Backup Central

Hello all,

i have just succesfully configured an amanda server to store the backups
on a local har disk, backup and restore are working but now im facing a
new doutb.

I have defined 7 tapes on a external usb hard-disk, when the disk is
removed how should i instruct amanda not to remove the database ?

I mean, before removing the disk should i modify the tapes status in any
way ? how?

And on the new disk i must create another 7 tapes, and label them using
correlative numbers ??

These are the actual tapes on the hard-disk, so should i start using
daily08 on the next harddisk ?

slot 7: date 20040602 label daily07
slot 1: date 20040602 label daily01
slot 2: date 20040602 label daily02
slot 3: date 20040602 label daily03
slot 4: date 20040602 label daily04
slot 5: date X label daily05
slot 6: date X label daily06


Thanks for your help
Best regards

On Wed, Jun 02, 2004 at 01:08:51PM +0200, Javier Sanchez wrote:

Hello all,

i have just succesfully configured an amanda server to store the backups
on a local har disk, backup and restore are working but now im facing a
new doutb.

I have defined 7 tapes on a external usb hard-disk, when the disk is
removed how should i instruct amanda not to remove the database ?

I mean, before removing the disk should i modify the tapes status in any
way ? how?

amandad with the no-reuse argument is, I believe, the proper choice
to tell amanda to no longer use a tape but retain the database.


And on the new disk i must create another 7 tapes, and label them using
correlative numbers ??

Yes you must create and label new tapes if you want amanda to
retain old log/index info. Otherwise amanda thinks it is reusing
an old tape and is free to overwrite the logs and indicies.

Any correlation in the names and numbers is yours alone.
Amanda doesn't care. It just takes, and later expects,
them in the order given. (Assuming they match the label string)


--
Jon H. LaBadie jon < at > jgcomp.com
JG Computing
4455 Province Line Road (609) 252-0159
Princeton, NJ 08540-4322 (609) 683-7220 (fax)

Hello again,

thanks for the informatio,n i have allready marked all the tapes to be
no-reuse with the amadmin command.

Now i have a different doubt .-), how can i tell amanda to compress the
files with bzip2 ?? I saw how once on a web but cant find it now, any
ideas ?


Cheers



El mié, 02-06-2004 a las 14:31, Jon LaBadie escribió:
On Wed, Jun 02, 2004 at 01:08:51PM +0200, Javier Sanchez wrote:

Hello all,

i have just succesfully configured an amanda server to store the backups
on a local har disk, backup and restore are working but now im facing a
new doutb.

I have defined 7 tapes on a external usb hard-disk, when the disk is
removed how should i instruct amanda not to remove the database ?

I mean, before removing the disk should i modify the tapes status in any
way ? how?

amandad with the no-reuse argument is, I believe, the proper choice
to tell amanda to no longer use a tape but retain the database.


And on the new disk i must create another 7 tapes, and label them using
correlative numbers ??

Yes you must create and label new tapes if you want amanda to
retain old log/index info. Otherwise amanda thinks it is reusing
an old tape and is free to overwrite the logs and indicies.

Any correlation in the names and numbers is yours alone.
Amanda doesn't care. It just takes, and later expects,
them in the order given. (Assuming they match the label string)

On Wed, Jun 02, 2004 at 03:51:10PM +0200, Javier Sanchez wrote:
...

Now i have a different doubt .-), how can i tell amanda to compress the
files with bzip2 ?? I saw how once on a web but cant find it now, any
ideas ?

Confirm that the options are the same as gzip (?check logs in
/tmp/amanda?) and reconfigure/recompile with configure options
pointing to the bzip2 executable rather than gzip.

Or, reconfigure/recompile with options to point to a shell script
that you write replacing gzip for amanda only. This script can
redo the gzip options into bzip2 options. This is called a shell
wrapper.

Make sure it work things work in recovery as well as dumping.

--
Jon H. LaBadie jon < at > jgcomp.com
JG Computing
4455 Province Line Road (609) 252-0159
Princeton, NJ 08540-4322 (609) 683-7220 (fax)

On Wednesday 02 June 2004 09:51, Javier Sanchez wrote:
Hello again,

thanks for the informatio,n i have allready marked all the tapes to
be no-reuse with the amadmin command.

Now i have a different doubt .-), how can i tell amanda to compress
the files with bzip2 ?? I saw how once on a web but cant find it
now, any ideas ?


