Do you have this fix ..
[PATCH] Btrfs: release path before starting transaction in
can_nocow_extent
could you try ?.
Thanks, Anand
On 03/24/2015 12:37 AM, Rich Freeman wrote:
On Mon, Mar 23, 2015 at 9:22 AM, Rich Freeman
<r-bt...@thefreemanclan.net> wrote:
I'm having a similar problem. I'm getting some kind of btrfs
corruption that causes a panic/reboot, and then the initramfs won't
mount root for 3.18.9, but it will mount it for 3.18.8.
Running on 3.18.8 eventually caused the panic to repeat, so I'm not
sure that 3.18.9 is necessarily breaking things - it might just be
fussier about not mounting a dirty fs.
This continues to happen. The filesystem won't mount with 3.18.9, but
will mount with 3.18.8.
Here is the dmesg output from dracut on 3.18.9:
[ 240.765147] INFO: task mount:395 blocked for more than 120 seconds.
[ 240.765224] Not tainted 3.18.9-gentoo #1
[ 240.765274] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs"
disables this message.
[ 240.765809] mount D ffff880427c51900 11800 395 1 0x00000004
[ 240.765927] ffff88040d2f76a8 0000000000000082 ffff8804106170f0
0000000000011900
[ 240.766181] ffff88040d2f7fd8 0000000000011900 ffff88041593d6e0
ffff8804106170f0
[ 240.766373] ffff88040d2f76b8 ffff8800cb505c70 ffff8800cb505cf0
ffff8800cb505cd8
[ 240.766556] Call Trace:
[ 240.766618] [<ffffffff81504084>] schedule+0x24/0x60
[ 240.766719] [<ffffffffa032fe9d>] btrfs_tree_lock+0x4d/0x1c0 [btrfs]
[ 240.766780] [<ffffffff810882f0>] ? prepare_to_wait_event+0x100/0x100
[ 240.766859] [<ffffffffa02d3859>] btrfs_search_slot+0x6e9/0x9f0 [btrfs]
[ 240.766939] [<ffffffffa02d5503>] btrfs_insert_empty_items+0x73/0xd0 [btrfs]
[ 240.767017] [<ffffffffa02ce495>] ? btrfs_alloc_path+0x15/0x20 [btrfs]
[ 240.767118] [<ffffffffa033012a>] btrfs_insert_orphan_item+0x5a/0x80 [btrfs]
[ 240.767211] [<ffffffffa03316c5>] insert_orphan_item+0x65/0xa0 [btrfs]
[ 240.767301] [<ffffffffa0336589>] replay_one_buffer+0x349/0x360 [btrfs]
[ 240.767391] [<ffffffffa0330ff5>] walk_up_log_tree+0xc5/0x220 [btrfs]
[ 240.767481] [<ffffffffa03311eb>] walk_log_tree+0x9b/0x1a0 [btrfs]
[ 240.767572] [<ffffffffa0338932>] btrfs_recover_log_trees+0x262/0x4d0 [btrfs]
[ 240.767662] [<ffffffffa0336240>] ? replay_one_extent+0x780/0x780 [btrfs]
[ 240.767749] [<ffffffffa02f4b9f>] open_ctree+0x17ef/0x2100 [btrfs]
[ 240.767827] [<ffffffffa02cb876>] btrfs_mount+0x766/0x900 [btrfs]
[ 240.767886] [<ffffffff81175bef>] mount_fs+0x3f/0x1b0
[ 240.767940] [<ffffffff811331b0>] ? __alloc_percpu+0x10/0x20
[ 240.767997] [<ffffffff8118fc53>] vfs_kern_mount+0x63/0x100
[ 240.768087] [<ffffffffa02cb28b>] btrfs_mount+0x17b/0x900 [btrfs]
[ 240.768146] [<ffffffff81132e8a>] ? pcpu_alloc+0x35a/0x660
[ 240.768201] [<ffffffff81175bef>] mount_fs+0x3f/0x1b0
[ 240.768255] [<ffffffff811331b0>] ? __alloc_percpu+0x10/0x20
[ 240.768311] [<ffffffff8118fc53>] vfs_kern_mount+0x63/0x100
[ 240.768365] [<ffffffff8119289c>] do_mount+0x20c/0xaf0
[ 240.768420] [<ffffffff81118eb9>] ? __get_free_pages+0x9/0x40
[ 240.768474] [<ffffffff81192555>] ? copy_mount_options+0x35/0x150
[ 240.768528] [<ffffffff81193497>] SyS_mount+0x97/0xf0
[ 240.768582] [<ffffffff81507ad2>] system_call_fastpath+0x12/0x17
[ 240.768638] INFO: task btrfs-transacti:435 blocked for more than 120 seconds.
