notify_deviceid_type4

notify_deviceid_type4

[Marc Eshel]

The spec defines notify_deviceid_type4 as:

20.12.1.  ARGUMENT
   /*
    * Device notification types.
    */
   enum notify_deviceid_type4 {
           NOTIFY_DEVICEID4_CHANGE = 1,
           NOTIFY_DEVICEID4_DELETE = 2
   };


but the Linux code in nfs4.h has, is that going to be fixed?

enum pnfs_notify_deviceid_type4 {
        NOTIFY_DEVICEID4_CHANGE = 1 << 1,
        NOTIFY_DEVICEID4_DELETE = 1 << 2,
};

Re: notify_deviceid_type4

[Benny Halevy]

On 2012-12-01 07:54, Marc Eshel wrote:
> The spec defines notify_deviceid_type4 as:
> 
> 20.12.1.  ARGUMENT
>    /*
>     * Device notification types.
>     */
>    enum notify_deviceid_type4 {
>            NOTIFY_DEVICEID4_CHANGE = 1,
>            NOTIFY_DEVICEID4_DELETE = 2
>    };
> 
> 
> but the Linux code in nfs4.h has, is that going to be fixed?
> 
> enum pnfs_notify_deviceid_type4 {
>         NOTIFY_DEVICEID4_CHANGE = 1 << 1,
>         NOTIFY_DEVICEID4_DELETE = 1 << 2,
> };

notify_deviceid_type4 specifies bit numbers same as notify_type4
It seems to me like the definition in nfs4.h is correct.

Benny

> 
> --
> To unsubscribe from this list: send the line "unsubscribe linux-nfs" in
> the body of a message to majordomo@vger.kernel.org
> More majordomo info at  http://vger.kernel.org/majordomo-info.html
> 

Re: notify_deviceid_type4

[Marc Eshel]

I am not sure what you are saying, I am showing the definition from the 
spec. that show NOTIFY_DEVICEID4_CHANGE = 1, and nfs4.h has it as (1<< 1) 
which is not 1, it is 2.
Marc.

Benny Halevy <bhalevy@tonian.com> wrote on 12/09/2012 01:42:47 AM:

> From: Benny Halevy <bhalevy@tonian.com>
> To: Marc Eshel/Almaden/IBM@IBMUS, 
> Cc: Trond Myklebust <Trond.Myklebust@netapp.com>, "J. Bruce Fields" 
> <bfields@redhat.com>, linux-nfs-owner@vger.kernel.org, linux-
> nfs@vger.kernel.org
> Date: 12/09/2012 01:44 AM
> Subject: Re: notify_deviceid_type4
> 
> On 2012-12-01 07:54, Marc Eshel wrote:
> > The spec defines notify_deviceid_type4 as:
> > 
> > 20.12.1.  ARGUMENT
> >    /*
> >     * Device notification types.
> >     */
> >    enum notify_deviceid_type4 {
> >            NOTIFY_DEVICEID4_CHANGE = 1,
> >            NOTIFY_DEVICEID4_DELETE = 2
> >    };
> > 
> > 
> > but the Linux code in nfs4.h has, is that going to be fixed?
> > 
> > enum pnfs_notify_deviceid_type4 {
> >         NOTIFY_DEVICEID4_CHANGE = 1 << 1,
> >         NOTIFY_DEVICEID4_DELETE = 1 << 2,
> > };
> 
> notify_deviceid_type4 specifies bit numbers same as notify_type4
> It seems to me like the definition in nfs4.h is correct.
> 
> Benny
> 
> > 
> > --
> > To unsubscribe from this list: send the line "unsubscribe linux-nfs" 
in
> > the body of a message to majordomo@vger.kernel.org
> > More majordomo info at  http://vger.kernel.org/majordomo-info.html
> > 
> 

Re: notify_deviceid_type4

[Marc Eshel]

Can you provide with the spec information that supports your 
interpretation?
Marc.



