[vox-tech] vox-tech Digest, Vol 57, Issue 16

[Brian Yates]

Gentleman,

Do any of you write code for video games at an advanced level or know
someone who does. I have what is a unique idea for a video game that I would
like to propose.

Let me know.

Brian Yates 
Learned1once at calweb.com 
(916) 536-0509 




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Subject: vox-tech Digest, Vol 57, Issue 16

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Today's Topics:

   1. Re: Help with USB Hard drive (Scott Miller)
   2. Re: Help with USB Hard drive (Bill Broadley)
   3. Re: Help with USB Hard drive (chris)
   4. Re: Help with USB Hard drive (Bill Broadley)


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Message: 1
Date: Fri, 20 Feb 2009 12:03:50 -0800
From: Scott Miller <scottlinux at gmail.com>
Subject: Re: [vox-tech] Help with USB Hard drive
To: "lugod's technical discussion forum" <vox-tech at lists.lugod.org>
Message-ID:
	<a659a5260902201203v1f6ca2b5q5fcea4d09c2bf10d at mail.gmail.com>
Content-Type: text/plain; charset=ISO-8859-1

Hey yeah FAT32 is not journaling either, so if there is every a power
blip or cut of connection there is zero recovery from the file system
(if that is a concern).

This wikipedia page is one of my favorites, btw:

http://en.wikipedia.org/wiki/Comparison_of_file_systems


On Fri, Feb 20, 2009 at 11:01, ALLO (Alfredo Lopez De Leon)
<ALLO at novozymes.com> wrote:
> Hi ken and Matthew,
>
> Awesome info!  I'll give it a try :-)
>
> Ken: does this answer your question?
>
> Disk /dev/sdf: 1000.2 GB, 1000204886016 bytes
> 255 heads, 63 sectors/track, 121601 cylinders
> Units = cylinders of 16065 * 512 = 8225280 bytes
>
>   Device Boot      Start         End      Blocks   Id  System
> /dev/sdf1               1      121601   976760001    b  W95 FAT32
>
> By the way I decided to use FAT32 so I can move the drive between several
machines. But.., I may decide to get another one ($150.00 at Fry's final
price) and do the "/dev/disk/by-id/xxxx" but with an ext3 partition which
will be much more efficient.
>
> Thanks!!!
> Alfredo
>
> -----Original Message-----
> From: vox-tech-bounces at lists.lugod.org
[mailto:vox-tech-bounces at lists.lugod.org] On Behalf Of Chanoch (Ken) Bloom
> Sent: Friday, February 20, 2009 10:03 AM
> To: lugod's technical discussion forum
> Subject: Re: [vox-tech] Help with USB Hard drive
>
>
> That's an assumption the operating system makes because most USB drives
are thumb drives and the like, single-user disks that come and go. You can
change that, though.
>
> Create a rule to identify the device uniquely in udev and to assign it a
permenant device node (I can't tell you exactly how to do this, it will
depend on being able to find something like a serial number that udev can
use to identify it.), then add that device node to /etc/fstab, with
appropriate mount options.
>
> Just out of curiousity, what's the block size (the size occupied by a 1
byte file) on a 1 TB fat32 drive?
>
> --Ken
>
> --
> Ken (Chanoch) Bloom. PhD candidate. Linguistic Cognition Laboratory.
> Department of Computer Science. Illinois Institute of Technology.
> http://www.iit.edu/~kbloom1/
> _______________________________________________
> vox-tech mailing list
> vox-tech at lists.lugod.org
> http://lists.lugod.org/mailman/listinfo/vox-tech
>


------------------------------

Message: 2
Date: Fri, 20 Feb 2009 17:53:09 -0800
From: Bill Broadley <bill at cse.ucdavis.edu>
Subject: Re: [vox-tech] Help with USB Hard drive
To: lugod's technical discussion forum <vox-tech at lists.lugod.org>
Message-ID: <499F5E85.6020806 at cse.ucdavis.edu>
Content-Type: text/plain; charset=ISO-8859-1

Scott Miller wrote:
> Hey yeah FAT32 is not journaling either, so if there is every a power
> blip or cut of connection there is zero recovery from the file system
> (if that is a concern).

Er, there is recovery, it's called, er, umm, chkdsk or something?  I think
there's a fsck.vfat as well.

Speaking of which another of my pet peeves/rants.  Journals rely on
perfectly
reliable hardware, drivers, cables, and software.  Unfortunately the real
world isn't so kind.  So the reality is that the periodic fsck gives a much
stronger statement of a file systems integrity than a simple journal unroll.

Based on my experience the quality of the file system and hardware is hugely
more important than the existence or lack of journaling.  In fact if
anything
I've seen more issues with xfs and reiser than I have with ext2 or ext3
(percentage wise, not in absolute terms).

I'm not against journals and run ext3 most commonly, but journals are mostly
about quick boot/mount times, not safer, and actually they tend to less
safe.


------------------------------

Message: 3
Date: Fri, 20 Feb 2009 19:03:01 -0800
From: chris <teknopup at gmail.com>
Subject: Re: [vox-tech] Help with USB Hard drive
To: lugod's technical discussion forum <vox-tech at lists.lugod.org>
Message-ID: <1235185381.7401.7.camel at chris-hpdv5k>
Content-Type: text/plain

On Fri, 2009-02-20 at 17:53 -0800, Bill Broadley wrote:

> Er, there is recovery, it's called, er, umm, chkdsk or something?u are I
think
> there's a fsck.vfat as well.

   chkdsk is only good for saving readable text, if it is .exe you want
back then you are mostly screwed. journal roll back will only lose that
data recently added, instead of the entire fs. So basicly, save oven and
make plenty copies.





-- 
chris <teknopup at gmail.com>
http://digitalatoll.flnet.org/


------------------------------

Message: 4
Date: Fri, 20 Feb 2009 19:26:26 -0800
From: Bill Broadley <bill at cse.ucdavis.edu>
Subject: Re: [vox-tech] Help with USB Hard drive
To: teknopup at gmail.com, 	lugod's technical discussion forum
	<vox-tech at lists.lugod.org>
Message-ID: <499F7462.1080602 at cse.ucdavis.edu>
Content-Type: text/plain; charset=ISO-8859-1

chris wrote:
> On Fri, 2009-02-20 at 17:53 -0800, Bill Broadley wrote:
> 
>> Er, there is recovery, it's called, er, umm, chkdsk or something?u are I
think
>> there's a fsck.vfat as well.
> 
>    chkdsk is only good for saving readable text, if it is .exe you want
> back then you are mostly screwed. 

Really, I don't recall such restrictions, but it's been a very long time so
I'll just blame my memory.  fsck.vfat mentions fixing quite a few things.

> journal roll back will only lose that
> data recently added, instead of the entire fs.

As mentioned, that's the theory, if everything is perfect.  Alas the real
world means that block numbers, contents, messages, drivers, etc during an
issue (like a power supply failure, brownout) or even just a driver bug.  It
could even be something as subtle as a vibration.

> So basicly, save oven and
> make plenty copies.

Sure, rsync, backups, version control etc.  The way I do things like this
is:
* Email keep it on server, backup the server (backuppc in my cse)
* source code remote subversion server (again backed up by backuppc)
* Important non-source code related files rsync

The rest... when it dies I consider it house cleaning.
> 
> 
> 
> 
> 


------------------------------

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