Ext4 devel interlock meeting minutes (March 14, 2007)

Ext4 devel interlock meeting minutes (March 14, 2007)

[Avantika Mathur]

Ext4 Developer Interlock Call: 03/14/2007 Meeting Minutes

Attendees: Mingming Cao, Eric Sandeen, Ted Ts'o, Dave Kleikamp, Suparna Bhattacharya, Takashi Sato, Avantika Mathur

Minutes can be accessed at: http://ext4.wiki.kernel.org/index.php/Ext4_Developer%27s_Conference_Call 


Ext4 git Tree:

- Shaggy and Eric fixed the recent problems with the nanosecond timestamps in the git tree

- There is a general problem that the git tree is not updated frequently

	- Ted feels there is not enough testing done to feel comfortable updating to a new release

        -- Many of the patches added to the tree are not tested properly.  
	-- It would be helpful if people could pick up the tree and test it, and make sure all upstream merging criteria is met by ext4 developers.

    - Currently looking at methods of automating testing of each new git tree release on different architectures and benchmarks.

    - Slow code review is also slowing down ext4.

- Ted suggested maintaining a git tree that tracks the patch queue, so there can be multiple people working on the patch queue. 
	- When patches are stable, update the central git tree that can then be pushed upstream.

- Ted will start a second git tree, and initially put Shaggy and Mingming as additional users who can access the tree. 


OLS:

- The Ext4 OLS Paper was accepted.

- Avantika presented the basic outline for the paper, Suparna had comments on the layout

	- Rather than grouping features based on time (when they are going to be included), group them based on classification, 
		- i.e. scalability, block placement, new features.

	- This way the paper can be used as a reference for people who want to learn about ext4

- Avantika will update the outline and send out a new version

- In the 2005 OLS ext3 paper, benchmarks tio dbench and filemark were used. 
	- Looking into different benchmarks to use in this paper. 
	- Eric suggested looking at CPU utilization test used by David Chinner in his XFS OLS paper last year.


Preallocation:

- Amit has been working on implementing the fallocate systemn call

    - he was struggling with the mode bit and implementation on different architectures.

- Having difficulty in how to order the parameters on s390 architecture

- Suparna will ask Amit to post his current patches, so other can begin reviewing and helping out.


i_version Patches:

- the high 32  bit of the i_version field is still required to support the full 64 bit i_version number NFSv4 requires

- The general consensus on the call was to use the i_extra_isize in the inode for the high 32 bits.

    - This would keep i_version completely separated from ctime

Re: Ext4 devel interlock meeting minutes (March 14, 2007)

[Mingming Cao]

On Wed, 2007-03-14 at 15:49 -0700, Avantika Mathur wrote:
> Ext4 Developer Interlock Call: 03/14/2007 Meeting Minutes
> 
> Attendees: Mingming Cao, Eric Sandeen, Ted Ts'o, Dave Kleikamp, Suparna Bhattacharya, Takashi Sato, Avantika Mathur
> 
> Minutes can be accessed at: http://ext4.wiki.kernel.org/index.php/Ext4_Developer%27s_Conference_Call 
> 

just a little typo about the date of the conference on the wiki page,
you could fix that next time~

mingming
> 
> Ext4 git Tree:
> 
> - Shaggy and Eric fixed the recent problems with the nanosecond timestamps in the git tree
> 
> - There is a general problem that the git tree is not updated frequently
> 
> 	- Ted feels there is not enough testing done to feel comfortable updating to a new release
> 
>         -- Many of the patches added to the tree are not tested properly.  
> 	-- It would be helpful if people could pick up the tree and test it, and make sure all upstream merging criteria is met by ext4 developers.
> 
>     - Currently looking at methods of automating testing of each new git tree release on different architectures and benchmarks.
> 
>     - Slow code review is also slowing down ext4.
> 
> - Ted suggested maintaining a git tree that tracks the patch queue, so there can be multiple people working on the patch queue. 
> 	- When patches are stable, update the central git tree that can then be pushed upstream.
> 
> - Ted will start a second git tree, and initially put Shaggy and Mingming as additional users who can access the tree. 
> 
> 
> OLS:
> 
> - The Ext4 OLS Paper was accepted.
> 
> - Avantika presented the basic outline for the paper, Suparna had comments on the layout
> 
> 	- Rather than grouping features based on time (when they are going to be included), group them based on classification, 
> 		- i.e. scalability, block placement, new features.
> 
> 	- This way the paper can be used as a reference for people who want to learn about ext4
> 
> - Avantika will update the outline and send out a new version
> 
> - In the 2005 OLS ext3 paper, benchmarks tio dbench and filemark were used. 
> 	- Looking into different benchmarks to use in this paper. 
> 	- Eric suggested looking at CPU utilization test used by David Chinner in his XFS OLS paper last year.
> 
> 
> Preallocation:
> 
> - Amit has been working on implementing the fallocate systemn call
> 
>     - he was struggling with the mode bit and implementation on different architectures.
> 
> - Having difficulty in how to order the parameters on s390 architecture
> 
> - Suparna will ask Amit to post his current patches, so other can begin reviewing and helping out.
> 
> 
> i_version Patches:
> 
> - the high 32  bit of the i_version field is still required to support the full 64 bit i_version number NFSv4 requires
> 
> - The general consensus on the call was to use the i_extra_isize in the inode for the high 32 bits.
> 
>     - This would keep i_version completely separated from ctime
> 
> 
> 
> 
> 
> 
> -
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Re: Ext4 devel interlock meeting minutes (March 14, 2007)

[Randy Dunlap]

On Wed, 14 Mar 2007 15:49:39 -0700 Avantika Mathur wrote:

> Ext4 Developer Interlock Call: 03/14/2007 Meeting Minutes
> 
> Attendees: Mingming Cao, Eric Sandeen, Ted Ts'o, Dave Kleikamp, Suparna Bhattacharya, Takashi Sato, Avantika Mathur
> 
> Minutes can be accessed at: http://ext4.wiki.kernel.org/index.php/Ext4_Developer%27s_Conference_Call 
> 
> 
> Ext4 git Tree:
> 
> - Shaggy and Eric fixed the recent problems with the nanosecond timestamps in the git tree
> 
> - There is a general problem that the git tree is not updated frequently
> 
> 	- Ted feels there is not enough testing done to feel comfortable updating to a new release
> 
>         -- Many of the patches added to the tree are not tested properly.  
> 	-- It would be helpful if people could pick up the tree and test it, and make sure all upstream merging criteria is met by ext4 developers.
> 
>     - Currently looking at methods of automating testing of each new git tree release on different architectures and benchmarks.
> 
>     - Slow code review is also slowing down ext4.
> 
> - Ted suggested maintaining a git tree that tracks the patch queue, so there can be multiple people working on the patch queue. 
> 	- When patches are stable, update the central git tree that can then be pushed upstream.
> 
> - Ted will start a second git tree, and initially put Shaggy and Mingming as additional users who can access the tree. 

Hi,
What's the purpose of this second git tree, please?

---
~Randy
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