On Mon, 3 Dec 2007 11:27:15 +0100..
Andi Kleen <andi@xxxxxxxxxxxxxx> wrote:
Kernel waiting 2 minutes on TASK_UNINTERRUPTIBLE is certainlyWhat 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
broken.
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.