Amanda-Users

Re: degraded mode

2003-02-13 11:31:58
Subject: Re: degraded mode
From: Brian Cuttler <brian AT wadsworth DOT org>
To: Toomas Aas <toomas.aas AT raad.tartu DOT ee>
Date: Thu, 13 Feb 2003 09:46:38 -0500 (EST)
Hello Toomas,

I'd thought degraded meant a performance loss but the data still
moved to tape. If degraded means no tape, files left in holding
partition then what is the term for moving to tape directly ?

On another note, to follow up, or ask again on a note I posted a
few days ago...

Last night my jukebox should have moved back to the lowest number
slot with a valid tape, from the highest number slot. ie, amanda
#1 needed to move from NEWTONL09 tape in slot 9 to NEWTONL01 tape
in slot 1 and amanda # 2 should have moved from NEWTONR09 in slot
9 to NEWTONR05 in slot 5 (where slots 1-4 are being saved for the
Saturday only Amanda # 3 doing always-full with yet another tape
naming scheme).

Anyway, this is the 2nd time we failed to move the tape to a lower
slot number, I will include the amdump mail below.

-- from amdump email --

*** A TAPE ERROR OCCURRED: [label NEWTONL01 or new tape not found in rack].
Some dumps may have been left in the holding disk.
Run amflush to flush them to tape.
The next tape Amanda expects to use is: NEWTONL01.

-- end email inclusion --

Last time this occured I run amcheck which found the tape and then
amflush ran correctly.

This time I ran only amflush and the tape was found and the flush
ran correctly.

humm, details.

Solaris 8, Amanda 2.4.2p2 with chg-zd-mtx from 2.4.3, MTX 1.2.16rel,
tape drive is an LTO, jukeboxes are SUN Storedge 9, ie HP C7145


                                                thanks,

                                                Brian

> Hi!
> 
> > Since this left /amanda/work as unavailable I'd have expected amanda
> > to have run in degraded mode writing directly to the tape drive, 
> > however amanda reported that there was no more room in the work area
> > and exited without performing any dumps at all.
> 
> Isn't the term 'degraded mode' used in the situation exactly opposite 
> to yours, i.e. when the tape is not available but holding disk is then 
> Amanda tries to put as much of stuff as possible on the holding disk?
> 
> I still think, though, that in your situation dumps should have gone 
> directly to tape.
> --
> Toomas Aas | toomas.aas AT raad.tartu DOT ee | 
> http://www.raad.tartu.ee/~toomas/
> * I haven't lost my mind; I know exactly where I left it.
> 


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