Defines the size of the initial file part that is kept resident on disk for migrated files. The value must be a multiple of the file system block size and larger than or equal to the preview size.

Possible values: 0 - 1073741824

•-R <read_starts_recall>

When this feature is set to yes, reading from the resident file part starts a background recall of the file. During the background recall, data from the resident part can be read. The rest of the file can be read upon recall completion.

Possible values: yes | no | undef

•-P <preview_size>

Defines the initial file part size for which reads from the resident file part do not trigger recalls. The value must be smaller than or equal to the stub size.

Possible values: 0 - 1073741824

In addition, you can specify the -F option, which forces the settings to update even if a stub size change is requested while there are ongoing migrations.

Important: Using the -F option might result in some ongoing migrations that use the old stub size while others use the new stub size.

The -G <gpfs_filesystem(s)> option is not required, but can be used to specify one or more GPFS file systems to update. Multiple file system names must be separated by a space, as shown in the following example:

ltfsee fsopt update -S 10485760 -P 81920 -R yes -G /ibm/gpfs

ltfsee import

To add one or more tape cartridges to the IBM Spectrum Archive EE system and reinstantiates the files in the GPFS namespace (for more information about managing imports with the ltfsee import command and its options, see 7.21.1, “Importing” on page 210), run the ltfsee import command, as shown in the following example:

ltfsee import -p <pool_name> [ -l <library_name> ] -t <tape_id_1 tape_id_2 ... tape_id_N>

{ [[ -P <pathName> ] [ -o | -i | -r ] [ -R ]] | [ --offline ] }

Imported files will be in a migrated state, meaning that the data remains on tape. The data portion of the file is not copied to disk during the import.

Further you can specify one of the following optional parameters with the ltfsee import command:

•-p, --pool <pool_name>

The storage pool to which the imported tapes are assigned.

•-l, --library <library_name>

The library name, which can be omitted on single-library systems.

•-t, --tape <tape_ids>

The names (IDs) of the tapes to import.

•-P, --path {pathName}

Specifies the path name where the files are imported. If omitted, the import uses the default path (/<GPFS_Filesystem>/IMPORT). If the path does not exist, it is created. If there are multiple GPFS file systems mounted, this option is mandatory. For more information, see “Restoring file system objects and files from tape” on page 265.

•-o, --overwrite

Indicates that files are overwritten if they exist already. This option is mutually exclusive with -i, -r, and --offline. For more information, see “Restoring file system objects and files from tape” on page 265.

•-i, --ignore

Indicates that files are ignored if they exist already. This option is mutually exclusive with -o, -r, and --offline. For more information, see “Restoring file system objects and files from tape” on page 265.

•-r, --rename

Indicates that files are renamed if they exist already. This option is mutually exclusive with -i, -o, and --offline. For more information, see “Restoring file system objects and files from tape” on page 265.

•-R, --recreate

Indicates that files are imported in the specified path, without creating a tape ID directory. For more information, see “Restoring file system objects and files from tape” on page 265.

•--offline

Indicates that the tapes were exported with the --offline option. All files are restored to the original exported path. If any file was modified in the GPFS namespace or on tape, it will not be imported. This option is mutually exclusive with -p, -o, -i, -r, and -R, as shown in the following examples:

– ltfsee import -p pool1 -l lib1 -t D00279L5 (single or multiple libraries system)

– ltfsee import -p pool1 -t D00279L5 (single library system, library name may be omitted)

– ltfsee import -p pool1 -l lib1 -t D00279L5 1FA682L5 -P /importUser

– ltfsee import -p pool1 -l lib1 -t D00279L5 1FA682L5 -r

– ltfsee import -p pool1 -l lib1 -t D00279L5 1FA682L5 -R -o -P /importUser

– ltfsee import -p pool1 -l lib1 -t D00279L5 1FA682L5 --offline

ltfsee info command

To list current information about IBM Spectrum Archive EE jobs and scans (groups of jobs), and resource inventory for tapes, drives, nodes, pools, and files of the whole IBM Spectrum Archive EE system or its part related to one tape library, run the ltfsee info command. You do not need to have root user authority to run the ltfsee info command, as shown in the following example:

•ltfsee info <resource> [-l <library_name>]

•ltfsee info files -f <filepath_regular_expression> [-q]

•ltfsee info jobs [-l <library_name>]

•ltfsee info scans [-l <library_name>]

Where <resource> must be one of the following parameters:

•libraries (without the -l option)

•tapes

•pools

•nodes

•nodegroups

•drives

The following are additional options:

•-l

Show the information for the specified library. If -l is omitted, show the information for the whole system.

•-q

Do not check to see whether the file exists on the tape.

