Re: Array 'freezes' for some time after large writes?

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Hrm, I've never seen that kernel message.  I don't think any of my
freezes have lasted for up to 120 seconds though (my drives are half
as big -- might matter?)  It looks like we've both got WD drives --
and we both have nvidia 9500gt's as well.  Are you running the nvidia
binary drivers, or noveau? (It seems like it wouldn't matter
especially as, at least on my system, they don't share an interrupt or
anything, but I hate to ignore any hardware that we both have the same
of). I did move to 2.6.33 for some time, but that didn't change the
behaviour.

Jim


On 30 March 2010 13:05, Mark Knecht <markknecht@xxxxxxxxx> wrote:
> On Tue, Mar 30, 2010 at 10:47 AM, Jim Duchek <jim.duchek@xxxxxxxxx> wrote:
> <SNIP>
>>  You're having this happen even if the disk in question is not in an
>> array?  If so perhaps it's an SATA issue and not a RAID one, and we
>> should move this discussion accordingly.
>
> Yes, in my case the delays are so long - sometimes 2 or 3 minutes -
> that when I tried to build the system using RAID1 I got this kernel
> bug in dmesg. It's jsut info - not a real failure - but because it's
> talking about long delays I gave up on RAID and tried a standard
> single drive build. Turns out that it has (I think...) nothing to do
> with RAID at all. you'll not that there are instructions for turning
> the message off but I've not tried them. I intend to do a parallel
> RAID1 build on this machine and be able to test both RAID vs non-RAID.
>
> - Mark
>
> INFO: task kjournald:17466 blocked for more than 120 seconds.
> "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
> kjournald     D ffff8800280bbe00     0 17466      2 0x00000000
>  ffff8801adf9d890 0000000000000046 0000000000000000 0000000000000000
>  ffff8801adcbde44 0000000000004000 000000000000fe00 000000000000c878
>  0000000800000050 ffff88017a99aa40 ffff8801af90a150 ffff8801adf9db08
> Call Trace:
>  [<ffffffff812dd063>] ? md_make_request+0xb6/0xf1
>  [<ffffffff8109c248>] ? sync_buffer+0x0/0x40
>  [<ffffffff8137a4fc>] ? io_schedule+0x2d/0x3a
>  [<ffffffff8109c283>] ? sync_buffer+0x3b/0x40
>  [<ffffffff8137a879>] ? __wait_on_bit+0x41/0x70
>  [<ffffffff8109c248>] ? sync_buffer+0x0/0x40
>  [<ffffffff8137a913>] ? out_of_line_wait_on_bit+0x6b/0x77
>  [<ffffffff810438b2>] ? wake_bit_function+0x0/0x23
>  [<ffffffff8109c637>] ? sync_dirty_buffer+0x72/0xaa
>  [<ffffffff81131b8e>] ? journal_commit_transaction+0xa74/0xde2
>  [<ffffffff8103abcc>] ? lock_timer_base+0x26/0x4b
>  [<ffffffff81043884>] ? autoremove_wake_function+0x0/0x2e
>  [<ffffffff81134804>] ? kjournald+0xe3/0x206
>  [<ffffffff81043884>] ? autoremove_wake_function+0x0/0x2e
>  [<ffffffff81134721>] ? kjournald+0x0/0x206
>  [<ffffffff81043591>] ? kthread+0x8b/0x93
>  [<ffffffff8100bd3a>] ? child_rip+0xa/0x20
>  [<ffffffff81043506>] ? kthread+0x0/0x93
>  [<ffffffff8100bd30>] ? child_rip+0x0/0x20
> livecd ~ #
>
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