Paul Harvey | 4 Aug 06:41 2015
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Re: [clug] Rsync Diffs

On 4 August 2015 at 14:31, Brett Worth <brettw@...> wrote:
>
>
> On 04/08/15 14:25, Brett Worth wrote:
>
> If the delta between the two snapshots could be dumped then reapplied to the remote filesystem then it
would work.  Is that possible?
>
>
> I have just looked at the man page.  Now I need to do some experimenting with "send -i ".
>
> (Can someone please summarise that man page?  It's pretty long. ;-) )

Not to discourage using those commands directly - I think it's
definitely worth playing with them so you know how it all works - but
if you're a ZFS user you should definitely check out sanoid's [1]
companion script, syncoid.

Whilst I made using btrfs send/receive sound pretty easy (and to be
fair, they are), there is a learning curve i.e. new concepts to
familiarize with and perhaps a few plumbing scripts you'd write for
yourself to overcome the rawness of these utilities in some places
(but they really aren't so scary once you get to know them).

So to reiterate, check out sanoid:

[1] https://github.com/jimsalterjrs/sanoid/

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Carlo Hamalainen | 3 Aug 08:49 2015
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[clug] OT: Horrific speeds on NBN

Hi,

My parents have a new nbn connection, a 25/5 plan from TPG. Download
speeds are very different based on the site being used:

* Downloading HD video from youtube using youtube-dl: 2.2 MB/s
* Downloading a tarball from my EC2 host (US-east): 80 KB/s
* Apt-get update using au.archive.ubuntu.com: 80 KB/s
* Apt-get update using us.archive.ubuntu.com: 80 KB/s
* Wget of
http://download.skype.com/linux/skype-ubuntu-precise_4.3.0.37-1_i386.deb: 80
KB/s
* Wget of http://mirror.internode.on.net/pub/test/100meg.test: 400 KB/s

Meanwhile I can reliably upload via scp to my EC2 host at 600 KB/s.

Does TPG run some kind of transparent proxy that lets Youtube traffic
through and demotes everything else to worse-than-ADSL2 speeds?

Is this the kind of thing that the Telecommunications Industry Ombudsman
would like to hear about?

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Carlo Hamalainen
http://carlo-hamalainen.net

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Brett Worth | 3 Aug 08:56 2015
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Re: [clug] Rsync Diffs

On 03/08/15 16:26, Andrew Janke wrote:
> I'm now aware of a method to do this with just rsync.....  :)

Thanks everyone for the suggestions.  I think it's the --write-batch I need.

Brett

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Brett Worth | 3 Aug 08:03 2015
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[clug] Reply-To: Addresses.


I tried to post something to the clug list on Tuesday last week but the message got 
bounced.  This happened again today.

My emails only say brett@... in the Reply-To: field.   The From:
always says 
brett.worth@...

I'm registered on the clug  list as brett@... and this has worked
for years.

Has something changed in the way the list works?  I have just had to subscribe as 
brett.worth@... to make this work again.

For now I'm subscribed twice.

Regards
Brett

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Brett Worth | 3 Aug 07:57 2015
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[clug] Rsync Diffs

Hi All.

While we're on the topic of backups, I have a question.

Here's a hypothetical configuration:

SystemA  2 x data disks DiskA and DiskB
SystemB  1 x data disk DiskZ

These two machine start life connected to the same network and I use rsync to make DiskA, 
DiskB and DiskZ identical.

I then send SystemB to a remote place where there is no Internet access.  There is however 
a mail service.

I make changes only to DiskA during the work day and wish to have these changes 
periodically reflected on DiskZ.  Each day I can run a task that sync's DiskA to DiskB.

Is there any way I can capture the changes made to DiskB in such a way that I could put 
that information on a CD/DVD and post it to the location of SystemB so that someone could 
then apply the same changes to DiskZ?

This could be done using find/tar and some sort of timestamp system but I was wondering if 
there could be a more elegant way to do it.  Perhaps by capturing something from rsync?

Regards
Brett

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Andrew Janke | 3 Aug 04:42 2015
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Re: [clug] Cloud + rsync + backup

On 3 August 2015 at 12:39, matt andrews <matt@...> wrote:
> I'd say it's really dependent on the nature of the data (rate/volume
> of change) and obviously factors like bandwidth. I've used values of
> one month and three months before, but it just comes down to your
> situation.

Add to this my level of paranoia of having to face a recovery that
consisted of downloading the original plus 30 diffs and crossing my
fingers that it all just works... With an encrypted FS there is no
chance of a partial recovery from what I know. It's a yes or no.