This option lists current IBM Spectrum Archive EE resource inventory information or information about ongoing migration and recall jobs or scans. A job refers to the migration or recall of a single file. A scan refers to a list of such jobs (usually originating from an IBM Spectrum Scale policy scan) that was submitted by using the migrate option, as shown in the following examples:

•ltfsee info jobs

•ltfsee info scans

•ltfsee info tapes

•ltfsee info drives

•ltfsee info nodes

•ltfsee info pools

•ltfsee info files -f <filepath_regular_expression> [-q]

For more information, see “Sample ltfsee info command output” to see sample command output for the following examples.

Sample ltfsee info command output

This section presents sample output for each option of the ltfsee info command.

Sample ltfsee info jobs command output

Example 11-2 shows sample output of the ltfsee info jobs command.

Example 11-2 Sample output of the ltfsee info jobs command

[root@carbite ~]# ltfsee info jobs

Job Type Status Idle(sec) Scan ID Tape Pool Library Node File Name or inode

Migration In-progress 0 852297473 IM1178L6 warning lto_ts4500 1 /ibm/gpfs/larry/LTFS_EE_FILE_Fa43W zQKcAeP2_j2XT9t.bin

Migration In-progress 0 852297473 IM1178L6 warning lto_ts4500 1 /ibm/gpfs/larry/LTFS_EE_FILE_JmkgS oqPX9FhRoDlgTdCnDttA3Ee0A24pfQfbeva2ruRvTp_mXYbKW.bin

Migration In-progress 0 852297473 IM1178L6 warning lto_ts4500 1 /ibm/gpfs/larry/LTFS_EE_FILE_lYO8u cO68bAzXBgPOTSKWHhU2lSv_LFFDAd.bin

Migration In-progress 0 852297473 IM1178L6 warning lto_ts4500 1 /ibm/gpfs/larry/LTFS_EE_FILE_MXJ4c h_BQdX25.bin

Migration In-progress 0 852297473 IM1178L6 warning lto_ts4500 1 /ibm/gpfs/larry/LTFS_EE_FILE_KDVmC Yoz3iQk2IUnvPcY2G7pqydvFBLWTxEQ7G3lDz_f3pKGG.bin

Migration In-progress 0 852297473 IM1178L6 warning lto_ts4500 1 /ibm/gpfs/larry/LTFS_EE_FILE_9xy6w Oj3YQvd6Vu_055v3t.bin

Table 11-1 describes the status codes that can be displayed by the IBM Spectrum Archive EE ltfsee info jobs command.

Table 11-1 Status codes for ltfsee info jobs

Status code	Description
Unscheduled	The Unscheduled status indicates that the job request is received but is not yet scheduled for work. For example, when a migration request to a single tape storage pool is received, the migration job is queued to be scheduled for migration and is assigned a job status of Unscheduled.
Scheduled	The Scheduled status indicates that the job request is scheduled for work. For example, when an unscheduled migration job gets scheduled for migration, the job status changes to Scheduled.
In progress	The In progress status indicates that initial processing for the job is in progress. For example, when data copying from GPFS to tape begins for a job that is scheduled for migration, the job status changes to In progress.
Copied	The data copying from GPFS to tape for the migration job is completed.
Event received	The Event received status indicates that for Selective bulk recalls, a file system event was received to perform a file state change from Migrated to Premigrated. This status occurs only for Selective bulk recall after the data portion of a file is transferred back to disk.
Finished	The Finished status indicates that either the file state change for recall was completed or a reclaim request was interrupted. If a job receives this status, it is in this status only for a short time before job deletion.
To delete	The status To delete indicates that an issue occurred and the corresponding job must be deleted. If a job receives this status, it is in this status only for a short time before job deletion. When this status occurs, investigate the ltfsee log file for an analysis.
Recall failed	The Recall failed status indicates the data transfer from tape to disk for failed. If a job receives this status, it is in this status only for a short time before job deletion. When this status occurs, investigate the ltfsee log file for an analysis.
Data transferred	The Data transferred status indicates that data transfer from tape to disk was successful.

Sample ltfsee info tapes command output

Example 11-3 shows sample output of the ltfsee info tapes command.

