Re: Lock up's on USB transfer

[Swift Griggs <swift.griggs%coloradovnet.com@localhost>]

On Wed, 10 Sep 2008, Ephaeton%gmx.net@localhost wrote:
> I would laugh was it not for NetBSD. I'm experiencing lockups with USB 
> writing (msdos, eh?) for *several years* now already, on different 
> computers, different USB hardware, different storage.

Not to be negative, but I've also had the same experience. USB+msdos/vfat 
== crashes & fs-lockouts. ie.. Either the storage locks up or the machine 
does. I've also noticed that USB+msdos_fs is orders of magnitude slower 
than ffs/lfs/ext2 on the same unit. I know it's an ineffecient FS, but not 
200%+ slower.

> Go searching the PR database some and have some fun. You'll find many 
> "analyzed" PRs, steps on what to do, or just people asking how to debug 
> this further and being ignored.

I can _always_ reproduce the system lockup by writing files to a USB 
floppy drive formatted with FAT. The FS lockouts I can usually produce 
with a SanDisk USB 1Gb stick with FAT32. I'd be happy to help if someone 
is willing to look at the data it'd produce from ddb or whatever you want 
to see. It would be wonderful to have this fixed since so many consumer 
electronics devices use FAT.

Thanks,
  Swift
--
Swift Griggs -- <swift.griggs%coloradovnet.com@localhost>
Unix Systems Administrator