Ubuntu :: Btrfs Ready For Home Use?
May 16, 2011
Okay, so I found a couple articles about the new BTRFS for Ubuntu that became available on 10.10, and I was wondering if some people could clear some stuff up for me. I am going to be upgrading my desktop box from 8.04 soon (I know,long time coming, but I had some hardware compatibility issues with recent releases that have been addressed on my end) I'm pretty new to a lot of these terms, so a detailed explanation would be awesome if you don't mind.
1 - Is this file system ready for the home user?
2 - Are there significant performance gains over ext4 and is it stable? If not now, will it be in the future?
3 - When a new subvolume is created, does that act like a partition? For instance, would a home folder in it's own subvolume act like home on a separate partition in the event of a reinstall or upgrade to the root filesystem? If not, what would be the specific advantages to using a subvolume?
4 - When creating a snapshot, is it bit for bit or a compressed image?
5 - Does compressing the root filesystem save a significant amount of disc space?
6 - Is there anything else that would be important to know about this filesystem?
If I have some things confused or misunderstood, it is because I am just starting to understand how some of the foundational stuff in my OS works
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Jan 30, 2011
I've been seeing issues with this for the last few months when getting kernel updates. Never on every reboot, but this last time has been somewhat stubborn. Usually I can go back to the previous kernel, boot, reboot and I'm good. But not this time.My fstab:
Code:
# /etc/fstab: static file system information.
#
[code]....
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Aug 20, 2011
after my recent update in ubuntu 11.04 64bit that installed a new kernel, my first boot into the os stalled for a long while. i think it said it was checking the disk but did not show any signs that it is working. i left it for half an hour or so and had to force restart it.
from then on, my ubuntu gives a black screen when i boot. choosing recovery mode it tells me it cannot find /home saying /home is either not ready or not there.
i tried to do a fsck and it says fsck.ext4 Unable to resolve UUID=e8629....not impt. probably the /home partition that is messed up. i used gparted to look at my partition and true enough my /home partition is now an unallocated partition space.
this is my setup. i have a win 7 ubuntu dual boot
Device Boot Start End Blocks Id System
/dev/sda1 1 1913 15360000 27 Unknown
/dev/sda2 * 1913 1926 102400 7 HPFS/NTFS
/dev/sda3 1926 71017 554980469 7 HPFS/NTFS
[Code]....
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Oct 15, 2010
On rebooting or initial start up intermittent problem:"The disk drive for /home is ready yet or not present." It seems to happen on a cold startup and if a change is made in init/default file. (addition of the numlockx package modifcation.) So far a second or third restart will find the directory and complete the start-up.
On a 120 gig hard drive I have these partitions:
4 gig swap
25 gig /
90+ gig (the remaining space) /home
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Oct 10, 2010
I am about to setup a computer with Maverick. This will be for experiment use only, there will be nothing of any critical nature on it. Should I consider using the BTRFS, yes or no ? What would be the advantages/disadvantages (if any) on using it as opposed to EXT4 ?
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Mar 15, 2011
I'm just diving in to figuring out how to partition/utilise BTRFS.I am used to just installing with EXT4 and carving out a / and a /homeBut, from what I understand, this isn't the case with BTRFS?I know you have to create a separate /boot as grub doesn't support the file system.But, with BTRFS, we just create a / and /home and others would then just be subvolumes?What happens if I want to reinstall? I have liked being able to just wipe / and reinstall the OS, leaving my personal files in tact. Does this still happen if the /home is just a subvolume? Hopefully that makes sense
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Apr 7, 2011
I decided to try playing with btrfs. I think you could do lots of fancy things with that. One thing puzzles me though - I can make a snapshot or a subvolume the default volume to mount (using btrfs set-default , but how do I then remove that subvolume default so that the base filesystem is the default mount again.
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Jul 15, 2010
I upgraded my 9.10 installation to 10.04 and decided to try out btrfs on a some spare drives in the system.sudo mkfs.btrfs -m raid0 /dev/sdb /dev/sdc /dev/sddthe only way the system sees the btrfs array is by running btrfsctl -a and then mounting /dev/sdc. but that has to be done in userland, not at boot. if i try to mount it via fstab, ubuntu won't load because it can't find the mount point./dev/sdc /Images atasum,thread_pool=128,compress,rw,user 0 0so where am i going wrong? I tried mounting via the UUID also but that didn't seem to work for me either.
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Jul 24, 2010
During the installation of Ubuntu 10.04 the partitioner was wrongfully configured to see a functioning btrfs partition as ext4 (without reformatting it). Thus the installation process got stuck at 5%.Installer was run again ignoring the btrfs partition.btrfs-tools was added to the new 10.04, but the btrfs partition is now recognized ast4 with lost+found folder on it.Tried to add the btrfs to etc/fstab as btrfs but t won't mount.Can the partition/filesystem type be changed so that this is actually recognized and mounted as btrfs, hoping my data is still on it somehow?
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Jun 9, 2011
I will be installing Fedora 15 on my work laptop this weekend and am wondering: Could I use BTRFS as the default filesystem? Why or why not?
My default layout looks like this:
/boot
LVM
swap
/
/home
This would mean that all the LVM partitions would become BTRFS. Or maybe only the /home would become BTRFS.
