BackupPC-users

Re: [BackupPC-users] how to examine progress of backup

2009-01-05 13:31:16
Subject: Re: [BackupPC-users] how to examine progress of backup
From: Les Mikesell <les AT futuresource DOT com>
To: "General list for user discussion, questions and support" <backuppc-users AT lists.sourceforge DOT net>
Date: Mon, 05 Jan 2009 12:28:44 -0600
Matthias Meyer wrote:
> I use rsyncd to backup both, windows as well as linux clients.
> Is it possible to examine or calculate the progress of an actual running
> backup?

No, gnu tar has a way to get an estimate of the size of an incremental 
run that amanda uses to help compute what will fit on a tape, but rsync 
doesn't have an equivalent.

> One Idea would be to calculate the duration of the last backups and assume
> the actual backup will have the same performance. But this can be wrong if
> some new (big) files had been added.
> Another Idea is to examine the filespace of the share and calculate the
> estimated duration based on the last transfer rates. But this can be wrong
> if some (big) files are in the exclusion list.
> 
> Any Ideas?

I don't think it is even possible to guess how much rsync will transfer 
on a changed file without running through the whole comparison.

-- 
   Les Mikesell
    lesmikesell AT gmail DOT com


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