On 07/04/2012 11:15 PM, Marc MERLIN wrote: > On Wed, Jul 04, 2012 at 01:58:31PM +0800, Liu Bo wrote: >> > The dmesg log, sysrq log and stack dump info can usually be very helpful. >> > >> > From your report, we can see the csum error and hang on log, >> > 'no csum' is not that bad while hanging-on is serious and dangerous. >> > >> > so can you please get any 'sysrq + w' log in the hanging-on case and paste >> > them here, >> > and the log may tell us who blocks other threads. > > Hi, thanks for the answer. > > I dumped all sysrq data, that was in my original Email. Here are two > different sysrq+w runs, as well as aborted transaction messages from that > Email. > Sorry that the original was a bit long and contained a bunch of sysrq output. > >>From doing further testing since then, it does seem that the code just start > doing bad things, including the file corruption I saw, when I'm running low > on free space. > > Anything else that would help? > > Thanks, > Marc >
I'd expect to get some info from the following one, but I fails. Is it reproducible on your box? thanks, liubo > > Back to 3.2.16, I'm now seeing this: > [ 840.516733] INFO: task VirtualBox:6818 blocked for more than 120 seconds. > [ 840.516735] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables > this message. > [ 840.516736] VirtualBox D ffff8801fd134080 0 6818 6758 > 0x00000080 > [ 840.516740] ffff8801fd134080 0000000000000086 0000000000000050 > ffff880202e7f100 > [ 840.516744] 0000000000013580 ffff8801c6f0dfd8 ffff8801c6f0dfd8 > ffff8801fd134080 > [ 840.516748] ffff8801c6f0da68 ffff8801c6f0da68 ffff88020a4e22f0 > ffff88023bc13e08 > [ 840.516752] Call Trace: > [ 840.516755] [<ffffffff810b5c67>] ? __lock_page+0x66/0x66 > [ 840.516758] [<ffffffff8134aea4>] ? io_schedule+0x58/0x6f > [ 840.516761] [<ffffffff810b5c6d>] ? sleep_on_page+0x6/0xa > [ 840.516764] [<ffffffff8134b1e5>] ? __wait_on_bit_lock+0x3c/0x85 > [ 840.516767] [<ffffffff810b5c62>] ? __lock_page+0x61/0x66 > [ 840.516770] [<ffffffff81060051>] ? autoremove_wake_function+0x2a/0x2a > [ 840.516785] [<ffffffffa01838d7>] ? > extent_write_cache_pages.isra.13.constprop.22+0xf6/0x278 [btrfs] > [ 840.516789] [<ffffffff810ec9cb>] ? __cache_free.isra.40+0x19/0x1a7 > [ 840.516792] [<ffffffff8134ed52>] ? sub_preempt_count+0x83/0x94 > [ 840.516795] [<ffffffff8134c2dd>] ? _raw_spin_unlock+0x24/0x30 > [ 840.516811] [<ffffffffa0183c4b>] ? extent_writepages+0x40/0x57 [btrfs] > [ 840.516826] [<ffffffffa0177f5f>] ? __btrfs_buffered_write+0x2bb/0x2dc > [btrfs] > [ 840.516841] [<ffffffffa016e88a>] ? uncompress_inline.isra.44+0x116/0x116 > [btrfs] > [ 840.516844] [<ffffffff810b6aaf>] ? __filemap_fdatawrite_range+0x4b/0x50 > [ 840.516847] [<ffffffff810b6ad9>] ? filemap_write_and_wait_range+0x25/0x4d > [ 840.516863] [<ffffffffa01782ce>] ? btrfs_file_aio_write+0x34e/0x490 > [btrfs] > [ 840.516866] [<ffffffff8103e092>] ? get_parent_ip+0x9/0x1b > [ 840.516882] [<ffffffffa0177f80>] ? __btrfs_buffered_write+0x2dc/0x2dc > [btrfs] > [ 840.516886] [<ffffffff8112f19c>] ? aio_rw_vect_retry+0x70/0x18e > [ 840.516888] [<ffffffff8112f12c>] ? aio_fsync+0x22/0x22 > [ 840.516891] [<ffffffff8112fbc7>] ? aio_run_iocb+0x72/0x11c > [ 840.516894] [<ffffffff81130d9a>] ? do_io_submit+0x6a4/0x7f9 > [ 840.516898] [<ffffffff813508d2>] ? system_call_fastpath+0x16/0x1b > [ 1187.553635] btrfs: unlinked 8 orphans > -- To unsubscribe from this list: send the line "unsubscribe linux-btrfs" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
