From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from relay3-d.mail.gandi.net ([217.70.183.195]:60076 "EHLO relay3-d.mail.gandi.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1754537AbbDTKQh (ORCPT ); Mon, 20 Apr 2015 06:16:37 -0400 Received: from mfilter41-d.gandi.net (mfilter41-d.gandi.net [217.70.178.173]) by relay3-d.mail.gandi.net (Postfix) with ESMTP id 3DDA6A81C6 for ; Mon, 20 Apr 2015 12:16:35 +0200 (CEST) Received: from relay3-d.mail.gandi.net ([217.70.183.195]) by mfilter41-d.gandi.net (mfilter41-d.gandi.net [10.0.15.180]) (amavisd-new, port 10024) with ESMTP id oxS4eSR1ZYN9 for ; Mon, 20 Apr 2015 12:16:33 +0200 (CEST) Received: from [10.64.203.109] (unknown [217.70.211.10]) (Authenticated sender: olivier@onsd.eu) by relay3-d.mail.gandi.net (Postfix) with ESMTPSA id A4FDEA8154 for ; Mon, 20 Apr 2015 12:16:33 +0200 (CEST) Message-ID: <5534D201.7080803@onsd.eu> Date: Mon, 20 Apr 2015 12:16:33 +0200 From: =?UTF-8?B?Ik7DqW1veiBTYWludC1EaXppZXIsIE9saXZpZXIi?= MIME-Version: 1.0 To: linux-btrfs@vger.kernel.org Subject: unable to mount a btrfs file system kernel 3.19.2 Content-Type: text/plain; charset=utf-8 Sender: linux-btrfs-owner@vger.kernel.org List-ID: Hello everyone, I have an issue with my ssd where a btrfs partition is located. I have a /dev/sdb1 in ext4 for the /boot, and the rest of the ssd is /dev/sdb2 which is the root of my Archlinux. When I boot, it hangs up after loading the kernel. So I tried with an Archlinux liveboot, and I have the same behavior with the following trace in logs when I try to mount the btrfs partition : Apr 11 16:25:56 archiso kernel: INFO: task mount:573 blocked for more than 120 seconds. Apr 11 16:25:56 archiso kernel: Not tainted 3.19.2-1-ARCH #1 Apr 11 16:25:56 archiso kernel: "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. Apr 11 16:25:56 archiso kernel: mount D ffff8807f1c937f8 0 573 524 0x00000004 Apr 11 16:25:56 archiso kernel: ffff8807f1c937f8 ffff8807f7d6ed50 0000000000013f00 ffff8807f1c93fd8 Apr 11 16:25:56 archiso kernel: 0000000000013f00 ffff8807f98109f0 ffff8807f7d6ed50 ffff8807ecce5ea0 Apr 11 16:25:56 archiso kernel: 0000000000000004 ffff8807f1c93758 ffffffffa048ec91 ffff8807ecce5ea0 Apr 11 16:25:56 archiso kernel: Call Trace: Apr 11 16:25:56 archiso kernel: [] ? set_extent_buffer_dirty+0x71/0xc0 [btrfs] Apr 11 16:25:56 archiso kernel: [] ? btrfs_buffer_uptodate+0x56/0x80 [btrfs] Apr 11 16:25:56 archiso kernel: [] schedule+0x29/0x70 Apr 11 16:25:56 archiso kernel: [] btrfs_tree_lock+0x65/0x200 [btrfs] Apr 11 16:25:56 archiso kernel: [] ? wait_woken+0x90/0x90 Apr 11 16:25:56 archiso kernel: [] btrfs_search_slot+0x799/0xaa0 [btrfs] Apr 11 16:25:56 archiso kernel: [] ? autoremove_wake_function+0x40/0x40 Apr 11 16:25:56 archiso kernel: [] btrfs_insert_empty_items+0x75/0xd0 [btrfs] Apr 11 16:25:56 archiso kernel: [] btrfs_insert_orphan_item+0x67/0xa0 [btrfs] Apr 11 16:25:56 archiso kernel: [] insert_orphan_item+0x5e/0x90 [btrfs] Apr 11 