how to understand bcache

how to understand bcache

[Pony Cheng]

Hi all,

I'm beginner of kernel module, and I'm reading bcache codebase now.
But I'm very confused about many details, such as b+tree and io path.

So, what should I do now, do you have some advices?

Thanks,
PonyCheng

Re: how to understand bcache

[Coly Li]

On 24/01/2018 10:34 AM, Pony Cheng wrote:
> Hi all,
> 
> I'm beginner of kernel module, and I'm reading bcache codebase now.
> But I'm very confused about many details, such as b+tree and io path.
> 
> So, what should I do now, do you have some advices?

Hi Pony,

Read the code, through out your questions. If the question is
easy/simple, you may have response.

Coly Li

Re: how to understand bcache

[tang.junhui]

From: Tang Junhui <tang.junhui@zte.com.cn>

> On 24/01/2018 10:34 AM, Pony Cheng wrote:
> > Hi all,
> > 
> > I'm beginner of kernel module, and I'm reading bcache codebase now.
> > But I'm very confused about many details, such as b+tree and io path.
> > 
> > So, what should I do now, do you have some advices?
> 
> Hi Pony,
> 
> Read the code, through out your questions. If the question is
> easy/simple, you may have response.
> 
> Coly Li

It sounds interesting, hahahaha~~

you'd better to known how the data organized in disk,
and what is bkey, bset, btree node, and what erver else,
and think about deeply: If I am the author, how would I write
the code, and read the currently code, to find wether it written
as your thought, judge about is it your wrong or the author, Then 
you understood bcache, and bcache also understood you.

you also can ask our dear maintainer Mike, who knows all about bcache,
but sometiomes he is very busy, It is normally you would hear nothing 
from him for one weeks or two, sometimes maybe three, but never five, 
since the merge window comes.

Thanks,
Tang Junhui

Re: how to understand bcache

[Pony Cheng]

OK, Thank you very much.

2018-01-24 17:34 GMT+08:00  <tang.junhui@zte.com.cn>:
> From: Tang Junhui <tang.junhui@zte.com.cn>
>
>> On 24/01/2018 10:34 AM, Pony Cheng wrote:
>> > Hi all,
>> >
>> > I'm beginner of kernel module, and I'm reading bcache codebase now.
>> > But I'm very confused about many details, such as b+tree and io path.
>> >
>> > So, what should I do now, do you have some advices?
>>
>> Hi Pony,
>>
>> Read the code, through out your questions. If the question is
>> easy/simple, you may have response.
>>
>> Coly Li
>
> It sounds interesting, hahahaha~~
>
> you'd better to known how the data organized in disk,
> and what is bkey, bset, btree node, and what erver else,
> and think about deeply: If I am the author, how would I write
> the code, and read the currently code, to find wether it written
> as your thought, judge about is it your wrong or the author, Then
> you understood bcache, and bcache also understood you.
>
> you also can ask our dear maintainer Mike, who knows all about bcache,
> but sometiomes he is very busy, It is normally you would hear nothing
> from him for one weeks or two, sometimes maybe three, but never five,
> since the merge window comes.
>
> Thanks,
> Tang Junhui
>

Re: how to understand bcache

[Michael Lyle]

On Wed, Jan 24, 2018 at 1:34 AM,  <tang.junhui@zte.com.cn> wrote:
> you also can ask our dear maintainer Mike, who knows all about bcache,
> but sometiomes he is very busy, It is normally you would hear nothing
> from him for one weeks or two, sometimes maybe three, but never five,
> since the merge window comes.

;)  I didn't think I was this bad.  I'll try to do better.

Mike

Re: how to understand bcache

[tang.junhui]

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From: Tang Junhui <tang.junhui@zte.com.cn>


>On Wed, Jan 24, 2018 at 1:34 AM,  <tang.junhui@zte.com.cn> wrote:
>> you also can ask our dear maintainer Mike, who knows all about bcache,
>> but sometiomes he is very busy, It is normally you would hear nothing
>> from him for one weeks or two, sometimes maybe three, but never five,
>> since the merge window comes.
>
>;)  I didn't think I was this bad.  I'll try to do better.
Welcome! We are looking forward to your back. You are good and
important to us.

¨r(¨s¨Œ¨t)¨q

Thanks,
Tang Junhui