[BUG] write(2) hangs in 2.2.[13-14] (fwd)

[imel...]

	hi, rik.

	after hand patching the boobytrap, on 2.2.15pre5,
	the problem hasn't gone away.
	but it did run better, usually it goes up to 20megs
	before it dies. with 2.2.15pre5 it went 198megs and
	then froze.

	another thing, your boobytrap didn't show anything.


		imel

On Sat, 29 Jan 2000, Rik van Riel wrote:

> On Fri, 28 Jan 2000, imel... wrote:
> 
> > 	i was testing my nbd array with:
> > 	dd if=/dev/urandom of=test count=4000000
> > 
> > 	on a raid5 partition. the test hangs one of the nbd client.
> > 	the problem was on the client. doing:
> > 	#strace nbd-server 100 /dev/hda
> > 
> > 	showed that one of the machine was doing write() and it never
> > 	returns.
> > 	the hda is a 3gb disk.
> 
> With this stress-test you could have hit the problem
> window in __get_free_pages(). Could you try 2.2.15pre5
> + my boobytrap2 patch?  That one should probably work
> and if it doesn't it'll give us the error messages we
> need to track down the bug for you and make sure that
> the next kernel version will be stable.


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