In this chapter, you will reuse the space in SGI 400 VTL shelf 0 (library SGI-C00) reclaimed in “Free Space in Library SGI-C00 for Dump Tapes” in Chapter 3 to create a set of dump tapes for the DMF system. There will be one set of dump tapes for the entire system, all located on shelf 0.
 | Note: All of the dump tapes must be on a single shelf. The sample DMF configuration file defines this to be shelf 0. If you want to use a different shelf, you must modify the DMF configuration file drivegroup object and the procedures in this guide accordingly. |
This chapter discusses the following:
| Note: This can be a time-consuming process. |
Do the following to reuse the space reclaimed in “Free Space in Library SGI-C00 for Dump Tapes” in Chapter 3:
Start the VTL Console as directed in “Subsequently Connecting to the VTL Server ” in Chapter 3.
Open the left-hand tree and place the cursor over the SGI-C00 library name:
VTL0 -> Virtual Tape Library System -> Virtual Tape Libraries -> SGI-C00
Right-click and select Properties, as shown in Figure 4-1.
Note: In the 7.5 version of the GUI, the menu is slightly different: Then set the Maximum Capacity field in the Tape Properties tab to the Dump_Tape_Size value you determined in step 2 of “Free Space in Library SGI-C00 for Dump Tapes” in Chapter 3 and click OK. For example, Figure 4-3 shows setting the size to be 116 GB for dump tapes.
Note: This example uses 116 GB as an illustration.You should use a value appropriate for your site. Place the cursor over the library name, for example:
VTL0 -> Virtual Tape Library System -> Virtual Tape Libraries -> SGI-C00
Right-click and select New Tape(s).
Repeat the actions in steps 1 through 8 of “Configure Virtual Migration Tapes for the Library” in Chapter 3 to create the required number of dump tapes.
The DMF library server uses the barcode (or volume serial number, VSN) when selecting tapes. To make the virtual tapes created in the previous section ready for use as dump tapes, you must run the dmreadycopantapes script to relabel each virtual tape's barcode so that it indicates the specific RAID set in which the tape is stored, allowing DMF to optimize I/O to and from the shelf. (For example, C009AA might be transformed into D00AAA, where the first character D indicates that it is a dump tape, and the fourth character identifies the RAID set to DMF.)
Do the following:
Ensure that there is no other activity on the VTL Console or on the VTL application server that controls first library (such as VTL0 for library SGI-C00). This is a requirement for the duration of this procedure.
Run the dmreadycopantapes script on the VTL application server from the /usr/local/dmf directory and provide the library portion of the barcode (the first three characters, such as C00 in C00AAA).
The script will output an executed successfully line for each barcode that is changed. Depending upon the number of tapes and drives, this can be a time-consuming process.
For example, for dump tapes created on library SGI-C00 , which have barcodes that begin with C00:
[root@VTL0 vtl]# cd /usr/local/dmf [root@VTL0 dmf]# ./dmreadycopantapes -d -l C00 Command: settapeproperty executed successfully. ... Command: settapeproperty executed successfully. [root@VTL0 dmf]#
For more information, add the -v option.
Caution: The script must complete successfully in order for DMF to function properly. If there are errors, fix them before continuing. If necessary, contact SGI Support.
Do the following to import the dump tapes for use by OpenVault and DMF:
Stop and restart OpenVault in order to refresh the cartridge inventory:
dmfserver# ov_stop dmfserver# ov_start
For example:
burn# ov_stop OpenVault clients stopped Successfully initiated shutdown on OpenVault server burn with the message: Shutdown by root burn# ov_start OpenVault server started OpenVault clients started
After OpenVault starts, wait a moment for other initialization to fully take place.
