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Re: Volunteering for BeFS maintainership

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  Re: Volunteering for BeFS maintainership Greg KH <gregkh@linuxfoundation.org> - 2016-07-26 00:10 +0200
    Re: Volunteering for BeFS maintainership Luis de Bethencourt <luisbg@osg.samsung.com> - 2016-07-26 01:20 +0200
      Re: Volunteering for BeFS maintainership Theodore Ts'o <tytso@mit.edu> - 2016-07-26 20:00 +0200
        Re: Volunteering for BeFS maintainership Luis de Bethencourt <luisbg@osg.samsung.com> - 2016-07-26 22:40 +0200
          Re: Volunteering for BeFS maintainership Theodore Ts'o <tytso@mit.edu> - 2016-07-27 05:10 +0200
            Re: Volunteering for BeFS maintainership Luis de Bethencourt <luisbg@osg.samsung.com> - 2016-07-27 13:50 +0200
              Re: Volunteering for BeFS maintainership Theodore Ts'o <tytso@mit.edu> - 2016-07-27 15:30 +0200
                Re: Volunteering for BeFS maintainership Luis de Bethencourt <luisbg@osg.samsung.com> - 2016-07-27 16:50 +0200
        Re: Volunteering for BeFS maintainership Salah Triki <salah.triki@gmail.com> - 2016-07-27 04:10 +0200
    Re: Volunteering for BeFS maintainership Salah Triki <salah.triki@gmail.com> - 2016-07-27 02:00 +0200

#1450068 — Re: Volunteering for BeFS maintainership

On Mon, Jul 25, 2016 at 06:21:19PM +0100, Luis de Bethencourt wrote:
> PD: I don't know if there is a formal process for maintainership in the Linux
> kernel community. I am happy to follow that if it exists.

If no one objects, and you want to do this, send a real patch and away
you go!

Good luck!

greg k-h

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#1450252

On 25/07/16 22:23, Greg KH wrote:
> On Mon, Jul 25, 2016 at 06:21:19PM +0100, Luis de Bethencourt wrote:
>> PD: I don't know if there is a formal process for maintainership in the Linux
>> kernel community. I am happy to follow that if it exists.
> 
> If no one objects, and you want to do this, send a real patch and away
> you go!
> 
> Good luck!
> 
> greg k-h
> 

Thanks Greg! :)

I will wait a few days in case other people want to comment before.

Luis

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#1450724

On Tue, Jul 26, 2016 at 12:16:24AM +0100, Luis de Bethencourt wrote:
> 
> I will wait a few days in case other people want to comment before.
>

Sounds great!  Do you have a git tree set up for your befs development?

And if you haven't made plans to use xfstests, I would certainly
commend that for your consideration.  Don't forget to subscribe to
fstests@vger.kernel.org to get xfstests announcements.  Also, if
you're interested in a framework to easily run xfstests in a GCE
(Google Compute Engine) VM, feel free to contact me.

Cheers,

						 - Ted

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#1450869

On 26/07/16 18:56, Theodore Ts'o wrote:
> On Tue, Jul 26, 2016 at 12:16:24AM +0100, Luis de Bethencourt wrote:
>>
>> I will wait a few days in case other people want to comment before.
>>
> 
> Sounds great!  Do you have a git tree set up for your befs development?
> 

Thank you :)

Yes, I have the following in github (if that is OK):
https://github.com/luisbg/linux-befs

I have two branches there based on Linus' master:
 - befs-linus: with patches Andrew Morton has approved
 - befs-next: with patches I've tested but that remain under review

> And if you haven't made plans to use xfstests, I would certainly
> commend that for your consideration.  Don't forget to subscribe to
> fstests@vger.kernel.org to get xfstests announcements.  Also, if
> you're interested in a framework to easily run xfstests in a GCE
> (Google Compute Engine) VM, feel free to contact me.
> 
> Cheers,
> 
> 						 - Ted
> 

I've subscribed to fstests@vger.kernel.org.

It would be amazing to have a framework to run xfstests in a GCE VM.

