Context: I updated my CachyOS (Arch) BTRFS system. Some new things caused few problems especially brave browser(missing tabs), some icons missing.
So I wanted to go back to previous snapshot.
What I did: I first restored my home subvol which I saved before update. I worked.
Then I tried to restored my root partition. This is where I got the problem.
I got this error.
I would really appreciate URGENT help
If you need any more details I can provide.
EDIT
- I used BTRFS Assistant to restore the root partition. And I did it while the OS is running.
( I previously did that and got no issues )
- I pressed
crtl+dand got 👇🏽
- I typed my password and went into maintenance. Typed
journalctl -xband got 2667 lines 😵💫. While scrolling mindlessly, this looked like something 👇🏽
👉🏽
👉🏽
- This is my
refind_linux.conf👇🏽
"Boot with standard options" "quiet zswap.enabled=0 nowatchdog splash rw rootflags=subvol=/@ cryptdevice=UUID=60ecb22d-7685-43c2-ae2a-a2ad0c531cc7:luks-60ecb22d-7685-43c2-ae2a-a2ad0c531cc7 root=/dev/mapper/luks-60ecb22d-7685-43c2-ae2a-a2ad0c531cc7"
"Boot to single-user mode" "quiet zswap.enabled=0 nowatchdog splash rw rootflags=subvol=/@ cryptdevice=UUID=60ecb22d-7685-43c2-ae2a-a2ad0c531cc7:luks-60ecb22d-7685-43c2-ae2a-a2ad0c531cc7 root=/dev/mapper/luks-60ecb22d-7685-43c2-ae2a-a2ad0c531cc7" single
"Boot with minimal options" "ro root=/dev/mapper/luks-60ecb22d-7685-43c2-ae2a-a2ad0c531cc7"
- This my OS partition 👇🏽
- This is my subvol layout 👇🏽 (CachyOS default)
You are usually only interested in the last few lines of the journal: journalctl -f -n 200
Post that
Achievement unlocked: master tinkerer.
Wait did you try to restore the root partition while it was mounted to root? If yes, then that was probably the problem. No OS likes its filesystem being replaced on the fly.
But I have no idea on how to fix it. Maybe boot up a linux from USB and restore the root partition from there?
did you try to restore the root partition while it was mounted to root?
If you mean to ask if I restored the OS subvol while I am on the OS itself. Then, yes.
But, I’ve done this before and it worked just fine.
Maybe boot up a linux from USB and restore the root partition from there?
(from live mint) I tried to rename the @ (root) to @_2 and original subvol backup to @. And booted. OS successfully boots. But now my root partition is @_2, which should be @ ?
And the OS was in the state of prior restoration i.e. after system update.
Also please look at the edited part of the post
Years ago, I had a team of techs. I get this new guy, freshly minted MCSE, looking at a server we had pulled out of a clients after throwing down a replacement. I had looked at the server before and the easiest thing was just to nuke and pave, so I tell him to wipe it and install. I come back after an hour to find him repeatedly, from the command line of the NT4 installation I told him to replace, typing “fdisk c:” over and over again. I actually walked away for half an hour to see if he’d figure it out, only to find him at the same spot, typing it again and again.
He didn’t last long after that.
Id say the UUID has changed after you formatted / reimaged the partition of your /
Once logging into your SU check the UUID of your / disk against what your bootloader is expecting.
This.
The gist of how to fix it goes like this: Boot from USB, mount the root filesystem manually, and check the contents of /etc/fstab (on the mounted root, not the one on the USB drive). Check what it’s trying to mount as /, and update to correct values if necessary.
UUID remains unchanged. And matches with both fstab and refind_linux.conf
Please see edited post.
UUID remains unchanged. And matches with both fstab and refind_linux.conf
Please see edited post.
