Over the weekend, I started doing some maintenance on my server: I upgraded to 4.7.0, and I started deleting a device from my array, preparatory to putting in a larger one. About halfway through the operation, several kernel threads hung up for a while (resulting in "blocked for 120s" messages), and then the delete process seems to have stopped entirely, although several kernel threads are at maximum usage. After a few hours, I rebooted the machine, and left it for a day or so. I tried the delete again this afternoon, and it's done the same thing again. The full log is included below. I have a kworker and a btrfs-transaction pegged at close to 100% of a core each, and a btrfs-cleaner (and the btrfs dev del process) in D state. The FS was not under load at the time of the failure, and it passes scrub. I haven't tried a btrfs check yet. Hugo. Aug 9 15:36:17 s_src@amelia kernel: BTRFS info (device sda2): found 6 extents Aug 9 15:36:20 s_src@amelia kernel: BTRFS info (device sda2): relocating block group 33406415011840 flags 17 Aug 9 15:36:36 s_src@amelia kernel: BTRFS info (device sda2): found 6 extents Aug 9 15:36:54 s_src@amelia kernel: BTRFS info (device sda2): found 6 extents Aug 9 15:36:57 s_src@amelia kernel: BTRFS info (device sda2): relocating block group 31066731577344 flags 17 Aug 9 15:37:18 s_src@amelia kernel: BTRFS info (device sda2): found 1188 extents Aug 9 15:43:56 s_src@amelia kernel: INFO: task btrfs-cleaner:2102 blocked for more than 120 seconds. Aug 9 15:43:56 s_src@amelia kernel: Not tainted 4.7.0-dirty #153 Aug 9 15:43:56 s_src@amelia kernel: "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. Aug 9 15:43:56 s_src@amelia kernel: btrfs-cleaner D ffff88021fc95f40 0 2102 2 0x00000000 Aug 9 15:43:56 s_src@amelia kernel: ffff8800d9223700 0000000000000005 ffff88021fc0c850 ffff880210954000 Aug 9 15:43:56 s_src@amelia kernel: ffff880210953e10 ffff8800d9223700 ffff88021691d018 ffff88021691d014 Aug 9 15:43:56 s_src@amelia kernel: 00000000ffffffff ffffffff8141d06a ffff88021691d010 ffffffff8141d209 Aug 9 15:43:56 s_src@amelia kernel: Call Trace: Aug 9 15:43:56 s_src@amelia kernel: [<ffffffff8141d06a>] ? schedule+0x78/0x85 Aug 9 15:43:56 s_src@amelia kernel: [<ffffffff8141d209>] ? schedule_preempt_disabled+0x5/0x6 Aug 9 15:43:56 s_src@amelia kernel: [<ffffffff8141e041>] ? __mutex_lock_slowpath+0xa9/0x116 Aug 9 15:43:56 s_src@amelia kernel: [<ffffffff8141e0bc>] ? mutex_lock+0xe/0x1d Aug 9 15:43:56 s_src@amelia kernel: [<ffffffff8141e0bc>] ? mutex_lock+0xe/0x1d Aug 9 15:43:56 s_src@amelia kernel: [<ffffffff81178ecf>] ? btrfs_delete_unused_bgs+0xb5/0x346 Aug 9 15:43:56 s_src@amelia kernel: [<ffffffff8117f6a5>] ? cleaner_kthread+0xf2/0x1a8 Aug 9 15:43:56 s_src@amelia kernel: [<ffffffff8117f5b3>] ? btree_invalidatepage+0x85/0x85 Aug 9 15:43:56 s_src@amelia kernel: [<ffffffff81057ba0>] ? kthread+0x95/0x9d Aug 9 15:43:56 s_src@amelia kernel: [<ffffffff8141f2ff>] ? ret_from_fork+0x1f/0x40 