Questions tagged as ['btrfs']

A couple of days ago system SSD in my desktop failed completely. A week or two before some symptoms appeared: the system occasionally booted as read-only, some errors appeared. But after a reboot all worked well. SMART didn't show anything at all.

This is my main working computer and it is 10-year-old (with some upgrades). I have proper backups set up to a HDD and also important data is sent to a ...

I recently found one of my Virtual Machine images with the extended attribute 'm'. I tried to look it up, but I found no information. Is this an undocumented extended attribute?

$ lsattr usb2ubuntu.btrfs.img*
---------------------m usb2ubuntu.btrfs.img
---------------------- usb2ubuntu.btrfs.img.210810_15:02:49.bak

Notice the attribute doesn't exist on the backup file.

So... I get that fdisk lists partition sizes, and df lists filesystem sizes, and that filesystem may use a portion of the partition and disagree on the size, but why would df list filesystem sizes that are larger that the partition sizes?

df: /dev/sda6 200G

fdisk: /dev/sda5 7.8G

Wut?

Recently I've installed Ubuntu 20.04 (ext4). On the same disk was installed Linux Mint 19 (btrfs). I was able to mount partition, copy files, etc. It wasn't corrupted.

After installing Ubuntu grub was unable to recognise files of Linux Mint system and make record in boot menu. I was running grub from ubuntu terminal.

I installed timeshift btrfs type in my Dell laptop with Ubuntu 20.04 for btrfs. After reboot, I see login is not possible in graphics console and so pressing CTRL-ALT-F2 I came to text console and loging was possible. However, after the login, I see that /home and /opt partitions are missing which are listed in /etc/fstab and pwd shows directory /. I could see the partitions using sudo fdisk -l command.  ...

I use a command like btrfs restore -iv /dev/sdc1 /RESTORED

estimated time of running it is few days

In every hour of running I see a lot of prompts like:

We seem to be looping a lot on /path/to/some/file, do you want to keep going on?
(y/N/a)

I'd like to say N to all remaining prompts, but there is no such option (according to man btrfs-restore and btrfs )

I think I need this: yes N | btrfs restore -iv ...