[ 240.768693] Not tainted 3.18.9-gentoo #1
[ 240.768742] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs"
disables this message.
[ 240.768811] btrfs-transacti D ffff880427c11900 12424 435 2 0x00000000
[ 240.768928] ffff8800cfab7dc8 0000000000000046 ffff880410f01a10
0000000000011900
[ 240.769119] ffff8800cfab7fd8 0000000000011900 ffffffff81a16460
ffff880410f01a10
[ 240.769302] ffff8800cfab7dd8 ffff88040c7ab000 ffff8800cb554000
ffff8800cb5301a0
[ 240.769485] Call Trace:
[ 240.769540] [<ffffffff81504084>] schedule+0x24/0x60
[ 240.769625] [<ffffffffa02f73e5>]
btrfs_commit_transaction+0x275/0xa40 [btrfs]
[ 240.769698] [<ffffffff810882f0>] ? prepare_to_wait_event+0x100/0x100
[ 240.769784] [<ffffffffa02f305d>] transaction_kthread+0x1ad/0x240 [btrfs]
[ 240.769870] [<ffffffffa02f2eb0>] ?
btrfs_cleanup_transaction+0x530/0x530 [btrfs]
[ 240.769942] [<ffffffff8106aa04>] kthread+0xc4/0xe0
[ 240.769997] [<ffffffff8106a940>] ? kthread_create_on_node+0x190/0x190
[ 240.770064] [<ffffffff81507a2c>] ret_from_fork+0x7c/0xb0
[ 240.770119] [<ffffffff8106a940>] ? kthread_create_on_node+0x190/0x190
[ 360.832426] INFO: task mount:395 blocked for more than 120 seconds.
[ 360.832488] Not tainted 3.18.9-gentoo #1
[ 360.832539] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs"
disables this message.
[ 360.832609] mount D ffff880427c51900 11800 395 1 0x00000004
[ 360.832727] ffff88040d2f76a8 0000000000000082 ffff8804106170f0
0000000000011900
[ 360.832911] ffff88040d2f7fd8 0000000000011900 ffff88041593d6e0
ffff8804106170f0
[ 360.833093] ffff88040d2f76b8 ffff8800cb505c70 ffff8800cb505cf0
ffff8800cb505cd8
[ 360.833276] Call Trace:
[ 360.833385] [<ffffffff81504084>] schedule+0x24/0x60
[ 360.833495] [<ffffffffa032fe9d>] btrfs_tree_lock+0x4d/0x1c0 [btrfs]
[ 360.833555] [<ffffffff810882f0>] ? prepare_to_wait_event+0x100/0x100
[ 360.833634] [<ffffffffa02d3859>] btrfs_search_slot+0x6e9/0x9f0 [btrfs]
[ 360.833715] [<ffffffffa02d5503>] btrfs_insert_empty_items+0x73/0xd0 [btrfs]
[ 360.833793] [<ffffffffa02ce495>] ? btrfs_alloc_path+0x15/0x20 [btrfs]
[ 360.833884] [<ffffffffa033012a>] btrfs_insert_orphan_item+0x5a/0x80 [btrfs]
[ 360.833975] [<ffffffffa03316c5>] insert_orphan_item+0x65/0xa0 [btrfs]
[ 360.834065] [<ffffffffa0336589>] replay_one_buffer+0x349/0x360 [btrfs]
[ 360.834155] [<ffffffffa0330ff5>] walk_up_log_tree+0xc5/0x220 [btrfs]