I'm sure you've tested recovering one of your daily? 3 month backup
incrementals? Easy process?

a

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Andrew Janke | 3 Aug 03:39 2015
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[clug] Cloud + rsync + backup

Anyone have some wisdom to share here?  I'm looking at things like:

   https://github.com/HolgerHees/cloudsync

But it's java.... There's also this thing:

   http://www.duplicati.com/

Ideally I want a file level encrypted remote backup (to Google Drive)
with keys kept locally, connection via ADSL so it has to be
incremental. Some keep a full image and incrementals, some (like
rsync-backup) keep a current version up to date and keep diffs back to
a previous state. It doesn't seem that rsync supports encryption?

I'm curious as to how a restore happens if all you have is a key. I
take it isn't going to happen if you don't keep a backup of your key
somewhere!

If it helps I currently use dirvish for local backups and rsync the
current state of things to a geographically distant thing.

ta

a

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Tony Breeds | 31 Jul 03:29 2015

anne.a.gunn@...: Ubuntu problem]

Hi All,
    Is anyone able to help with this?

----- Forwarded message from A A Gunn <anne.a.gunn@...> -----

Date: Fri, 31 Jul 2015 11:02:22 +1000
From: A A Gunn <anne.a.gunn@...>
To: tony@...
Subject: Ubuntu problem

Dear Tony,
Found the clug online with this tablet after my pc stopped during a
download of 14.04 ubuntu.

Our usual computer shop of course claims not to know anything at all about
open source anything.

Son in Melbourne is busy preparing for exams... can you suggest where to go
for help? Needs rebooting with an external drive and disk?

Thanks for any ideas,
regards,
Anne

----- End forwarded message -----
Yours Tony.
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Paul Harvey | 30 Jul 03:10 2015
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[clug] [FOR HIRE][JOBS] I'm available for contract hire

Good morning,

My main project at work has been delayed by 6 months or so. As a result,
we're looking to make myself available for external short-term
contracts. If you happen to know of any opportunities for an experienced
Linux, Python, Perl etc. developer and trouble-shooter then feel free to
let us know!

I've worked on industrial control systems and scientific instrumentation
in oil & gas; web development, data visualization and bioinformatics at
CSIRO; also real-time web-UI and software-defined radio on ARM for the
last 18 months.

I can be found on LinkedIn at:
https://linkedin.com/in/csirac2

My GitHub account is a little boring but it's over at:
https://github.com/csirac2

Feel free to reply to this E-mail or contact Geoff.Alford@...

Cheers

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Paul Harvey

Software Engineer
Systemware-Pacific Pty Ltd
PO Box 1402 | Unit 3A Molonglo Mall, Newcastle St | Fyshwick ACT 2609

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Scott Ferguson | 28 Jul 17:55 2015
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[clug] How you know your Free or Open Source Software Project is doomed to FAIL

A list of indicators that may interest some list readers:-

http://spot.livejournal.com/308370.html?nojs=1

Some excerpts:-

== Building From Source ==
* There is no documentation on how to build from source [ +20 points of
FAIL ]
* If documentation exists on how to build from source, but it doesn't
work [ +10 points of FAIL ]
* Your source isn't configurable [ +50 points of FAIL ]
* Your source only builds with third-party proprietary build tools [ +50
points of FAIL ]
* You've written your own build tool for this code [ +100 points of FAIL ]

=== Code Oddities ===
* Your code depends on Microsoft Visual Anything [ +100 points of FAIL ]

== Documentation ==
* Your code doesn't have a changelog [+10 points of FAIL]
* Your code doesn't have any documentation [ +20 points of FAIL ]
* Your website doesn't have any documentation [ +30 points of FAIL ]

=== FAIL METER ===
0 points of FAIL: Perfect! All signs point to success!
5-25 points of FAIL: You're probably doing okay, but you could be better.
30-60 points of FAIL: Babies cry when your code is downloaded
65-90 points of FAIL: Kittens die when your code is downloaded
95-130 points of FAIL: HONK HONK. THE FAILBOAT HAS ARRIVED!
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Eyal Lebedinsky | 28 Jul 11:49 2015
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[clug] How to run a script on resume from hibernate?

I used to have my scripts run from /etc/pm/sleep.d but after upgrading f19->f22
this is not done anymore.

Is there another place now to drop startup scripts?
It is probably possible to add some systemd rules but I hope there is a simpler way.

TIA

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Gmane