2
votes
0answers
18 views

How can I prune my BTRFS backups?

I have a BTRFS backup system where I take daily snapshots (btrfs subvolume snapshot) and serialize them into incremental change files based off the previous days backup (btrfs send -f backup.date ...
1
vote
1answer
19 views

Are re-combined BTRFS incrementals identical to the original?

I have several systems running btrfs, and I'd like to use the btrfs subvolume send/receive features as a backup solution. I want to send daily incrementals to remote as efficiently as possible. That ...
0
votes
0answers
19 views

Recover a mbox file from a overwritten btrfs partition

I had 14.04 on a hard drive using btrfs as the file system. One morning, the file system randomly failed and I couldn't boot into it anymore. I loaded up a live CD and extracted all the files I needed ...
0
votes
0answers
32 views

Install on a large btrfs partition with two sub volumes

I have a computer with a large btrfs partition containing two sub volumes / and /home. They are both compressed. There's also a separate swap partition. the /home partition has data on it and I hoping ...
3
votes
0answers
89 views

btrfs two Data sections and enospc error when trying to convert

I currently have a btrfs filesystem setup on an ubuntu 14.04 setup like this: # btrfs fi df /storage/ Data, RAID1: total=2.33TiB, used=2.32TiB Data, RAID0: total=2.00GiB, used=2.00GiB System, RAID1: ...
1
vote
0answers
64 views

Strange output of btrfs fi df after converting from RAID0 to RAID1

I just converted my 3 disk btrfs filesystem from RAID0 to RAID1 and balanced it. At first the data was all in the RAID0 filesystem, so running btrfs filesystem df showed something like this: (XX are ...
1
vote
0answers
281 views

ZFS vs btrfs on Trusty [closed]

I have been running Precise with ZFS on root for the last two years on a home file/media server and HTPC. I am looking at rebuilding the server using Trusty and I am wondering if I should be using ...
0
votes
0answers
207 views

btrFS RAID5/6 Understanding space usage and usability

Im currently thinking about experimenting with btrfs with my workload in place of ext4. Right now I have a few drives on order. I want to setup btrfs on the first drive and slowly expand the FS ...
0
votes
0answers
22 views

Got a corrupt BTRFS partition, but is still usable, how to convert it to ext4? [duplicate]

I've got a corrupt btrfs partition, and also because of its low speed, I am thinking of 'converting' it to ext4, how can I convert a root partition from btrfs to ext4 without loosing the ability to ...
0
votes
1answer
135 views

btrfs - did I just turn RAID1 into RAID10?

I set up a btrfs partition using two 3 TB drives in RAID 1: $ mkfs.btrfs -m raid1 -d raid1 /dev/sdd /dev/sde $ mount /dev/sdd /media/media Copied a bunch of data onto the partition, with the ...
1
vote
1answer
94 views

Ubuntu server with btrfs root and confusion with the @ symbol in subvolume path

Please note the following commands: user@ubuntu:~$ sudo btrfs subvolume create /srv/audio Create subvolume '/srv/audio' user@ubuntu:~$ sudo btrfs fi show Label: 'BTRFS_STORAGE' uuid: ...
4
votes
2answers
7k views

Which is better for a home media server: zfs or btrfs or LVM/md? [closed]

I'm looking at building a new home server and would like a flexible filesystem. Both btrfs and zfs are interesting. I want to be able to do soft raid and have flexible solution allowing me to expand ...
0
votes
0answers
15 views

Cant resize partition with gparted due to failed btrfsck? [duplicate]

I cant resize my home partition with gparted. Here is the output that causes gparted to fail http://pastebin.com/AXWCTaeK
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 ...
0
votes
2answers
109 views

Will Ubuntu 13.10 boot if I enable compression on / which is a btrfs volume

I installed Ubuntu 13.10 on btrfs and the installer created the following fstab: UUID=0eff8daf-5924-4a1f-922c-ec82ec594dc0 / btrfs defaults,subvol=@ 0 0 ...
0
votes
1answer
187 views

btrfs mount options not working

I'm running Ubuntu 12.04.3 LTS I converted my data drives with btrfs. I first did apt-get update before installing btrfs-tools. Unfortunately, that still only installed version 0.19 I can mount the ...
2
votes
2answers
113 views

Missing 50GB on my 100Gb harddrive

I have a 128GB harddrive formatted with the btrfs. However, for some reason I'm missing around half of the disk space. Do any of you have any idea of how to fix it? See this screenshot for details ...
0
votes
1answer
815 views

Installing Ubuntu on btrfs over multiple drives

When I installed Ubuntu 13.04, I managed to combine a couple of outdated askubuntu answers, as well as some of the btrfs documentation in order to figure out how to install Ubuntu over two SSDs using ...
0
votes
1answer
291 views

Use IOzone to check read/write performance of ext4 and btrfs?