[ 360.834245] [<ffffffffa03311eb>] walk_log_tree+0x9b/0x1a0 [btrfs]
[ 360.834349] [<ffffffffa0338932>] btrfs_recover_log_trees+0x262/0x4d0 [btrfs]
[ 360.834440] [<ffffffffa0336240>] ? replay_one_extent+0x780/0x780 [btrfs]
[ 360.834526] [<ffffffffa02f4b9f>] open_ctree+0x17ef/0x2100 [btrfs]
[ 360.834604] [<ffffffffa02cb876>] btrfs_mount+0x766/0x900 [btrfs]
[ 360.834662] [<ffffffff81175bef>] mount_fs+0x3f/0x1b0
[ 360.834717] [<ffffffff811331b0>] ? __alloc_percpu+0x10/0x20
[ 360.834773] [<ffffffff8118fc53>] vfs_kern_mount+0x63/0x100
[ 360.834849] [<ffffffffa02cb28b>] btrfs_mount+0x17b/0x900 [btrfs]
[ 360.834905] [<ffffffff81132e8a>] ? pcpu_alloc+0x35a/0x660
[ 360.834960] [<ffffffff81175bef>] mount_fs+0x3f/0x1b0
[ 360.835014] [<ffffffff811331b0>] ? __alloc_percpu+0x10/0x20
[ 360.835069] [<ffffffff8118fc53>] vfs_kern_mount+0x63/0x100
[ 360.835123] [<ffffffff8119289c>] do_mount+0x20c/0xaf0
[ 360.835179] [<ffffffff81118eb9>] ? __get_free_pages+0x9/0x40
[ 360.835233] [<ffffffff81192555>] ? copy_mount_options+0x35/0x150
[ 360.835286] [<ffffffff81193497>] SyS_mount+0x97/0xf0
[ 360.835354] [<ffffffff81507ad2>] system_call_fastpath+0x12/0x17
[ 360.835412] INFO: task btrfs-transacti:435 blocked for more than 120 seconds.
[ 360.835465] Not tainted 3.18.9-gentoo #1
[ 360.835515] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs"
disables this message.
[ 360.835583] btrfs-transacti D ffff880427c11900 12424 435 2 0x00000000
[ 360.835701] ffff8800cfab7dc8 0000000000000046 ffff880410f01a10
0000000000011900
[ 360.835887] ffff8800cfab7fd8 0000000000011900 ffffffff81a16460
ffff880410f01a10
[ 360.836069] ffff8800cfab7dd8 ffff88040c7ab000 ffff8800cb554000
ffff8800cb5301a0
[ 360.836252] Call Trace:
[ 360.836315] [<ffffffff81504084>] schedule+0x24/0x60
[ 360.836403] [<ffffffffa02f73e5>]
btrfs_commit_transaction+0x275/0xa40 [btrfs]
[ 360.836479] [<ffffffff810882f0>] ? prepare_to_wait_event+0x100/0x100
[ 360.836565] [<ffffffffa02f305d>] transaction_kthread+0x1ad/0x240 [btrfs]
[ 360.836651] [<ffffffffa02f2eb0>] ?
btrfs_cleanup_transaction+0x530/0x530 [btrfs]
[ 360.836725] [<ffffffff8106aa04>] kthread+0xc4/0xe0
[ 360.836780] [<ffffffff8106a940>] ? kthread_create_on_node+0x190/0x190
[ 360.836834] [<ffffffff81507a2c>] ret_from_fork+0x7c/0xb0
[ 360.836891] [<ffffffff8106a940>] ? kthread_create_on_node+0x190/0x190
--
Rich
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