Cheers

In my experience here, I've found that bzip2, while reasonably fast
and does better compression compared to gzip, but it will sneeze once
in a while and whole blocks of data have been known to come up on the
missing list, silently. I'd guess this is a less than 1% of the time
occurance though.

Like unpacking a kernel src tree from a .bz2 version of it. There has
been more than once I've had to nuke such a tree, and unpack it again
to get a good one, and there have been times I've had to go download
it again before I got a good, every character there, unpack.

Gzip has never failed, not ever as long as the turbines are turning at
the power plant.

El mié, 02-06-2004 a las 14:31, Jon LaBadie escribió:
On Wed, Jun 02, 2004 at 01:08:51PM +0200, Javier Sanchez wrote:
Hello all,

i have just succesfully configured an amanda server to store the
backups on a local har disk, backup and restore are working but
now im facing a new doutb.

I have defined 7 tapes on a external usb hard-disk, when the
disk is removed how should i instruct amanda not to remove the
database ?

I mean, before removing the disk should i modify the tapes
status in any way ? how?

amandad with the no-reuse argument is, I believe, the proper
choice to tell amanda to no longer use a tape but retain the
database.

And on the new disk i must create another 7 tapes, and label
them using correlative numbers ??

Yes you must create and label new tapes if you want amanda to
retain old log/index info. Otherwise amanda thinks it is reusing
an old tape and is free to overwrite the logs and indicies.

Any correlation in the names and numbers is yours alone.
Amanda doesn't care. It just takes, and later expects,
them in the order given. (Assuming they match the label string)

--
Cheers, Gene
"There are four boxes to be used in defense of liberty:
soap, ballot, jury, and ammo. Please use in that order."
-Ed Howdershelt (Author)
99.23% setiathome rank, not too shabby for a WV hillbilly
Yahoo.com attorneys please note, additions to this message
by Gene Heskett are:
Copyright 2004 by Maurice Eugene Heskett, all rights reserved.

Javier Sanchez wrote:

I put the no-reuse option on all the tapes using amadmin, but now all
the backups are refused because amanda expects a new tape, did i miss
something to reset ??

'no-reuse' is exaclty what amanda will do with the tapes:
she will refuse to write on them.

Amanda needs (v)tapes to backup. They must all have a different
label. You need at least [tapecycle] number of tapes in the cycle
(note the word "cycle" implies reuse). If you marked some tapes
as no-reuse, then you must add new tapes (with new labels, not
the same as you already have labelled), until you have [tapecycle]
number of reuseable tapes again.


--
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.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, :, 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 *
***********************************************************************

So let see if i understood all correctly .-)

I created 10 vtapes on a usb disk, as soon as the tapes gets full i must
put the tape in no-reuse and add another tape to the tapelist ??

How can i force amanda not to use another tape if theres free space on
the actual tape ??

Cheers
And again thanks for your help .-)




El jue, 03-06-2004 a las 11:23, Paul Bijnens escribió:
Javier Sanchez wrote:

I put the no-reuse option on all the tapes using amadmin, but now all
the backups are refused because amanda expects a new tape, did i miss
something to reset ??

'no-reuse' is exaclty what amanda will do with the tapes:
she will refuse to write on them.

Amanda needs (v)tapes to backup. They must all have a different
label. You need at least [tapecycle] number of tapes in the cycle
(note the word "cycle" implies reuse). If you marked some tapes
as no-reuse, then you must add new tapes (with new labels, not
the same as you already have labelled), until you have [tapecycle]
number of reuseable tapes again.

Javier Sanchez wrote:

I created 10 vtapes on a usb disk, as soon as the tapes gets full i must
put the tape in no-reuse and add another tape to the tapelist ??

...as soon as the tapes are WRITTEN TO...
The number of "reusable" tapes needs to be >= tapecycle parameter.
As long as this condition holds, you don't need to add tapes.
More explicit: the tapecycle parameter instructs to amanda the minimum
number of tapes to cycle through; you may have more tapes in the cycle
than the tapecycle parameter indicates.

How can i force amanda not to use another tape if theres free space on
the actual tape ??

The initial design of Amanda was intended for real tapes. Appending
to real tapes is a dangerous operation, and was _by design_ left out.
And it's difficult to add in.

But I don't see where that could be a problem for you? You can
put as many vtapes on a usbdrive as you want? Just create the directory
holding a new vtape, or did I miss something?

I forgot the initial reason why you needed "no-reuse".
(This smells like a complicated setup for an easy problem.)


--
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.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, :, 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 *
***********************************************************************