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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Ubuntu 14.04 bad taint on XFS and BTRFS

I've done a fresh install of Ubuntu 14.04 on a physical machine and a virtual machine and after the first reboot (and also at random times) on the screen I get a bad taint message for XFS and BTRFS ...
4
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1answer
659 views

Is there a way to install 13.10 on btrfs and full disk encryption?

I like the fact that the default desktop Ubuntu installer only requires me to check a single checkbox in order to have a fully encrypted disk in the end (which is a requirement within our company, so ...
2
votes
1answer
4k views

Error while starting ubuntu 15.04

After i have upgraded my Dell Latitude E5540 to Ubuntu 15.04 i have the following upon booting up ! Scanning for Btrfs filesystem [FAILED] Failed to start Load Kernel Modules. See "systemctl status ...
2
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1answer
101 views

btrfs: Resultant copy is twice the size of source

I just got an SSD and wanted to migrate my current Ubuntu installation to take advantage of its performance. So I booted to an Ubuntu live CD, mounted source (ext4) and target (SSD, btrfs mounted ...
2
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1answer
1k views

How to mount btrfs subvolume, it isn't working / mounting

I just did: # btrfs subvolume create /@srv then: # btrfs subvolume list / ID 257 gen 73 top level 5 path @ ID 258 gen 71 top level 5 path @home ID 260 gen 65 top level 257 path @srv And added to ...
2
votes
1answer
684 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 ...
1
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1answer
32 views

Can I get SSD rw performance while keeing data security if I combine SSD & HDD in RAID1

I have 2 storage devices; classical slow HDD( 750GB, /dev/sda ) and faster SSD( 128GB, /dev/sdb ). Currently I have installed Ubuntu & Mint on same btrfs partition on SSD ( /dev/sdb5 ). My btrfs ...
1
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1answer
116 views

Re-install and keep home partition with btrfs - lost files

So, I was running Arch Linux with separate / and /home. Both were btrfs partitions, but the whole drive was not managed by btrfs. I decide to install Ubuntu 14.04. I carefully select to format / and ...
0
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1answer
28 views

What's the best way to try newer versions?

I'm running Ubuntu 14.04 LTS in two computers. One is the desktop version, my alternate (and almost) everyday computer, and a second server (headless) version.Eventually the server will be a ...
0
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1answer
93 views

BTRFS on Ubuntu 14.04.3

I know, I know, I know. Bear with me. BTRFS is listed as stable now (wiki page updated Nov of 2015) https://btrfs.wiki.kernel.org/index.php/Main_Page#Stability_status The filesystem disk format ...
0
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1answer
51 views

Boot to Btrfs snapshot in Ubuntu

OpenSuse recently implemented an GRUB entry that allows you to boot directly into a previous Btrfs snapshot of your root. Is there any way of bringing it to my Ubuntu installation? Such feature would ...
0
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1answer
123 views

How to create a snapshot of an encrypted btrfs @home subvolume?

We are using btrfs for its snapshot capabilities so we can backup user home directories. The user home directories are encrypted with encryptfs. We run sudo btrfs subvolume snapshot /home ...
0
votes
1answer
60 views

How to start services only after BTRFS filesystem has been mounted?

I've been trying to make some services only start after a BTRFS system gets mounted, with no success. I have the following in my service start/stop script: # Required-Start: $local_fs $remote_fs ...
3
votes
0answers
214 views

Deleted Items not appearing in Trash folder. Stuck in .TRASH-1000

I have a three 3TB discs in a BTRFS RAID 1 configuration mounted at /mnt/btrfs on my machine. There is a symlink at /btrfs. There are a number of subvols within this, /archive /backups /games /home ...
2
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0answers
120 views

Ubuntu 14.04 bad taint

Any body got the solution for the below question? please share it. I couldn't add comment ,so i created new question here. Ubuntu 14.04 bad taint on XFS and BTRFS Problem: I have installed Ubuntu ...
2
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0answers
223 views

How to remove a write-back EnhanceIO cache on root partition?

I accidentially created a write-back EnhanceIO cache for my root partition. I didn't know that Creating a writeback cache on root device is not supported. This is because the root device is ...
2
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0answers
239 views

upgrade btrfs without upgrading kernel?

