On Fri, Sep 05, 2003 at 09:47:26AM +0200, Paul Bijnens wrote:
> rwk AT americom DOT com wrote:
>
> >>The basic way is to use gnutar as the backup program and NOT back up
> >>the entire FS, but create a series of disklist entries which back up
> >>a sub-tree of the total system. For example if your big FS mounts as
> >>/big_mama, and has subdirs of /big_mama/proj1, /big_mama/proj2, ...
> >>you could specifiy a separate DLE for each "projx" directory tree.
> >
> >
> >It's videos and they are 1G to 5G each all in one directory. The
> >program which creates them (mythtv) gives them files names which are
> >numbers, so they are not as easy to divide into categories like you
> >suggest, but I'm sure there is a way.
>
In fact it would be possible to do your 'includes' like a hash table.
It becomes a lot of DLE's, and incrementals would be silly since they
are individual files.
Using Paul's examples below it would be some thing like:
fatboy /bigmama_00 /bigmama {
nocomp-user-tar
include "./00*"
}
fatboy /bigmama_01 /bigmama {
nocomp-user-tar
include "./01*"
}
For 100 total DLE's to 'include "./99*"'.
Or if 50 DLE's would be more desireable:
fatboy /bigmama_1 /bigmama {
nocomp-user-tar
include "./0[01]*"
}
fatboy /bigmama_2 /bigmama {
nocomp-user-tar
include "./0[23]*"
}
until you get to 'include "./9[89]"'.
And maybe a catchall extra one with 'include "./[!0-9]*"'
or 'exclude "./[0-9]"'.
Those are cumbersome, but with a good editor (vi comes to mind :)
it should be 3 minutes work.
> There is a possible approach using GNUTAR and the "include" directive
> together with explicit diskname + diskdevice in your disklist.
>
> Your disklist would look like:
>
> fatboy /bigmama_BIGDIR /bigmama { # a big subdirectory
> comp-user-tar
> include "./bigdir"
> }
> fatboy /bigmama_FILES01 /bigmama { # all files beginning with...
> nocomp-user-tar
> include "./file[01]*"
> }
> fatboy /bigmama_FILES23 /bigmama {
> nocomp-user-tar
> include "./file[23]*"
> }
> ...
> fatboy /bigmama_REST /bigmama { # Catch-all
> nocomp-user-tar
> exclude "./file[0-9]*"
> exclude append "./bigdir"
> }
>
> The disknames e.g. /bigmama_FILES23 are just labels and need to be uniq.
> The trick here lies in finding the patterns that divide the filesystem
> in chunks that fit on one tape. (I wonder what happens if the "include"
> pattern matches no files. Hopefully it just backup up a zero size
> directory.) Also notice the last catchall to backup everything you
> did not specify in the previous includes.
>
> You would probably also increase the "maxdumps" parameter, assuming
> your machine is fast enough.
>
> Not very elegant, but while waiting when someone finally manages to
> adapt amanda to span tapes...
>
>
> --
> 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 *
> ***********************************************************************
>
>
>
>>> End of included message <<<
--
Jon H. LaBadie jon AT jgcomp DOT com
JG Computing
4455 Province Line Road (609) 252-0159
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