Lockup problems with USB disks
djackson452 at gmail.com
Tue Nov 17 15:55:40 UTC 2009
I apologise if this was posted more than once, for some reason the
emails i sent were not reflected back to me, so i assumed they had not
gone through , i checked the archive on the web page and they were there.
For some reason some messages are not coming through on my gmail account.
David Jackson wrote:
> I have a USB hard drive. Whenever I open two programs which utilise
> the USB hard drive simultaneously, these programs, i assume when they
> attempt to write to the hard drive lock up due to what i suspect must
> be some issue with the USB driver and perhaps a deadlock involving
> multiple concurrent accesses to the drive. When they attempt to access
> the drive the programs can lock up for several minutes before being
> unblocked. When only one program is using the drive this behaviour
> does not seem to occur.
> It seems most likely that this is a USB level problem involving the
> USB drivers. I am using FreeBSD 7.1. It is annoying behaviour to say
> the least and I wonder what can be done about it, and if this issue is
> being addressed, perhaps in the recent redesign of the USB code. It
> seems to be a pretty consistent issue, happening with multiple
> installs of FreeBSD and different drives.
> Thank you.
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