We're running ubuntu 14.04.4 LTS with 3.13.0-38-generic kernel and btrfs v3.12 I've read that a min version for btrfs of 3.14 is desirable. Due to one of our programs integrating with kernel we are ...
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0answers
59 views

Install Ubuntu on Btrfs Raid1 pool

I have seen the post Installing Ubuntu on btrfs over multiple drives, but the solution suggested there does not help me. Before using Btrfs in a production environment I wanted to give it a try in ...
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0answers
74 views

What does btrfs do if a disk in my RAID10 dies?

I've just moved from mdadm to "native" btrfs. Under mdadm I could set my email in /etc/mdadm/mdadm.conf and if it had any issues with a disk, it would fire emails at me on boot. This has saved my ...
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0answers
211 views

Ubuntu does not boot successfully with btrfs root partition errors

I have a setup on my laptop in which there are three partitions relevant to Ubuntu: a ext4 /boot partition, a btrfs root partition on LUKS and a swap partition on LUKS. Sometimes, after an unclean ...
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0answers
65 views

Harddisk operations totally brings down my system respond time to its knees

I have massive system slowdowns during harddisk operations on my PC. My Firefox is responding slow, it gets to a extreme at times that it actually becomes a not responding program and greys out during ...
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0answers
224 views

Grub does not start anymore after removing a btrfs partition

I'm using Ubuntu 14.10. Consider the following setup: ubuntu@ubuntu:~$ sudo blkid /dev/sdb1: UUID="0dde146f-ebdc-472d-83a2-48104e23cb8f" TYPE="swap" PARTUUID="00061e41-01" /dev/sdb5: ...
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0answers
85 views

Mount and access similar BTRFS filesystem

Say that I duplicated a disk to a new disk (using dd or similar), and have been using the new disk for a while. But, then I decide I want to view a file or files on the old disk quickly, specifically ...
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0answers
93 views

Multiple Independent BTRFS Volumes

I have 4 x 2 TB drives. I want to set up one pair as a BTRFS RAID 1 volume, which I have done. I want to set up the second pair as a RAID 0 data, RAID 1 metadata volume, which I have not been able to ...
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0answers
366 views

BTRFS cannot delete snapshot - operation not permited

I cannot delete a the btrfs subvolume "2014-07-28" which is a snapshot of the "@" created by the kubuntu installer to serve as the kubuntu root. teneighty@teneighty-MS-7924:/$ sudo mount -o ...
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0answers
1k views

How to get rid of the “scanning for btrfs file systems” at start-up?

At start-up, I see the message Scanning for btrfs file systems. How can I get rid of it? I have tried to remove the package with sudo apt-get purge btrfs-tools, but it just shows a blank screen ...
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0answers
595 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 ...
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0answers
625 views

Installing and booting Lubuntu on ReadyNAS with Btrfs

I have NetGear ReadyNAS Business Pro with 6 Place for 6 Disks I did a hack the box (basically it is a normal PC with Intel CPU) I upgraded the CPU and I used the ReadyNAS OS 6 (which is Debian ...
0
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0answers
12 views

How to install Ubuntu Desktop on XFS or BRTFS using automatic partitioning?

Currently, when install Ubuntu Desktop, and by choosing automatic partition for a brand new hard drive, there is no way to select which file system will be used for it. It auto-selects EXT4 and the ...
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37 views

Will mounting a btrfs volume with compress=no decompress already compressed data?

If not, how may the data be decompressed? Will defrag process decompress files?
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56 views

Upgrading btrfs-progs

I am running Ubuntu Server 14.04 LTS and have setup a btrfs RAID 10 volume with 6 member drives for storing data. I've additionally set it up so that btrfs scrub runs every week using cron so that the ...
0
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0answers
25 views

grub fails to find btrfs-filesystem after adding new devices

Having my server (Ubuntu 15.04) equipped with two 1TB HDDs in raid1, I added yesterday two new 4TB HDDs. After adding those with btrfs device add ... I rebalanced the system with btrfs balance ...
0
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0answers
19 views

How to rollback btrfs snapshot not at the top of the btrfs tree

(I may be using the wrong terms in this question, but I'm trying to use the terminology in the linked page.) The ubuntu wiki explains how to rollback a snapshot that is located at the top of the ...
0
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0answers
49 views

btrfs kenel error

getting some kernel error while mounting btrfs for remove the missing devices. Oct 19 07:31:57 backup kernel: [ 1883.691633] ------------[ cut here]------------ Oct 19 07:31:57 backup kernel: [ ...
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0answers
125 views

BTRFS RAID6 array is broken, how do I fix it?

