[LEDE-DEV] [PATCH] include: image.mk: ext4: double the default inode counter

[David Lang]

On Tue, 22 Nov 2016, Felix Fietkau wrote:

> On 2016-11-22 17:48, David Lang wrote:
>> On Tue, 22 Nov 2016, Felix Fietkau wrote:
>>
>>> On 2016-11-22 17:43, David Lang wrote:
>>>> On Tue, 22 Nov 2016, Felix Fietkau wrote:
>>>>
>>>>>> On a 16M filesystem, we probably want to use a 1K block size and have an inode
>>>>>> for every couple of blocks.
>>>>> I'd say on a 16M filesystem we probably want to use squashfs+ext4
>>>>> instead of plain ext4 and avoid the inode issue altogether.
>>>>
>>>> I'm not sure I understand how this would work?
>>> Pad a plain squashfs image to the intended target size, include mke2fs
>>> and mkf2fs (for bigger sizes) in the image.
>>> fstools will take care of the rest at boot time.
>>
>> you still have to set the parameters for mkfs to use.
> It will be created as an empty overlay filesystem, so there's lots of
> free inodes available.

but by default, it wouldn't have lots of free inodes, the default is one inode 
per 16K of filesystem, which is how we get to 1024 inodes on a 16M filesystem.

We need to be able to say that this is a tiny filesystem, and should really use 
a smaller blocksize and more inodes.

David Lang