Re: [BackupPC-users] BackupPC - take a day off?

[Holger Parplies]

Hi,

bpb21 wrote on 2016-05-18 10:22:22 -0700 [[BackupPC-users]  BackupPC - take a 
day off?]:
> [someone else wrote:]
> > Maybe it's possible to create a blackout period for that day? Not sure if
> > one should specify saturday or sunday as weekdays. 
> > [...]
> 
> Thanks!  I think this is it.  I completely overlooked this for all the
> other settings.  Sounds promising.

well, yes, that is the solution that comes to mind. I'm not sure the problem
you are solving is the important one, though.

What exactly are you trying to scan for viruses, your backups or the rest
of the system?

Assuming you are scanning the backups:
Does your anti-virus software handle compression (i.e. the non-standard
format used by BackupPC)? If not, then your anti-virus software will run
just fine, consume lots of CPU time and keep your hard disks busy, but it
will be pretty much guaranteed to never find anything (which might be what
you are actually hoping for, but it would also be very much meaningless).
If it does work, remember that you want to scan only the pool, not the pc/
directory structure. Since BackupPC conveniently only stores the data once,
you only need to scan it once.

Assuming you are *not* scanning the backups:
Be sure to exclude the backups from the AV scan - it would take forever
and probably be quite pointless.

As a side note, the nightly job you seem to be referring to -
BackupPC_nightly - is not "pooling and compression", it's more like
"housekeeping and statistics". Compression is done during backups.
Pooling is done during backups for existing files (i.e. where an
identical file is known to BackupPC) and during BackupPC_link for
new files.

Hope that helps.

Regards,
Holger

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[BackupPC-users] BackupPC - take a day off?

[bpb21]

Maybe it's possible to create a blackout period for that day? Not sure if one 
should specify saturday or sunday as weekdays. 

$Conf{BlackoutPeriods} 
= [ 
{ 
hourBegin => 1.0, 
hourEnd => 23.5, 
weekDays => [0], 
}, 
]; 


Kind regards 
Pasi 


Thanks!  I think this is it.  I completely overlooked this for all the other 
settings.  Sounds promising.

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Re: [BackupPC-users] BackupPC - take a day off?

[Pasi Koivisto]

> On 18 May 2016, at 14:28, bpb21  wrote:
> 
> And I may have just answered my own question; tell it to take the morning 
> off, or start the virus scan after pooling and compression, which usually 
> ends by 1 or 1:10 a.m.
> 
> But, if anyone knows how to have BackupPC systems take Sunday as a rest day 
> while the scanner scans, that would be good.

Maybe it's possible to create a blackout period for that day? Not sure if one 
should specify saturday or sunday as weekdays.

$Conf{BlackoutPeriods}
= [
{
hourBegin =>  1.0,
hourEnd   => 23.5,
weekDays  => [0],
},
];


Kind regards
Pasi


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[BackupPC-users] BackupPC - take a day off?

[bpb21]

And I may have just answered my own question; tell it to take the morning off, 
or start the virus scan after pooling and compression, which usually ends by 1 
or 1:10 a.m.

But, if anyone knows how to have BackupPC systems take Sunday as a rest day 
while the scanner scans, that would be good.

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[BackupPC-users] BackupPC - take a day off?

[bpb21]

I've got BackupPC running on a somewhat low spec server, but it's running fine 
for the 60 or so PCs we've got in use.  In fact, it's saved the day on numerous 
occasions.  The system specs are just good enough to fully support all the 
usual BackupPC functions.

Issue: I want to use ClamAV to scan for viruses.

Problem: The server/hdds just aren't fast enough to complete the scan before 
the next wave of backups starts, even if I block off several hours (10 pm - 7 
am) to do the virus scan.  BackupPC's pooling and compression, which works 
fine, taxes the server too much with the virus scan running and that kicks in 
around midnight or so regardless.

I had started a virus scan overnight and it's still trying to run this morning. 
 Pooling and compression is also still trying to run as well, whereas 
pooling/compression would usually be done by 1 a.m. or so without the virus 
scan running.

Question: Is there a way to tell BackupPC to take the day off?  That way I 
could run ClamAV without BackupPC doing backups, pooling, or compression, at 
the same time and complete the virus scan without interfering with the normal 
BackupPC functions.

I see where you can easily tell it what hours of the day to wake up, but is 
there an option where you can tell BackupPC what day(s) of the week to wake up 
on?  I'd like to take Sunday, for example, for BackupPC to cease its usual 
functions (including pooling/compression) while I run a scan via crontab/script.

Otherwise standard, out of the box configuration for BackupPC - nothing fancy 
going on, and about 60 client PCs.

Any ideas?

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