My Btrfs raid 6 array seems to be broken. When try to mount it I get the following error message. I don't know how or why it broke maybe a power outage or something (it happened during my vacation). ...
0
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0answers
115 views

LUKS + LVM at Install Time

I am trying to use the Ubuntu 14.04.3 LTS installer to create a disk layout that logically looks like this during installation: /dev/sad | +-- /dev/sda1 (/boot) | +-- /dev/sda2 (LUKS) ...
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0answers
57 views

Scanning for BTRFS files systems

After upgrading from Ubuntu 14.04 to a point release, I get a message "scanning for btrfs file systems" at start-up. I presently do not have any drives with BTRFS, (am considering it potentially for a ...
0
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0answers
95 views

Which btrfs features are stable? How to know?

with the adaption of Btrfs by SuSe, Oracle and Facebook Btrfs has prominent support. The question appears to shift from "is btrfs stable for production" to "which set of btrfs-features are stable ...
0
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0answers
79 views

How do I setup JBOD by installing Lubuntu?

I want to setup JBOD (Just a Bunch Of Disks) with Btrfs on Lubuntu 15.04.
0
votes
0answers
51 views

Filesystems not mounting on boot?

I'm getting this fail after rebooting: I tried the instructions here and no dice. I also found a thread about getting rid of Btrfs but I'm not sure if that's a good idea to try. This is all on ...
0
votes
0answers
75 views

Some error messages while boot, after upgraded to 14.04 from 12.04

Recently I upgraded to 14.04 from 12.04. Now I see some error messages during every startup. Could anyone please let me know, that why am I seeing such messages? The error message as follows : ...
0
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0answers
45 views

How can I make proper use of subvolumes in btrfs?

In the past, I've always used three ext4 partitions to fulfill my needs: /dev/sda2: / /dev/sda3: /home /dev/sda4: /mnt/Data Right now, I'm using Ubuntu 15.04 with the btrfs filesystem. After ...
0
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0answers
73 views

Ubuntu not starting after resizing partition

my (K)Ubuntu 15.04 on btrfs ran out of space. So I fixed the issue and also resized the partition (including the btrfs volume). The next time I tried to boot the following lines showed up: Loading ...
0
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0answers
107 views

How to copy a btrfs subvolume along with it's snapshots to a different drive?

A drive contains /@home along with snapshots /snapshots/@home-2015-01-01, .... How do I move all of them to another drive without duplicating the data in the snapshot (i.e. simple rsync -ax would lose ...
0
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0answers
90 views

XUbuntu 14.04 with btrfs on SSD

I have a PC with two hard drives: SDD and HDD. On SSD I've installed Xubuntu to BTRFS partition , also I have BTRFS on second drive. The issue is that during boot I'm waiting for a long time (I guess ...
0
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0answers
50 views

How to hide btrfs devices in nautilus dynamicly

According to this question and answer: How to hide btrfs devices in nautilus? Is it possible to do this dynamically? Devices like /dev/sdc1 might not be the same on next boot, so a static ...
0
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0answers
387 views

SSD drive errors in dmesg but smartctl says all is ok

I am not extremely experience in SSD monitoring so not sure if there is an issue or not, but yesterday I noticed in dmesg a number of errors being generated from my root disk (/dev/sdb). These seem to ...
0
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0answers
76 views

Why does my computer always need to scan for my btrfs partitions even though they are always in the same place?

I use btrfs for the / and /home partitions of my filesystem. All of the btrfs partitions I use are listed in the fstab, with the appropriate block devices, and their mounting configuration and ...
0
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0answers
52 views

How to properly restore a btrfs snapshot?

My / and /home partitions of my Ubuntu 14.10 system are formatted with btrfs. What is the proper way to restore a snapshot I made with out using any third party software?
0
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0answers
2k 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 ...