From:   Benny Halevy <bhalevy@tonian.com>
To:     Marc Eshel/Almaden/IBM@IBMUS, 
Cc:     linux-nfs-owner@vger.kernel.org, Trond Myklebust 
<trond.myklebust@netapp.com>, linux-nfs@vger.kernel.org, "J. Bruce Fields" 
<bfields@redhat.com>
Date:   12/09/2012 09:50 AM
Subject:        Re: notify_deviceid_type4



The enum values in the spec correspond to bit _numbers_ in the bitmap, not 
to bitmasks.
On Dec 9, 2012 6:43 PM, "Marc Eshel" <eshel@us.ibm.com> wrote:
I am not sure what you are saying, I am showing the definition from the
spec. that show NOTIFY_DEVICEID4_CHANGE = 1, and nfs4.h has it as (1<< 1)
which is not 1, it is 2.
Marc.

Benny Halevy <bhalevy@tonian.com> wrote on 12/09/2012 01:42:47 AM:

> From: Benny Halevy <bhalevy@tonian.com>
> To: Marc Eshel/Almaden/IBM@IBMUS,
> Cc: Trond Myklebust <Trond.Myklebust@netapp.com>, "J. Bruce Fields"
> <bfields@redhat.com>, linux-nfs-owner@vger.kernel.org, linux-
> nfs@vger.kernel.org
> Date: 12/09/2012 01:44 AM
> Subject: Re: notify_deviceid_type4
>
> On 2012-12-01 07:54, Marc Eshel wrote:
> > The spec defines notify_deviceid_type4 as:
> >
> > 20.12.1.  ARGUMENT
> >    /*
> >     * Device notification types.
> >     */
> >    enum notify_deviceid_type4 {
> >            NOTIFY_DEVICEID4_CHANGE = 1,
> >            NOTIFY_DEVICEID4_DELETE = 2
> >    };
> >
> >
> > but the Linux code in nfs4.h has, is that going to be fixed?
> >
> > enum pnfs_notify_deviceid_type4 {
> >         NOTIFY_DEVICEID4_CHANGE = 1 << 1,
> >         NOTIFY_DEVICEID4_DELETE = 1 << 2,
> > };
>
> notify_deviceid_type4 specifies bit numbers same as notify_type4
> It seems to me like the definition in nfs4.h is correct.
>
> Benny
>
> >
> > --
> > To unsubscribe from this list: send the line "unsubscribe linux-nfs"
in
> > the body of a message to majordomo@vger.kernel.org
> > More majordomo info at  http://vger.kernel.org/majordomo-info.html
> >
>

Re: notify_deviceid_type4

[Marc Eshel]

So you are saying it should be:

enum pnfs_notify_deviceid_type4 {
         NOTIFY_DEVICEID4_CHANGE = 1 << 0,
         NOTIFY_DEVICEID4_DELETE = 1 << 1,
};



From:   Benny Halevy <bhalevy@tonian.com>
To:     Marc Eshel/Almaden/IBM@IBMUS, 
Cc:     linux-nfs-owner@vger.kernel.org, NFS list 
<linux-nfs@vger.kernel.org>, "J. Bruce Fields" <bfields@redhat.com>, Trond 
Myklebust <trond.myklebust@netapp.com>
Date:   12/09/2012 11:54 AM
Subject:        Re: notify_deviceid_type4



I'm not sure if and whete that's saud explicitly but another example to 
support that inrerpretation are the values of notify_type4 that apply to 
the same bitmap that too are defined as sequential numbers (though zero 
based) and not as single bit masks.
Benny
On Dec 9, 2012 8:05 PM, "Marc Eshel" <eshel@us.ibm.com> wrote:
Can you provide with the spec information that supports your
interpretation?
Marc.



From:   Benny Halevy <bhalevy@tonian.com>
To:     Marc Eshel/Almaden/IBM@IBMUS,
Cc:     linux-nfs-owner@vger.kernel.org, Trond Myklebust
<trond.myklebust@netapp.com>, linux-nfs@vger.kernel.org, "J. Bruce Fields"
<bfields@redhat.com>
Date:   12/09/2012 09:50 AM
Subject:        Re: notify_deviceid_type4



The enum values in the spec correspond to bit _numbers_ in the bitmap, not
to bitmasks.
On Dec 9, 2012 6:43 PM, "Marc Eshel" <eshel@us.ibm.com> wrote:
I am not sure what you are saying, I am showing the definition from the
spec. that show NOTIFY_DEVICEID4_CHANGE = 1, and nfs4.h has it as (1<< 1)
which is not 1, it is 2.
Marc.

