2024 Btrfs move root to subvolume

Btrfs move root to subvolume

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WebOct 18, 2024 · Making /home a btrfs subvolume is as easy as creating a new subvolume /home-temp, copying or moving the contents of /home to /home-temp, deleting /home, and renaming /home-temp to /home. You don’t need any fstab entry for that. WebA subvolume in BTRFS can be accessed in two ways: like any other directory that is accessible to the user like a separately mounted filesystem (options subvol or subvolid) In the latter case the parent directory is not visible and accessible. This is similar to a bind mount, and in fact the subvolume mount does exactly that.

How to convert root directory into a subvolume in btrfs? : r/btrfs - Reddit

WebAbout your worries about moving data to different subvolumes, there is a great solution. As long as it is on the same btrfs top volume you can just mount it and copy data with cp - - reflink=always. It won't move any data at all, basically just relink it. rubyrt • 2 yr. ago copy data with cp - - reflink=always WebJan 20, 2024 · The main conclusion is you should mount the root of your Btrfs filesystem somewhere, with subvol=/ option. This way you gain access to the filesystem in its entirety. Note it's a good idea not to mount Btrfs / as your OS /. chris and gina\u0027s cafe

Move a BTRFS root file system install to a subvolume

WebHow to subvolume a btrfs root partition after installation? : r/archlinux My guess would be: load an arch live cd mount /dev/sda2 on to /mnt create subvolumes (btrfs subvolume … WebAug 9, 2013 · Mount your target btrfs partition manually, in e.g. /mnt/btrfs by using . sudo mount /dev/sda2 /mnt/btrfs (assuming the partition holding the btrfs is /dev/sda2). This … WebDec 16, 2024 · I have a btrfs partition known as /dev/sdb3. Inside I have two subvolumes, one as /root which will be '/', and /home which is self explanatory. My /dev/sdb1 partition … genshin cafe houston

linux - GRUB2: /boot as BTRFS subvolume - Super User

Moving subvolume to different drive : r/btrfs - reddit

WebThis would potentially make it a little easier to change distributions later if I wanted to while preserving important data and save some space on the main boot drive. Is it sufficient to: Mount the second drive somewhere Create new subvolume on second drive copy/move file from \@home to new subvolume WebOct 27, 2024 · 4. Change btrfs subvolume name using sudo mv, in my example: sudo mv @rootfs @ 5. Edit /etc/fstab on your root partition, to tell it new name of subvolume, … genshin cafe malaysiaWebJun 23, 2015 · Aside from /boot, all my partitions (including root, /) are BTRFS subvolumes. I'm switching to BTRFS RAID1, and for the sake of integrity, want to include /boot within the BTRFS partition. Preferably as a separate subvolume (quota support) but possible as part of the root subvolume. I'm using the latest fedora, 22, which means: grub2 2.02-0.16.fc22 genshin cafe philippines

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Btrfs move root to subvolume

Change root subvolume on btrfs - Google Groups

WebSep 18, 2024 · Btrfs/System Root Guide. This exercise is one example for re-basing a Gentoo installation's root filesystem to use btrfs. In this case, the existing system is an … WebApr 10, 2024 · Assuming / is currently the root subvolume of your BTRFS filesystem, you need to first create the subvolumes and then move the directories into their respective …

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WebOct 18, 2024 · You should also add rootfstype=btrfs to your kernel command line in extlinux.conf. Of course, you should add an appropriate root entry as well. Something … WebAs far as I know if you rollback a root subvolume, the nested subvolume will not be touched. It will remain mounted in the proper place and can be backed up separately. No the subvolumes are flat and a fstabmount point is used to exclude a path from all subvolume snapshots. findmnt -o SOURCE,TARGET -t btrfs SOURCE TARGET

WebJan 6, 2014 · The root volume has a subvolume ID of zero, so mounting with subvolid=0 will mount the root. Subvolumes can be made to go away with: btrfs subvolume delete path For ordinary subvolumes (as opposed to snapshots, described below), the subvolume indicated by path must be empty before it can be deleted. Snapshots For user space utilities, install the btrfs-progspackage that is required for basic operations. If you need to boot from a Btrfs file system (i.e., your kernel and initramfs reside on a … See more The following shows how to create a new Btrfs file system. To convert an ext3/4 partition to Btrfs, see #Ext3/4 to Btrfs conversion. To use a partitionless setup, see #Partitionless Btrfs disk. See mkfs.btrfs(8)for more … See more

WebDoing these kinds of operations without needing a livecd are one of the nice features of btrfs. Here is a list of steps to accomplish what you want: Mount the btrfs root … WebThis happens since fb235dc06fac ("btrfs: qgroup: Move half of the qgroup accounting time out of commit trans"), kernel may lockup with quota enabled. There is one backref trace triggered by snapshot dropping along with write operation in the source subvolume.

WebMay 14, 2024 · /subvol/var is here presumably created inside the mounted @ and hence its path relative to the btrfs root (subvolid=5) would be @/subvol/var, instructions below are based on this assumption. So you probably either want to move the subvolume to /@var, via something like

WebJan 22, 2024 · Switch to root user and umount all devices other than the BTRFS partition: sudo -i umount /target/boot/efi umount -l /target/run umount /target/cdrom If you have other mount points (i.e. /home) umount them too. Create @ subvolume and move all files into it: cd /target btrfs subvolume create @ ls grep -v @ xargs mv -t @ chris and goffy run from newton to bostonWebNov 3, 2024 · mount the entire btrfs filesystem somewhere like /mnt/btrfs snapshot the whole thing into your new 'root' subvolume: sudo btrfs subv snap /mnt/btrfs /mnt/btrfs/root chroot into to your new snapshot root (varies by distro, but it'll be something like chroot /mnt/btrfs/root/ /bin/bash ) genshin cafe collabWebMar 2, 2024 · Move the root from one subvolume to another in BTRFS. I want to install Ubuntu in the BTRFS @root subvolume, but the Ubuntu installer does not allow … chris and ginny wisdomWebMar 26, 2016 · GRUB will boot into the subvolume set by 'rootflags=subvol=' in your kernel parameters, whether or not it is the default subvolume. You don't have to set this … genshin cafe singaporeWebA BTRFS subvolume is a part of filesystem with its own independent file/directory hierarchy and inode number namespace. Subvolumes can share file extents. A snapshot is also … chris and glorias space llcWebThe examples below assume that the btrfs subvolume containing home and rootfs is mounted at /mnt/btr_pool. This is usually the btrfs root subvolume, which always has subvolid=5. Mounting subvolid=5 is recommended (mandatory for btrbk < v0.32.0) if you want to backup your root filesystem /. /etc/fstab: genshin cafe japanWebYou're right, the installer is not aware of BTRFS subvolumes, and this is still the case for 18.04. Using a separate subvolume for /var/log/ allows to restore a snapshot of / without loosing the logs. Do the server setup as usual, at the Finish installation step, select Go Back and Execute a shell. List all your target file systems: genshin cafe art