Matthias writes:

> I believe that RsyncFileIO.pm decompress a file into <share>/RStmp and than
> compare it (rsync) with the file from the client.

Yes, but only if the file is bigger than 16MB (otherwise
it just does it in memory) and delays doing it until it
knows there is a difference in the file.

> But I don't understand why lsof sometimes list a file from cpool and
> sometimes a file from an already stored backup:
> 
> BackupPC_ 21822 backuppc    6r   REG  254,1 16968527 13049275 
> /var/lib/backuppc/cpool/5/1/1/5114e50f30d80556ce4c51cc1cdd7fa7
> BackupPC_ 21822 backuppc    9u   REG  254,1 40595312  6493166 
> /var/lib/backuppc/pc/st-srv-xp/new/fPROGRAMS/RStmp
> 
> BackupPC_ 21822 backuppc    6r   REG  254,1 188638976 60093825 
> /var/lib/backuppc/pc/st-srv-xp/288/fPROGRAMS/fmicrotech/fAusgabeverzeichnisHis.MBD
> BackupPC_ 21822 backuppc    7r   REG  254,1 190840832  6493151 
> /var/lib/backuppc/pc/st-srv-xp/new/fPROGRAMS/RStmp

I think what you are seeing is two different steps: the latter is
the file being decompressed into RStmp (although I would expect the
FD status to be 7u, not 7r; not sure why).  The second step is
probably comparing the RStmp file to a candidate file in the pool.

Craig

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