From mboxrd@z Thu Jan  1 00:00:00 1970
From: Joe Landman <landman@scalableinformatics.com>
Subject: Re: sun x4500 soft lockup during raid creation
Date: Wed, 28 Jan 2009 16:33:42 -0500
Message-ID: <4980CF36.60106@scalableinformatics.com>
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To: Vladimir Ivashchenko <hazard@francoudi.com>
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Vladimir Ivashchenko wrote:

> Any stability assurances or workarounds are highly appreciated. :)
> 
> Jan 28 21:31:32 SunSTG kernel: BUG: soft lockup - CPU#0 stuck for 10s!

[...]

> Jan 28 21:31:32 SunSTG kernel:  [<f8d63562>] compute_parity6+0x21c/0x28a
> [raid456]
> Jan 28 21:31:32 SunSTG kernel:  [<f8d6452e>] handle_stripe+0xc8b/0x215e
> [raid456]
> Jan 28 21:31:32 SunSTG kernel:  [<c041fdb3>] enqueue_task+0x29/0x39
> Jan 28 21:31:32 SunSTG kernel:  [<c0420629>] try_to_wake_up+0x371/0x37b
> Jan 28 21:31:32 SunSTG kernel:  [<c041edec>] __wake_up_common+0x2f/0x53
> Jan 28 21:31:32 SunSTG kernel:  [<c041fbe6>] __wake_up+0x2a/0x3d
> Jan 28 21:31:32 SunSTG kernel:  [<f8d61744>] release_stripe+0x21/0x2e
> [raid456]
> Jan 28 21:31:33 SunSTG kernel:  [<f8d65b0c>] raid5d+0x10b/0x130
> [raid456]
> Jan 28 21:31:33 SunSTG kernel:  [<c059aca8>] md_thread+0xdf/0xf5
> Jan 28 21:31:33 SunSTG kernel:  [<c0436347>] autoremove_wake_function
> +0x0/0x2d
> Jan 28 21:31:33 SunSTG kernel:  [<c059abc9>] md_thread+0x0/0xf5
> Jan 28 21:31:33 SunSTG kernel:  [<c0436285>] kthread+0xc0/0xeb
> Jan 28 21:31:33 SunSTG kernel:  [<c04361c5>] kthread+0x0/0xeb
> Jan 28 21:31:33 SunSTG kernel:  [<c0405c3b>] kernel_thread_helper
> +0x7/0x10

Are you able to update the kernel to something more modern, or are you 
required to keep the kernel at the 2.6.18 level?  Out of curiousity, 
could you post the output of

	cat /proc/interrupts


-- 
Joseph Landman, Ph.D
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