GNU bug report logs - #14251
coreutils-8.15: tail.c : Need support for StorNext file system as distributed file system

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Message #5 received at submit <at> debbugs.gnu.org (full text, mbox):

From: Guenter Ressel-Herbert <Guenter.Ressel-Herbert <at> quantum.com>
To: "bug-coreutils <at> gnu.org" <bug-coreutils <at> gnu.org>
Cc: Guenter Ressel-Herbert <Guenter.Ressel-Herbert <at> Quantum.com>
Subject: coreutils-8.15: tail.c : Need support for StorNext file system as
	distributed file system
Date: Wed, 24 Apr 2013 06:47:19 +0000

[Message part 1 (text/plain, inline)]

Folks,

my name is Guenter Ressel-Herbert and I'm working in Quantum's StorNext Sustaining Engineering team.
I have a customer that needs support for tail -f on our StorNext SAN clients. StorNext (ex cvfs) is a distributed
file system that is bypassing the VFS layer on the client, hence no trigger for any inotify registration. Seems to
be a common issue for most distributed file systems. Checking out coreutils-8.15/src/tail.c, I found that
tail -f reverts back to the traditional polling method for all FS's listed in  src/fs-is-local.h  returning 0. Would
you please be so kind and add StorNext as distributed file system to that header file? You also might need
to make up a new #define for the StorNext magic listed below.

StorNext output for fstatfs:




fstatfs(3, {f_type=0xbeefdead, f_bsize=4096, f_blocks=244187136, f_bfree=242457823, f_bavail=242457823, f_files=1262592, f_ffree=1262483, f_fsid={1939504002, 317934}, f_namelen=255, f_frsize=4096}) = 0



As you see, the magic is 0xbeefdead.



Thanks a lot!



Guenter Ressel-Herbert







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Message #10 received at 14251-done <at> debbugs.gnu.org (full text, mbox):

From: Pádraig Brady <P <at> draigBrady.com>
To: Guenter Ressel-Herbert <Guenter.Ressel-Herbert <at> quantum.com>
Cc: 14251-done <at> debbugs.gnu.org
Subject: Re: bug#14251: coreutils-8.15: tail.c : Need support for StorNext
	file system as distributed file system
Date: Wed, 24 Apr 2013 23:08:20 +0100

[Message part 1 (text/plain, inline)]

On 04/24/2013 07:47 AM, Guenter Ressel-Herbert wrote:
> Folks,
> 
> my name is Guenter Ressel-Herbert and I'm working in Quantum's StorNext Sustaining Engineering team.
> I have a customer that needs support for tail -f on our StorNext SAN clients. StorNext (ex cvfs) is a distributed
> file system that is bypassing the VFS layer on the client, hence no trigger for any inotify registration. Seems to
> be a common issue for most distributed file systems. Checking out coreutils-8.15/src/tail.c, I found that
> tail -f reverts back to the traditional polling method for all FS's listed in  src/fs-is-local.h  returning 0. Would
> you please be so kind and add StorNext as distributed file system to that header file? You also might need
> to make up a new #define for the StorNext magic listed below.
> 
> StorNext output for fstatfs:
> 
> fstatfs(3, {f_type=0xbeefdead, f_bsize=4096, f_blocks=244187136, f_bfree=242457823, f_bavail=242457823, f_files=1262592, f_ffree=1262483, f_fsid={1939504002, 317934}, f_namelen=255, f_frsize=4096}) = 0
> 
> As you see, the magic is 0xbeefdead.

While I'm slightly hesitant above adding support for
this closed source file system, there is precedence,
and I see the clients are GPL.

So I propose to support this with the attached.

thanks,
Pádraig.