Example 11-3 Sample output of the ltfsee info tapes command

[[root@ltfs17 ~]# ltfsee info tapes

Tape ID Status Type Capacity(GiB) Free(GiB) Unref(GiB) Pool Library Address Drive

063AGWL5 Unavailable LTO5 0 0 0 - lib2 4099 -

YAM085L5 Unavailable LTO5 0 0 0 - lib2 4097 -

YAM080L5 Unavailable LTO5 0 0 0 - lib2 4102 -

012AGWL5 Unavailable LTO5 0 0 0 - lib2 4096 -

TYO305L6 Valid LTO6 2242 2238 0 pool18 lib1 259 00078B00F3

TYO263L6 Valid LTO6 2242 2242 0 pool17 lib1 1198 -

TYO291L6 Valid LTO6 2242 2242 0 pool17 lib1 1051 -

TYO303L6 Valid LTO6 2242 2242 0 pool18 lib1 261 00013B0037

TYO125L5 Valid LTO5 1327 1325 0 pool18 lib1 264 1013000125

TYO288L6 Valid LTO6 2242 2242 0 pool18 lib1 260 00013B0084

TYO287L6 Valid LTO6 2242 2242 0 pool18 lib1 262 00078D00C2

TYO201L6 Valid LTO6 2242 2238 0 pool18 lib1 263 00078D00BE

TYO292L6 Valid LTO6 2242 2242 0 pool17 lib1 1049 -

TYO260L6 Valid LTO6 2242 2241 0 pool17 lib1 1195 -

TYO304L6 Valid LTO6 2242 2238 0 pool17 lib1 1043 -

TYO310L6 Valid LTO6 2242 2238 0 pool17 lib1 1041 -

TYO279L6 Unavailable LTO6 0 0 0 - lib1 1214 -

TYO278L6 Unavailable LTO6 0 0 0 - lib1 1213 -

Table 11-2 describes the status codes for the ltfsee info tapes command.

Table 11-2 Status codes for the ltfsee info tapes command

Status code	Description
Valid	The Valid status indicates that the cartridge is valid.
Exported	The Exported status indicates that the cartridge is valid and is exported.
Offline	Offline status indicates that the cartridge is valid and is exported offline.
Unknown	The Unknown status indicates that the cartridge contents are unknown.
Unformatted	The Unformatted status indicates that the cartridge is not formatted. To use this tape with IBM Spectrum Archive EE, format the tape by using the ltfsee pool command with the format option.
Unavailable	The Unavailable status indicates that the cartridge is not available in the IBM Spectrum Archive EE system. Tapes that are newly inserted into the tape library have an Unavailable status. To recall files from a tape with this status, first import the tape by using the ltfsee import command. To add a tape with this status to the IBM Spectrum Archive EE system, complete the following steps: 1. Move the tape to a home slot by using the ltfsee tape move command. 2. Add the tape to a tape storage pool by using the ltfsee pool command.
Critical	The Critical status indicates that an attempt to write to this cartridge failed. To avoid data loss, recover the data on this cartridge by using the ltfsee recover command, and then discard this cartridge.
Write Fenced	The Write Fenced status indicates that an attempt to write to this cartridge failed, but was able to sync the files that were successfully migrated up to the write failure. To avoid data loss, recover the data on this cartridge by using the ltfsee recover command, and then discard this cartridge.
Warning	The Warning status indicates that a read failure occurred on this cartridge. To avoid data loss, move the data from this cartridge onto another cartridge by using the relocate_replica.sh script, and then discard this cartridge.
Error	The Error status indicates that the cartridge has an error and cannot be recovered. This cartridge cannot be used with IBM Spectrum Archive EE.
Write Protected	The Write Protected status indicates that the cartridge is write protected.
Duplicated	The Duplicated status indicates that there is more than one cartridge with this bar code. Remove the cartridge from the tape library.
Cleaning	The Cleaning status indicates that the cartridge is a cleaning cartridge.
Not supported	The Not supported status indicates that the cartridge is not supported by IBM Spectrum Archive EE. Only cartridges that are supported by IBM Spectrum Archive EE can be used.
Invalid	The Invalid status indicates that the cartridge is inconsistent with the LTFS format. To check and repair this tape before you add it to a tape storage pool, use the ltfsee pool add command with the check option.
Inaccessible	The Inaccessible status indicates that the tape is not allowed to move in the library. The tape might be stuck in the library or in one of the tape drives. For example, in a multiple node cluster, the tape is mounted by a tape drive that is assigned to a node that is not available.
Disconnected	The Disconnected status indicates that the EE and LE components that are used by this tape cannot communicate. The admin channel connection might be disconnected.
Exporting	The Exporting status indicates that EE is exporting this cartridge.
Unusable	The Unusable status indicates that the tape can’t be used.

Sample ltfsee info drives command output

Example 11-4 shows sample output of the ltfsee info drives command.

