I realize this isn't the correct forum, but as long as
your are already on the subject I'm hoping you will not
mind too much.
I have one system, just one, that I do not run amanda on
but perform backups of. Its a Redhat Linux rel 7.2, code
name Inigma, kernel 2.4.9.3-1, with a DLT 8000 drive. We
are running out of tape during our nightly dump and can't
seem to figure out the correct drive parameters to either
use better blocking or turn on compression.
Yes, I've been following this discussion but we haven't
been successful.
Current command is
# dump 0udsf 49125 67854 /dev/nst0 /iarcvol
(I'm not primary on that system, I'm not really sure where
these values originated but have been involved in testing
tweeking them).
Only about 18 of the 25 gig make it to tape and a DLT8000
should have sufficient capacity to dump all the date with
room to spare.
thanks,
Brian
> Gene Heskett wrote:
> > On Wed March 12 2003 09:16, Eric Sproul wrote:
> >
> >>On Tue, 2003-03-11 at 14:39, Gene Heskett wrote:
> >>
> >>>Two other points come up here, Eric.
> >>>
> >>>1. When a tape is inserted in most modern drives, the "tape
> >>>recognition cycle" will discover that this tape has been
> >>>compressed previously, and will turn the compression back on
> >>>regardless of your wishes.
> >>
> >>Sounds good, so if I insert a tape that I *suspect* was written
> >>compressed, but I check tapeinfo and it says the drive is still in
> >>uncompressed mode, then I know that tape is OK, right?
>
> You have to read something on it first to be really sure that the
> drive did a "recognition cycle". Something like:
> dd ibs=256K if=/dev/your/tapedev of=/dev/null count=1
>
> (blocksize equal to or larger than the first block on tape is fine)
>
>
> --
> Paul Bijnens, Xplanation Tel +32 16 397.511
> Technologielaan 21 bus 2, B-3001 Leuven, BELGIUM Fax +32 16 397.512
> http://www.xplanation.com/ email: Paul.Bijnens AT xplanation DOT com
> ***********************************************************************
> * I think I've got the hang of it now: exit, ^D, ^C, ^\, ^Z, ^Q, F6, *
> * quit, ZZ, :q, :q!, M-Z, ^X^C, logoff, logout, close, bye, /bye, *
> * stop, end, F3, ~., ^]c, +++ ATH, disconnect, halt, abort, hangup, *
> * PF4, F20, ^X^X, :D::D, KJOB, F14-f-e, F8-e, kill -1 $$, shutdown, *
> * kill -9 1, Alt-F4, Ctrl-Alt-Del, AltGr-NumLock, Stop-A, ... *
> * ... "Are you sure?" ... YES ... Phew ... I'm out *
> ***********************************************************************
>
>
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