USB Problems with HDD on Freebsd 8

[Momchil Ivanov]

At Wed, 06 Jun 2012 23:43:50 +0200,
Momchil Ivanov wrote:
> 
> At Wed, 6 Jun 2012 21:38:48 +0200,
> Marc Fonvieille wrote:
> > 
> > On Wed, Jun 06, 2012 at 07:30:37PM +0200, Momchil Ivanov wrote:
> > > 
> > > It's self powered, I will try USB reset if it happens with other data,
> > > for the time being I am manually rsync-ing sub directories. The thing
> > > is that it's reproducible if I try to rsync a certain folder. I will
> > > check if I can pin it down to a certain file. Would be a pitty if it's
> > > a firmware bug since I spent some money on the device.
> > >
> > 
> > Could you try your rsync with the --bwlimit=1000 option?
> > 
> > -- 
> > Marc
> 
> I will try that on the complete directory structure once I work my
> self through manually selecting directories by letters. I get
> approxiately 11.5 MBps on all directories that I've copied so far,
> therefore I don't think that it's a bandwidth issue.
> 
> The HDD died when I issued rsync over a parent folder and rsync cried
> amost immediately, so it probably has to do with the IO when creating
> the list of files that need to be synchronized, i.e. path names + geli
> + bad firmware or a file that was on the list first + geli + bad
> firmware. So if I am really lucky I will get the combination of geli +
> file/directory that crashes the firmware of the USB HDD :)
> 
> Or maybe my USB hub just doesn't like this HDD, note that I've tried
> to plug the cable of the HDD also directly into my laptop, when the
> problem appeared, but there was no effect, so most probably it's the
> HDD.
> 
> I will let you know if I find something interesting or cry if
> something breaks again :) btw it's a Hitachi Touro Desk 2TB with USB
> 2.0.
> 
> Regards,
> Momchil

or maybe you are right, since the 11 MBps I get is while copying from
an old PC that has only 100 Mbit/ps network card, and I have a better
local bandwidth via the USB when rsync builds the directory
list... might be