linux-kernel - Re: ANNOUNCE: mdadm 4.0 - A tool for managing md Soft RAID under Linux

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Date:   Mon, 13 Feb 2017 13:54:34 +0800
From:   zhilong <zlliu@...e.com>
To:     Jes Sorensen <jes.sorensen@...il.com>,
        Bruce Dubbs <bruce.dubbs@...il.com>,
        "Brown, Neil" <neilb@...e.com>
Cc:     Guoqing Jiang <gqjiang@...e.com>, Shaohua Li <shli@...nel.org>,
        "linux-raid@...r.kernel.org" <linux-raid@...r.kernel.org>,
        LKML <linux-kernel@...r.kernel.org>
Subject: Re: ANNOUNCE: mdadm 4.0 - A tool for managing md Soft RAID under
 Linux


On 02/13/2017 01:08 PM, zhilong wrote:
> Hi, Jes;
>
>
> On 01/13/2017 12:41 AM, Jes Sorensen wrote:
>> On 01/11/17 23:24, Guoqing Jiang wrote:
>>>
>>> On 01/12/2017 12:59 AM, Jes Sorensen wrote:
>>>> On 01/11/17 11:52, Shaohua Li wrote:
>>>>> On Tue, Jan 10, 2017 at 11:49:04AM -0600, Bruce Dubbs wrote:
>>>>>> Jes Sorensen wrote:
>>>>>>> I am pleased to announce the availability of
>>>>>>>       mdadm version 4.0
>>>>>>>
>>>>>>> It is available at the usual places:
>>>>>>> http://www.kernel.org/pub/linux/utils/raid/mdadm/
>>>>>>> and via git at
>>>>>>> git://git.kernel.org/pub/scm/utils/mdadm/mdadm.git
>>>>>>>       http://git.kernel.org/cgit/utils/mdadm/
>>>>>>>
>>>>>>> The update in major version number primarily indicates this is a
>>>>>>> release by it's new maintainer. In addition it contains a large 
>>>>>>> number
>>>>>>> of fixes in particular for IMSM RAID and clustered RAID 
>>>>>>> support.  In
>>>>>>> addition this release includes support for IMSM 4k sector drives,
>>>>>>> failfast and better documentation for journaled RAID.
>>>>>> Thank you for the new release.  Unfortunately I get 9 failures
>>>>>> running the
>>>>>> test suite:
>>>>>>
>>>>>> tests/00raid1...          FAILED
>>>>>> tests/07autoassemble...   FAILED
>>>>>> tests/07changelevels...   FAILED
>>>>>> tests/07revert-grow...    FAILED
>>>>>> tests/07revert-inplace... FAILED
>>>>>> tests/07testreshape5...   FAILED
>>>>>> tests/10ddf-fail-twice... FAILED
>>>>>> tests/20raid5journal...   FAILED
>>>>>> tests/10ddf-incremental-wrong-order...  FAILED
>>>>> Yep, several tests usually fail. It appears some checks aren't always
>>>>> good.  At
>>>>> least the 'check' function for reshape/resync isn't reliable in my
>>>>> test, I saw
>>>>> 07changelevelintr fails frequently.
>>>> That is my experience as well - some of them are affected by the 
>>>> kernel
>>>> version too. We probably need to look into making them more reliable.
>>> If possible, it could be a potential topic for lsf/mm raid 
>>> discussion as
>>> Coly suggested
>>> in previous mail.
>>>
>>> Is current test can run the test for different raid level, say, "./test
>>> --raidtype=raid1" could
>>> execute all the *r1* tests, does it make sense to do it if we don't
>>> support it now.
>> We could have a discussion about this at LSF/MM, if someone is willing
>> to sponsor getting it accepted and we can get the right people there.
>>
>> Note that the test suite also allows you to run all the 01 tests by
>> specifying ./test 01. I do like to see the test suite improved and made
>> more resilient.
> I'm sorry for my late response, I'm just back to work today from 
> vacation. In the past months, I learned and worked for cluster-md 
> feature,
> and I have draft one test suit for cluster-md feature. please refer to 
> https://github.com/zhilongliu/clustermd-autotest
> I'm very willing to do something for improving mdadm testing part, 
> also wanna improve cluster-md test suit, welcome all comments for it.
>
   I would keep making cluster-md test scripts more and more stable, and 
finally apply to integrate into mdadm test part. :-)

Best regards,
-Zhilong
>> Cheers,
>> Jes
>>
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>>
>
> Thanks very much,
> -Zhilong
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