[ 2150.552017] SysRq : Show Blocked State [ 2150.552147] task PC stack pid father [ 2150.552159] btrfs-transacti D ffff88007cde1968 0 3114 2 0x00000000 [ 2150.552167] ffff880078991b70 0000000000000046 ffff880078990010 ffff88007cde1610 [ 2150.552173] 0000000000013cc0 ffff880078991fd8 ffff880078991fd8 0000000000013cc0 [ 2150.552178] 0000000000000000 ffff88007cde1610 ffff88007ca92c20 0000000000000000 [ 2150.552184] Call Trace: [ 2150.552196] [] ? leaf_space_used+0xdf/0x110 [ 2150.552205] [] ? find_get_pages_tag+0x40/0x110 [ 2150.552211] [] ? ktime_get_ts+0xb3/0xe0 [ 2150.552218] [] io_schedule+0x9a/0xf0 [ 2150.552224] [] sleep_on_page+0x9/0x10 [ 2150.552228] [] __wait_on_bit+0x5a/0x90 [ 2150.552234] [] ? __lock_page+0x70/0x70 [ 2150.552239] [] wait_on_page_bit+0x6f/0x80 [ 2150.552245] [] ? autoremove_wake_function+0x40/0x40 [ 2150.552251] [] ? pagevec_lookup_tag+0x22/0x30 [ 2150.552257] [] filemap_fdatawait_range+0xde/0x150 [ 2150.552265] [] btrfs_wait_ordered_range+0xb6/0x170 [ 2150.552271] [] btrfs_run_ordered_operations+0xc1/0x200 [ 2150.552278] [] btrfs_commit_transaction+0x2b2/0x6f0 [ 2150.552282] [] ? wake_up_bit+0x40/0x40 [ 2150.552288] [] transaction_kthread+0x24b/0x270 [ 2150.552292] [] ? btrfs_bio_wq_end_io+0x90/0x90 [ 2150.552297] [] ? btrfs_bio_wq_end_io+0x90/0x90 [ 2150.552302] [] kthread+0x96/0xb0 [ 2150.552309] [] kernel_thread_helper+0x4/0x10 [ 2150.552314] [] ? kthread_worker_fn+0x190/0x190 [ 2150.552319] [] ? gs_change+0x13/0x13 [ 2150.552328] rsync D ffff88004e25db98 0 4138 3960 0x00000000 [ 2150.552334] ffff88003fabdcf8 0000000000000086 ffff88003fabc010 ffff88004e25d840 [ 2150.552340] 0000000000013cc0 ffff88003fabdfd8 ffff88003fabdfd8 0000000000013cc0 [ 2150.552345] 0000000000000000 ffff88004e25d840 ffffffff819ab020 ffffffff00000000 [ 2150.552351] Call Trace: [ 2150.552357] [] ? acl_permission_check+0xb9/0xe0 [ 2150.552364] [] ? ns_capable+0x33/0x60 [ 2150.552369] [] ? generic_permission+0x60/0xc0 [ 2150.552374] [] ? btrfs_permission+0x21/0x70 [ 2150.552380] [] ? link_path_walk+0xb8/0xb20 [ 2150.552384] [] ? prepare_to_wait+0x59/0x90 [ 2150.552389] [] wait_current_trans+0x88/0xf0 [ 2150.552394] [] ? wake_up_bit+0x40/0x40 [ 2150.552399] [] start_transaction+0x9a/0x2a0 [ 2150.552404] [] btrfs_start_transaction+0xe/0x10 [ 2150.552409] [] __unlink_start_trans+0x45/0x440 [ 2150.552415] [] ? generic_permission+0x60/0xc0 [ 2150.552421] [] btrfs_unlink+0x2b/0x110 [ 2150.552426] [] vfs_unlink+0x8b/0x100 [ 2150.552431] [] do_unlinkat+0x1b3/0x1d0 [ 2150.552436] [] ? fput+0x1c3/0x260 [ 2150.552441] [] sys_unlink+0x11/0x20 [ 2150.552446] [] system_call_fastpath+0x16/0x1b [ 2150.552450] rsync D ffff88007646db98 0 4142 4140 0x00000000 [ 2150.552456] ffff88004b2cbbc8 0000000000000082 ffff88004b2ca010 ffff88007646d840 [ 2150.552461] 0000000000013cc0 ffff88004b2cbfd8 ffff88004b2cbfd8 0000000000013cc0 [ 2150.552467] 0000000000000000 ffff88007646d840 