Amanda-Users

Re: degraded mode

2003-11-17 23:12:50
Subject: Re: degraded mode
From: Jon LaBadie <jon AT jgcomp DOT com>
To: amanda-users AT amanda DOT org
Date: Mon, 17 Nov 2003 23:10:59 -0500
On Mon, Nov 17, 2003 at 10:35:28PM -0500, Eric Siegerman wrote:
> On Tue, Nov 18, 2003 at 12:52:04PM +1100, Barry Haycock wrote:
> > FAIL driver <hostname> /dev/rdsk/c0t1d0s7 2003112 2 [can't dump no-hold
> > disk in degraded mode]
> > [...]
> > What is degraded mode?
> 
> It's what happens when there's no tape in the drive, or no more
> room on the tape, or for whatever other reason, Amanda decides
> that the tape has become unusable.  In that case, Amanda tries to
> dump as much as it can to the holding disk, and leaves it there
> for you to amflush to tape later.

I think degraded mode is entered a little later than just "no tape".
Degraded is entered when amanda can't write to tape AND the amount
of space on the holding disk drops below the "reserve" percentage.
In degraded mode, amanda no longer does level 0 dumps, only incrementals.

-- 
Jon H. LaBadie                  jon AT jgcomp DOT com
 JG Computing
 4455 Province Line Road        (609) 252-0159
 Princeton, NJ  08540-4322      (609) 683-7220 (fax)

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