[fChk]

Well, I know this is a quite time-consuming and complex process of increasing disk space, and I'm curious to know if someone might have a better method of doing it, and I'd love to know alternate methods of doing this as well.

I don't think it's time-consuming at all, but it's definitely error-prone. That's why system-storage-manager (ssm) -mentioned in my OP- was developed as a sugar-layer over the native lvm-commands.

I didn't use SSM because I've never used it before, so I can't trust it for an online job, but it definetly cut off the verbosity of lvm commands. Thus, I would recommend you watch this Youtube's demo on "How To Manage Linux Storage Using System Storage Manager SSM With LVM".

Then there is GParted but it needs a GUI. @Neoon's setup allows to boot on GParted and the use of VNC, but I didn't bother with that alternative at all. Nothing match typing the command yourself and see the immediate result to them... Yes, cumbersome BUT effective.

i skimmed through the links and i thought they confirmed what i had remembered. xfs is very good on high throughput systems with big files , multiple threads for read write, high MBps and iops systems. But as we are usually on a vps with one or two core and high contention for resources, i expected ext4 to be better or at least equal. that i was not losing any benefits. i dont have any benchmarks that i can claim or show you from. so basically this is totally a guess on my part.

You don't need any benchmarks to convince me that Ext4 is more suitable for the hardware environment that the VPS is in :-) I totally agree with you on that.

I don't think, in my own situation too, it would make much of a difference if the filesystem is either XFS or Ext4. BUT, I would nevertheless lean towards XFS, as it saved me at least 2 times since I started using (2016), from situations where I was starting to think that my data is gone!.. It's just this thing that we -Humans- call TRUST :-)