Re: Lockup problems with USB disks

2009-11-17 Thread David Jackson
Thank you. I took a look. I was just wondering if this was a known bug, 
is it normal, etc.


Maciej Milewski wrote:

Dnia wtorek 17 listopad 2009 o 15:18:22 David Jackson napisał(a):
  

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.

I forgot to attach a link with information about this new stack. Some you can 
find at http://ivoras.sharanet.org/freebsd/freebsd8.html


  


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Re: Lockup problems with USB disks

2009-11-17 Thread Maciej Milewski
Dnia wtorek 17 listopad 2009 o 15:18:22 David Jackson napisał(a):
> 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.
Can you try the newest FreeBSD 8-RC3? It has a new usb stack so it's worth to 
try it.

Regards,
Maciej Milewski
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Re: Lockup problems with USB disks

2009-11-17 Thread David Jackson
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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Lockup problems with USB disks

2009-11-17 Thread David Jackson


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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