On Wed, 31 Jan 2007, Andrew Morton wrote:
> But usually none of that is necessary, because io_schedule() does all the
> work for you.
>
> err, this might help.
Well okay boot progresses further (maybe only on this boot) but system is
still hung.
Traces (this was a backtrace of all processes on the system. I removed
the irrelevant ones):
Delaying for 5 seconds...
All OS INIT slaves have reached rendezvous
Processes interrupted by INIT - 0 (cpu 0 task 0xa000000100b24000) 0 (cpu 1
task 0xe00000b003bd8000) 0 (cpu 2 task 0xe000023c38248000) 0 (cpu 3 task
0xe00000b003d00000) 0 (cpu 4 task 0xe000023c38258000) 0 (cpu 5 task
0xe00000b003d10000) 0 (cpu 6 task 0xe000023c38268000) 0 (cpu 7 task
0xe00000b003d20000) 0 (cpu 8 task 0xe000023c382e8000) 0 (cpu 9 task
0xe00000b003d30000) 0 (cpu 10 task 0xe000023c38380000) 0 (cpu 11 task
0xe00000b003d40000)
Backtrace of pid 1 (init)
Call Trace:
[<a000000100799bb0>] schedule+0x1bf0/0x1ec0
sp=e00000307bd178c0 bsp=e00000307bd11828
[<a000000100797b20>] __down+0x240/0x280
sp=e00000307bd179d0 bsp=e00000307bd117e8
[<a0000001003b8f10>] xfs_buf_iowait+0x50/0x80
sp=e00000307bd17a00 bsp=e00000307bd117c8
[<a0000001003bb120>] xfs_buf_iostart+0x1a0/0x1c0
sp=e00000307bd17a00 bsp=e00000307bd117a0
[<a0000001003bc140>] xfs_buf_read_flags+0xe0/0x160
sp=e00000307bd17a00 bsp=e00000307bd11768
[<a00000010039e490>] xfs_trans_read_buf+0x50/0x6a0
sp=e00000307bd17a00 bsp=e00000307bd11710
[<a0000001003420a0>] xfs_btree_read_bufl+0xe0/0x120
sp=e00000307bd17a00 bsp=e00000307bd116d0
[<a000000100334de0>] xfs_bmap_read_extents+0x2c0/0x7e0
sp=e00000307bd17a10 bsp=e00000307bd11658
[<a000000100376820>] xfs_iread_extents+0x160/0x1c0
sp=e00000307bd17a20 bsp=e00000307bd11618
[<a000000100330b90>] xfs_bmapi+0x430/0x33a0
sp=e00000307bd17a20 bsp=e00000307bd114c8
[<a00000010037d3e0>] xfs_iomap+0x3e0/0xb00
sp=e00000307bd17b60 bsp=e00000307bd11458
[<a0000001003c5aa0>] xfs_bmap+0x40/0x60
sp=e00000307bd17bb0 bsp=e00000307bd11410
[<a0000001003b4c30>] __xfs_get_blocks+0xd0/0x5c0
sp=e00000307bd17bb0 bsp=e00000307bd113a0
[<a0000001003b51c0>] xfs_get_blocks+0x40/0x60
sp=e00000307bd17bf0 bsp=e00000307bd11368
[<a0000001001b8d00>] __block_prepare_write+0x3e0/0xd20
sp=e00000307bd17bf0 bsp=e00000307bd112c8
[<a0000001001ba740>] block_prepare_write+0x40/0xa0
sp=e00000307bd17c10 bsp=e00000307bd11290
[<a0000001003b7af0>] xfs_vm_prepare_write+0x30/0x60
sp=e00000307bd17c10 bsp=e00000307bd11258
[<a000000100109290>] generic_file_buffered_write+0x3d0/0xda0
sp=e00000307bd17c10 bsp=e00000307bd11170
[<a0000001003c8100>] xfs_write+0xc60/0x1260
sp=e00000307bd17ca0 bsp=e00000307bd11088
[<a0000001003bed00>] xfs_file_aio_write+0x120/0x140
sp=e00000307bd17d10 bsp=e00000307bd11050
[<a000000100167ca0>] do_sync_write+0x180/0x200
sp=e00000307bd17d10 bsp=e00000307bd11018
[<a000000100169130>] vfs_write+0x1b0/0x340
sp=e00000307bd17e20 bsp=e00000307bd10fc0
[<a000000100169db0>] sys_write+0x70/0xe0
sp=e00000307bd17e20 bsp=e00000307bd10f48
[<a00000010000b360>] ia64_ret_from_syscall+0x0/0x20
sp=e00000307bd17e30 bsp=e00000307bd10f48
[<a000000000010620>] __kernel_syscall_via_break+0x0/0x20
sp=e00000307bd18000 bsp=e00000307bd10f48
Backtrace of pid 1006 (xfsbufd)
Call Trace:
[<a000000100799bb0>] schedule+0x1bf0/0x1ec0
sp=e00000301527fc00 bsp=e000003015278e38
[<a00000010079b5d0>] schedule_timeout+0x110/0x180
sp=e00000301527fd10 bsp=e000003015278e08
[<a00000010079b6d0>] schedule_timeout_interruptible+0x30/0x60
sp=e00000301527fd40 bsp=e000003015278de0
[<a0000001003bcf70>] xfsbufd+0x1b0/0x520
sp=e00000301527fd40 bsp=e000003015278d90
[<a0000001000d2ac0>] kthread+0x220/0x2a0
sp=e00000301527fd50 bsp=e000003015278d48
[<a000000100010a50>] kernel_thread_helper+0xd0/0x100
sp=e00000301527fe30 bsp=e000003015278d20
