Tape is not getting empty after expiring
Updated: 21 May 2010 | 9 comments
This issue has been solved. See solution.
i am expiring the backup from Netbackup administration console-->Catalog but when i am trying to use the below command i am watching that the status is showing FULL....even i close and open the command prompt and even Netbackup Administration Console as well....what can happen????
C:\Program Files\Veritas\NetBackup\bin\goodies>available_media.cmd
My second point. How can i view how many space is available in Tape from GUI (Netbackup Administration Console) and what is the state of Tape (Available, Active, Full)
Thanks in advance
discussion Filed Under:
Comments
Hi Zahid, Are you still
Hi Zahid,
Are you still having any images left out in the tape to be expired?
When all the image expires on a tape, then the tape is ready to be overwritten.
1st Thanks for your kind
1st Thanks for your kind reply dude.....
YES i have not expired all images. i just removed few images from the tape via Netbackup administration console-->Catalog ...is it must that i should remove all the images from tape if i want to see the tape is empty from the command available_media???
2nd i have to remove all images if i want to write new backup on the tape??
Any comment will be appreciated. Mark as Solution if your query is resolved
__________________
Thanks in Advance
Zahid Haseeb
zahidhaseeb.wordpress.com
Point 1: Can you
Point 1:
Can you try bpmedialist -m <media_id> command shows for the tape? If its FULL then
do
Expire all the images on the tape
Run bpmedialist -m <media_id>. this command will not list the tape if the tape is moved to scratch.
Run bpmedialist -summary to check if the tape you are looking for is not listed.
done
Point 2:
You need to expire all the images from the tape to be reused. When all the images in the tape is expired the tape will also expire and will be moved to scratch. This means netbackup has chosen a tape which is expired and ready to be reused.
If you are sure about
If you are sure about expiring the tape use thiscommand:
bpexpdate -d 0 -m media_id
Netbackup will automatically overwrite the data on tape. The command above just remove the catalog entries.
ok sriram thanks. basically
ok sriram thanks. basically what i was doing ...actually i wanted to keep some images from the tape bcuz some images were important for me thats why i was not removing all the images from the tape via Netbackup GUI administration Console ..so you mean i should remove all the images from the Tape if i want to reuse the tape.right? .....
my conclusion is that we have to remove all the images from the Tape not partial ...right?
Any comment will be appreciated. Mark as Solution if your query is resolved
__________________
Thanks in Advance
Zahid Haseeb
zahidhaseeb.wordpress.com
yes
Tapes are linear - meaning that they write from the front to the back.
if we look at a tape.
BOT|day1image|day2image|blankspace|EOT
now the day1image expires on the tape - the assigned date does not change and you have this.
BOT|expiredimage|day2image|blankspace|EOT
if you try to write to this tape again it will ONLY write in the blankspace as tapes are Linear - meaning they can only append (tapes cannot write here and there like a disk can)
Now day2image expires - the assigned date of the tape goes blank - no assigned date
-------
Now look at it with multiplexing.
you use the tape - it gets an assigned date.
BOT|server1part1|server2part1|server1part2|server2part2|blankspace
if the backup for server1 fails or if the backup image expires then you have this
BOT|expiredimage|server2part1|expiredimage|server2part2|blankspace
remember tape is lienier it cannot go back and write in those spaces where the failed image went.
So if a tape is full it cannot be written to again until ALL the images on the tape have expired.
I don't have to know how to spell....I work on Unix.
NetBackup 7.0.1 - AIX & Windows
Thats correct
Thats correct
Thanks for kind replies of
Thanks for kind replies of all guys
Any comment will be appreciated. Mark as Solution if your query is resolved
__________________
Thanks in Advance
Zahid Haseeb
zahidhaseeb.wordpress.com
That's correct
Raghuraam
Best Regards
RrV
Would you like to reply?
Login or Register to post your comment.