Alt text: O'RLY? generated book cover with a donkey, navy blue accent, header: "It's only free if you don't value your time", title: "Handling Arch Linux Failures", subtitle: "Mom, please cancel my today's agenda!"
this post was submitted on 21 Jun 2024
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My arch install is from 2015. It just works, why should I reinstall?
@partizan@lemm.ee mentioned cloning the drive and moving it to another computer. I imagine reinstalling would be easier at that point, that's why I asked.
And reinstalling the packages, moving over all the configs, setting up the partitions and moving the data over? (Not in this order, of course)
Cloning a drive would just require you to plug both the old and new to the same machine, boot up (probably from a live image to avoid issues), running a command and waiting until it finishes. Then maybe fixing up the fstab and reinstalling the bootloader, but those are things you need to do to install the system anyways.
I think the reason you'd want to reinstall is to save time, or get a clean slate without any past config mistakes you've already forgotten about, which I've done for that very reason, especially since it was still my first, and less experienced, install.
Well not really, cloning is much easier than reinstalling and then configuring everything again...
I have LVM set up from the start, so usually I just copy the /boot partition to the new disk, and the rest is in a LVM volume group, so I just use pvmove from old disk to the new one, fix the bootloader and fstab UUIDs, and Im ready to reboot from new disk, while I didnt even left my running system, no live USB needed or anything. (Of course I messed it up a first few times, so had to fix from a live OS).
But once you know all the quirks, I can be up and ready on a new drive withing 20mins (depends mainly on the pvmove), with all the stuff preserved and set
That's really cool, how can I learn more about LVM and that kinda stuff?
There is many tutorials and how tos, this is quite nice one:
https://wiki.archlinux.org/title/LVM
BTW some filesystems like btrfs and ZFS already have a similar functionality built in...
Thanks :)