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Import Multi-tape archive sets without slow scanning each tape

Views: 366
Votes: 0
Posted: 03 Oct, 2018
If you have a multi-tape set that contains a single archive, it is possible to speed up the import.
Instead of scanning all of the tapes in a set, only scan the LAST tape in each set.  Once the scan of the last tape completes, you will have tape entries in the Tapes datatable that look like this:
Note that ONLY the last tape is shown instead of all three.  Next, examine the Archives tab and select the archive for the set that was imported.  Your display will look like this:


Note that the system is reporting that the tapes that were NOT scanned are on the Stage Disk.  You will fix this in the Command Console in a Terminal .  These are the steps you will take.  Start a Terminal and enter the following command:

$ /usr/local/bru -server/bru-server.cmd -v admin localhost

You will be returned to a blank line.  Enter the BRU Server admin user password (your input will be in green - note that "password" is not a good password and is only used for demonstration here):

password
connected
input:

Examine the archives datatable and note the archive ID in the list from the screens above:

show archives
5ba11d8fe4cf

Examine that archive:

input:
show archives 5ba11d8fe4cf
Creation date                    :  Sep 18 08:44:15 2018
Machine                          :  labmacpro3
Job that created this archive    :  3 Tape Set Test
Type of archive                  :  
Tape List                        :  ['', '', 'TG5024L6']
Archive start blocks             :  [-1, -1, 0]
Who created this archive         :  

Reset the type for the job to "Full":

input:
setc archives 5ba11d8fe4cf type "Full"
input:
show archives 5ba11d8fe4cf
Creation date                    :  Sep 18 08:44:15 2018
Machine                          :  labmacpro3
Job that created this archive    :  3 Tape Set Test
Type of archive                  :  Full
Tape List                        :  ['', '', 'TG5024L6']
Archive start blocks             :  [-1, -1, 0]
Who created this archive         :  

You will now add the entries for the tape barcodes for the missing tapes.  Get the tapes in order and copy their barcodes.  These will be the list passed to the setc command:

input:
setc archives 5ba11d8fe4cf tapes ['TG5022L6', 'TG5023L6', 'TG5024L6']
input:
show archives 5ba11d8fe4cf
Creation date                    :  Sep 18 08:44:15 2018
Machine                          :  labmacpro3
Job that created this archive    :  3 Tape Set Test
Type of archive                  :  Full
Tape List                        :  ['TG5022L6', 'TG5023L6', 'TG5024L6']
Archive start blocks             :  [-1, -1, 0]
Who created this archive         :  

Finally, update the starting block for the archive on those tapes. Since this is a set with one archive, all of the start points will be 0:

input:
setc archives 5ba11d8fe4cf start [0, 0, 0]
input:
show archives 5ba11d8fe4cf
Creation date                    :  Sep 18 08:44:15 2018
Machine                          :  labmacpro3
Job that created this archive    :  3 Tape Set Test
Type of archive                  :  Full
Tape List                        :  ['TG5022L6', 'TG5023L6', 'TG5024L6']
Archive start blocks             :  [0, 0, 0]
Who created this archive         :  
input:

Return to the GUI Console and Refresh the Archives panel:



Note that the proper information is displayed in the "Tapes in Archive" list.
Others in this Category
document Suggested BRU Block & Write Cache/Buffer Sizes and Timeout Settings for Tape Backups
document Using Multiple Stage Destinations with BRU Server 2.x
document Information About Inconsistent Tapes
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document How do I create a human readable catalog file from BRU Server?
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