File-compression on ubifs

Shibin George george.shibin1993 at
Tue Jun 4 08:14:49 PDT 2019

Any pointers would be appreciated, Thanks again!

Shibin George

On Fri, May 17, 2019 at 5:06 PM Shibin George
<george.shibin1993 at> wrote:
> Hi everyone,
> Had a query regarding mkfs.ubifs tool. I created an empty ubifs
> filesystem using:
> mkfs.ubifs -y /dev/ubiX_Y
> I was wondering that if I now create a new file on this filesystem
> (after mount()), would compression be enabled or disabled for that
> file by-default? I am sorry but I could quite grasp this from the
> mkfs.ubifs code.
> Another query that I have is this:
> Would ubifs do a better job at compression if it knows the root-dir
> contents ahead of time? In other words, is on-the-fly compression of a
> file (i.e. compression at the time of creating/writing to a file)
> generally worse than when the same file is known to ubifs at the time
> of image creation?
> Thanks for your time!
> Regards,
> Shibin George

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