>Date: Fri, 8 Dec 2000 10:21:36 -0800
>From: peanut butter <[EMAIL PROTECTED]>
>Hmmmm. Ok. But what factors would Amanda see as a need to
>"promote" a disk?
You might want to think of it as "opportunity", vs. "need". Remember,
"Good Thing". :-)
>If a level 0 is done and then subsequent level
>1's and maybe a level 2 ensue, why would Amanda suddenly feel the need
>to think, "hmmmm, I'll do another level 0 on that disk"?
Because the tradeoff seems worthwhile. If she could get away with it,
the ideal would be a full backup each time amdump is run.
>Why not go to level 3 if level 2 isn't doin' it for her anymore?
Depends on the dumpcycle & runspercycle, as well as how much data is
being backed up -- htat is, the amount of data needed to record a backup
of a given level.
For example, if most of the files for a given filesystem just got
modified, she might as well (in all probability) jst do a level 0, vs.
an "incremental" where nearly everything is copied anyway.
>You are right, it's not a bad thing but it does seem unnecessary and, if
>so, uses unnecessary tape.
I'd be a little more concerned about "unnecessary time" than
"unnecessary tape" -- but that's just me. :-) The tape usage is at the
granularity of an integral number of tapes -- if amanda writes on a tape
at all during an amdump (or amflush) run, she's written on it, period.
Might as well take advantage of the rest of the tape, too.
Cheers,
david
--
David Wolfskill [EMAIL PROTECTED] UNIX System Administrator
Desk: 650/577-7158 TIE: 8/499-7158 Cell: 650/759-0823