View the available library and drives by using the following ov_stat(8) command:
burn# ov_stat -ld Library Name Broken Disabled State LCP State C00 false false ready ready Drive Name Group Access Broken Disabled SoftState HardState DCP State Occupied Cartridge PCL C00d1 C00 true false false ready unloaded ready false C00d2 C00 true false false ready unloaded ready false C00d3 C00 true false false ready unloaded ready false C00d4 C00 true false false ready unloaded ready false C00d5 C00 true false false ready unloaded ready false C00d6 C00 true false false ready unloaded ready false C00d7 C00 true false false ready unloaded ready false
List the slot information to see all of the dump tapes that can be imported:
dmfserver# ov_stat -s -L OV_library_name
For example, for OpenVault library C00 (SGI 400 VTL library SGI-C00):
burn# ov_stat -s -LC00 Library Name Broken Disabled State CP State C00 false false ready ready Library: 'C00' Library Slot Name Slot Type Occupied PCL Cart ID C00 slot 1000 LTO true D00ABW C00 slot 1001 LTO true C00BAB ooA69k0rR6IACBC+ C00 slot 1002 LTO true C00CAC ooA69k0rR6IACeSl C00 slot 1003 LTO true D00DBX C00 slot 1004 LTO true C00EAE ooA69k0rR6IAC7lx C00 slot 1005 LTO true C00FAF ooA69k0rR6IADY40 C00 slot 1006 LTO true D00GBY C00 slot 1007 LTO true C00HAH ooA69k0rR6MAACDa C00 slot 1008 LTO true C00IAI ooA69k0rR6MAAfWQ C00 slot 1009 LTO true D00JBZ ... Library Bay Name Slot Type Total Slots Free Slots C00 bay 1 DLT 0 0
The above output shows that the dump tape whose PCL column contains the VSN (barcode) D00ABW has not yet been imported into OpenVault, because it has no cartridge ID listed in the Cart ID column. (The VSNs for the migration tapes, such as C00BAB, do have cartridge IDs.)
Import the dump tapes for the library by tape type into OpenVault and add them to DMF according to the DMF configuration file TASK_GROUPS name by entering the following:
dmfserver# dmov_loadtapes -t Ultrium4-800 -l OV_library_name TASK_GROUPS_name
This command will invoke an editor session. If there are any tapes that you do not want added to the dump tapes list, such as any that should be reserved for use by an application other than DMF, you should delete those VSNs from the list. Otherwise, you should exit the editor.
For example, for SGI 400 VTL library SGI-C00, you would enter C00 (the corresponding OpenVault library name) and dump_tasks (the corresponding TASK_GROUPS name from the sample DMF configuration file for SGI 400 VTL use):
burn# dmov_loadtapes -t Ultrium4-800 -l C00 dump_tasks ... (editor session is invoked) Unused tapes in library C00. Delete any you do not wish to use for task group dump_tasks. D00ABW D00DBX D00GBY ... (exit the editor session) ... (wait a few moments for the process to complete) ... Loading tapes into /dmf/home/dump_tasks/tapes for task group dump_tasks. Creating Ultrium4-800 cartridges in cartgroup carts for dump_tasks.
The dump tapes for the library are now imported and ready for use.
Verify that the dump tapes now have OpenVault cartridge IDs assigned to them by examining the output from the following command:
dmfserver# ov_stat -s -L OV_library_name
For example, the following output shows that the dump tape with the VSN D00ABW in the PCL column now has an OpenVault cartridge ID of ooA69k0sSawABQWg:
burn# ov_stat -s -L C00 Library Name Broken Disabled State LCP State C00 false false ready ready Library: 'C00' Library Slot Name Slot Type Occupied PCL Cart ID C00 slot 1000 LTO true D00ABW ooA69k0sSawABQWg C00 slot 1001 LTO true C00BAB ooA69k0rR6IACBC+ C00 slot 1002 LTO true C00CAC ooA69k0rR6IACeSl C00 slot 1003 LTO true C00BAB ooA69k0rR6IACBC+ C00 slot 1002 LTO true D00DBX ooA69k0sSawABtiq C00 slot 1004 LTO true C00EAE ooA69k0rR6IAC7lx C00 slot 1005 LTO true C00FAF ooA69k0rR6IADY40 C00 slot 1006 LTO true D00GBY ooA69k0sSawACK2A C00 slot 1007 LTO true C00HAH ooA69k0rR6MAACDa C00 slot 1008 LTO true C00IAI ooA69k0rR6MAAfWQ C00 slot 1009 LTO true D00JBZ ooA69k0sSawACoJB ... Library Bay Name Slot Type Total Slots Free Slots C00 bay 1 DLT 0 0
To test that OpenVault can mount a dump tape from the library for the dmf application, enter the following:
dmfserver# ov_mount -A dmf -V VSN |
For example, to test that OpenVault can mount the tape with the VSN (barcode) D00ABW and then exit:
burn# ov_mount -A dmf -V D00ABW Mounted D00ABW on /var/opt/openvault/clients/handles//3yhZogXOqM4P burn:/sys/class/fc_host/host5 # exit exit |