responses inline...
Thanks,
Fred
On Wed, May 13, 2015 8:25 pm, Les Mikesell wrote:
> On Wed, May 13, 2015 at 7:02 PM, <fred AT damen DOT org> wrote:
>> Both computers are on the same LAN. There should be no firewalls between
>> them
>> except on the BackupPC server(linux) and client (windows).
>
> I think even the windows host firewall can have a state timeout.
On windows is this a global parameter? I do not remember seeing it when I
opened the port for rsync.
>
>> From the XferLOG
>> it appears as though this was a quite active connection. Is there a way to
>> time stamp these log messages so that the duration of an idle period can be
>> detected.
>
> If you were watching you might catch timestamps in the 'new' directory.
>
>> Does the rsync running on the client first determine all the files that are
>> to
>> be sent and then send the list back to the BackupPC server (i.e., batch) or
>> does the rsync client spew the list as it is being produced (i.e.,
>> continuous). I would suspect that it is not batch, as this would produce
>> then
>> same results in the full backup case.
>
> No, it sends an equivalent of the whole directory tree, then both
> sides walk it sending the differences. In the incremental case, it
> will skip files where the name/length/timestamp match the previous
> copy. When backuppc does a full, it adds the --ignore-times option to
> rsync, forcing it to read everything and compare block checksums.
> Normally an incremental run with few changes will complete quickly.
> Do you have a large number running concurrently?
I only ever see two or three marked as 'currently running' at a time when
looking at the host summary. This is always happening, incr fails and full
completes. How can I see this 'whole directory tree' that is sent from the
client being backed-up?, the XfreLOG starts with a list of 'got' an individual
file. I assume 'got' means uploaded to BackupPC storage.
(I hope the first sentence here is inaccurate, i.e., the rsync on the BackupPC
side should not be sending / updating files to/on the backuped client. Please
confirm.)
>
>> >From the fact that the incr backup was started immediately after the full
>> backup, I would expect to see a very small XferLOG. In which I could
>> imagine
>> there being a long time between rsync on the client finding and reporting a
>> file to be backed-up. With the size of the XferLOG (thousands of lines) I
>> find
>> it hard to imaging that there was silent period causing a timeout.
>
> Is the number realistic? Maybe you have odd timestamps/ownership or
> something that the server can't match.
If the timestamps/ownerships appear to have changed, i.e., the comparison
fails, shouldn't the incr perform the same as the full, with a few
milliseconds added in between each file check?
>
>> Note the summary page for this client says backup #11 is type full, yet the
>> XfreLOG say it is a incr.
>
> No idea about that.
>
> --
> Les Mikesell
> lesmikesell AT gmail DOT com
>
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