Benny Halevy <bhalevy@tonian.com> wrote on 12/09/2012 01:42:47 AM:

> From: Benny Halevy <bhalevy@tonian.com>
> To: Marc Eshel/Almaden/IBM@IBMUS,
> Cc: Trond Myklebust <Trond.Myklebust@netapp.com>, "J. Bruce Fields"
> <bfields@redhat.com>, linux-nfs-owner@vger.kernel.org, linux-
> nfs@vger.kernel.org
> Date: 12/09/2012 01:44 AM
> Subject: Re: notify_deviceid_type4
>
> On 2012-12-01 07:54, Marc Eshel wrote:
> > The spec defines notify_deviceid_type4 as:
> >
> > 20.12.1.  ARGUMENT
> >    /*
> >     * Device notification types.
> >     */
> >    enum notify_deviceid_type4 {
> >            NOTIFY_DEVICEID4_CHANGE = 1,
> >            NOTIFY_DEVICEID4_DELETE = 2
> >    };
> >
> >
> > but the Linux code in nfs4.h has, is that going to be fixed?
> >
> > enum pnfs_notify_deviceid_type4 {
> >         NOTIFY_DEVICEID4_CHANGE = 1 << 1,
> >         NOTIFY_DEVICEID4_DELETE = 1 << 2,
> > };
>
> notify_deviceid_type4 specifies bit numbers same as notify_type4
> It seems to me like the definition in nfs4.h is correct.
>
> Benny
>
> >
> > --
> > To unsubscribe from this list: send the line "unsubscribe linux-nfs"
in
> > the body of a message to majordomo@vger.kernel.org
> > More majordomo info at  http://vger.kernel.org/majordomo-info.html
> >
>

Re: notify_deviceid_type4

[Marc Eshel]

I don't see that we are following notify_type4 either. notify_type4 is 
enum 0,1,2,3,.... so notify_deviceid_type4 should be enum 0,1 or 1,2 since 
it was already defined this way in the spec. Defining it as 2, 4 make no 
sense if it is a bit number, way skip bits?. The use of shift is used for 
bit mask which you claim it is not. 
Marc.



From:   Benny Halevy <bhalevy@tonian.com>
To:     Marc Eshel/Almaden/IBM@IBMUS, 
Cc:     linux-nfs-owner@vger.kernel.org, NFS list 
<linux-nfs@vger.kernel.org>, "J. Bruce Fields" <bfields@redhat.com>, Trond 
Myklebust <trond.myklebust@netapp.com>
Date:   12/09/2012 11:54 AM
Subject:        Re: notify_deviceid_type4



I'm not sure if and whete that's saud explicitly but another example to 
support that inrerpretation are the values of notify_type4 that apply to 
the same bitmap that too are defined as sequential numbers (though zero 
based) and not as single bit masks.
Benny
On Dec 9, 2012 8:05 PM, "Marc Eshel" <eshel@us.ibm.com> wrote:
Can you provide with the spec information that supports your
interpretation?
Marc.



From:   Benny Halevy <bhalevy@tonian.com>
To:     Marc Eshel/Almaden/IBM@IBMUS,
Cc:     linux-nfs-owner@vger.kernel.org, Trond Myklebust
<trond.myklebust@netapp.com>, linux-nfs@vger.kernel.org, "J. Bruce Fields"
<bfields@redhat.com>
Date:   12/09/2012 09:50 AM
Subject:        Re: notify_deviceid_type4



The enum values in the spec correspond to bit _numbers_ in the bitmap, not
to bitmasks.
On Dec 9, 2012 6:43 PM, "Marc Eshel" <eshel@us.ibm.com> wrote:
I am not sure what you are saying, I am showing the definition from the
spec. that show NOTIFY_DEVICEID4_CHANGE = 1, and nfs4.h has it as (1<< 1)
which is not 1, it is 2.
Marc.

