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Hans Petter Selasky
Possible solution for USB EHCI IRQ problems
Hi, Anyone out there experiencing so-called EHCI-hangs, can try applying the following patch by hand: http://p4web.freebsd.org/@@184749?ac=10 ==== //depot/projects/usb/src/sys/dev/usb/controller/ehci.c#62 (text+ko) ==== @@ -1589,6 +1589,10 @@ usb_callout_reset(&sc->sc_tmo_pcd, hz, (void *)&ehci_pcd_enable, sc); } + /* if there was a doorbell, clear the doorbell busy flag */ + if (status & EHCI_STS_IAA) + ...
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Oct 14, 3:54 pm 2010
Andriy Gapon
Re: Locked up nfsd after avg@ sendfile patch
So, after some more investigation, it looks like this zio is genuinely stuck, because its bio is stuck in geom because its ccb/command is stuck in arcmsr. Looks like the driver (controller/firmware) isn't processing any more requests. Perhaps a hardware issue, but I reckon that the driver should have detected the situation, timed out the commands and reset the hardware (if needed). Anyway, it looks that this is not related to ZFS[*]. Maybe firmware and BIOS should be updated, maybe hardware ...
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Oct 14, 10:20 am 2010
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