Btrfs is a new copy on write filesystem for Linux aimed at implementing advanced features while focusing on fault tolerance, repair and easy administration. Initially developed by Oracle, Btrfs is licensed under the GPL and open for contribution from anyone.

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10
votes
2answers
12k views

How can I safely resize (shrink) a BTRFS partition?

I have my /home on a BTRFS partition and I need to shrink it, unfortunately Gparted does not have the resize option for this FS. Can I resize it in any other way without losing my data?
21
votes
2answers
17k views

Message “Sparse file not allowed” after installing on a btrfs filesystem

I've installed Ubuntu without creating a swap partition and with / on a btrfs.# Now I get the message "Sparse file is not allowed" on each boot. This message appears before the splash-screen. Is there ...
5
votes
1answer
3k views

What is the best way to partition, and what is the best file-system for a new Hard Disk? [duplicate]

Possible Duplicate: What's your recommendation on drive partitioning schemes for a desktop and home server? Is Btrfs in Maverick considered stable? Bonus: What is the "best" filesystem ...
3
votes
1answer
2k views

btrfs and missing free space

I converted my ext4 partition to btrfs and deleted the save subvolume after doing so. Then I enabled the compression (lzo) of the filessystem in the fstab file and everything is correct so far. Then ...
3
votes
3answers
1k views

btrfs with multi devices fails automount in fstab

I'm trying to automount btrfs on 12.04-desktop-amd64. During bootsplash, fstab failed to mount btrfs and asked skip or manually prepare. On the rootshell, btrfs device scan and mount -a could ...
14
votes
5answers
2k views

Is Btrfs in 10.10 considered stable?

I'm upgrading my laptop to Maverick (10.10) and I noticed btrfs is an option for the filesystem. I read a while ago that the Ubuntu team weren't sure if it was going to be stable for Maverick. Does ...
6
votes
2answers
9k views

How can I convert my root partition from BTRFS to EXT4?

Is it possible to convert btrfs to ext4 without losing data? I'm experiencing a very low speed on read/write operations on btrfs.
5
votes
1answer
1k views

How to stop disks from being automagically mounted on boot?

I have a btrfs filesystem RAIDed across several disks. The machine is connected via USB to an external hard-drive bay where three disks live. In my fstab I have a mount entry for one of the disks ...
32
votes
5answers
3k views

How can I flip a single bit in a file?

I want to intentionally damage a file in order to test the claims that btrfs can heal itself. The article talks about taking the filesystem off, damaging a photo by "flipping" a single bit and then ...
11
votes
3answers
6k views

How to make a btrfs snapshot?

My /home partition consists of an entire physical disk. It is formatted as btrfs. I want to snapshot it. I'm confused regarding subvolume naming, in particular. I am aware that there are similar ...
8
votes
1answer
12k views

Can 12.04 be installed using Btrfs only?

In the past it was not possible to install Ubuntu on a pure Btrfs file system (/ btrfs + swap), will it be possible for 12.04?
5
votes
2answers
687 views

Is it safe to remount btrfs with compression?

I've finally found how to enable compression in btrfs, and would like to do so. However, as my main drive, I'm not really wanting to risk a change that could corrupt the hard drive. Everything I've ...
5
votes
1answer
880 views

How to layout the filesystem for a small SSD and a big HDD?

Since I don't use my laptop's CD-drive I want to put a small (8 GB) SSD into the CD-drive slot (I'll use a caddy similar to this one). I want to use compressed btrfs on the SSD and put all the data on ...
5
votes
2answers
802 views

Is there another way for me to backup /home/user other than creating a subvolume?

I think I'm having difficulty fully understanding subvolumes and snapshots. The /home partition is btrfs. I want to create a "backup" snapshot of /home/user (for example) but user has existed for ...
4
votes
4answers
289 views

My approach for replacing current Ubuntu with newer

I'm working on Ubuntu 13.04 currently. I want to replace it with Ubuntu 13.10. For the same, please approve whether my approach mentioned below is right! I have created a bootable usb stick having ...
2
votes
2answers
387 views

Ubuntu thinks btrfs disk is full but its not

cat /etc/fstab # <file system> <mount point> <type> <options> <dump> <pass> UUID=a168d1ac-4e13-4643-976d-6e47ea1732b1 /boot ext2 defaults ...
1
vote
2answers
391 views

Can I have two distros on the same partition using btrfs?

I'm using btrfs successfully and have luckily separate home and system partitions. Using Ubuntu 13.10 and wanting to test 14.04, how can I do this using the btrfs file system? The system has an EFI ...
1
vote
3answers
7k views

Moving /boot to a separate partition

I've installed Ubuntu 12.04 on a partition with BTRFS as its file system, but it appears that grub2 seems to have some issues with that file system. For some reason it takes it very long time to boot ...