On Wed, 2010-05-12 at 11:17 -0400, Andy Adamson wrote: > I've seen the following intermittently while running the Connecatathon > special 'write/read 30MB file' test. It's always been with the pNFS > client, either running with the pNFS file module installed, or running > without it installed (NFSv4.1 only). But given the intermittent > behavior, that could just be because I run a lot more tests on the > pNFS kernel. > > I've seen this with 2.6.34-rc3 and up. > > Any ideas? > > -->Andy > > May 11 19:35:41 fedora-64 kernel: INFO: task bigfile:2174 blocked for > more than > 120 seconds. > May 11 19:35:41 fedora-64 kernel: "echo 0 > /proc/sys/kernel/ > hung_task_timeout_s > ecs" disables this message. > May 11 19:35:41 fedora-64 kernel: bigfile D ffff88005b10d380 > 0 2174 > 2137 0x00000084 > May 11 19:35:41 fedora-64 kernel: ffff88005ac83c28 0000000000000082 > 000000000000 > 0000 0010000000000000 > May 11 19:35:41 fedora-64 kernel: ffff88005ac83fd8 ffff8800520d0000 > 000000000001 > 3780 ffff88005ac83fd8 > May 11 19:35:41 fedora-64 kernel: 0000000000013780 0000000000013780 > 000000000001 > 3780 0000000000013780 > May 11 19:35:41 fedora-64 kernel: Call Trace: > May 11 19:35:41 fedora-64 kernel: [<ffffffff810aae7a>] ? sync_page > +0x0/0x4a > May 11 19:35:41 fedora-64 kernel: [<ffffffff813b1b26>] io_schedule > +0x3d/0x52 > May 11 19:35:41 fedora-64 kernel: [<ffffffff810aaec0>] sync_page > +0x46/0x4a > May 11 19:35:41 fedora-64 kernel: [<ffffffff813b1f61>] > __wait_on_bit_lock+0x46/0 > x8f > May 11 19:35:41 fedora-64 kernel: [<ffffffff8103cee6>] ? > release_console_sem+0x1 > bd/0x1ee > May 11 19:35:41 fedora-64 kernel: [<ffffffff810aae20>] __lock_page > +0x66/0x6d > May 11 19:35:41 fedora-64 kernel: [<ffffffff81055ad5>] ? > wake_bit_function+0x0/0 > x33 > May 11 19:35:41 fedora-64 kernel: [<ffffffff810aae63>] lock_page+0x3c/ > 0x41 > May 11 19:35:41 fedora-64 kernel: [<ffffffff810ab533>] filemap_fault > +0xc3/0x30b > May 11 19:35:41 fedora-64 kernel: [<ffffffff810c3202>] __do_fault > +0x54/0x416 > May 11 19:35:41 fedora-64 kernel: [<ffffffff810c39fa>] handle_mm_fault > +0x436/0x82b > May 11 19:35:41 fedora-64 kernel: [<ffffffff810c7f49>] ? do_mmap_pgoff > +0x290/0x2f3 > May 11 19:35:41 fedora-64 kernel: [<ffffffff813b64e8>] do_page_fault > +0x25e/0x273 > May 11 19:35:41 fedora-64 kernel: [<ffffffff813b3bb5>] page_fault > +0x25/0x30 > > The above is just an ordinary page fault. Something else is apparently holding a lock on the page and so you are waiting for it to be released. Is there a page lock leak somewhere in the pNFS client perhaps? Cheers Trond -- To unsubscribe from this list: send the line "unsubscribe linux-nfs" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
