Hi, just saw this in the logs on a few machines, Kernel 4.3.0, Mount options:
/dev/sda /media/storage1 btrfs rw,noatime,compress=lzo,space_cache,subvolid=5,subvol=/ 0 0 [414675.258270] INFO: task java:19267 blocked for more than 120 seconds. [414675.258312] Not tainted 4.3.0-040300-generic #201511020846 [414675.258353] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [414675.258429] java D ffff88081f996980 0 19267 18965 0x00000000 [414675.258436] ffff880337d67bb8 0000000000000082 ffff88081c2f3800 ffff880019be9c00 [414675.258438] ffff880337d68000 ffff88101b7627bc ffff880019be9c00 00000000ffffffff [414675.258440] ffff88101b7627c0 ffff880337d67bd0 ffffffff817af3f3 ffff88101b7627b8 [414675.258442] Call Trace: [414675.258445] [<ffffffff817af3f3>] schedule+0x33/0x80 [414675.258450] [<ffffffff817af6ae>] schedule_preempt_disabled+0xe/0x10 [414675.258454] [<ffffffff817b0fb5>] __mutex_lock_slowpath+0x95/0x110 [414675.258458] [<ffffffff817b104f>] mutex_lock+0x1f/0x30 [414675.258470] [<ffffffffc02c3352>] btrfs_wait_ordered_roots+0x42/0x1d0 [btrfs] [414675.258480] [<ffffffffc0294c8f>] btrfs_check_data_free_space+0x1ff/0x2f0 [btrfs] [414675.258491] [<ffffffffc02bb30f>] __btrfs_buffered_write+0x13f/0x5a0 [btrfs] [414675.258495] [<ffffffff816fb001>] ? tcp_recvmsg+0x3d1/0xb70 [414675.258505] [<ffffffffc02be971>] btrfs_file_write_iter+0x171/0x560 [btrfs] [414675.258510] [<ffffffff810aeacc>] ? set_next_entity+0x9c/0xb0 [414675.258515] [<ffffffff811f13c7>] __vfs_write+0xa7/0xf0 [414675.258520] [<ffffffff811f1a16>] vfs_write+0xa6/0x1a0 [414675.258524] [<ffffffff811f2616>] SyS_write+0x46/0xa0 [414675.258528] [<ffffffff817b3036>] entry_SYSCALL_64_fastpath+0x16/0x75 [414675.258533] INFO: task java:19268 blocked for more than 120 seconds. [414675.258576] Not tainted 4.3.0-040300-generic #201511020846 [414675.258616] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [414675.258684] java D ffff88081f996980 0 19268 18965 0x00000000 [414675.258692] ffff880634f23bb8 0000000000000082 ffff88081c2f3800 ffff880019beaa00 [414675.258704] ffff880634f24000 ffff88101b7627bc ffff880019beaa00 00000000ffffffff [414675.258715] ffff88101b7627c0 ffff880634f23bd0 ffffffff817af3f3 ffff88101b7627b8 [414675.258727] Call Trace: [414675.258732] [<ffffffff817af3f3>] schedule+0x33/0x80 [414675.258736] [<ffffffff817af6ae>] schedule_preempt_disabled+0xe/0x10 [414675.258741] [<ffffffff817b0fb5>] __mutex_lock_slowpath+0x95/0x110 [414675.258745] [<ffffffff817b104f>] mutex_lock+0x1f/0x30 [414675.258756] [<ffffffffc02c3352>] btrfs_wait_ordered_roots+0x42/0x1d0 [btrfs] [414675.258764] [<ffffffffc0294c8f>] btrfs_check_data_free_space+0x1ff/0x2f0 [btrfs] [414675.258772] [<ffffffffc02bb30f>] __btrfs_buffered_write+0x13f/0x5a0 [btrfs] [414675.258774] [<ffffffff816fb001>] ? tcp_recvmsg+0x3d1/0xb70 [414675.258783] [<ffffffffc02be971>] btrfs_file_write_iter+0x171/0x560 [btrfs] [414675.258785] [<ffffffff8169561b>] ? sock_recvmsg+0x3b/0x50 [414675.258787] [<ffffffff811f13c7>] __vfs_write+0xa7/0xf0 [414675.258790] [<ffffffff811f1a16>] vfs_write+0xa6/0x1a0 [414675.258791] [<ffffffff810e65c5>] ? ktime_get_ts64+0x45/0xf0 [414675.258793] [<ffffffff811f2616>] SyS_write+0x46/0xa0 [414675.258795] [<ffffffff817b3036>] entry_SYSCALL_64_fastpath+0x16/0x75 [414675.258812] INFO: task java:19067 blocked for more than 120 seconds. [414675.258856] Not tainted 4.3.0-040300-generic #201511020846 [414675.258898] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [414675.258964] java D ffff88081f8d6980 0 19067 2602 0x00000000 [414675.258967] ffff880056957bb8 0000000000000082 ffff88081c2c6200 ffff8810188e0000 [414675.258968] ffff880056958000 ffff88101b7627bc ffff8810188e0000 00000000ffffffff [414675.258970] ffff88101b7627c0 ffff880056957bd0 ffffffff817af3f3 ffff88101b7627b8 [414675.258972] Call Trace: [414675.258975] [<ffffffff817af3f3>] schedule+0x33/0x80 [414675.258977] [<ffffffff817af6ae>] schedule_preempt_disabled+0xe/0x10 [414675.258979] [<ffffffff817b0fb5>] __mutex_lock_slowpath+0x95/0x110 [414675.258981] [<ffffffff817b104f>] mutex_lock+0x1f/0x30 [414675.258992] [<ffffffffc02c3352>] btrfs_wait_ordered_roots+0x42/0x1d0 [btrfs] [414675.259003] [<ffffffffc0294c8f>] btrfs_check_data_free_space+0x1ff/0x2f0 [btrfs] [414675.259013] [<ffffffffc02bb30f>] __btrfs_buffered_write+0x13f/0x5a0 [btrfs] [414675.259019] [<ffffffff81314dc3>] ? security_inode_need_killpriv+0x33/0x50 [414675.259029] [<ffffffffc02be971>] btrfs_file_write_iter+0x171/0x560 [btrfs] [414675.259035] [<ffffffff811f13c7>] __vfs_write+0xa7/0xf0 [414675.259040] [<ffffffff811f1a16>] vfs_write+0xa6/0x1a0 [414675.259046] [<ffffffff81063d24>] ? __do_page_fault+0x1b4/0x400 [414675.259051] [<ffffffff811f2616>] SyS_write+0x46/0xa0 [414675.259055] [<ffffffff817b3036>] entry_SYSCALL_64_fastpath+0x16/0x75 regards Martin -- 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