Big thanks,
Luis

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#1451013

On Tue, Jul 26, 2016 at 09:30:13PM +0100, Luis de Bethencourt wrote:
> > 
> > Sounds great!  Do you have a git tree set up for your befs development?
> 
> Yes, I have the following in github (if that is OK):
> https://github.com/luisbg/linux-befs
> 
> I have two branches there based on Linus' master:
>  - befs-linus: with patches Andrew Morton has approved
>  - befs-next: with patches I've tested but that remain under review

So it sounds like you plan to send patches through Andrew's tree.
That works fine, although if you end up sending a larger number of
patches through the linux-mm tree, it might make sense for you to send
patches to Linus directly.  So if you have a chance to get a GPG key
which is signed by people in the Kernel keyring, that would be a good
preparation for that eventuality.  That will require face-to-face
verification of your identity by people who are already in the GPG web
of trust, so it's good to plan for that in advance.

> It would be amazing to have a framework to run xfstests in a GCE VM.

Please see:

       https://thunk.org/gce-xfstests

and

	https://github.com/tytso/xfstests-bld/blob/master/README.md

for more information.

I plan to do some work to make it simpler to get started using
gce-xfstests.  (Specifically, so you don't have to build the tree and
generate your own GCE image, but instead using a premade one.)

Are there userspace tools available to create and consistency check
BeFS file systems?  If so, I can try to get those included into the
test appliance image.  (Better yet, if you can arrange to have someone
create a debian package for BeFStools, that would be great.)

						- Ted

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#1451248

On 27/07/16 04:05, Theodore Ts'o wrote:
> On Tue, Jul 26, 2016 at 09:30:13PM +0100, Luis de Bethencourt wrote:
>>>
>>> Sounds great!  Do you have a git tree set up for your befs development?
>>
>> Yes, I have the following in github (if that is OK):
>> https://github.com/luisbg/linux-befs
>>
>> I have two branches there based on Linus' master:
>>  - befs-linus: with patches Andrew Morton has approved
>>  - befs-next: with patches I've tested but that remain under review
> 
> So it sounds like you plan to send patches through Andrew's tree.

Not sure. Whatever Andrew, Al, Greg and yourself think is better.

> That works fine, although if you end up sending a larger number of
> patches through the linux-mm tree, it might make sense for you to send
> patches to Linus directly.  So if you have a chance to get a GPG key
> which is signed by people in the Kernel keyring, that would be a good
> preparation for that eventuality.  That will require face-to-face
> verification of your identity by people who are already in the GPG web
> of trust, so it's good to plan for that in advance.

I will be at ELCE in 3 months [0]. It will be a good opportunity to get my
GPG key signed by people in the Kernel keyring. For example Maxime Ripard,
who is one of the speakers and in the GPG web of trust [1].

> 
>> It would be amazing to have a framework to run xfstests in a GCE VM.
> 
> Please see:
> 
>        https://thunk.org/gce-xfstests
> 
> and
> 
> 	https://github.com/tytso/xfstests-bld/blob/master/README.md
> 
> for more information.

Very nice. Looking forward to playing with it soon, and adding it to my
development process. I have learned a lot reading the ext4 code so I am
also interested in running the test suite with that.

> 
> I plan to do some work to make it simpler to get started using
> gce-xfstests.  (Specifically, so you don't have to build the tree and
> generate your own GCE image, but instead using a premade one.)

I will watch out for updates on this on fstests@vger.

> 
> Are there userspace tools available to create and consistency check
> BeFS file systems?  If so, I can try to get those included into the
> test appliance image.  (Better yet, if you can arrange to have someone
> create a debian package for BeFStools, that would be great.)
> 
> 						- Ted

Support for BeFS in Linux is read-only. So there are no tools to create
BeFS file systems. I have a bunch of BeFS images created from Haiku OS
that cover most things. 

There is no reason a consistency check tool can't be written. I think this
could be a fun exercise, I am tempted to add it to my task list :)
However this tool can only inform if the file system is consistent, and not
really fix it.  Similar to "e2fsck -n".

Salah told me he is planning to slowly work on adding read support in the
future. But don't want to make any promises/plans on his behalf.

