Re: garbage collect: free orphaned chunks from disks?

On Wed, Mar 08, 2023 at 12:20:00PM +0100, Heiko Schlittermann wrote:
>Hi,
>
>Jens Berg <[email protected]> (Mi 08 Mär 2023 10:06:34 CET):
>> She does in the moment a tape (= slot) is re-used.
>…
>> Remember that amanda was initially designed to work with tapes and that
>
>Olivier <[email protected]> (Mi 08 Mär 2023 11:46:37 CET):
>> While the tape/slot could free the level 1 dumps for a-disk, there could be
>> some DLE for other disks/hosts that are still valid on that tape/slot.
>
>
>Yes, I know that amanda was designed for tapes initially (and I'm still
>using it happily with tapes.).
>
>The "disk garbage collection" was just a minor issue I found when
>checking what space is available on one of our disk based backup
>servers.
>
>Thanks for the input.

Thinking outside of amanda provided tools:

1. Assuming tar is your backup program, the "garbage" files do still
    contain recoverable data.  I did make use of this "once" to recover
    a file deleted just before that oldest full dump.

2. The files on vtapes are named such that a find(1) command could be
    constructed to scan the backup disks looking for the "garbage" files
    (they would be "older" than the oldest full dump) and either list
    them or delete them.

jl

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