Benny Halevy <bhalevy@tonian.com> wrote on 12/09/2012 01:42:47 AM:

> From: Benny Halevy <bhalevy@tonian.com>
> To: Marc Eshel/Almaden/IBM@IBMUS,
> Cc: Trond Myklebust <Trond.Myklebust@netapp.com>, "J. Bruce Fields"
> <bfields@redhat.com>, linux-nfs-owner@vger.kernel.org, linux-
> nfs@vger.kernel.org
> Date: 12/09/2012 01:44 AM
> Subject: Re: notify_deviceid_type4
>
> On 2012-12-01 07:54, Marc Eshel wrote:
> > The spec defines notify_deviceid_type4 as:
> >
> > 20.12.1.  ARGUMENT
> >    /*
> >     * Device notification types.
> >     */
> >    enum notify_deviceid_type4 {
> >            NOTIFY_DEVICEID4_CHANGE = 1,
> >            NOTIFY_DEVICEID4_DELETE = 2
> >    };
> >
> >
> > but the Linux code in nfs4.h has, is that going to be fixed?
> >
> > enum pnfs_notify_deviceid_type4 {
> >         NOTIFY_DEVICEID4_CHANGE = 1 << 1,
> >         NOTIFY_DEVICEID4_DELETE = 1 << 2,
> > };
>
> notify_deviceid_type4 specifies bit numbers same as notify_type4
> It seems to me like the definition in nfs4.h is correct.
>
> Benny
>
> >
> > --
> > To unsubscribe from this list: send the line "unsubscribe linux-nfs"
in
> > the body of a message to majordomo@vger.kernel.org
> > More majordomo info at  http://vger.kernel.org/majordomo-info.html
> >
>

Re: notify_deviceid_type4

[Benny Halevy]

On 2012-12-09 20:05, Marc Eshel wrote:
> Can you provide with the spec information that supports your 
> interpretation?

Marc, section 18.40.3. says the following:

   The notification mask is
   composed in the same manner as the bitmap for file attributes
   (Section 3.3.7).  The numbers of bit positions are listed in the
   notify_device_type4 enumeration type (Section 20.12).

The linux implementation chose to reflect the bit masks in the header
file rather than the bit numbers but it's clear the masks should equal
2 (1<<1) and 4 (1<<2) rather than 1 and 2.

For clarity, I'm OK with a patch that fixes the definition in nfs4.h to:

enum pnfs_notify_deviceid_type4 {
         NOTIFY_DEVICEID4_CHANGE = 1,
         NOTIFY_DEVICEID4_DELETE = 2,
};

But every place these values are currently used verbatim should be fixed
respectively to use the shifted value, e.g. (1 << NOTIFY_DEVICEID4_CHANGE).

Benny

> Marc.
> 
> 
> 
> From:   Benny Halevy <bhalevy@tonian.com>
> To:     Marc Eshel/Almaden/IBM@IBMUS, 
> Cc:     linux-nfs-owner@vger.kernel.org, Trond Myklebust 
> <trond.myklebust@netapp.com>, linux-nfs@vger.kernel.org, "J. Bruce Fields" 
> <bfields@redhat.com>
> Date:   12/09/2012 09:50 AM
> Subject:        Re: notify_deviceid_type4
> 
> 
> 
> The enum values in the spec correspond to bit _numbers_ in the bitmap, not 
> to bitmasks.
> On Dec 9, 2012 6:43 PM, "Marc Eshel" <eshel@us.ibm.com> wrote:
> I am not sure what you are saying, I am showing the definition from the
> spec. that show NOTIFY_DEVICEID4_CHANGE = 1, and nfs4.h has it as (1<< 1)
> which is not 1, it is 2.
> Marc.
> 
> Benny Halevy <bhalevy@tonian.com> wrote on 12/09/2012 01:42:47 AM:
> 
>> From: Benny Halevy <bhalevy@tonian.com>
>> To: Marc Eshel/Almaden/IBM@IBMUS,
>> Cc: Trond Myklebust <Trond.Myklebust@netapp.com>, "J. Bruce Fields"
>> <bfields@redhat.com>, linux-nfs-owner@vger.kernel.org, linux-
>> nfs@vger.kernel.org
>> Date: 12/09/2012 01:44 AM
>> Subject: Re: notify_deviceid_type4
>>
>> On 2012-12-01 07:54, Marc Eshel wrote:
>>> The spec defines notify_deviceid_type4 as:
>>>
>>> 20.12.1.  ARGUMENT
>>>    /*
>>>     * Device notification types.
>>>     */
>>>    enum notify_deviceid_type4 {
>>>            NOTIFY_DEVICEID4_CHANGE = 1,
>>>            NOTIFY_DEVICEID4_DELETE = 2
>>>    };
>>>
>>>
>>> but the Linux code in nfs4.h has, is that going to be fixed?
>>>
>>> enum pnfs_notify_deviceid_type4 {
>>>         NOTIFY_DEVICEID4_CHANGE = 1 << 1,
>>>         NOTIFY_DEVICEID4_DELETE = 1 << 2,
>>> };
>>
>> notify_deviceid_type4 specifies bit numbers same as notify_type4
>> It seems to me like the definition in nfs4.h is correct.
>>
>> Benny
>>
>>>
>>> --
>>> To unsubscribe from this list: send the line "unsubscribe linux-nfs"
> in
>>> the body of a message to majordomo@vger.kernel.org
>>> More majordomo info at  http://vger.kernel.org/majordomo-info.html
>>>
>>
> 
> 