Aug 9 15:43:56 s_src@amelia kernel: [<ffffffff81057b0b>] ? init_completion+0x1d/0x1d Aug 9 15:43:56 s_src@amelia kernel: INFO: task btrfs:27655 blocked for more than 120 seconds. Aug 9 15:43:56 s_src@amelia kernel: Not tainted 4.7.0-dirty #153 Aug 9 15:43:56 s_src@amelia kernel: "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. Aug 9 15:43:56 s_src@amelia kernel: btrfs D ffff88021fc15f40 0 27655 27647 0x00000000 Aug 9 15:43:56 s_src@amelia kernel: ffff8800d9988b00 ffff88016e7a7ae0 ffff88021fc95fa8 ffff88016e7a8000 Aug 9 15:43:56 s_src@amelia kernel: ffff88016e7a7b10 ffff8800d9988b00 0000000000000002 ffffffff8141e80a Aug 9 15:43:56 s_src@amelia kernel: ffff8800d9988b00 ffffffff8141d06a 7fffffffffffffff ffffffff8141e839 Aug 9 15:43:56 s_src@amelia kernel: Call Trace: Aug 9 15:43:56 s_src@amelia kernel: [<ffffffff8141e80a>] ? usleep_range+0x35/0x35 Aug 9 15:43:56 s_src@amelia kernel: [<ffffffff8141d06a>] ? schedule+0x78/0x85 Aug 9 15:43:56 s_src@amelia kernel: [<ffffffff8141e839>] ? schedule_timeout+0x2f/0x105 Aug 9 15:43:56 s_src@amelia kernel: [<ffffffff8102cd97>] ? __default_send_IPI_dest_field+0x34/0x4f Aug 9 15:43:56 s_src@amelia kernel: [<ffffffff8105d85d>] ? check_preempt_curr+0x41/0x63 Aug 9 15:43:56 s_src@amelia kernel: [<ffffffff8141d73b>] ? do_wait_for_common+0xea/0x11b Aug 9 15:43:56 s_src@amelia kernel: [<ffffffff8105e62c>] ? try_to_wake_up+0x1c6/0x1d7 Aug 9 15:43:56 s_src@amelia kernel: [<ffffffff8141d73b>] ? do_wait_for_common+0xea/0x11b Aug 9 15:43:56 s_src@amelia kernel: [<ffffffff8105e684>] ? wake_up_q+0x3b/0x3b Aug 9 15:43:56 s_src@amelia kernel: [<ffffffff8141d797>] ? wait_for_common+0x2b/0x35 Aug 9 15:43:56 s_src@amelia kernel: [<ffffffff811710a8>] ? btrfs_async_run_delayed_refs+0xc6/0xdc Aug 9 15:43:56 s_src@amelia kernel: [<ffffffff811876e1>] ? __btrfs_end_transaction+0x294/0x2d8 Aug 9 15:43:56 s_src@amelia kernel: [<ffffffff811c7c79>] ? relocate_block_group+0x46b/0x4ca Aug 9 15:43:56 s_src@amelia kernel: [<ffffffff811c7e0f>] ? btrfs_relocate_block_group+0x137/0x25f Aug 9 15:43:56 s_src@amelia kernel: [<ffffffff811a6cbf>] ? btrfs_relocate_chunk.isra.36+0x3c/0xad Aug 9 15:43:56 s_src@amelia kernel: [<ffffffff811a74dd>] ? btrfs_shrink_device+0x20b/0x497 Aug 9 15:43:56 s_src@amelia kernel: [<ffffffff811ad18a>] ? btrfs_rm_device+0x1f2/0x4f9 Aug 9 15:43:56 s_src@amelia kernel: [<ffffffff811b3e58>] ? btrfs_ioctl+0x846/0x1e93 Aug 9 15:43:56 s_src@amelia kernel: [<ffffffff810a3e46>] ? from_kgid_munged+0x9/0x14 Aug 9 15:43:56 s_src@amelia kernel: [<ffffffff8110a71a>] ? cp_new_stat+0x139/0x150 Aug 9 15:43:56 s_src@amelia kernel: [<ffffffff81113cd5>] ? vfs_ioctl+0x16/0x23 Aug 9 15:43:56 s_src@amelia kernel: [<ffffffff81113cd5>] ? vfs_ioctl+0x16/0x23 Aug 9 15:43:56 s_src@amelia kernel: [<ffffffff811141ed>] ? do_vfs_ioctl+0x498/0x508 Aug 9 15:43:56 s_src@amelia kernel: [<ffffffff8110a750>] ? SYSC_newstat+0x1f/0x27 Aug 9 15:43:56 s_src@amelia kernel: [<ffffffff81114296>] ? SyS_ioctl+0x39/0x55 