Thanks,
Luis



[0] http://events.linuxfoundation.org/events/embedded-linux-conference-europe/program/schedule
[1] https://www.kernel.org/doc/ksmap/

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#1451282

On Wed, Jul 27, 2016 at 12:45:36PM +0100, Luis de Bethencourt wrote:
> Support for BeFS in Linux is read-only. So there are no tools to create
> BeFS file systems. I have a bunch of BeFS images created from Haiku OS
> that cover most things.

Ah, well, pretty much all of the xfstests assume the ability to write
into the file system.  So it may be a while before using xfstests will
make sense for BeFS.

> There is no reason a consistency check tool can't be written. I think this
> could be a fun exercise, I am tempted to add it to my task list :)
> However this tool can only inform if the file system is consistent, and not
> really fix it.  Similar to "e2fsck -n".

That's all which is necessary for xfstests --- the idea is that the
test will make various changes to the file system, and then
correctness is checked both by whether the expected output is printed
as the test probes changed the file system state, and by the
consistency checker confirming that the file system is in a consistent
sane state after each test completes.

> Salah told me he is planning to slowly work on adding read support in the
> future. But don't want to make any promises/plans on his behalf.

I assume you mean write support in the above paragraph.  :-)

Cheers,

						- Ted

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#1451313

On 27/07/16 14:23, Theodore Ts'o wrote:
> On Wed, Jul 27, 2016 at 12:45:36PM +0100, Luis de Bethencourt wrote:
>> Support for BeFS in Linux is read-only. So there are no tools to create
>> BeFS file systems. I have a bunch of BeFS images created from Haiku OS
>> that cover most things.
> 
> Ah, well, pretty much all of the xfstests assume the ability to write
> into the file system.  So it may be a while before using xfstests will
> make sense for BeFS.
> 
>> There is no reason a consistency check tool can't be written. I think this
>> could be a fun exercise, I am tempted to add it to my task list :)
>> However this tool can only inform if the file system is consistent, and not
>> really fix it.  Similar to "e2fsck -n".
> 
> That's all which is necessary for xfstests --- the idea is that the
> test will make various changes to the file system, and then
> correctness is checked both by whether the expected output is printed
> as the test probes changed the file system state, and by the
> consistency checker confirming that the file system is in a consistent
> sane state after each test completes.
> 

Right. It will still be valuable for me to run xfstests for ext4 and btrfs.

Thanks for the advice.

>> Salah told me he is planning to slowly work on adding read support in the
>> future. But don't want to make any promises/plans on his behalf.
> 
> I assume you mean write support in the above paragraph.  :-)
> 

You assume correctly :) Sorry for the typo.

> Cheers,
> 
> 						- Ted
> 

Thanks,
Luis

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#1451002

On Tue, Jul 26, 2016 at 01:56:56PM -0400, Theodore Ts'o wrote:
> On Tue, Jul 26, 2016 at 12:16:24AM +0100, Luis de Bethencourt wrote:
> > 
> > I will wait a few days in case other people want to comment before.
> >
> 
> Sounds great!  Do you have a git tree set up for your befs development?
> 
> And if you haven't made plans to use xfstests, I would certainly
> commend that for your consideration.  Don't forget to subscribe to
> fstests@vger.kernel.org to get xfstests announcements.  Also, if
> you're interested in a framework to easily run xfstests in a GCE
> (Google Compute Engine) VM, feel free to contact me.
> 
> Cheers,
> 
> 						 - Ted

Thanx :)

I'm also interested in the GCE VM.

best regards,
salah

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#1450974

On Mon, Jul 25, 2016 at 02:23:31PM -0700, Greg KH wrote:
> On Mon, Jul 25, 2016 at 06:21:19PM +0100, Luis de Bethencourt wrote:
> > PD: I don't know if there is a formal process for maintainership in the Linux
> > kernel community. I am happy to follow that if it exists.
> 
> If no one objects, and you want to do this, send a real patch and away
> you go!
> 
> Good luck!
> 
> greg k-h

Thanx greg :)

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