Re: Beginner questions about ext4

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Hello,

I can now already answer some of my questions, thought others not:

> In ext3 did each block group contain always 1 block? 
> If not, then how many?

This information is in ext4_super_block.s_blocks_per_group

> 2> I see that the number of groups inside a flexible group is
> given by 2^sb.s_log_groups_per_flex but:
> a> Every single group is a flexible group or some are and some now?

I am still very much interesting in knowing this! Are all groups flexible 
groups when FLEX_BG feature is activated?

I found this image for how things relate to one another without flex_bg:

http://origin-ars.els-cdn.com/content/image/1-s2.0-S1742287612000357-gr1.jpg

Does anyone know if there is a simular image with flex_bg???

thanks,

Felipe Monteiro de Carvalho


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