Re: More problems with using apt-get

[Chris Larson <kergoth@handhelds.org>]

* trixter http://www.0xdecafbad.com (trixter@0xdecafbad.com) wrote:
> On Tue, 2004-12-21 at 23:39 +0100, Jan-Oliver Wagner wrote:
> 
> > > The SL-5x00 models had a fairly unreliable SD driver which made the
> > > problem worse, but I haven't had disk IO related crashes on my SL-C750
> > > using a Panasonic SD card.
> > 
> > I am using a Lexar 32x 1GB. Whatever that means.
> > 
> it means that you copied me!  32x means 4.8M/sec minimum speed.  now if
> you are lucky like me and your drivers only do 1 bit mode (MMC legacy)
> then its slow!  but if you can do 4 bit mode its much faster.  
> 
> The drivers that are open (I didnt clarify this earlier) are for non
> SDIO non secure (ie use it like an mmc card, alledgly faster) the binary
> only from sharp I believe does a lot more but not having a zaurus ...

Sharp's driver does not do SDIO .. technically the SL5500/5000d hardware
doesn't support it either.  The PXA models have the hardware that's
capable of it, but sharp's drivers still don't do it.  And they do not
support the secure features.

> > > You may want to try running "while true; do sync; sleep 1; done &" in the
> > > background which had apparently improved things for some people.
> 
> wouldnt a mount option be better, albiet slower, like -o sync ?  Does it
> provide the same solution?  Does anyone know?

Yep, that'd ensure that writes to the card block until completion.
That's often a good idea with removable media.  In fact, debian's
"pmount" tool for mounting hotpluggable devices (as a user, no fstab
entry, must be on 2.6 as it requires sysfs) mounts the devices sync by
default.
--
Chris Larson - kergoth at handhelds dot org
Linux Software Systems Engineer - clarson at ti dot com
OpenZaurus Project Maintainer - http://openzaurus.org/