The high backuppc data volumes appear to be a problem with File::RsyncP on
the Ubuntu port to the ARM architecture. I have created a small test
script that calls File:RsyncP to copy files from one directory to another
on the same system. Running the script the first time copies all the
files (about 17MB). On Linux/Intel, subsequent runs transfer only control
information. On Linux/ARM, a large number of the blocks are flagged as
different even though the files themselves are identical. As a result,
7.5MB of the file data is transferred.
I have send the results of the test to Craig Barratt and also posted to
the ubuntu-devel-discuss mailing list.
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