Q: Resize root partition on running system?

[Seven.of.nine]

Q: Is it possible to do THIS:

How to resize ext4 root partition live without umount on Linux

on a Sailfish OS phone?
Has anyone yet tried this?

[philter]

Hi, a guide has been proposed here: README.md · master · olf (Olf0) / Installing Sailfish OS · GitLab

I did on Xperia 10 ii, you must follow the right guide for encrypted partitions
Enlarge 4Gb root partition? - General - Sailfish OS Forum

[Seven.of.nine]

Thanks @philter , but I know this guide and did this one time successfully on one of my Xperia 10’s. But my question was, is there a way to shrink data partition and enlarge root partition on a running SFOS on the phone (SSH / devel-su from computer) avoiding the fastboot & telnet action.
The linked article suggests that this is possible in principle. Therefore my question.

[olf]

@Seven.of.nine

But my question was, is there a way to shrink data partition and enlarge root partition on a running SFOS on the phone (SSH / devel-su from computer) avoiding the fastboot & telnet action.

The answer is: No

The linked article suggests that this is possible in principle.

No, it does not:

1. Please do read the big red box in the article. The text in the red box excellently explains why any “live enlarging” is a “bad idea™”.
2. This article solely describes how to enlarge (though it consistently uses the term “resize”, which comprises both, enlarging and shrinking) a partition and a file-system on it, using unpartitioned space on mass storage.
   • SailfishOS uses LVM volumes (i.e. not partitions) to hosts its file-systems.
   • There is no generic, unused space on mass storage, hence one has to shrink something else, first.

[Seven.of.nine]

Thanks! (20 characters)