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Re: linux-next 0112 tree breaks fs DAX

Started byXiong Zhou <xzhou@redhat.com>
First post2017-01-16 10:30 +0100
Last post2017-01-17 21:30 +0100
Articles 5 — 3 participants

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  Re: linux-next 0112 tree breaks fs DAX Xiong Zhou <xzhou@redhat.com> - 2017-01-16 10:30 +0100
    Re: linux-next 0112 tree breaks fs DAX Stephen Rothwell <sfr@canb.auug.org.au> - 2017-01-16 11:50 +0100
      Re: linux-next 0112 tree breaks fs DAX Dave Jiang <dave.jiang@intel.com> - 2017-01-17 17:10 +0100
        Re: linux-next 0112 tree breaks fs DAX Dave Jiang <dave.jiang@intel.com> - 2017-01-17 19:20 +0100
          Re: linux-next 0112 tree breaks fs DAX Dave Jiang <dave.jiang@intel.com> - 2017-01-17 21:30 +0100

#1559551 — Re: linux-next 0112 tree breaks fs DAX

FromXiong Zhou <xzhou@redhat.com>
Date2017-01-16 10:30 +0100
SubjectRe: linux-next 0112 tree breaks fs DAX
Message-ID<t0bLZ-6Q2-35@gated-at.bofh.it>
On Fri, Jan 13, 2017 at 06:16:41PM +0800, Xiong Zhou wrote:
> Hi,
> 
> These cases "hang" when testing with -o dax mount option:
> xfstests generic/030 generic/34{0,4,5,6} generic/198
> (maybe more)
> 
> The test programme holetest or aiodio keep running for a
> long time. It's killable, but it seems never return.
> 
> With both ext4 and xfs as fs.
> 
> Without -o dax mount option, cases pass in seconds.
> 
> 0111 tree passed the tests.
> 
> sh-4.2# git log --oneline next-20170111..next-20170112 fs/dax.c
> 0c9a7909dd13 mm, dax: change pmd_fault() to take only vmf parameter
> f8dbc198d4ea mm, dax: make pmd_fault() and friends be the same as fault()

0112 tree with above 2 commits reverted pass the tests.

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#1559625

FromStephen Rothwell <sfr@canb.auug.org.au>
Date2017-01-16 11:50 +0100
Message-ID<t0d1n-7E3-1@gated-at.bofh.it>
In reply to#1559551
Hi Xiong,

Just cc'ing Andrew.

On Mon, 16 Jan 2017 17:29:16 +0800 Xiong Zhou <xzhou@redhat.com> wrote:
>
> On Fri, Jan 13, 2017 at 06:16:41PM +0800, Xiong Zhou wrote:
> > Hi,
> > 
> > These cases "hang" when testing with -o dax mount option:
> > xfstests generic/030 generic/34{0,4,5,6} generic/198
> > (maybe more)
> > 
> > The test programme holetest or aiodio keep running for a
> > long time. It's killable, but it seems never return.
> > 
> > With both ext4 and xfs as fs.
> > 
> > Without -o dax mount option, cases pass in seconds.
> > 
> > 0111 tree passed the tests.
> > 
> > sh-4.2# git log --oneline next-20170111..next-20170112 fs/dax.c
> > 0c9a7909dd13 mm, dax: change pmd_fault() to take only vmf parameter
> > f8dbc198d4ea mm, dax: make pmd_fault() and friends be the same as fault()  
> 
> 0112 tree with above 2 commits reverted pass the tests.

-- 
Cheers,
Stephen Rothwell

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#1560730

FromDave Jiang <dave.jiang@intel.com>
Date2017-01-17 17:10 +0100
Message-ID<t0EuC-M4-25@gated-at.bofh.it>
In reply to#1559625
On 01/16/2017 03:45 AM, Stephen Rothwell wrote:
> Hi Xiong,
> 
> Just cc'ing Andrew.
> 
> On Mon, 16 Jan 2017 17:29:16 +0800 Xiong Zhou <xzhou@redhat.com> wrote:
>>
>> On Fri, Jan 13, 2017 at 06:16:41PM +0800, Xiong Zhou wrote:
>>> Hi,
>>>
>>> These cases "hang" when testing with -o dax mount option:
>>> xfstests generic/030 generic/34{0,4,5,6} generic/198
>>> (maybe more)
>>>
>>> The test programme holetest or aiodio keep running for a
>>> long time. It's killable, but it seems never return.
>>>
>>> With both ext4 and xfs as fs.
>>>
>>> Without -o dax mount option, cases pass in seconds.
>>>
>>> 0111 tree passed the tests.
>>>
>>> sh-4.2# git log --oneline next-20170111..next-20170112 fs/dax.c
>>> 0c9a7909dd13 mm, dax: change pmd_fault() to take only vmf parameter
>>> f8dbc198d4ea mm, dax: make pmd_fault() and friends be the same as fault()  
>>
>> 0112 tree with above 2 commits reverted pass the tests.
> 

Thanks. I will debug.

