Messages in this thread | | | Date | Mon, 3 Dec 2007 07:23:28 -0800 | From | Arjan van de Ven <> | Subject | Re: [feature] automatically detect hung TASK_UNINTERRUPTIBLE tasks |
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On Mon, 3 Dec 2007 11:27:15 +0100 Andi Kleen <andi@firstfloor.org> wrote:
> > Kernel waiting 2 minutes on TASK_UNINTERRUPTIBLE is certainly > > broken. > > What should it do when the NFS server doesn't answer anymore or > when the network to the SAN RAID array located a few hundred KM away > develops some hickup? Or just the SCSI driver decides to do lengthy > error recovery -- you could argue that is broken if it takes longer > than 2 minutes, but in practice these things are hard to test > and to fix. >
the scsi layer will have the IO totally aborted within that time anyway; the retry timeout for disks is 30 seconds after all.
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