Re: A unresponsive file system can hang all I/O in the system on linux-2.6.23-rc6 (dirty_thresh problem?)

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On Fri, 2007-09-28 at 02:01 -0700, Chakri n wrote:
> Thanks for explaining the adaptive logic.
> 
> > However other devices will at that moment try to maintain a limit of 0,
> > which ends up being similar to a sync mount.
> >
> > So they'll not get stuck, but they will be slow.
> >
> >
> 
> Sync should be ok, when the situation is bad like this and some one
> hijacked all the buffers.
> 
> But, I see my simple dd to write 10blocks on local disk never
> completes even after 10 minutes.
> 
> [root@h46 ~]# dd if=/dev/zero of=/tmp/x count=10
> 
> I think the process is completely stuck and is not progressing at all.
> 
> Is something going wrong in the calculations where it does not fall
> back to sync mode.

What kernel is that?

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