[snfs.patch (text/x-patch, attachment)]

Message #13 received at 14251 <at> debbugs.gnu.org (full text, mbox):

From: Jim Meyering <jim <at> meyering.net>
To: 14251 <at> debbugs.gnu.org
Cc: Guenter.Ressel-Herbert <at> quantum.com, P <at> draigBrady.com
Subject: Re: bug#14251: coreutils-8.15: tail.c : Need support for StorNext
	file system as distributed file system
Date: Thu, 25 Apr 2013 06:04:19 +0200

Pádraig Brady wrote:
> Subject: [PATCH] stat,tail: improve support for snfs
>
> The StorNext distributed file system was previously known as CVFS.
>
> * src/stat.c (human_fstype): Add new file system ID definition.
> * NEWS: Mention the improvement.
> Fixes http://bugs.gnu.org/14251

Looks fine.  Thanks.`

Message #16 received at 14251-done <at> debbugs.gnu.org (full text, mbox):

From: Bernhard Voelker <mail <at> bernhard-voelker.de>
To: "Pádraig Brady" <P <at> draigBrady.com>, 
	Guenter Ressel-Herbert <Guenter.Ressel-Herbert <at> quantum.com>
Cc: 14251-done <at> debbugs.gnu.org
Subject: Re: bug#14251: coreutils-8.15: tail.c : Need support for StorNext
	file system as distributed file system
Date: Thu, 25 Apr 2013 09:15:25 +0200 (CEST)

> On April 25, 2013 at 12:08 AM Pádraig Brady <P <at> draigBrady.com> wrote:
> While I'm slightly hesitant above adding support for
> this closed source file system, there is precedence,
> and I see the clients are GPL.
>
> So I propose to support this with the attached.

Hi Padraig,

I also searched a bit for 0xBEEFDEAD, but I couldn't find
a good document related to StorNext.  Where did you find
the file system name?  Should we add such an URL to the commit?

Otherwise, the patch looks good.

Have a nice day,
Berny

Message #19 received at 14251 <at> debbugs.gnu.org (full text, mbox):

From: Pádraig Brady <P <at> draigBrady.com>
To: Bernhard Voelker <mail <at> bernhard-voelker.de>,
	Guenter Ressel-Herbert <Guenter.Ressel-Herbert <at> quantum.com>
Cc: 14251 <at> debbugs.gnu.org
Subject: Re: bug#14251: coreutils-8.15: tail.c : Need support for StorNext
	file system as distributed file system
Date: Thu, 25 Apr 2013 09:53:08 +0100

On 04/25/2013 08:15 AM, Bernhard Voelker wrote:
>> On April 25, 2013 at 12:08 AM Pádraig Brady <P <at> draigBrady.com> wrote:
>> While I'm slightly hesitant above adding support for
>> this closed source file system, there is precedence,
>> and I see the clients are GPL.
>>
>> So I propose to support this with the attached.
> 
> Hi Padraig,
> 
> I also searched a bit for 0xBEEFDEAD, but I couldn't find
> a good document related to StorNext.  Where did you find
> the file system name?  Should we add such an URL to the commit?

I got the name from just searching for snfs and cvfs.
There were various URLs referring to both.

As for BEEFDEAD, I didn't see anything online.
Guenter, can you post a link to the GPL client code
so we can link/verify?

> Otherwise, the patch looks good.

thanks,
Pádraig.

Message #22 received at 14251 <at> debbugs.gnu.org (full text, mbox):

From: Pádraig Brady <P <at> draigBrady.com>
To: Bernhard Voelker <mail <at> bernhard-voelker.de>,
	Guenter Ressel-Herbert <Guenter.Ressel-Herbert <at> quantum.com>
Cc: 14251 <at> debbugs.gnu.org
Subject: Re: bug#14251: coreutils-8.15: tail.c : Need support for StorNext
	file system as distributed file system
Date: Thu, 25 Apr 2013 17:05:43 +0100

On 04/25/2013 09:53 AM, Pádraig Brady wrote:
> On 04/25/2013 08:15 AM, Bernhard Voelker wrote:
>>> On April 25, 2013 at 12:08 AM Pádraig Brady <P <at> draigBrady.com> wrote:
>>> While I'm slightly hesitant above adding support for
>>> this closed source file system, there is precedence,
>>> and I see the clients are GPL.
>>>
>>> So I propose to support this with the attached.
>>
>> Hi Padraig,
>>
>> I also searched a bit for 0xBEEFDEAD, but I couldn't find
>> a good document related to StorNext.  Where did you find
>> the file system name?  Should we add such an URL to the commit?
> 
> I got the name from just searching for snfs and cvfs.
> There were various URLs referring to both.
> 
> As for BEEFDEAD, I didn't see anything online.
> Guenter, can you post a link to the GPL client code
> so we can link/verify?

Sorry I got confused with FhGFS, which has GPL clients.

thanks,
Pádraig.

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