ffff880061c18000 ffff880000000000 [ 2150.552472] Call Trace: [ 2150.552477] [] ? read_extent_buffer+0xd9/0x1b0 [ 2150.552482] [] ? btrfs_lookup_dir_item+0xb7/0x110 [ 2150.552487] [] ? prepare_to_wait+0x59/0x90 [ 2150.552492] [] wait_current_trans+0x88/0xf0 [ 2150.552496] [] ? wake_up_bit+0x40/0x40 [ 2150.552501] [] start_transaction+0x9a/0x2a0 [ 2150.552507] [] btrfs_start_transaction+0xe/0x10 [ 2150.552512] [] btrfs_create+0x7d/0x220 [ 2150.552517] [] ? generic_permission+0x1f/0xc0 [ 2150.552522] [] vfs_create+0x99/0xd0 [ 2150.552527] [] do_last+0x8e3/0x9a0 [ 2150.552533] [] path_openat+0xc7/0x3e0 [ 2150.552539] [] ? __pte_alloc+0xd7/0xf0 [ 2150.552545] [] do_filp_open+0x43/0xa0 [ 2150.552551] [] ? kmem_cache_alloc+0x55/0x100 [ 2150.552557] [] ? alloc_fd+0x4a/0x140 [ 2150.552562] [] do_sys_open+0x152/0x1f0 [ 2150.552568] [] sys_open+0x1b/0x20 [ 2150.552572] [] system_call_fastpath+0x16/0x1b [ 2150.552576] btrfs D ffff88004e25c588 0 4177 4169 0x00000000 [ 2150.552582] ffff8800383a1c78 0000000000000082 ffff8800383a0010 ffff88004e25c230 [ 2150.552587] 0000000000013cc0 ffff8800383a1fd8 ffff8800383a1fd8 0000000000013cc0 [ 2150.552592] 0000000000000000 ffff88004e25c230 ffffffff819ab020 ffff880000000000 [ 2150.552598] Call Trace: [ 2150.552603] [] ? prepare_to_wait+0x59/0x90 [ 2150.552608] [] wait_current_trans+0x88/0xf0 [ 2150.552612] [] ? wake_up_bit+0x40/0x40 [ 2150.552617] [] start_transaction+0x9a/0x2a0 [ 2150.552622] [] btrfs_start_transaction+0xe/0x10 [ 2150.552628] [] btrfs_mksubvol+0x1fa/0x340 [ 2150.552634] [] btrfs_ioctl_snap_create_transid+0xef/0x150 [ 2150.552639] [] btrfs_ioctl_snap_create+0x5b/0x80 [ 2150.552645] [] btrfs_ioctl+0x55a/0xb80 [ 2150.552649] [] ? do_page_fault+0x24c/0x490 [ 2150.552654] [] do_vfs_ioctl+0xa0/0x520 [ 2150.552659] [] sys_ioctl+0x4a/0x80 [ 2150.552664] [] system_call_fastpath+0x16/0x1b [ 2150.552667] ls D ffff88007646c588 0 4180 3898 0x00000000 [ 2150.552673] ffff880038013e58 0000000000000082 ffff880038012010 ffff88007646c230 [ 2150.552678] 0000000000013cc0 ffff880038013fd8 ffff880038013fd8 0000000000013cc0 [ 2150.552683] 0000000000000000 ffff88007646c230 ffff88007c4c0000 0000000000000000 [ 2150.552689] Call Trace: [ 2150.552694] [] ? __pte_alloc+0xd7/0xf0 [ 2150.552699] [] ? handle_mm_fault+0x1c0/0x240 [ 2150.552705] [] __mutex_lock_killable_slowpath+0xfd/0x1d0 [ 2150.552710] [] ? filldir64+0xe0/0xe0 [ 2150.552715] [] mutex_lock_killable+0x45/0x60 [ 2150.552719] [] vfs_readdir+0x6f/0xc0 [ 2150.552723] [] sys_getdents+0x83/0xe0 [ 2150.552729] [] ? page_fault+0x25/0x30 [ 2150.552734] [] system_call_fastpath+0x16/0x1b [ 2150.552738] check_backup.pl D ffff88007fb7c588 0 7498 7497 0x00000000 [ 2150.552744] ffff88001c49be58 0000000000000082 ffff88001c49a010 ffff88007fb7c230 [ 2150.552749] 0000000000013cc0 ffff88001c49bfd8 ffff88001c49bfd8 0000000000013cc0 [ 2150.552754] 0000000000000000 ffff88007fb7c230 