Aug 9 15:43:56 s_src@amelia kernel: [<ffffffff8141f0df>] ? entry_SYSCALL_64_fastpath+0x17/0x93 Aug 9 15:45:56 s_src@amelia kernel: INFO: task btrfs-cleaner:2102 blocked for more than 120 seconds. Aug 9 15:45:56 s_src@amelia kernel: Not tainted 4.7.0-dirty #153 Aug 9 15:45:56 s_src@amelia kernel: "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. Aug 9 15:45:56 s_src@amelia kernel: btrfs-cleaner D ffff88021fc95f40 0 2102 2 0x00000000 Aug 9 15:45:56 s_src@amelia kernel: ffff8800d9223700 0000000000000005 ffff88021fc0c850 ffff880210954000 Aug 9 15:45:56 s_src@amelia kernel: ffff880210953e10 ffff8800d9223700 ffff88021691d018 ffff88021691d014 Aug 9 15:45:56 s_src@amelia kernel: 00000000ffffffff ffffffff8141d06a ffff88021691d010 ffffffff8141d209 Aug 9 15:45:56 s_src@amelia kernel: Call Trace: Aug 9 15:45:56 s_src@amelia kernel: [<ffffffff8141d06a>] ? schedule+0x78/0x85 Aug 9 15:45:56 s_src@amelia kernel: [<ffffffff8141d209>] ? schedule_preempt_disabled+0x5/0x6 Aug 9 15:45:56 s_src@amelia kernel: [<ffffffff8141e041>] ? __mutex_lock_slowpath+0xa9/0x116 Aug 9 15:45:56 s_src@amelia kernel: [<ffffffff8141e0bc>] ? mutex_lock+0xe/0x1d Aug 9 15:45:56 s_src@amelia kernel: [<ffffffff8141e0bc>] ? mutex_lock+0xe/0x1d Aug 9 15:45:56 s_src@amelia kernel: [<ffffffff81178ecf>] ? btrfs_delete_unused_bgs+0xb5/0x346 Aug 9 15:45:56 s_src@amelia kernel: [<ffffffff8117f6a5>] ? cleaner_kthread+0xf2/0x1a8 Aug 9 15:45:56 s_src@amelia kernel: [<ffffffff8117f5b3>] ? btree_invalidatepage+0x85/0x85 Aug 9 15:45:56 s_src@amelia kernel: [<ffffffff81057ba0>] ? kthread+0x95/0x9d Aug 9 15:45:56 s_src@amelia kernel: [<ffffffff8141f2ff>] ? ret_from_fork+0x1f/0x40 Aug 9 15:45:56 s_src@amelia kernel: [<ffffffff81057b0b>] ? init_completion+0x1d/0x1d Aug 9 15:45:56 s_src@amelia kernel: INFO: task btrfs:27655 blocked for more than 120 seconds. Aug 9 15:45:56 s_src@amelia kernel: Not tainted 4.7.0-dirty #153 Aug 9 15:45:56 s_src@amelia kernel: "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. Aug 9 15:45:56 s_src@amelia kernel: btrfs D ffff88021fc15f40 0 27655 27647 0x00000000 Aug 9 15:45:56 s_src@amelia kernel: ffff8800d9988b00 ffff88016e7a7ae0 ffff88021fc95fa8 ffff88016e7a8000 Aug 9 15:45:56 s_src@amelia kernel: ffff88016e7a7b10 ffff8800d9988b00 0000000000000002 ffffffff8141e80a Aug 9 15:45:56 s_src@amelia kernel: ffff8800d9988b00 ffffffff8141d06a 7fffffffffffffff ffffffff8141e839 Aug 9 15:45:56 s_src@amelia kernel: Call Trace: Aug 9 15:45:56 s_src@amelia kernel: [<ffffffff8141e80a>] ? usleep_range+0x35/0x35 Aug 9 15:45:56 s_src@amelia kernel: [<ffffffff8141d06a>] ? schedule+0x78/0x85 Aug 9 15:45:56 s_src@amelia kernel: [<ffffffff8141e839>] ? schedule_timeout+0x2f/0x105 Aug 9 15:45:56 s_src@amelia kernel: [<ffffffff8102cd97>] ? __default_send_IPI_dest_field+0x34/0x4f Aug 9 15:45:56 s_src@amelia kernel: [<ffffffff8105d85d>] ? check_preempt_curr+0x41/0x63 Aug 9 15:45:56 s_src@amelia kernel: [<ffffffff8141d73b>] ? do_wait_for_common+0xea/0x11b