On Wed, Aug 29, 2018 at 18:38:11 +0000, Ryan, Lyle (US) wrote:
> I have now cut the dumpcycle down to 10, and the tapecycle down to 20, and 
> was hoping Amanda could recover.
> But I'm still getting "out of holding space in degraded mode" in the logs, 
> and Amanda seems totally stuck.
> 
> How would I start over, throw away all the backups made so far, and begin 
> with fresh/empty tapes?
> Also, after changing the config file, do I have to restart Amanda to get it 
> to reread the config?

Presumably by now you have already resolved your original situation way
or another, but just to answer your questions: 

Amanda uses the dumpcycle/tapecycle/etc. info only during the planning
phase, which happens at the beginning of the amdump run; once it
generates a plan for that run, it won't change the plan, so editing the
config won't make a difference until the next run.

(Note that Amanda is not like a normal system daemon where you would
expect it to run all the time but might restart it to load a new
configuration file.  Amanda normally runs for a few hours then finishes,
and the new configuration would be used when it is kicked off again the
next time.)


If the "only" problem you have is that your filesystem is full, you can
probably get out of that jam by manually deleting handful of large
"000nn.*" files out from under the "slot*" directories in your vtape
directory tree.  Pick files from the oldest volumes; as long as you
don't ever try to recover from those volumes, Amanda shouldn't care that
the actual files no longer exist under that vtape slot directory.  (As
soon as Amanda is ready to reuse that volume, it will just delete
everything in that slot directory anyway, and remove mentions of the old
contents of that volume from its catalog.)


You can also take a look at the "amrmtape" command for a less back-door
approach; something like "amrmtape --erase --keep-label" might do what
you need to free some space by deleting the oldest volumes.  (I've never
actually used it myself.)


If you really want to start the whole thing over from scratch, this Wiki
page gives an overview of the process:

  
http://wiki.zmanda.com/index.php/Amanda:Ok,_I%27m_done_with_testing_Amanda,_now_I_want_to_put_it_in_production._How_can_I_reset_its_databases_so_as_to_start_from_scratch%3F
 
.  (The page predates vtapes, though; in your case since the who point
is to free up space on the destination drive, you'd also need to
manually purge the files out of the vtape slot* directories up front,
rather than just waiting for the deletions to happen as the volumes are
reused over time.)

                                                        Nathan

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