Guy,
I'm not sure I caught the start of this thread... but I can add
that I've found amplot very valuable for helping me understand
what is occuring, bottle necks, scheduling and such.
Brian
On Mon, May 01, 2006 at 11:08:57AM -0400, Jon LaBadie wrote:
> On Mon, May 01, 2006 at 10:20:13AM -0400, Guy Dallaire wrote:
> > Is there a way to tell amanda to wait until x% of the backups have been
> > dumped on the holding disk before it starts to put the files to tape ?
> >
> > Right now, my tape drive seems to start/stop often and I don't think it's
> > good for the tapes/the motors/the performance.
>
> I can think of three scenarios for causing this:
> a) one or more DLE's bypassing the holding disk and the combination
> of dumping, network, and feeding the drive is too slow
> b) your tape is really high speed relative to your computer and
> interface (I just had this with an lto drive and old scsi card)
> c) you have a lot of small DLE's
>
> For c, I don't think waiting for X% to complete would help. Amanda doesn't
> tape from holding disk until a DLE is complete and I think there would
> always be a pause between DLEs.
>
> For b it is a hardware issue and for a, unless compounded by b, you have
> to get the DLEs to the holding disk rather than direct.
>
>
> As to a direct answer to your question, there was a "taperwait" patch
> posted to the hackers list. You could find that and see if it fits
> your needs. The patch was not incorporated as further discussion on
> the list suggested an alternative design which is awaiting development.
>
> --
> 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)
---
Brian R Cuttler brian.cuttler AT wadsworth DOT org
Computer Systems Support (v) 518 486-1697
Wadsworth Center (f) 518 473-6384
NYS Department of Health Help Desk 518 473-0773
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