Re: [Bug-tar] Excluding directories based on content

[Joerg Schilling]

"Dr. David Alan Gilbert" <address@hidden> wrote:

> > ftp://ftp.berlios.de/pub/star/alpha/
> > 
> > try:
> > 
> > star -c f=/tmp/some.tar -find <find expression>
>
> I can't immediately see how to do this with a find expression since I
> can't see how to test for the existance of a file within the directory
> (if the current filename passed to the find parser is the directory).
>
> Our current solution for this is to run a find on the directory searching
> for the exclusion markers (which are actually just two filenames)
> and with a little seding to cut those names off the output, generate
> an exclusion list of directories for tar (we also add a starter list
> of a few patterns to exclude core's and the like).  The problems with
> this are that firstly the extra traversal of the filesystem tree is
> slow, and secondly some of the filesystems I backup like this contain
> many hundreds (possibly thousands?)  of exclude markers, and the tar is
> running excrutiatingly slowly (in this case about 7 hours). (To be fair,
> I haven't profiled it to see if it is the matching code or not)

In order to understand why things are slow, I need to know how many files
you have to traverse, how many directories and how many excluse patterns.


Jörg

-- 
 EMail:address@hidden (home) Jörg Schilling D-13353 Berlin
       address@hidden                (uni)  
       address@hidden     (work) Blog: http://schily.blogspot.com/
 URL:  http://cdrecord.berlios.de/old/private/ ftp://ftp.berlios.de/pub/schily