Doesn't rsync calculate checksums even if you set --whole-file? It doesn't
calculate block checksums but it still calculates file checksums - and if
they match it skips the file (which only happens if you set --checksum-seed
because otherwise it uses the current time as checksum-seed)
On Sat, Sep 28, 2013 at 1:56 PM, Chris Adamson <chris.adam...@mcri.edu.au>wrote:
> Les,
>
> The only difference I can see is that, as you point out, --one-file-system
> is purely handled by the sender and doesn't need to be "supported" as such
> by the receiver. I haven't as yet figured out how to get rsyncd to print
> out the final set of options it is using when backuppc establishes a
> connection to it so I don't know whether whole-file is being used directly.
> However, the full backups are CPU bound for both the rsync and
> BackupPC_dump processes and if I do a iftop to look at the traffic on the
> loopback network connection there is hardly anything being transferred over
> it. This suggests that only checksums are being transferred over the
> connection rather than the data itself. I will look into getting rsyncd to
> print out more verbose log files so that I can see if it is indeed using
> the delta xfer algorithm even though I specify --whole-file.
>
> -----Original Message-----
> From: Les Mikesell [mailto:lesmikes...@gmail.com]
> Sent: Thursday, 26 September 2013 2:01 PM
> To: General list for user discussion, questions and support
> Subject: Re: [BackupPC-users] RsyncP and --whole-file
>
> On Tue, Sep 24, 2013 at 6:58 PM, Chris Adamson <chris.adam...@mcri.edu.au>
> wrote:
> > This is /usr/lib/perl5/File/RsyncP.pm
> >
> > 115 #
> > 116 # Since the exclude arguments are no longer needed (they are
> > 117 # passed via the socket, not the command-line args), update
> > 118 # $rs->{rsyncOpts}
> > 119 #
> > 120 @{$rs->{rsyncArgs}} = @ARGV;
> > 121
> > 122 #
> > 123 # Now process the rest of the arguments we care about
> > 124 #
> > 125 return if ( !$p->getoptions($rs->{rsyncOpts},
> > 126 "block-size=i",
> > 127 "devices|D",
> > 128 "from0|0",
> > 129 "group|g",
> > 130 "hard-links|H",
> > 131 "ignore-times|I",
> > 132 "links|l",
> > 133 "numeric-ids",
> > 134 "owner|o",
> > 135 "perms|p",
> > 136 "protocol=i",
> > 137 "recursive|r",
> > 138 "relative|R",
> > 139 "timeout",
> > 140 "verbose|v+",
> > 141 ) );
> >
> > Note that whole-file is not included in the list of options that it
> looks for, so it is ignored by RsyncP. This is 0.68 but it is the same deal
> in 0.70.
> >
>
> I don't see --one-file-system in that list either, but I know it is
> honored because I use it everywhere. This must be the list that is
> processed on the receiving side. Wouldn't whole-file be passed to the
> sender and handled there?
>
> --
> Les Mikesell
> lesmikes...@gmail.com
>
>
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