Aug 9 15:45:56 s_src@amelia kernel: [<ffffffff8105e62c>] ? try_to_wake_up+0x1c6/0x1d7 Aug 9 15:45:56 s_src@amelia kernel: [<ffffffff8141d73b>] ? do_wait_for_common+0xea/0x11b Aug 9 15:45:56 s_src@amelia kernel: [<ffffffff8105e684>] ? wake_up_q+0x3b/0x3b Aug 9 15:45:56 s_src@amelia kernel: [<ffffffff8141d797>] ? wait_for_common+0x2b/0x35 Aug 9 15:45:56 s_src@amelia kernel: [<ffffffff811710a8>] ? btrfs_async_run_delayed_refs+0xc6/0xdc Aug 9 15:45:56 s_src@amelia kernel: [<ffffffff811876e1>] ? __btrfs_end_transaction+0x294/0x2d8 Aug 9 15:45:56 s_src@amelia kernel: [<ffffffff811c7c79>] ? relocate_block_group+0x46b/0x4ca Aug 9 15:45:56 s_src@amelia kernel: [<ffffffff811c7e0f>] ? btrfs_relocate_block_group+0x137/0x25f Aug 9 15:45:56 s_src@amelia kernel: [<ffffffff811a6cbf>] ? btrfs_relocate_chunk.isra.36+0x3c/0xad Aug 9 15:45:56 s_src@amelia kernel: [<ffffffff811a74dd>] ? btrfs_shrink_device+0x20b/0x497 Aug 9 15:45:56 s_src@amelia kernel: [<ffffffff811ad18a>] ? btrfs_rm_device+0x1f2/0x4f9 Aug 9 15:45:56 s_src@amelia kernel: [<ffffffff811b3e58>] ? btrfs_ioctl+0x846/0x1e93 Aug 9 15:45:56 s_src@amelia kernel: [<ffffffff810a3e46>] ? from_kgid_munged+0x9/0x14 Aug 9 15:45:56 s_src@amelia kernel: [<ffffffff8110a71a>] ? cp_new_stat+0x139/0x150 Aug 9 15:45:56 s_src@amelia kernel: [<ffffffff81113cd5>] ? vfs_ioctl+0x16/0x23 Aug 9 15:45:56 s_src@amelia kernel: [<ffffffff81113cd5>] ? vfs_ioctl+0x16/0x23 Aug 9 15:45:56 s_src@amelia kernel: [<ffffffff811141ed>] ? do_vfs_ioctl+0x498/0x508 Aug 9 15:45:56 s_src@amelia kernel: [<ffffffff8110a750>] ? SYSC_newstat+0x1f/0x27 Aug 9 15:45:56 s_src@amelia kernel: [<ffffffff81114296>] ? SyS_ioctl+0x39/0x55 Aug 9 15:45:56 s_src@amelia kernel: [<ffffffff8141f0df>] ? entry_SYSCALL_64_fastpath+0x17/0x93 Aug 9 15:47:56 s_src@amelia kernel: INFO: task btrfs-cleaner:2102 blocked for more than 120 seconds. Aug 9 15:47:56 s_src@amelia kernel: Not tainted 4.7.0-dirty #153 Aug 9 15:47:56 s_src@amelia kernel: "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. Aug 9 15:47:56 s_src@amelia kernel: btrfs-cleaner D ffff88021fc95f40 0 2102 2 0x00000000 Aug 9 15:47:56 s_src@amelia kernel: ffff8800d9223700 0000000000000005 ffff88021fc0c850 ffff880210954000 Aug 9 15:47:56 s_src@amelia kernel: ffff880210953e10 ffff8800d9223700 ffff88021691d018 ffff88021691d014 Aug 9 15:47:56 s_src@amelia kernel: 00000000ffffffff ffffffff8141d06a ffff88021691d010 ffffffff8141d209 Aug 9 15:47:56 s_src@amelia kernel: Call Trace: Aug 9 15:47:56 s_src@amelia kernel: [<ffffffff8141d06a>] ? schedule+0x78/0x85 Aug 9 15:47:56 s_src@amelia kernel: [<ffffffff8141d209>] ? schedule_preempt_disabled+0x5/0x6 Aug 9 15:47:56 s_src@amelia kernel: [<ffffffff8141e041>] ? __mutex_lock_slowpath+0xa9/0x116 Aug 9 15:47:56 s_src@amelia kernel: [<ffffffff8141e0bc>] ? mutex_lock+0xe/0x1d Aug 9 15:47:56 s_src@amelia kernel: [<ffffffff8141e0bc>] ? mutex_lock+0xe/0x1d Aug 9 15:47:56 s_src@amelia kernel: [<ffffffff81178ecf>] ? btrfs_delete_unused_bgs+0xb5/0x346 Aug 9 15:47:56 s_src@amelia kernel: [<ffffffff8117f6a5>] ? cleaner_kthread+0xf2/0x1a8 Aug 9 15:47:56 s_src@amelia kernel: [<ffffffff8117f5b3>] ? btree_invalidatepage+0x85/0x85 Aug 9 15:47:56 s_src@amelia kernel: [<ffffffff81057ba0>] ? kthread+0x95/0x9d Aug 9 15:47:56 s_src@amelia kernel: [<ffffffff8141f2ff>] ? ret_from_fork+0x1f/0x40 Aug 9 15:47:56 s_src@amelia kernel: [<ffffffff81057b0b>] ? init_completion+0x1d/0x1d Aug 9 15:53:56 s_src@amelia kernel: INFO: task btrfs-cleaner:2102 blocked for more than 120 seconds. Aug 9 15:53:56 s_src@amelia kernel: Not tainted 4.7.0-dirty #153 Aug 9 15:53:56 s_src@amelia kernel: "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. Aug 9 15:53:56 s_src@amelia kernel: btrfs-cleaner D ffff88021fc15f40 0 2102 2 0x00000000 Aug 9 15:53:56 s_src@amelia kernel: ffff8800d9223700 0000000000000005 ffff88021fc0c850 ffff880210954000 Aug 9 15:53:56 s_src@amelia kernel: ffff880210953e10 ffff8800d9223700 ffff88021691d018 ffff88021691d014 Aug 9 15:53:56 s_src@amelia kernel: 00000000ffffffff ffffffff8141d06a ffff88021691d010 ffffffff8141d209 Aug 9 15:53:56 s_src@amelia kernel: Call Trace: Aug 9 15:53:56 s_src@amelia kernel: [<ffffffff8141d06a>] ? schedule+0x78/0x85 Aug 9 15:53:56 s_src@amelia kernel: [<ffffffff8141d209>] ? schedule_preempt_disabled+0x5/0x6 Aug 9 15:53:56 s_src@amelia kernel: [<ffffffff8141e041>] ? __mutex_lock_slowpath+0xa9/0x116 Aug 9 15:53:56 s_src@amelia kernel: [<ffffffff8141e0bc>] ? mutex_lock+0xe/0x1d Aug 9 15:53:56 s_src@amelia kernel: [<ffffffff8141e0bc>] ? mutex_lock+0xe/0x1d Aug 9 15:53:56 s_src@amelia kernel: [<ffffffff81178ecf>] ? btrfs_delete_unused_bgs+0xb5/0x346 Aug 9 15:53:56 s_src@amelia kernel: [<ffffffff8117f6a5>] ? cleaner_kthread+0xf2/0x1a8 Aug 9 15:53:56 s_src@amelia kernel: [<ffffffff8117f5b3>] ? btree_invalidatepage+0x85/0x85 Aug 9 15:53:56 s_src@amelia kernel: [<ffffffff81057ba0>] ? kthread+0x95/0x9d Aug 9 15:53:56 s_src@amelia kernel: [<ffffffff8141f2ff>] ? ret_from_fork+0x1f/0x40 Aug 9 15:53:56 s_src@amelia kernel: [<ffffffff81057b0b>] ? init_completion+0x1d/0x1d Aug 9 15:53:56 s_src@amelia kernel: INFO: task btrfs:27655 blocked for more than 120 seconds. Aug 9 15:53:56 s_src@amelia kernel: Not tainted 4.7.0-dirty #153 Aug 9 15:53:56 s_src@amelia kernel: "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. Aug 9 15:53:56 s_src@amelia kernel: btrfs D ffff88021fc95f40 0 27655 27647 0x00000000 Aug 9 15:53:56 s_src@amelia kernel: ffff8800d9988b00 ffff88016e7a7ae0 ffff88021fc15fa8 ffff88016e7a8000 Aug 9 15:53:56 s_src@amelia kernel: ffff88016e7a7b10 ffff8800d9988b00 0000000000000002 ffffffff8141e80a Aug 9 15:53:56 s_src@amelia kernel: ffff8800d9988b00 ffffffff8141d06a 7fffffffffffffff ffffffff8141e839 Aug 9 15:53:56 s_src@amelia kernel: Call Trace: Aug 9 15:53:56 s_src@amelia kernel: [<ffffffff8141e80a>] ? usleep_range+0x35/0x35 Aug 9 15:53:56 s_src@amelia kernel: [<ffffffff8141d06a>] ? schedule+0x78/0x85 Aug 9 15:53:56 s_src@amelia kernel: [<ffffffff8141e839>] ? schedule_timeout+0x2f/0x105 Aug 9 15:53:56 s_src@amelia kernel: [<ffffffff8102cd97>] ? __default_send_IPI_dest_field+0x34/0x4f Aug 9 15:53:56 s_src@amelia kernel: [<ffffffff8105d85d>] ? check_preempt_curr+0x41/0x63 Aug 9 15:53:56 s_src@amelia kernel: [<ffffffff8141d73b>] ? do_wait_for_common+0xea/0x11b Aug 9 15:53:56 s_src@amelia kernel: [<ffffffff8105e62c>] ? try_to_wake_up+0x1c6/0x1d7 Aug 9 15:53:56 s_src@amelia kernel: [<ffffffff8141d73b>] ? do_wait_for_common+0xea/0x11b Aug 9 15:53:56 s_src@amelia kernel: [<ffffffff8105e684>] ? wake_up_q+0x3b/0x3b Aug 9 15:53:56 s_src@amelia kernel: [<ffffffff8141d797>] ? wait_for_common+0x2b/0x35 Aug 9 15:53:56 s_src@amelia kernel: [<ffffffff811710a8>] ? btrfs_async_run_delayed_refs+0xc6/0xdc Aug 9 15:53:56 s_src@amelia kernel: [<ffffffff811876e1>] ? __btrfs_end_transaction+0x294/0x2d8 Aug 9 15:53:56 s_src@amelia kernel: [<ffffffff811c7c79>] ? relocate_block_group+0x46b/0x4ca Aug 9 15:53:56 s_src@amelia kernel: [<ffffffff811c7e0f>] ? btrfs_relocate_block_group+0x137/0x25f Aug 9 15:53:56 s_src@amelia kernel: [<ffffffff811a6cbf>] ? btrfs_relocate_chunk.isra.36+0x3c/0xad Aug 9 15:53:56 s_src@amelia kernel: [<ffffffff811a74dd>] ? btrfs_shrink_device+0x20b/0x497 Aug 9 15:53:56 s_src@amelia kernel: [<ffffffff811ad18a>] ? btrfs_rm_device+0x1f2/0x4f9 Aug 9 15:53:56 s_src@amelia kernel: [<ffffffff811b3e58>] ? btrfs_ioctl+0x846/0x1e93 Aug 9 15:53:56 s_src@amelia kernel: [<ffffffff810a3e46>] ? from_kgid_munged+0x9/0x14 Aug 9 15:53:56 s_src@amelia kernel: [<ffffffff8110a71a>] ? cp_new_stat+0x139/0x150 Aug 9 15:53:56 s_src@amelia kernel: [<ffffffff81113cd5>] ? vfs_ioctl+0x16/0x23 Aug 9 15:53:56 s_src@amelia kernel: [<ffffffff81113cd5>] ? vfs_ioctl+0x16/0x23 Aug 9 15:53:56 s_src@amelia kernel: [<ffffffff811141ed>] ? do_vfs_ioctl+0x498/0x508 Aug 9 15:53:56 s_src@amelia kernel: [<ffffffff8110a750>] ? SYSC_newstat+0x1f/0x27 Aug 9 15:53:56 s_src@amelia kernel: [<ffffffff81114296>] ? SyS_ioctl+0x39/0x55 Aug 9 15:53:56 s_src@amelia kernel: [<ffffffff8141f0df>] ? entry_SYSCALL_64_fastpath+0x17/0x93 Aug 9 15:55:56 s_src@amelia kernel: INFO: task btrfs-cleaner:2102 blocked for more than 120 seconds. Aug 9 15:55:56 s_src@amelia kernel: Not tainted 4.7.0-dirty #153 Aug 9 15:55:56 s_src@amelia kernel: "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. Aug 9 15:55:56 s_src@amelia kernel: btrfs-cleaner D ffff88021fc15f40 0 2102 2 0x00000000 Aug 9 15:55:56 s_src@amelia kernel: ffff8800d9223700 0000000000000005 ffff88021fc0c850 ffff880210954000 Aug 9 15:55:56 s_src@amelia kernel: ffff880210953e10 ffff8800d9223700 ffff88021691d018 ffff88021691d014 Aug 9 15:55:56 s_src@amelia kernel: 00000000ffffffff ffffffff8141d06a ffff88021691d010 ffffffff8141d209 Aug 9 15:55:56 s_src@amelia kernel: Call Trace: Aug 9 15:55:56 s_src@amelia kernel: [<ffffffff8141d06a>] ? schedule+0x78/0x85 Aug 9 15:55:56 s_src@amelia