-- 
Benny Halevy
CTO, Tonian Inc.

Tel: +972-54-802-8340
bhalevy@tonian.com

Re: notify_deviceid_type4

[Marc Eshel]

That sound like the correct thing to do, I which we have the agreement 
from all implementations to make sure we all do the same thing. I will 
copy the ietf mailing list to see that there are no objections. I guess we 
will find out in the next cton what breaks.
Marc.

Benny Halevy <bhalevy@tonian.com> wrote on 12/11/2012 03:20:50 AM:

> From: Benny Halevy <bhalevy@tonian.com>
> To: Marc Eshel/Almaden/IBM@IBMUS, 
> Cc: "J. Bruce Fields" <bfields@redhat.com>, linux-
> nfs@vger.kernel.org, Trond Myklebust <trond.myklebust@netapp.com>, 
> Trond Myklebust <trond.myklebust@netapp.com>
> Date: 12/11/2012 03:21 AM
> Subject: Re: notify_deviceid_type4
> 
> On 2012-12-09 20:05, Marc Eshel wrote:
> > Can you provide with the spec information that supports your 
> > interpretation?
> 
> Marc, section 18.40.3. says the following:
> 
>    The notification mask is
>    composed in the same manner as the bitmap for file attributes
>    (Section 3.3.7).  The numbers of bit positions are listed in the
>    notify_device_type4 enumeration type (Section 20.12).
> 
> The linux implementation chose to reflect the bit masks in the header
> file rather than the bit numbers but it's clear the masks should equal
> 2 (1<<1) and 4 (1<<2) rather than 1 and 2.
> 
> For clarity, I'm OK with a patch that fixes the definition in nfs4.h to:
> 
> enum pnfs_notify_deviceid_type4 {
>          NOTIFY_DEVICEID4_CHANGE = 1,
>          NOTIFY_DEVICEID4_DELETE = 2,
> };
> 
> But every place these values are currently used verbatim should be fixed
> respectively to use the shifted value, e.g. (1 << 
NOTIFY_DEVICEID4_CHANGE).
> 
> Benny
> 
> > Marc.
> > 
> > 
> > 
> > From:   Benny Halevy <bhalevy@tonian.com>
> > To:     Marc Eshel/Almaden/IBM@IBMUS, 
> > Cc:     linux-nfs-owner@vger.kernel.org, Trond Myklebust 
> > <trond.myklebust@netapp.com>, linux-nfs@vger.kernel.org, "J. Bruce 
Fields" 
> > <bfields@redhat.com>
> > Date:   12/09/2012 09:50 AM
> > Subject:        Re: notify_deviceid_type4
> > 
> > 
> > 
> > The enum values in the spec correspond to bit _numbers_ in the bitmap, 
not 
> > to bitmasks.
> > On Dec 9, 2012 6:43 PM, "Marc Eshel" <eshel@us.ibm.com> wrote:
> > I am not sure what you are saying, I am showing the definition from 
the
> > spec. that show NOTIFY_DEVICEID4_CHANGE = 1, and nfs4.h has it as (1<< 
1)
> > which is not 1, it is 2.
> > Marc.
> > 
> > Benny Halevy <bhalevy@tonian.com> wrote on 12/09/2012 01:42:47 AM:
> > 
> >> From: Benny Halevy <bhalevy@tonian.com>
> >> To: Marc Eshel/Almaden/IBM@IBMUS,
> >> Cc: Trond Myklebust <Trond.Myklebust@netapp.com>, "J. Bruce Fields"
> >> <bfields@redhat.com>, linux-nfs-owner@vger.kernel.org, linux-
> >> nfs@vger.kernel.org
> >> Date: 12/09/2012 01:44 AM
> >> Subject: Re: notify_deviceid_type4
> >>
> >> On 2012-12-01 07:54, Marc Eshel wrote:
> >>> The spec defines notify_deviceid_type4 as:
> >>>
> >>> 20.12.1.  ARGUMENT
> >>>    /*
> >>>     * Device notification types.
> >>>     */
> >>>    enum notify_deviceid_type4 {
> >>>            NOTIFY_DEVICEID4_CHANGE = 1,
> >>>            NOTIFY_DEVICEID4_DELETE = 2
> >>>    };
> >>>
> >>>
> >>> but the Linux code in nfs4.h has, is that going to be fixed?
> >>>
> >>> enum pnfs_notify_deviceid_type4 {
> >>>         NOTIFY_DEVICEID4_CHANGE = 1 << 1,
> >>>         NOTIFY_DEVICEID4_DELETE = 1 << 2,
> >>> };
> >>
> >> notify_deviceid_type4 specifies bit numbers same as notify_type4
> >> It seems to me like the definition in nfs4.h is correct.
> >>
> >> Benny
> >>
> >>>
> >>> --
> >>> To unsubscribe from this list: send the line "unsubscribe linux-nfs"
> > in
> >>> the body of a message to majordomo@vger.kernel.org
> >>> More majordomo info at  http://vger.kernel.org/majordomo-info.html
> >>>
> >>
> > 
> > 
> 
> -- 
> Benny Halevy
> CTO, Tonian Inc.
> 
> Tel: +972-54-802-8340
> bhalevy@tonian.com
> 

