BackupPC-users

Re: [BackupPC-users] Display inconsistent for total/existing/new files.

2017-05-07 04:18:30
Subject: Re: [BackupPC-users] Display inconsistent for total/existing/new files.
From: Craig Barratt <cbarratt AT users.sourceforge DOT net>
To: "dieter.fauth AT web DOT de" <dieter.fauth AT web DOT de>, "General list for user discussion, questions and support" <backuppc-users AT lists.sourceforge DOT net>
Date: Sun, 7 May 2017 01:18:04 -0700
Dieter,

V4 rsync, by default, uses --checksum for full backups, which means the full-file digest of the existing file is sent to the client together with the meta data, and the client checks if the digest and meta data are the same.  If so, then no file is transferred (it's skipped just like in an incremental).  So those files count towards the total file count, but not the Existing Files count.  If the meta data has changed, or the full-file checksum is different, then the rsync algorithm is applied, transferring the deltas.  In that case the file counts towards either the Existing or New count.

That's different to V3, the first step is skipped, and a full uses the rsync algorithm to transfer (send deltas) for every file, so it always counts towards either Existing or New.

Alexander recently reported some bugs with file statistics (the restore one is definitely a bug), and I need to look into those.  

Craig

On Thursday, May 4, 2017, Dieter Fauth <dieter.fauth AT web DOT de> wrote:
Hi,
looks like the "existent files" column is way to low in values.

Example:
2002 was an V3 backup, 2019 is a V4 backup:
Backup# Type    #Files  Size/MiB        MiB/sec #Files  Size/MiB        #Files  Size/MiB
2002    full    1736013 94516.1 8.72    1736008 94491.9 1778    26.1
2019    full    2110267 111675.9        39.67   22      334.6   154     100.9

I am the only one seeing this?

--
Many regards, Dieter Fauth :-)

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