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Amanda backup

Posted on 2007-11-25
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Last Modified: 2013-12-16
I have setup Amanda to make backups.  It seems to be backing up without any problems.  I am also able to restore with no problems.  The question I have is that when it backs up, I see the light on the backup drive working away as it should, but when I do a restore, the light does not come on even though it restores successfully.  It is setup to use a holding disk (diskdir) at /var/tmp/amanda and the disksize is set to 2 GB.  If the light is not coming on during a restore, that tells me that the backup may be pulling it from the holding disk.  Is this normal?  I would think it would pull it from the tape itself.  What is the purpose of the holding disk?  If it is not necessary, how do I eliminate it altogether?
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Question by:bleujaegel
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by:fatblowfish
ID: 20345475
Yes, it seems that you are restoring from the holding disk itself. The holding disk is like a temporary buffer before writing to the tape itself. It's your own call on how to manage the use of the holding disk. For example, you might want to retain data in the holding disk for a week before finally getting rid of it (amflush). Seems feasible, right? If some guy asks you to restore something from last week, you wouldn't have to pull data from a slow-grinding tape, unless you have to. If you want to flush out the holding disk's contents immediately after a backup, that can be done as well.
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by:bleujaegel
ID: 20345920
Do you know how to force it to pull from the tape instead of the holding disk?
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fatblowfish earned 500 total points
ID: 20348741
I've never encountered your situation yet...
You could try deleting the contents of the holding disk, to make sure it fetches from tape. That's one easy way to try it.
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by:Computer101
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Forced accept.

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