Re: [BUG] MD/RAID1 hung forever on freeze_array

[Jinpu Wang <jinpu.wang@profitbricks.com>]

On Mon, Nov 28, 2016 at 9:54 AM, Coly Li <colyli@suse.de> wrote:
> On 2016/11/28 下午4:24, Jinpu Wang wrote:
>> snip
>>>>>
>>>>> every time nr_pending is 1 bigger then (nr_queued + 1), so seems we
>>>>> forgot to increase nr_queued somewhere?
>>>>>
>>>>> I've noticed (commit ccfc7bf1f09d61)raid1: include bio_end_io_list in
>>>>> nr_queued to prevent freeze_array hang. Seems it fixed similar bug.
>>>>>
>>>>> Could you give your suggestion?
>>>>>
>>>> Sorry, forgot to mention kernel version is 4.4.28
>>>
>>> This commit is Cced to stable@vger.kernel.org for v4.3+, do you use a
>>> stable kernel or a distribution with 4.4.28 kernel ?
>>>
>>> Coly
>>>
>>>
>> Hi Coly,
>>
>> I'm using Debian8 with 4.4.28 kernel.
>
> Hi Jinpu,
>
> Is it possible for your to run a upstream kernel or vanilla kernel to
> test whether the issue still can be reproduced ? Then we can know
> whether it is an upstream bug or a distro issue.
>
> Thanks.
>
> Coly

Hi Coly,

I did run kernel 4.4.34 (I download from kernel.org), I can reproduce
the same bug.

I can also try latest 4.8 or 4.9 rc kernel, if you think it's necessary?

-- 
Jinpu Wang
Linux Kernel Developer

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