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#1560888

FromDave Jiang <dave.jiang@intel.com>
Date2017-01-17 19:20 +0100
Message-ID<t0Gwq-1Z2-23@gated-at.bofh.it>
In reply to#1560730

On 01/17/2017 09:05 AM, Dave Jiang wrote:
> On 01/16/2017 03:45 AM, Stephen Rothwell wrote:
>> Hi Xiong,
>>
>> Just cc'ing Andrew.
>>
>> On Mon, 16 Jan 2017 17:29:16 +0800 Xiong Zhou <xzhou@redhat.com> wrote:
>>>
>>> On Fri, Jan 13, 2017 at 06:16:41PM +0800, Xiong Zhou wrote:
>>>> Hi,
>>>>
>>>> These cases "hang" when testing with -o dax mount option:
>>>> xfstests generic/030 generic/34{0,4,5,6} generic/198
>>>> (maybe more)
>>>>
>>>> The test programme holetest or aiodio keep running for a
>>>> long time. It's killable, but it seems never return.
>>>>
>>>> With both ext4 and xfs as fs.
>>>>
>>>> Without -o dax mount option, cases pass in seconds.
>>>>
>>>> 0111 tree passed the tests.
>>>>
>>>> sh-4.2# git log --oneline next-20170111..next-20170112 fs/dax.c
>>>> 0c9a7909dd13 mm, dax: change pmd_fault() to take only vmf parameter
>>>> f8dbc198d4ea mm, dax: make pmd_fault() and friends be the same as fault()  
>>>
>>> 0112 tree with above 2 commits reverted pass the tests.
>>
> 
> Thanks. I will debug.
> 

Xiong,
I think I reproduced the issue, but only on the second commit
0c9a7909dd13 and not the first one f8dbc198d4ea. Can you please confirm
that "f8dbc198d4ea mm, dax: make pmd_fault() and friends be the same as
fault()" is ok or the failure starts with that? Thanks!

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#1560987

FromDave Jiang <dave.jiang@intel.com>
Date2017-01-17 21:30 +0100
Message-ID<t0Iye-3cj-13@gated-at.bofh.it>
In reply to#1560888
On 01/17/2017 11:13 AM, Dave Jiang wrote:
> 
> 
> On 01/17/2017 09:05 AM, Dave Jiang wrote:
>> On 01/16/2017 03:45 AM, Stephen Rothwell wrote:
>>> Hi Xiong,
>>>
>>> Just cc'ing Andrew.
>>>
>>> On Mon, 16 Jan 2017 17:29:16 +0800 Xiong Zhou <xzhou@redhat.com> wrote:
>>>>
>>>> On Fri, Jan 13, 2017 at 06:16:41PM +0800, Xiong Zhou wrote:
>>>>> Hi,
>>>>>
>>>>> These cases "hang" when testing with -o dax mount option:
>>>>> xfstests generic/030 generic/34{0,4,5,6} generic/198
>>>>> (maybe more)
>>>>>
>>>>> The test programme holetest or aiodio keep running for a
>>>>> long time. It's killable, but it seems never return.
>>>>>
>>>>> With both ext4 and xfs as fs.
>>>>>
>>>>> Without -o dax mount option, cases pass in seconds.
>>>>>
>>>>> 0111 tree passed the tests.
>>>>>
>>>>> sh-4.2# git log --oneline next-20170111..next-20170112 fs/dax.c
>>>>> 0c9a7909dd13 mm, dax: change pmd_fault() to take only vmf parameter
>>>>> f8dbc198d4ea mm, dax: make pmd_fault() and friends be the same as fault()  
>>>>
>>>> 0112 tree with above 2 commits reverted pass the tests.
>>>
>>
>> Thanks. I will debug.
>>
> 
> Xiong,
> I think I reproduced the issue, but only on the second commit
> 0c9a7909dd13 and not the first one f8dbc198d4ea. Can you please confirm
> that "f8dbc198d4ea mm, dax: make pmd_fault() and friends be the same as
> fault()" is ok or the failure starts with that? Thanks!

Actually nevermind. I am able to reproduce on the first commit now. Thanks.

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