I've get it several times, after rebooting or unclean shutdown system. This is very strange bug, because if i reboot, and mount it from live cd, all that okay, and after reboot in system, system successful mount all and working good. i did try to found any previous issues on it, and found nothing.
[ 240.100043] INFO: task mount:485 blocked for more than 120 seconds. [ 240.100156] Not tainted 3.19.0-10-generic #10-Ubuntu [ 240.100244] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 240.100359] mount D ffff88009e907818 0 485 1 0x00000004 [ 240.100364] ffff88009e907818 ffff8804473ac4b0 0000000000014200 ffff88009e907fd8 [ 240.100368] 0000000000014200 ffff88044ae3f5c0 ffff8804473ac4b0 ffff88009e907828 [ 240.100371] ffff88045d073c70 ffff88045d073cd8 ffff88045d073cf0 ffff88009e907858 [ 240.100374] Call Trace: [ 240.100386] [<ffffffff817c38e9>] schedule+0x29/0x70 [ 240.100427] [<ffffffffc050a7e5>] btrfs_tree_lock+0x55/0x1f0 [btrfs] [ 240.100432] [<ffffffff810b6200>] ? wait_woken+0x90/0x90 [ 240.100444] [<ffffffffc04acc69>] btrfs_search_slot+0x709/0xa60 [btrfs] [ 240.100457] [<ffffffffc04ae8ad>] btrfs_insert_empty_items+0x7d/0xd0 [btrfs] [ 240.100469] [<ffffffffc04a78aa>] ? btrfs_alloc_path+0x1a/0x20 [btrfs] [ 240.100487] [<ffffffffc050aab8>] btrfs_insert_orphan_item+0x58/0x80 [btrfs] [ 240.100509] [<ffffffffc050c04e>] insert_orphan_item+0x5e/0x90 [btrfs] [ 240.100529] [<ffffffffc0510d11>] replay_one_buffer+0x351/0x370 [btrfs] [ 240.100547] [<ffffffffc050b991>] walk_up_log_tree+0xd1/0x240 [btrfs] [ 240.100558] [<ffffffffc04a78aa>] ? btrfs_alloc_path+0x1a/0x20 [btrfs] [ 240.100577] [<ffffffffc050bb9b>] walk_log_tree+0x9b/0x1a0 [btrfs] [ 240.100596] [<ffffffffc0513214>] btrfs_recover_log_trees+0x1d4/0x470 [btrfs] [ 240.100614] [<ffffffffc05109c0>] ? replay_one_extent+0x6b0/0x6b0 [btrfs] [ 240.100630] [<ffffffffc04ceb23>] open_ctree+0x1813/0x2090 [btrfs] [ 240.100642] [<ffffffffc04a4b00>] btrfs_mount+0x850/0x920 [btrfs] [ 240.100649] [<ffffffff811f7208>] mount_fs+0x38/0x1c0 [ 240.100653] [<ffffffff8119b5e5>] ? __alloc_percpu+0x15/0x20 [ 240.100658] [<ffffffff812138fb>] vfs_kern_mount+0x6b/0x120 [ 240.100662] [<ffffffff81216754>] do_mount+0x204/0xb20 [ 240.100665] [<ffffffff8121738b>] SyS_mount+0x8b/0xd0 [ 240.100669] [<ffffffff817c824d>] system_call_fastpath+0x16/0x1b [ 240.100676] INFO: task btrfs-transacti:506 blocked for more than 120 seconds. [ 240.100780] Not tainted 3.19.0-10-generic #10-Ubuntu [ 240.100869] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 240.100982] btrfs-transacti D ffff8804474abdc8 0 506 2 0x00000000 [ 240.100986] ffff8804474abdc8 ffff88009ef83ae0 0000000000014200 ffff8804474abfd8 [ 240.100989] 0000000000014200 ffffffff81c1a580 ffff88009ef83ae0 ffff8804474abdd8 [ 240.100992] ffff880448695000 ffff88045d396000 ffff88045d33afc0 ffff8804474abe00 [ 240.100995] Call Trace: [ 240.100998] [<ffffffff817c38e9>] schedule+0x29/0x70 [ 240.101018] [<ffffffffc04d14c5>] btrfs_commit_transaction+0x375/0xa40 [btrfs] [ 240.101021] [<ffffffff810b6200>] ? wait_woken+0x90/0x90 [ 240.101037] [<ffffffffc04ccf5d>] transaction_kthread+0x1dd/0x250 [btrfs] [ 240.101052] [<ffffffffc04ccd80>] ? btrfs_cleanup_transaction+0x550/0x550 [btrfs] [ 240.101057] [<ffffffff81094679>] kthread+0xc9/0xe0 [ 240.101061] [<ffffffff810945b0>] ? kthread_create_on_node+0x1c0/0x1c0 [ 240.101064] [<ffffffff817c8198>] ret_from_fork+0x58/0x90 [ 240.101067] [<ffffffff810945b0>] ? kthread_create_on_node+0x1c0/0x1c0 -- Have a nice day, Timofey. -- 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