kernel: [<ffffffff8141d209>] ? schedule_preempt_disabled+0x5/0x6 Aug 9 15:55:56 s_src@amelia kernel: [<ffffffff8141e041>] ? __mutex_lock_slowpath+0xa9/0x116 Aug 9 15:55:56 s_src@amelia kernel: [<ffffffff8141e0bc>] ? mutex_lock+0xe/0x1d Aug 9 15:55:56 s_src@amelia kernel: [<ffffffff8141e0bc>] ? mutex_lock+0xe/0x1d Aug 9 15:55:56 s_src@amelia kernel: [<ffffffff81178ecf>] ? btrfs_delete_unused_bgs+0xb5/0x346 Aug 9 15:55:56 s_src@amelia kernel: [<ffffffff8117f6a5>] ? cleaner_kthread+0xf2/0x1a8 Aug 9 15:55:56 s_src@amelia kernel: [<ffffffff8117f5b3>] ? btree_invalidatepage+0x85/0x85 Aug 9 15:55:56 s_src@amelia kernel: [<ffffffff81057ba0>] ? kthread+0x95/0x9d Aug 9 15:55:56 s_src@amelia kernel: [<ffffffff8141f2ff>] ? ret_from_fork+0x1f/0x40 Aug 9 15:55:56 s_src@amelia kernel: [<ffffffff81057b0b>] ? init_completion+0x1d/0x1d Aug 9 15:55:56 s_src@amelia kernel: INFO: task btrfs:27655 blocked for more than 120 seconds. Aug 9 15:55:56 s_src@amelia kernel: Not tainted 4.7.0-dirty #153 Aug 9 15:55:56 s_src@amelia kernel: "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. Aug 9 15:55:56 s_src@amelia kernel: btrfs D ffff88021fc95f40 0 27655 27647 0x00000000 Aug 9 15:55:56 s_src@amelia kernel: ffff8800d9988b00 ffff88016e7a7ae0 ffff88021fc15fa8 ffff88016e7a8000 Aug 9 15:55:56 s_src@amelia kernel: ffff88016e7a7b10 ffff8800d9988b00 0000000000000002 ffffffff8141e80a Aug 9 15:55:56 s_src@amelia kernel: ffff8800d9988b00 ffffffff8141d06a 7fffffffffffffff ffffffff8141e839 Aug 9 15:55:56 s_src@amelia kernel: Call Trace: Aug 9 15:55:56 s_src@amelia kernel: [<ffffffff8141e80a>] ? usleep_range+0x35/0x35 Aug 9 15:55:56 s_src@amelia kernel: [<ffffffff8141d06a>] ? schedule+0x78/0x85 Aug 9 15:55:56 s_src@amelia kernel: [<ffffffff8141e839>] ? schedule_timeout+0x2f/0x105 Aug 9 15:55:56 s_src@amelia kernel: [<ffffffff8102cd97>] ? __default_send_IPI_dest_field+0x34/0x4f Aug 9 15:55:56 s_src@amelia kernel: [<ffffffff8105d85d>] ? check_preempt_curr+0x41/0x63 Aug 9 15:55:56 s_src@amelia kernel: [<ffffffff8141d73b>] ? do_wait_for_common+0xea/0x11b Aug 9 15:55:56 s_src@amelia kernel: [<ffffffff8105e62c>] ? try_to_wake_up+0x1c6/0x1d7 Aug 9 15:55:56 s_src@amelia kernel: [<ffffffff8141d73b>] ? do_wait_for_common+0xea/0x11b Aug 9 15:55:56 s_src@amelia kernel: [<ffffffff8105e684>] ? wake_up_q+0x3b/0x3b Aug 9 15:55:56 s_src@amelia kernel: [<ffffffff8141d797>] ? wait_for_common+0x2b/0x35 Aug 9 15:55:56 s_src@amelia kernel: [<ffffffff811710a8>] ? btrfs_async_run_delayed_refs+0xc6/0xdc Aug 9 15:55:56 s_src@amelia kernel: [<ffffffff811876e1>] ? __btrfs_end_transaction+0x294/0x2d8 Aug 9 15:55:56 s_src@amelia kernel: [<ffffffff811c7c79>] ? relocate_block_group+0x46b/0x4ca Aug 9 15:55:56 s_src@amelia kernel: [<ffffffff811c7e0f>] ? btrfs_relocate_block_group+0x137/0x25f Aug 9 15:55:56 s_src@amelia kernel: [<ffffffff811a6cbf>] ? btrfs_relocate_chunk.isra.36+0x3c/0xad Aug 9 15:55:56 s_src@amelia kernel: [<ffffffff811a74dd>] ? btrfs_shrink_device+0x20b/0x497 