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Questions tagged [btrfs]

btrfs is a B-tree based, copy-on-write filesystem for Linux. It's main features include snapshots, checksumming of data and filesystem level RAID support. It's similar to ZFS.

Btrfs tag should be used with all questions referring to usage of features specific to this filesystem:

  • defragmentation
  • resizing and addition and removal of block devices
  • it's RAID implementation
  • snapshot creation and usage

Also see:
for a similar copy-on-write filesystem.
http://btrfs.wiki.kernel.org for detailed information about the filesystem

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Replacing BTRFS snapshots with XFS+LVM

I working on replacing an unstable btrfs snapshot based backup system. One of the option was to go ZFS but it's not natively in the kernel. XFS was reliable for me since 10 years but as my research shows it cannot do snapshots on it's own, people…
johnas
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Install BTRFS Rootfs inside LVM Volume inside MDADM RAID

is it a good idea in terms of performance and stability? I have 4 disks whit the same size where i want to install the rootfs(opensuse) using btrfs, but i need swap and virtualmachine storage.. Because of that i need to use a filesystem that…
user325772
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Grub fails to boot my barebone Arch BTRFS setup

I'm not sure what I'm doing wrong. I basically used the latest arch linux live disk in a VM (Linux KVM), booted the latest arch linux live disk in a VM (Linux KVM on Arch) made a single partition formatted that with btrfs -m dup mounted the…
Alex
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mv hangs indefinitely on btrfs filesystem

I recently started experiencing problems when running mv on my ReadyNAS 312 system. It appears the call blocks immediately, i.e. when I run strace on it it appears to get stuck before doing much: open("[...]", O_RDONLY|O_NOFOLLOW) = 3 fstat(3,…
dinyar
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RHEL 7 server no longer successfully boots and I can't determine exactly why

The server disks are configured as follows: /dev/sda, /dev/sdb, /dev/sdc, /dev/sdd are ZFS zraid2 (using ZFS On Linux) /dev/sde1 is xfs /boot partition. /dev/sde2 is swap. /dev/sde3 is btrfs (holds everything else). I rebooted my server after…
Kefka
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Add menu entry in grub2 for os on btrfs partition

How can I add a menu entry in grub 2 for an os on a btrfs partition? Currently update-grub does not detect an os on a btrfs partition.
apanagio
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Balanced btrfs filesystem using different amounts of space on each disk

I recently upgraded a desktop server with 2 drives (1TB+3TB) drive to one with 1x1TB and 3x3TB drives. In the process, I installed btrfs and raided the 3TB drives together, leaving the 1TB drive as a boot volume. I converted the original 3TB drive…
Ron Gejman
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LXC container starts with readonly root filesystem

I am running LXC on Debain Wheezy using BTRFS, and have created a container using lxc-create using the "debian" template (yesterday). When starting the container, the root filesystem in the container is read only. I expected the rootfs in the…
Lee Begg
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debian stable raid autogrow filesystem database

I need to setup a debian stable system meeting the following needs: Hard disks should be mirroring : Raid 1 Filesystem(s) should autogrow if possible (just in case we replace one hdd with a bigger one, wait until sync and replace the other with a…
Bastian Ebeling
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RAID / FS choice for 12 hard drive machine?

I'm going to purchase a 14 bay HP 2U server with ECC memory and bunch of 3TB enterprise SATA drives. I would prefer to make 2 x RAID6 with 6 drive each. This will be used for local office storage and my Internet crawler. I am flooded with FS/RAID…
c2h2
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Grub2 w/ RAID5 and btrfs "error: unknown filesystem"

I have a Virtual Machine (in ESXi 5.1) running Ubuntu Server 12.04. When I try to boot my system I grub2 tells me "error: unknown filesystem". I've tried booting a Live CD then reinstalling grub from both a chrooted environment and by supplying the…
jbo5112
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btrfs balance kernel bug?

After getting a little annoyed with no space left errors when deleting files I started a btrfs balance process and 2-3 times the following appeared. Is this serious for my data or can I just ignore it because there is a security measure that handles…
kschurig
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Different options on btrfs subvolumes

I'm using kernel 3.0 and was wondering if btrfs supports / is planning to support different options on different subvolumes. For example I'd like to turn compression on for /usr, /lib, ..., but not for the faster changing directories like /home and…
viraptor
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Appropriate Linux (ubuntu 10.04) FS type for rapid FS management many small files and directories

Possible Duplicate: Linux's best filesystem to work with 10000's of files without overloading the system I/O I have an 240gb image store of approximately 1.5 million entries. About half of these entries are image files (4 to 100kb) and the other…
Michael Pearson
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btrfs vs. ZFS on a Ubuntu file server

I have a server which is running Ubuntu (Server Edition), and its main job is serving files through FTP (vsftpd) and AFP (netatalk). My /srv directory is starting to fill up, and I need to add more hard drives. Because its technology is outdated for…
Kudu
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