> I'm using a Centos 6 system running BackupPC 3.3.0 to back up a small
> home network of mixed linux and windows PCs. I recently added a windows
> 7 (professional) box and installed cygwin 1.7.29 on it. I'm using rsync
> over an ssh tunnel to back it up. I've got password-less ssh running,
> and rsync works fine, as long as the machine stays awake. The problem
> is that windows puts itself to sleep before the backup can complete.
>
> I've got wake-on-lan working, so I can wake the machine up if it starts
> out asleep, and I can run commands on it via ssh, so I can use
> powercfg.exe to (supposedly) set power options. I have tried creating a
> power scheme on windows that disables sleeping and prevents spinning the
> disks down for long enough to do a back up. I can use powercfg to
> switch to that power scheme -- I can log in and see the power scheme has
> changed -- but windows still goes back to sleep in a few minutes.
>
> Does anybody know a way of telling windows not to sleep that will work
> if no user is logged in?
Cygwin includes nosleep, a program that tries to inhibit idle sleep,
which seems to be what you want. So you can set e.g.
$Conf{RsyncClientCmd} = '$sshPath -q -x $host /usr/bin/nosleep
--awaymode $rsyncPath $argList+';
$Conf{RsyncClientRestoreCmd} = '$sshPath -q -x $host /usr/bin/nosleep
--awaymode $rsyncPath $argList+';
which is what I do. According to the nosleep documentation, --awaymode
means that "The computer will appear to be asleep, but the command will
continue executing." I haven't tested it much, but it's worth a try.
Andrew
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