Arjan van de Ven wrote:
On Mon, 3 Dec 2007 11:27:15 +0100
Andi Kleen <[EMAIL PROTECTED]> 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.
..
Mmm.. but the SCSI layer may do many retries, each with 30sec timeouts..
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