Hi,
I am encountering hang of XFS filesystem, please find the logs as given below:
INFO: task usb_mount:1858 blocked for more than 120 seconds.
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
usb_mount D [84a42440] 8032d62c 0 1858 1816 (user thread)
Stack : 00000107 00000000 85e7be80 00030002 84a425c8 8032d62c 7fffffff 84a42440
00000002 8496e200 00000001 00000000 85e7bf00 85e7bef8 7fa2f2e0 8032d62c
00000001 801d69a8 85e7bd40 801d6b34 85e7bd4c 8032dc6c 00000000 801dbc80
85e7be80 864315a8 8662c980 00000001 00000742 00000000 00000000 84b85800
85e7bd90 801d6cc0 7fffffff 84a42440 00000002 8032ee74 00000081 804158a0
...
Call Trace:
[<8032d574>] __schedule+0x618/0x6b8 from[<8032d62c>] schedule+0x18/0x3c
[<8032d62c>] schedule+0x18/0x3c from[<8032dc6c>] schedule_timeout+0x2c/0x1c0
[<8032dc6c>] schedule_timeout+0x2c/0x1c0 from[<8032ee74>] __down+0x8c/0xdc
[<8032ee74>] __down+0x8c/0xdc from[<8004500c>] down+0x40/0x88
[<8004500c>] down+0x40/0x88 from[<801ca838>] xfs_buf_lock+0xcc/0x15c
[<801ca838>] xfs_buf_lock+0xcc/0x15c from[<801b71a0>] xfs_getsb+0x38/0x54
[<801b71a0>] xfs_getsb+0x38/0x54 from[<801d64a8>] xfs_sync_fsdata+0x7c/0x154
[<801d64a8>] xfs_sync_fsdata+0x7c/0x154 from[<801d7284>] xfs_quiesce_data+0x34/0x60
[<801d7284>] xfs_quiesce_data+0x34/0x60 from[<801d3514>] xfs_fs_sync_fs+0x30/0xec
[<801d3514>] xfs_fs_sync_fs+0x30/0xec from[<800ba09c>] __fsync_super+0xa4/0xc8
[<800ba09c>] __fsync_super+0xa4/0xc8 from[<800ba0d4>] fsync_super+0x14/0x28
[<800ba0d4>] fsync_super+0x14/0x28 from[<800ba4a0>] generic_shutdown_super+0x34/0x190
[<800ba4a0>] generic_shutdown_super+0x34/0x190 from[<800ba654>] kill_block_super+0x58/0x80
[<800ba654>] kill_block_super+0x58/0x80 from[<800bac6c>] deactivate_super+0x7c/0x110
[<800bac6c>] deactivate_super+0x7c/0x110 from[<800d2bbc>] sys_umount+0x310/0x358
[<800d2bbc>] sys_umount+0x310/0x358 from[<8000ff44>] stack_done+0x20/0x3c
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
usb_mount D [84a42440] 8032d62c 0 1858 1816 (user thread)
Stack : 00000107 00000000 85e7be80 00030002 84a425c8 8032d62c 7fffffff 84a42440
00000002 8496e200 00000001 00000000 85e7bf00 85e7bef8 7fa2f2e0 8032d62c
00000001 801d69a8 85e7bd40 801d6b34 85e7bd4c 8032dc6c 00000000 801dbc80
85e7be80 864315a8 8662c980 00000001 00000742 00000000 00000000 84b85800
85e7bd90 801d6cc0 7fffffff 84a42440 00000002 8032ee74 00000081 804158a0
...
Call Trace:
[<8032d574>] __schedule+0x618/0x6b8 from[<8032d62c>] schedule+0x18/0x3c
[<8032d62c>] schedule+0x18/0x3c from[<8032dc6c>] schedule_timeout+0x2c/0x1c0
[<8032dc6c>] schedule_timeout+0x2c/0x1c0 from[<8032ee74>] __down+0x8c/0xdc
[<8032ee74>] __down+0x8c/0xdc from[<8004500c>] down+0x40/0x88
[<8004500c>] down+0x40/0x88 from[<801ca838>] xfs_buf_lock+0xcc/0x15c
[<801ca838>] xfs_buf_lock+0xcc/0x15c from[<801b71a0>] xfs_getsb+0x38/0x54
[<801b71a0>] xfs_getsb+0x38/0x54 from[<801d64a8>] xfs_sync_fsdata+0x7c/0x154
[<801d64a8>] xfs_sync_fsdata+0x7c/0x154 from[<801d7284>] xfs_quiesce_data+0x34/0x60
[<801d7284>] xfs_quiesce_data+0x34/0x60 from[<801d3514>] xfs_fs_sync_fs+0x30/0xec
[<801d3514>] xfs_fs_sync_fs+0x30/0xec from[<800ba09c>] __fsync_super+0xa4/0xc8
[<800ba09c>] __fsync_super+0xa4/0xc8 from[<800ba0d4>] fsync_super+0x14/0x28
[<800ba0d4>] fsync_super+0x14/0x28 from[<800ba4a0>] generic_shutdown_super+0x34/0x190
[<800ba4a0>] generic_shutdown_super+0x34/0x190 from[<800ba654>] kill_block_super+0x58/0x80
[<800ba654>] kill_block_super+0x58/0x80 from[<800bac6c>] deactivate_super+0x7c/0x110
[<800bac6c>] deactivate_super+0x7c/0x110 from[<800d2bbc>] sys_umount+0x310/0x358
[<800d2bbc>] sys_umount+0x310/0x358 from[<8000ff44>] stack_done+0x20/0x3c
After reboot it works fine, but during this state XFS does not works no operation.
Thanks,
Amit Sahrawat
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