Aug 9 15:55:56 s_src@amelia kernel: [<ffffffff811ad18a>] ? btrfs_rm_device+0x1f2/0x4f9 Aug 9 15:55:56 s_src@amelia kernel: [<ffffffff811b3e58>] ? btrfs_ioctl+0x846/0x1e93 Aug 9 15:55:56 s_src@amelia kernel: [<ffffffff810a3e46>] ? from_kgid_munged+0x9/0x14 Aug 9 15:55:56 s_src@amelia kernel: [<ffffffff8110a71a>] ? cp_new_stat+0x139/0x150 Aug 9 15:55:56 s_src@amelia kernel: [<ffffffff81113cd5>] ? vfs_ioctl+0x16/0x23 Aug 9 15:55:56 s_src@amelia kernel: [<ffffffff81113cd5>] ? vfs_ioctl+0x16/0x23 Aug 9 15:55:56 s_src@amelia kernel: [<ffffffff811141ed>] ? do_vfs_ioctl+0x498/0x508 Aug 9 15:55:56 s_src@amelia kernel: [<ffffffff8110a750>] ? SYSC_newstat+0x1f/0x27 Aug 9 15:55:56 s_src@amelia kernel: [<ffffffff81114296>] ? SyS_ioctl+0x39/0x55 Aug 9 15:55:56 s_src@amelia kernel: [<ffffffff8141f0df>] ? entry_SYSCALL_64_fastpath+0x17/0x93 Aug 9 15:57:01 nikola -- MARK -- Aug 9 15:58:13 s_src@amelia rpc.mountd[3777]: auth_unix_ip: inbuf 'nfsd 2001:08b0:11fe:8d1d:0000:0000:0000:0011' Aug 9 15:58:13 s_src@amelia rpc.mountd[3777]: auth_unix_ip: client 0x6c6690 '*,2001:8b0:11fe:8d1d::/64,2001:8b0:11fe:8d1d::11' Aug 9 15:59:56 s_src@amelia kernel: INFO: task btrfs-cleaner:2102 blocked for more than 120 seconds. Aug 9 15:59:56 s_src@amelia kernel: Not tainted 4.7.0-dirty #153 Aug 9 15:59:56 s_src@amelia kernel: "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. Aug 9 15:59:56 s_src@amelia kernel: btrfs-cleaner D ffff88021fc95f40 0 2102 2 0x00000000 Aug 9 15:59:56 s_src@amelia kernel: ffff8800d9223700 0000000000000005 ffff88021fc0c850 ffff880210954000 Aug 9 15:59:56 s_src@amelia kernel: ffff880210953e10 ffff8800d9223700 ffff88021691d018 ffff88021691d014 Aug 9 15:59:56 s_src@amelia kernel: 00000000ffffffff ffffffff8141d06a ffff88021691d010 ffffffff8141d209 Aug 9 15:59:56 s_src@amelia kernel: Call Trace: Aug 9 15:59:56 s_src@amelia kernel: [<ffffffff8141d06a>] ? schedule+0x78/0x85 Aug 9 15:59:56 s_src@amelia kernel: [<ffffffff8141d209>] ? schedule_preempt_disabled+0x5/0x6 Aug 9 15:59:56 s_src@amelia kernel: [<ffffffff8141e041>] ? __mutex_lock_slowpath+0xa9/0x116 Aug 9 15:59:56 s_src@amelia kernel: [<ffffffff8141e0bc>] ? mutex_lock+0xe/0x1d Aug 9 15:59:56 s_src@amelia kernel: [<ffffffff8141e0bc>] ? mutex_lock+0xe/0x1d Aug 9 15:59:56 s_src@amelia kernel: [<ffffffff81178ecf>] ? btrfs_delete_unused_bgs+0xb5/0x346 Aug 9 15:59:56 s_src@amelia kernel: [<ffffffff8117f6a5>] ? cleaner_kthread+0xf2/0x1a8 Aug 9 15:59:56 s_src@amelia kernel: [<ffffffff8117f5b3>] ? btree_invalidatepage+0x85/0x85 Aug 9 15:59:56 s_src@amelia kernel: [<ffffffff81057ba0>] ? kthread+0x95/0x9d Aug 9 15:59:56 s_src@amelia kernel: [<ffffffff8141f2ff>] ? ret_from_fork+0x1f/0x40 Aug 9 15:59:56 s_src@amelia kernel: [<ffffffff81057b0b>] ? init_completion+0x1d/0x1d -- Hugo Mills | Great films about cricket: Monster's No-Ball hugo@... carfax.org.uk | http://carfax.org.uk/ | PGP: E2AB1DE4 |
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