16:25:56 archiso kernel: [] replay_one_buffer+0x361/0x380 [btrfs] Apr 11 16:25:56 archiso kernel: [] ? alloc_extent_buffer+0x34/0x370 [btrfs] Apr 11 16:25:56 archiso kernel: [] walk_down_log_tree+0x1d3/0x410 [btrfs] Apr 11 16:25:56 archiso kernel: [] walk_log_tree+0xcb/0x1d0 [btrfs] Apr 11 16:25:56 archiso kernel: [] btrfs_recover_log_trees+0x1e7/0x490 [btrfs] Apr 11 16:25:56 archiso kernel: [] ? replay_one_dir_item+0xf0/0xf0 [btrfs] Apr 11 16:25:56 archiso kernel: [] open_ctree+0x17ae/0x2030 [btrfs] Apr 11 16:25:56 archiso kernel: [] btrfs_mount+0x843/0x920 [btrfs] Apr 11 16:25:56 archiso kernel: [] ? pcpu_alloc+0x35a/0x680 Apr 11 16:25:56 archiso kernel: [] mount_fs+0x38/0x1c0 Apr 11 16:25:56 archiso kernel: [] ? __alloc_percpu+0x15/0x20 Apr 11 16:25:56 archiso kernel: [] vfs_kern_mount+0x6b/0x120 Apr 11 16:25:56 archiso kernel: [] do_mount+0x224/0xb40 Apr 11 16:25:56 archiso kernel: [] SyS_mount+0x7e/0xe0 Apr 11 16:25:56 archiso kernel: [] system_call_fastpath+0x12/0x17 Apr 11 16:25:56 archiso kernel: INFO: task btrfs-transacti:596 blocked for more than 120 seconds. Apr 11 16:25:56 archiso kernel: Not tainted 3.19.2-1-ARCH #1 Apr 11 16:25:56 archiso kernel: "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. Apr 11 16:25:56 archiso kernel: btrfs-transacti D ffff8807e8937d98 0 596 2 0x00000000 Apr 11 16:25:56 archiso kernel: ffff8807e8937d98 ffff8807f2e7bba0 0000000000013f00 ffff8807e8937fd8 Apr 11 16:25:56 archiso kernel: 0000000000013f00 ffff8807f9e76d50 ffff8807f2e7bba0 ffff8807eccb90c8 Apr 11 16:25:56 archiso kernel: ffff8807ecc79000 ffff880000000000 ffff8807ecc79000 ffff880700000033 Apr 11 16:25:56 archiso kernel: Call Trace: Apr 11 16:25:56 archiso kernel: [] ? kmem_cache_alloc+0x16a/0x180 Apr 11 16:25:56 archiso kernel: [] ? btrfs_free_path+0x2a/0x40 [btrfs] Apr 11 16:25:56 archiso kernel: [] ? __btrfs_run_delayed_items+0xf3/0x1d0 [btrfs] Apr 11 16:25:56 archiso kernel: [] schedule+0x29/0x70 Apr 11 16:25:56 archiso kernel: [] btrfs_commit_transaction+0x2a5/0xbe0 [btrfs] Apr 11 16:25:56 archiso kernel: [] ? wait_woken+0x90/0x90 Apr 11 16:25:56 archiso kernel: [] transaction_kthread+0x1d5/0x240 [btrfs] Apr 11 16:25:56 archiso kernel: [] ? btrfs_cleanup_transaction+0x5a0/0x5a0 [btrfs] Apr 11 16:25:56 archiso kernel: [] kthread+0xd8/0xf0 Apr 11 16:25:56 archiso kernel: [] ? kthread_create_on_node+0x1c0/0x1c0 Apr 11 16:25:56 archiso kernel: [] ret_from_fork+0x58/0x90 Apr 11 16:25:56 archiso kernel: [] ? kthread_create_on_node+0x1c0/0x1c0 Additional information : Label: none uuid: aa6b1bae-3c28-482d-a446-c31875f21cf0 Total devices 1 FS bytes used 64.63GiB devid 1 size 111.29GiB used 111.02GiB path /dev/sda2 btrfs-progs v3.19 Linux archiso 3.19.2-1-ARCH #1 SMP PREEMPT Wed Mar 18 16:21:02 CET 2015 x86_64 GNU/Linux And the full output from journald is available there : http://sprunge.us/jPMG Is it a known bug? Or does someone have an idea about how I could fix this issue? Thank you in advance. Olivier.