Am Samstag 31 Oktober 2009 schrieb Andrew Morton: > (switched to email. Please respond via emailed reply-to-all, not via > the bugzilla web interface). > > On Sat, 31 Oct 2009 06:59:07 GMT bugzilla-daemon@xxxxxxxxxxxxxxxxxxx wrote: > > http://bugzilla.kernel.org/show_bug.cgi?id=14518 > > > > Summary: I/O appears to get stuck on certain rsync backup > > job and system clock halts then > > Product: IO/Storage > > Version: 2.5 > > Kernel Version: 2.6.31.5 > > Platform: All > > OS/Version: Linux > > Tree: Mainline > > Status: NEW > > Severity: normal > > Priority: P1 > > Component: Block Layer > > AssignedTo: axboe@xxxxxxxxx > > ReportedBy: Martin@xxxxxxxxxxxx > > Regression: Yes > > > > > > I sorted this to generic block problems, might be an issue with the > > sata_sil driver tough. > > Yup, it looks more like an ata issue. > > Or it might be that the errors are due to real hardware problems and > triggered not-well-tested code paths in block/scsi/VFS/etc. > > Could someone take a look please? I think I better add one information about a special tuning I applied to CFS. CC'ing Ingo Molnar for feedback on that one: shambhala:~> tail -2 /etc/sysfs.conf # Scheduler-Tuning kernel/debug/sched_features = NO_NEW_FAIR_SLEEPERS I am not sure whether this could interfere with the workload I described. I believed I had some more settings in /etc/sysfs.conf, but apparently to due an editing error on this one has been left. The idea for is that coming from a scheduler tuning thread that originated from the initial Brain Fuck Scheduler posting by Con Koliva. AFAIK NO_NEW_FAIR_SLEEPERS is disabled on current 2.6.32-rc kernels as well. Ingo might that be a contribution to the issues seen here? Ciao, -- Martin 'Helios' Steigerwald - http://www.Lichtvoll.de GPG: 03B0 0D6C 0040 0710 4AFA B82F 991B EAAC A599 84C7
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