Example 11-4 Sample output of the ltfsee info drives command

[root@ltfs17 ~]# ltfsee info drives

Drive S/N Status Type Role Library Address Node ID Tape Node Group

00000XXXXX Not mounted LTO6 mrg lib2 257 3 - G1

F09CA15000 Not mounted LTO5 mrg lib2 258 3 - G1

1068000560 Stock UNKNOWN --- lib2 256 - - -

00078B00F3 Mounted LTO6 mrg lib1 259 1 TYO305L6 G0

00013B0084 Mounted LTO6 mrg lib1 260 1 TYO288L6 G0

00013B0037 Mounted LTO6 mrg lib1 261 2 TYO303L6 G0

00078D00C2 Mounted LTO7 mrg lib1 262 2 TYO287L6 G0

00078D00BE Mounted LTO7 mrg lib1 263 2 TYO201L6 G0

1013000125 Mounted LTO6 mrg lib1 264 1 TYO125L5 G0

Table 11-3 describes the status codes for the ltfsee info drives command.

Table 11-3 Status codes for ltfsee info drives

Status code	Description
Not mounted	The Not mounted status indicates that the tape drive is empty and there is no mount or unmount in progress for that tape drive.
Mounted	The Mounted status indicates that the tape drive mounted a cartridge. No operation is being done on that cartridge.
Mounting	The Mounting status indicates that a mount is in progress for that tape drive.
Unmounting	The Unmounting status indicates that an unmount action is in progress for that tape drive.
In use	The In use status indicates that an operation is being done on that tape drive. The ltfsee info jobs command should show a job in a corresponding state.
Stock	The Stock status indicates that the tape drive is removed from the library inventory or the drive information is not accessible.
Error	The Error status indicates that the tape drive reports a hardware error.
Not installed	The Not installed status indicates that the tape library reported an error condition when this drive was physically removed from it. If a tape drive is physically removed from the tape library, the tape drive disappears from the tape library inventory unless the library detects an error condition. For such an error condition, the drive status changes to a Not installed status.
Locked	The Locked status indicates that the tape drive is preserved for maintenance because the cartridge on this tape drive is in a critical condition.
Disconnected	The Disconnected status indicates that the EE and LE components that are used by this drive cannot communicate. The admin channel connection might be disconnected.
Undetermined	The source of the error cannot be determined.

Sample ltfsee info nodes command output

Example 11-5 shows a sample output of the ltfsee info nodes command.

Example 11-5 Sample output of the ltfsee info notes command

[root@ltfs17 ~]# ltfsee info nodes

Node ID Status Node IP Drives Ctrl Node Library Node Group Host Name

3 Available 192.168.209.161 2 Yes lib2 G1 ltfsee05.ltd.sdl

2 Available 192.168.208.18 3 No lib1 G0 ltfs18

1 Available 192.168.208.17 3 Yes lib1 G0 ltfs17

Table 11-4 describes the status codes that can be displayed by the ltfsee info nodes command.

Table 11-4 Status codes for the ltfsee info nodes command

Status code	Description
Available	The Available status indicates that the IBM Spectrum Archive LE+ component on this node is available for operation.
License Expired	The License Expired status indicates that the IBM Spectrum Archive LE+ component on this node has an expired license.
Unknown	The Unknown status indicates that the IBM Spectrum Archive LE+ component on this node is inoperable, or the node is down.
Disconnected	The Disconnected status indicates that the EE and LE component on this node cannot communicate. The admin channel connection might be disconnected.
Not configured	The Not configured status indicates that the work directory of LE is not correct. Reconfigure the node by stopping IBM Spectrum Archive EE and running the ltfsee_config -m ADD_NODE command on the node. Then, restart IBM Spectrum Archive EE.

Sample ltfsee info pools command output

Example 11-6 shows a sample output of the ltfsee info pools command.

Example 11-6 Sample output of the ltfsee info pools command

[root@ltfs17 ~]# ltfsee info pools

Pool Name Total(TiB) Free(TiB) Unref(TiB) Tapes Type Library Node Group

poolee05 0.0 0.0 0.0 0 - lib2 G1

pool18 12.2 12.2 0.0 6 LTO lib1 G0

pool17 13.1 13.1 0.0 6 LTO lib1 G0

Sample ltfsee info scans command output

Example 11-7 shows a sample output of the ltfsee info scans command.

Example 11-7 Sample output of the ltfsee info scans command

[root@ltfs17 ~]# ltfsee info scans

Scan ID Parent Queued Succeed Failed Canceled Library Ctrl Node

2391414785 - 10 0 0 0 lib1 ltfs17

2391415297 2391414785 10 0 0 0 lib1 ltfs17

Sample ltfsee info files command output

Example 11-8 shows a sample output of the ltfsee info files command.

Example 11-8 Sample output of the ltfsee info files command

[root@ltfs17 MIG_20151116_170428]# ltfsee info files *

Name: file_1M_1.0

Tape id:TYO263L6@lib1:TYO305L6@lib1 Status: migrated

Name: file_1M_1.1