Hi,
What I understand is taper.c program read configuration of tapetype from
amanda.conf
If you set the length of tape is 200GB then taper limits the data copied to
tape less than or equal 200GB. I set the length is 400GB that why the first
tape can keep upto 400GB. I test this definition many times and it works
well. Day by day my data grow up (Now nearly 900GB). And it jump to second
tape. When second tape full it jump to third. Now I reconk second tape and
so forth only backup to a native of LTO2 (200GB).
With 900GB of data I setup 3 tapes to write.
When first tape reach 330GB there is 100GB file to write so it exceed 400GB.
That why it jump to tape 000021.
When 2nd tape write to a file exceed 200GB it jump to 3rd one (000022).
I think that is the bug in taper program which does not clear a size buffer
Yung
On Mon, Sep 12, 2005 at 10:45:19AM +1000, Yung Le wrote:
> Hi,
> I am backup the systems using amanda version 2.4.4p2 with tape array
> DELL Power Vault 132T LTO2 hardware compress (24 tapes inside).
>
> The configure of LTO using
> define tapetype LTO2 {
> comment "LTO2 tape drives"
> length 406122 mbytes # 400 Gig tapes
> filemark 9721 kbytes
> speed 2272 kbytes # 1.5 Mb/s
> }
>
> But when I backup. Only first tape can backup 400GB. The rest of tapes
> backup only 200GB.
> Label Time Size % Nb
> 000020 13:45 336315.1 83.1 114
> 000021 2:35 158061.3 38.9 8
> 000022 2:21 191737.2 47.2 8
>
> Do you know how to setup in config file let amanda can backup all
> tapes up to 400GB? Is it bug in software? Any body has the sam problem
> with me? Regards,
> Yung
>
To my recollection LTO-2 has a native capacity of 200GB,
not 400GB. Did you run amtapetype and have it report
a capacity of 400GB. Or are you just believing the manufacturer's
literature that you will be able to squeeze 400GB onto their 200GB tapes?
Are you using the tape drives compressor?
Or are you using software compression?
Or perhaps both?
If both, don't expect your tape drive to
compress the data any further. Be pleased
if it does, but don't expect it.
How much of your actual disk data do those
336, 158, and 192GB represent?
--
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)
-----Original Message-----
From: owner-amanda-users AT amanda DOT org [mailto:owner-amanda-users AT amanda
DOT org]
On Behalf Of Jon LaBadie
Sent: Monday, 12 September 2005 12:55 AM
To: amanda-users AT amanda DOT org
Subject: Re: Tapes offsite
On Sun, Sep 11, 2005 at 06:45:45AM +0200, Jasper Aukes wrote:
> Hi,
>
> I've been using Amanda for about 8 years now and never bothered to keep
> tapes offsite for several reasons.
> Recently I purchased a DDS5 deck with 30 tapes to be able to start saving
> tapes offsite every now and then.
>
> To be able to tell what tapes I need to take, I wrote a small script.
> Perhaps it's usefull to some of you?
>
> Please notice that it's under construction and it only considers level 0
and
> 1 dumps. I should enhance the script to also consider level 2 and perhaps
> even 3 or 4.
>
> I'll be happy reading your comments on it.
The first comment is a question, what is your criteria for deciding a tape
needs to be taken offsite? My quick experiment suggests it is a minimum of
back to the the most recent level 0 of every client encountered.
That criteria may be different for different sites. For example, I try to
keep the most recent dumps onsite figuring they are the most likely to be
wanted for a "I deleted a file" type of recovery. I'd love to get that
RAIT config working where it mirrors my tape changer and some vtapes.
Then I could leave the vtapes "onsite" and the physical tapes offsite.
It did need addition of support for extra levels for me to run it. I have
no idea if my changes were complete, just sufficient for a sample run.
The changes I made were dupicating LevelOne() as LevelTwo and LevelThree
and adjusting PreHouseKeeping.
You might put some comments near the top about what parameters need to be
adjusted for local usage (location of perl, amadmin, config name, ...)
>
> Kind regards,
>
> Jasper Aukes
> #!/usr/bin/perl -w
>
> use strict;
> my
($AMADMIN,$CONFIG,$COMMAND,@output,$host,$filesystem,$level,$tape,$status,$l
asthost,$lastfilesystem,$neednull,$needone,%tapes);
>
> &Init;
> &Collect;
> &Report;
>
> sub Init {
> $AMADMIN = "/usr/sbin/amadmin";
> $CONFIG = "thuis";
> $COMMAND = "$AMADMIN $CONFIG find";
> @output = `$COMMAND`;
> die "Unable to run '$COMMAND'\nPlease run as user 'amanda' or
'root'" if ($?);
> }
>
> sub Collect {
> while (@output) {
> my $line = pop(@output);
> chomp $line;
> $line =~ s/\s+/ /g;
> next unless ($line =~ '^20');
> ($host,$filesystem,$level,$tape,$status) = (split
/\s/,$line)[1,2,3,4,6];
> next unless ($status eq "OK");
> &PreHouseKeeping;
> &Select($tape) if Needed();
> &PostHouseKeeping;
> }
> }
>
> sub PreHouseKeeping {
> die "Unknown level ($level) found\n" unless (LevelOne() or
LevelNull());
> $lasthost = "" unless defined ($lasthost);
> ResetLevels() if (NewHost() or NewFilesystem());
> }
>
> sub LevelNull {
> if ($level eq "0") {
> $needone = 0;
> return 1;
> }
> return 0;
> }
>
> sub LevelOne {
> return 1 if ($level eq "1");
> return 0;
> }
>
> sub ResetLevels {
> $neednull = $needone = 1;
> }
>
> sub NewHost {
> return 1 if ($lasthost ne $host);
> return 0;
> }
>
> sub NewFilesystem {
> return 1 if ($lastfilesystem ne $filesystem);
> return 0;
> }
>
> sub Select {
> my $tape = "@_";
> $tapes{$tape} = 1;
> }
>
> sub Needed {
> return 1 if (LevelNull() and $neednull);
> return 1 if (LevelOne() and $needone);
> return 0;
> }
>
> sub PostHouseKeeping {
> $neednull = 0 if LevelNull();
> $needone = 0 if LevelOne();
> $lasthost = $host;
> $lastfilesystem = $filesystem;
> }
>
> sub Report {
> print "Need the following tapes:\n";
> foreach (sort keys %tapes) {
> print "$_\n";
> }
> }
>>> End of included message <<<
--
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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