Alastair D'Silva | 1 Feb 01:28 2008
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[clug] Tape backups

Hi folks,

I am currently reviewing our tape backup system, and am looking for a
system that can do the following:

1. Span multiple tapes
2. Support compression/encryption program (preferably in parallel, we
have a lot of CPU cores available)
3. Compress/encrypt on a per-file basis (minimise data loss with bad
blocks on a tape)
4. Run in a reasonable amount of time

GNU tar is out, as it can't compress multi-tape archives.

We are currently evaluating afio, but are running into trouble with
excessively long backup times.

Any suggestions regarding backup software that suits our needs?

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Jsparksaa | 1 Feb 05:40 2008

RE: [clug] Tape backups

Alastair,

  I have used Microlite BackupEdge for many years on AIX / RS-6000 & DLT tape drive.  My archives do not
currently span volumes.  Edge supports tape changers. I backup and verify 13 GB in less than an hour.  When I
upgraged a license that was more than 5 years old, it cost about $100 US and that was about 4 years ago.

  http://www.microlite.com/

Jim

"Alastair D'Silva" <alastair@...> wrote:

>Hi folks,
>
>I am currently reviewing our tape backup system, and am looking for a
>system that can do the following:
>
>1. Span multiple tapes
>2. Support compression/encryption program (preferably in parallel, we
>have a lot of CPU cores available)
>3. Compress/encrypt on a per-file basis (minimise data loss with bad
>blocks on a tape)
>4. Run in a reasonable amount of time
>
>GNU tar is out, as it can't compress multi-tape archives.
>
>We are currently evaluating afio, but are running into trouble with
>excessively long backup times.
>
>Any suggestions regarding backup software that suits our needs?
(Continue reading)

Brett Worth | 1 Feb 09:39 2008
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Re: [clug] Tape backups

Alastair D'Silva wrote:
> Any suggestions regarding backup software that suits our needs?

Bacula's been working well for me at work for a couple of years writing to an LTO2 tape
drive.  Certainly handles multi-volume backups.

The interface gets a little getting used to.  Very functional though.  If you have a
changer it will use mtx to switch tapes.

http://www.bacula.org

Brett

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Sam Couter | 1 Feb 09:43 2008
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Re: [clug] Tape backups

Alastair D'Silva <alastair@...> wrote:
> I am currently reviewing our tape backup system, and am looking for a
> system that can do the following:
> 
> 1. Span multiple tapes
> 2. Support compression/encryption program (preferably in parallel, we
> have a lot of CPU cores available)
> 3. Compress/encrypt on a per-file basis (minimise data loss with bad
> blocks on a tape)
> 4. Run in a reasonable amount of time

Amanda can do all of that (if you have a tape changer). I think. The only
bit I'm unsure about is parallel compression/encryption. Amanda can use
arbitrary compression/encryption programs, so making it compress/encrypt
on a file-by-file basis is all up to you.

I think you might be able to wrestle Bacula into doing all of that too.
It's fairly flexible.
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Gary Woodman | 1 Feb 11:48 2008
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Re: [clug] Tape backups

--- Sam Couter <sam@...> wrote:

> Alastair D'Silva <alastair@...> wrote:
> > I am currently reviewing our tape backup system, and am looking for
> a
> > system that can do the following:
> > 
> > 1. Span multiple tapes
> > 2. Support compression/encryption program (preferably in parallel,
> we
> > have a lot of CPU cores available)
> > 3. Compress/encrypt on a per-file basis (minimise data loss with
> bad
> > blocks on a tape)
> > 4. Run in a reasonable amount of time
> 
> Amanda can do all of that (if you have a tape changer). I think.

I could vote for Amanda, but I'm not sure about the
compression/encryption, we're not doing that. Performance is a bit
underwhelming too, it takes 3 weeks to back up ~10Tb (manual tape
changer, only one per day). But I suppose you're aware, performance is
a hardware problem :-P

Gary

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James Cherryh | 1 Feb 12:39 2008
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[clug] Re: S.M.A.R.T message for hd failure

I work with a guy who used to be a gyro technician for the RAAF.

One day as I was talking to him he looked at my laptop quizzically and put
his ear down next to it. He stood up again and told me that the bearings in
my laptop drive were failing and I should replace it now. Who was I to say
no? I turned it off straight away and went down to the shop to buy a
replacement drive.
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James Cherryh | 1 Feb 12:49 2008
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[clug] Vodafone and Huawei USB modem on Linux

I've subscribed to the Vodafone 3G service ($39 a month, 5 gig) in Oz.

On my dual-boot laptop it works fine on MSWindows, but I can't quite crack
the magic incantation to get it running on my OpenSuse 10.3 install where I
spend most of my time; obviously it's a pain to keep having to boot to the
Alternative Operating System to check my email.

Has anyone on the list accomplished getting this working with Linux, and can
they post what I need to do or email me  to talk me through it?

I followed applicable instructions here :
http://tlab.org/index.php?page=huawei-e220-3g-usb-data-card-with-tele2-in-ubuntu-linux
and here :
http://mybroadband.co.za/vb/showthread.php?t=21726

and it seems to dial but then disconnects straight away.

I'm not a hardware guy at the best of times....

Cheers
James
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Carlo Hamalainen | 1 Feb 13:22 2008
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Re: [clug] S.M.A.R.T message for hd failure

On Feb 1, 2008 12:42 AM, Peter Barker <pbarker@...> wrote:
> On Fri, 1 Feb 2008, steve jenkin wrote:
> > Summary:
> > As another post advised - run the Linux SMART utility to check the drive.
> > Make sure you have second, safe copies of important data.
>
> I'd make that "make sure you have at least three copies of your important
> data".

Unison has saved me quite a few times:

http://www.cis.upenn.edu/~bcpierce/unison/

Like rsync, but in both directions and it asks you about conflicts. My
web host (pair.com) run FreeBSD and the Linux binary for Unison runs
with no troubles. Really handy :)

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Gary Woodman | 2 Feb 00:24 2008
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Re: [clug] Vodafone and Huawei USB modem on Linux

--- James Cherryh <jcherryh@...> wrote:

> I've subscribed to the Vodafone 3G service ($39 a month, 5 gig) in
> Oz.

I have the "Three" branded Huawei. It works fine on PCLinuxOS (with its
2.6.18 kernel), when I use the binary from here:
http://oozie.fm.interia.pl/pro/huawei-e220/

Otherwise, post your ppp config and we'll pick it to pieces :-)

Gary

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Michael Still | 1 Feb 03:47 2008

Re: [clug] Help! Kernel panic on MythTV machine while I'm not around!

Adam Thomas wrote:
> On 29/01/2008, Michael Still <mikal@...> wrote:
>> I'm more thinking of a lackey-less solution. That way I could have two
>> machines, each KVMing each other, and fix remote problems without
>> waiting for a friend to break into my house...
> 
> Yau can do this with two serial ports on each machine and null modem
> cables between them. ttyS0 on machine one is connected to ttyS1 on
> machine two (repeat on machine two to machine one). Set the kernel
> console to ttyS0 and run minicom on ttyS1.
> 
> This scales too, to add a new machine just hook ttyS0 on machine two
> to ttyS1 on machine three and ttyS0 on machine three to ttyS1 on
> machine one. One null modem per machine and as long as one machine is
> up you can run around the loop bringing the other machines up.

This wont provide BIOS information though, unless your BIOSes are much
nicer than mine...

Mikal

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