ffff88007fb5c230 ffffffff00000000 [ 2150.552760] Call Trace: [ 2150.552764] [] ? path_put+0x1d/0x30 [ 2150.552770] [] ? path_openat+0x105/0x3e0 [ 2150.552775] [] ? __pte_alloc+0xd7/0xf0 [ 2150.552780] [] __mutex_lock_killable_slowpath+0xfd/0x1d0 [ 2150.552785] [] ? filldir64+0xe0/0xe0 [ 2150.552790] [] mutex_lock_killable+0x45/0x60 [ 2150.552794] [] vfs_readdir+0x6f/0xc0 [ 2150.552798] [] sys_getdents+0x83/0xe0 [ 2150.552804] [] system_call_fastpath+0x16/0x1b [ 2150.552810] Sched Debug Version: v0.10, 2.6.39-rc2-hw #1 [ 2150.552814] ktime : 2150552.809953 [ 2150.552817] sched_clk : 2147279.524780 [ 2150.552821] cpu_clk : 2150552.808632 [ 2150.552824] jiffies : 4295429934 [ 2150.552827] sched_clock_stable : 0 [ 2150.552829] [ 2150.552831] sysctl_sched [ 2150.552833] .sysctl_sched_latency : 6.000000 [ 2150.552837] .sysctl_sched_min_granularity : 0.750000 [ 2150.552840] .sysctl_sched_wakeup_granularity : 1.000000 [ 2150.552843] .sysctl_sched_child_runs_first : 0 [ 2150.552846] .sysctl_sched_features : 7279 [ 2150.552849] .sysctl_sched_tunable_scaling : 1 (logaritmic) [ 2150.552853] [ 2150.552854] cpu#0, 1393.278 MHz [ 2150.552857] .nr_running : 2 [ 2150.552860] .load : 2048 [ 2150.552862] .nr_switches : 3073803 [ 2150.552865] .nr_load_updates : 300043 [ 2150.552868] .nr_uninterruptible : 6 [ 2150.552871] .next_balance : 4295.430120 [ 2150.552874] .curr->pid : 3909 [ 2150.552877] .clock : 2150552.007472 [ 2150.552880] .cpu_load[0] : 2048 [ 2150.552883] .cpu_load[1] : 1044 [ 2150.552886] .cpu_load[2] : 638 [ 2150.552888] .cpu_load[3] : 446 [ 2150.552891] .cpu_load[4] : 318 [ 2150.552894] .yld_count : 1582 [ 2150.552896] .sched_switch : 0 [ 2150.552899] .sched_count : 3179303 [ 2150.552902] .sched_goidle : 189074 [ 2150.552905] .avg_idle : 1000000 [ 2150.552908] .ttwu_count : 1918850 [ 2150.552911] .ttwu_local : 1918850 [ 2150.552914] .bkl_count : 0 [ 2150.552917] [ 2150.552918] cfs_rq[0]: [ 2150.552920] .exec_clock : 994282.725430 [ 2150.552924] .MIN_vruntime : 802324.797382 [ 2150.552927] .min_vruntime : 802327.783644 [ 2150.552931] .max_vruntime : 802324.797382 [ 2150.552934] .spread : 0.000000 [ 2150.552937] .spread0 : 0.000000 [ 2150.552940] .nr_spread_over : 1118 [ 2150.552942] .nr_running : 2 [ 2150.552945] .load : 2048 [ 2150.552948] [ 2150.552949] rt_rq[0]: [ 2150.552951] .rt_nr_running : 0 [ 2150.552954] .rt_throttled : 0 [ 2150.552957] .rt_time : 0.000000 [ 2150.552960] .rt_runtime : 950.000000 [ 2150.552963] [ 2150.552964] runnable tasks: [ 2150.552965] task PID tree-key switches prio exec-runtime sum-exec sum-sleep [ 2150.552968] ---------------------------------------------------------------------------------------------------------- [ 2150.552973] kworker/0:1 447 802324.797382 404272 120 802324.797382 4325.373022 2128708.986154 [ 2150.552986] R tcsh 3909 802325.052811 486 120 802325.052811 115.430781 2081391.782848 [ 2150.552996]