[<a000000100009140>] start_kernel_thread+0x20/0x40
sp=e00000301527fe30 bsp=e000003015278d20
Backtrace of pid 1007 (xfssyncd)
Call Trace:
[<a000000100799bb0>] schedule+0x1bf0/0x1ec0
sp=e00000307bdc7c00 bsp=e00000307bdc0e20
[<a00000010079b5d0>] schedule_timeout+0x110/0x180
sp=e00000307bdc7d10 bsp=e00000307bdc0de8
[<a00000010079b6d0>] schedule_timeout_interruptible+0x30/0x60
sp=e00000307bdc7d40 bsp=e00000307bdc0dc8
[<a0000001003c9910>] xfssyncd+0xb0/0x400
sp=e00000307bdc7d40 bsp=e00000307bdc0d90
[<a0000001000d2ac0>] kthread+0x220/0x2a0
sp=e00000307bdc7d50 bsp=e00000307bdc0d48
[<a000000100010a50>] kernel_thread_helper+0xd0/0x100
sp=e00000307bdc7e30 bsp=e00000307bdc0d20
[<a000000100009140>] start_kernel_thread+0x20/0x40
sp=e00000307bdc7e30 bsp=e00000307bdc0d20
Backtrace of pid 1063 (udevd)
Call Trace:
[<a000000100799bb0>] schedule+0x1bf0/0x1ec0
sp=e000003015e1f950 bsp=e000003015e18f78
[<a00000010079b500>] schedule_timeout+0x40/0x180
sp=e000003015e1fa60 bsp=e000003015e18f48
[<a000000100186f60>] do_select+0x360/0x840
sp=e000003015e1fa90 bsp=e000003015e18e68
[<a000000100187a50>] sys_select+0x610/0x9e0
sp=e000003015e1fce0 bsp=e000003015e18dc8
[<a00000010000b360>] ia64_ret_from_syscall+0x0/0x20
sp=e000003015e1fe30 bsp=e000003015e18dc8
[<a000000000010620>] __kernel_syscall_via_break+0x0/0x20
sp=e000003015e20000 bsp=e000003015e18dc8
Backtrace of pid 2372 (ifup)
Call Trace:
[<a000000100799bb0>] schedule+0x1bf0/0x1ec0
sp=e00000307a47fd00 bsp=e00000307a478e58
[<a0000001000aada0>] do_exit+0x1320/0x1380
sp=e00000307a47fe10 bsp=e00000307a478e08
[<a0000001000aaf40>] do_group_exit+0x140/0x160
sp=e00000307a47fe30 bsp=e00000307a478dc8
[<a0000001000aaf80>] sys_exit_group+0x20/0x40
sp=e00000307a47fe30 bsp=e00000307a478d70
[<a00000010000b360>] ia64_ret_from_syscall+0x0/0x20
sp=e00000307a47fe30 bsp=e00000307a478d70
[<a000000000010620>] __kernel_syscall_via_break+0x0/0x20
sp=e00000307a480000 bsp=e00000307a478d70
Backtrace of pid 2421 (startpar)
Call Trace:
[<a000000100799bb0>] schedule+0x1bf0/0x1ec0
sp=e00000307a507d00 bsp=e00000307a500e28
[<a0000001000aada0>] do_exit+0x1320/0x1380
sp=e00000307a507e10 bsp=e00000307a500dd0
[<a0000001000aaf40>] do_group_exit+0x140/0x160
sp=e00000307a507e30 bsp=e00000307a500d98
[<a0000001000aaf80>] sys_exit_group+0x20/0x40
sp=e00000307a507e30 bsp=e00000307a500d40
[<a00000010000b360>] ia64_ret_from_syscall+0x0/0x20
sp=e00000307a507e30 bsp=e00000307a500d40
[<a000000000010620>] __kernel_syscall_via_break+0x0/0x20
sp=e00000307a508000 bsp=e00000307a500d40
Backtrace of pid 2450 (boot.ldconfig)
Call Trace:
[<a000000100799bb0>] schedule+0x1bf0/0x1ec0
sp=e00000307a55fd00 bsp=e00000307a558e58
[<a0000001000aada0>] do_exit+0x1320/0x1380
sp=e00000307a55fe10 bsp=e00000307a558e08
[<a0000001000aaf40>] do_group_exit+0x140/0x160
sp=e00000307a55fe30 bsp=e00000307a558dc8
[<a0000001000aaf80>] sys_exit_group+0x20/0x40
sp=e00000307a55fe30 bsp=e00000307a558d70
[<a00000010000b360>] ia64_ret_from_syscall+0x0/0x20
sp=e00000307a55fe30 bsp=e00000307a558d70
[<a000000000010620>] __kernel_syscall_via_break+0x0/0x20
sp=e00000307a560000 bsp=e00000307a558d70
Backtrace of pid 2452 (startpar)
Call Trace:
[<a000000100799bb0>] schedule+0x1bf0/0x1ec0
sp=e00000307a5ffd00 bsp=e00000307a5f8e28
[<a0000001000aada0>] do_exit+0x1320/0x1380
sp=e00000307a5ffe10 bsp=e00000307a5f8dd0
[<a0000001000aaf40>] do_group_exit+0x140/0x160
sp=e00000307a5ffe30 bsp=e00000307a5f8d98
[<a0000001000aaf80>] sys_exit_group+0x20/0x40
sp=e00000307a5ffe30 bsp=e00000307a5f8d40
[<a00000010000b360>] ia64_ret_from_syscall+0x0/0x20
sp=e00000307a5ffe30 bsp=e00000307a5f8d40
[<a000000000010620>] __kernel_syscall_via_break+0x0/0x20
sp=e00000307a600000 bsp=e00000307a5f8d40
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