Re: notify_deviceid_type4

[Marc Eshel]

Trond, can you please apply the following patch so we are in compliance 
with the spec.
Thanks, Marc.

diff --git a/include/linux/nfs4.h b/include/linux/nfs4.h
index 59cc833..ad32df5 100644
--- a/include/linux/nfs4.h
+++ b/include/linux/nfs4.h
@@ -499,8 +499,8 @@ enum pnfs_iomode {
 };
 
 enum pnfs_notify_deviceid_type4 {
-       NOTIFY_DEVICEID4_CHANGE = 1 << 1,
-       NOTIFY_DEVICEID4_DELETE = 1 << 2,
+       NOTIFY_DEVICEID4_CHANGE = 1,
+       NOTIFY_DEVICEID4_DELETE = 2,
 };
 
 #define NFL4_UFLG_MASK                 0x0000003F

-------------------------------------------------------------------------------------------------------------

The spec defines notify_deviceid_type4 as:

20.12.1.  ARGUMENT
   /*
    * Device notification types.
    */
   enum notify_deviceid_type4 {
           NOTIFY_DEVICEID4_CHANGE = 1,
           NOTIFY_DEVICEID4_DELETE = 2
   };

RE: notify_deviceid_type4

[Marc Eshel]

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Re: notify_deviceid_type4

[Jim Rees]

Marc Eshel wrote:

  commit 1013e2ea88384da2e7326f40047bbc92deb9e516
  Author: Marc Eshel <eshel@almaden.ibm.com>
  Date:   Fri Dec 7 15:58:07 2012 -0800
  
  Change definition of notify_deviceid_type4 to correspond to the NFSv4.1 
  spec.

Doesn't apply for me:

% git am ~/Mail/tmp/89
Applying: RE: notify_deviceid_type4
fatal: corrupt patch at line 9
Patch failed at 0001 RE: notify_deviceid_type4
When you have resolved this problem run "git am --resolved".
If you would prefer to skip this patch, instead run "git am --skip".
To restore the original branch and stop patching run "git am --abort".