Can someone help me to use IOzone filesystem benchmark tool on Ubuntu to check the performance of ext4 and btrfs filesystems? I have installed Ubuntu into a VM.
2
votes
2answers
2k views

Creating btrfs subvolume like @ or @home

Being intrigued by btrfs I decided to toy around with it in a VM. Installation works great as long as I remember to put /boot on a separate partition and it all seems to work fine. What I would like ...
3
votes
1answer
373 views

Are btrfs updates rolled in to 12.04 LTS (3.2) kernels?

Many BTRFS bug fixes and updates are being applied to the 3.10 Kernel by the filesystem maintainers - is Ubuntu actively pushing those fixes and updates down to their current LTS kernel (3.2.0-X)? ...
1
vote
0answers
1k views

Errors during start-up: “Scanning for Btrfs filesystems”

I have installed Ubuntu 12.10 desktop on three systems and one virtual machine. On every system I have opted for a single Btrfs partition. During start-up I get the following two error messages. It ...
11
votes
2answers
3k views

How can I convert an ext4 partition to btrfs (or other file systems) without losing data?

I wish to convert my current /home partition to BTRFS (or other file systems) without losing data if possible, what steps should I take for this? is it safe?
2
votes
1answer
483 views

Ubuntu Server 12.04 start fails after update

I did an system update on Ubuntu Server 12.04, which requested a reboot. Since that, the system never reaches the login. It hangs on: mount: mounting /dev on /root/dev failed: No such file or ...
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 ...
2
votes
2answers
1k views

How do I install the btrfs-restore utility on 12.04?

I would like to install btrfs-restore on Kubuntu 12.04 apt-cache search btrfs-restore returns nothing. Google "ubuntu download OR install btrfs-restore" returns nothing useful. Also, where do I get ...
1
vote
5answers
4k views

How do I recover a BTRFS partition that will not mount?

The installation for 12.04 kept failing, and the solution was to have the installer ignore the btrfs partition that I have previously been using for /home. Now that it's installed, I've been trying ...
3
votes
1answer
2k views

Block-level deduplicating filesystem

I'm looking for a deduplicating copy-on-write filesystem solution for general user data such as /home and backups of it. It should use online/inline/synchronous deduplication at the block-level using ...
15
votes
5answers
10k views

Is it safe to use Btrfs?

Is it safe to use btrfs in Ubuntu 12.04? Linux kernel version: 3.2.0-24-generic Architecture: x86_64 (64-bit)
2
votes
2answers
616 views

Home server filesystem

I'm planing to build a home server to act mainly as a uTorrent download and file server for me and the people I live with. I have come up with the following filesystem configuration and I would like ...
2
votes
1answer
2k views

Converting to btrfs from md raid5 with lvm

I have decided to start the transition to btrfs this weekend. I have a desktop with one md raid1 which is used for boot, and one large md raid5 for everything else. On top of the md raid5, I have LVM ...
1
vote
1answer
609 views

How can I move a btrfs partition? (after resizing it)

Is it possible to move a btrfs partition (after I shrinked it)? (e.g. as described in How can I safely resize (shrink) a BTRFS partition?) I need this to grow the partition before the btrf partition. ...
1
vote
2answers
1k views

ubuntu 11.10 btrfs errors after every reboot

I installed a new system when oneiric was released I am also using gnome classic and have the following layout: /dev/sda3 on / type btrfs (rw,noatime,relatime,subvol=@) /dev/sda3 on /home type btrfs ...
4
votes
1answer
987 views

How do I recover a BTRFS partition formatted by mkfs.btrfs?

I've accidentally formatted one of my partitions with btrfs 0.19 filesystem, on 11.04, kernel 2.6.38-8-generic. The command issued was: mkfs.btrfs -L EADS-old /dev/sdd2. After this I didn't write ...
12
votes
2answers
3k views

btrfs partition won't mount after upgrading 64bit Ubuntu 11.10 laptop

I have tried many ideas from the net, but none of them work. This looks correct and in good order **sudo btrfs filesystem show /dev/sda2** failed to read /dev/sr0 Label: none uuid: ...
5
votes
1answer
868 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 ...
6
votes
2answers
8k 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
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 ...
2
votes
1answer
814 views

Does btrfs support thin provisioning and quota management like zfs?

I checked the btrfs command and didn't find anything related to thiese features.
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 ...