Release of UBIL: ubi with log

[Brijesh Singh]

Hi,

On Wed, Mar 31, 2010 at 6:27 PM, Corentin Chary
<corentin.chary at gmail.com> wrote:
> On Tue, Mar 2, 2010 at 8:45 PM, Artem Bityutskiy <dedekind1 at gmail.com> wrote:
>> On Fri, 2010-02-26 at 18:28 +0530, Brijesh Singh wrote:
>>> Hi,
>>>  It gives me great pleasure in sharing UBIL: ubi with log.  We have
>>> added logging functionality to ubi for reducing mount time.
>>> UBIL uses the "same source base of UBI". The logging functionality can
>>> be added or removed at compile time using "make menuconfig option".
>>>
>>> We have seen mount time reduction of 50% in 1GB NAND. We are expecting
>>> even better results for larger flash memories.
>>>
>>> The source code of UBIL can be found in the following git tree:
>>> http://git.infradead.org/users/brijesh/ubi-2.6.git
>>>
>>
>> Sounds interesting! However, I'm out of office till end of March, and
>> won't be able to look closely at this. But hopefully others will try it.
>>
>
> Hi,
> Didn't took the time  to read the code, I'll try to do so soon.
> Could you tell us more about what you did and how it works ?
> Is it similar to yaffs checkpoints ? When are the log written ?
Not sure with yaffs checkpoints. But commit writes only valid log entries.
Log is written when an eba mapping is changed or when ec of peb is changed.

> What will happen if you try to mount something that used UBIL with a
> kernel without UBIL support ?
It won't work.


Thanks
Brijesh