Different threads state that you shouldn't use BTRFS yet on production systems, but there are also plans to include it in F16 as the default FS.
Why should (or shouldn't) I use BTRFS as opposed to EXT4?
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Dec 28, 2010
I'm running Maverick on an older Stinkpad. I have a btrfs /home as a second partition on the internal HDDand a brand shiny new 3TB external USB western digital drive also formatted btrfs. I'm having a problem whenever I hibernate/suspend the laptop by closing the lid and start it back up later, the external drive won't remount unless I do a complete reboot. I have no entry in /etc/fstab for the external drive.Quote:Unable to mount "blah" DBus error org.gtk.Private.RemoteVolumeMonitor.Failed: An operation is already pending
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Sep 20, 2010
I'm a big fan of ZFS on FreeBSD (I've been using it on my home server since before it got stable; bleeding edge, baby!) and I'd like to try out btrfs to see how that's evolving. Since it's still largely in development, none of the usual mainstream distros have btrfs as an option. I haven't used Linux in a bunch of years, so I don't really know what my best options are for giving btrfs a try.
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May 18, 2010
Was wondering if it's possible to set up a single disk with btrfs and then later on convert it to a 'mirrored' array?
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Sep 8, 2015
I have installed Debian through the Debootstrap process using the ext4 fs for root and it worked without a problem. When I tried to install Debian mounted on btrfs subvolumes, there are problems mounting root while booting so it crashes... Any clue if Debian supports btrfs subvolumes?
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May 25, 2011
I hear that the non-live version of F15 has an option to choose the btrfs filesystem. I only see the DVD version as a non-live version and it's 3.4 Gigs. Is there a non-live CD version available?
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May 25, 2011
is it possible? If I select btrfs as /boot partition I get this error:
"Bootable partitions cannot be on an btrfs filesystem"
edit:should I use this guide? [URL]
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Jul 28, 2011
I'm currently running the XFCE Spin of Fedora 15 (Xedora, as I like to call it (; ) on 64 bit, so sometimes I need a 32 bit environment to try stuff out.
I recently installed Linux Mint on a partition formatted to btrfs, and this is where my problems start, as I have no idea how to add this installation to my existing GRUB configuration. The grub.cfg on the Mint partition looks like this (GRUB2 btw.):
Code:
#
# DO NOT EDIT THIS FILE
#
# It is automatically generated by grub-mkconfig using templates
# from /etc/grub.d and settings from /etc/default/grub
#
[Code].....
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Jun 28, 2010
Currently have multiple small DNS-323 NAS-in-a-box that need to be replaced with a single storage server.
Since the setting is for an advanced home server (2-3 simultaneous clients max) that will hold movies and application/game ISO's, I was originally going to go with a simple RAID6 on freenas. As I learned about silent data corruption, and with a max of 3 simultaneous users, I don't see a need for a hardware raid processor. So I gathered that software RAIDZ (RAIDZ2) based on ZFS or BTRFS that prevent silent data corruption would be a better match (please correct me if I am wrong).
NEEDS: The needs (in addition to prevention of silent data corruption) are basically online capacity expansion (OCE), and 2+TB volumes (64bit LBA); with a preference for the ability to spin down idle drives. I'm going to make the assumption that any solution I go with will allow me to read/monitor actual SMART drive data.
STUMBLING BLOCK(S):
1. Would someone validate the (perhaps mistaken) assumption that since BTRFS is integrated into the latest Linux kernel, it is mature enough for NAS candidacy.
2. Please validate: Forward-compatibility of BTRFS has been stated (no need to reformat with subsequent BTRFS updates).
3. Am I missing any NAS software (open-source or otherwise) that would meet these requirements and provide a nice pretty graphical interface?
4. What software solution would you recommend? (btrfs on xxxxx? zfs-fuse? linux+xfs (+mdadm)? ..?)
5. What are my next steps?
Accumulated hardware for project:
SERVER: 3u chassis with 16hot swap trays. Tyan S5360G2NR i7520 mainboard. Single Intel 2.8Ghz CPU (dual-capable). 4GB ECC RAM (do i need more?). Dual hot-swappable 550W psu. CD-ROM
DRIVES: Eight 1.5Tb SATA drives, plus an additional four that are in-use in the DNS323 that I will migrate over using OCE. Four 750 SATA drives that are also in-use and can be migrated over via OCE. One 16Gb SATA SSD, intended for Boot OS and logs.
INTERFACE CARDS: Two 3Ware Escalade 9500S-8 8Port SATA RAID (PCI-X, 64bit) [can change these to something else].
UPS: 1500VA
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Mar 20, 2011
I was interested in the idea of the btrfs subvolumes, so I made a virtual machine and installed Slackware as per the instructions here: [URL] It all went very well, but when I tried to switch from the huge kernel to the generic kernel and use the initrd.gz generated from step 29 (except that I used 2.6.37.4-smp instead of whatever's there) in lilo.conf, it failed to boot. I also noticed that in the instructions themselves, the poster doesn't actually add the initrd.gz to lilo.conf, so I'm guess the huge kernel has everything it needs to boot properly.
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Jul 11, 2010
I've just bought a new SSD hard drive:Kingston SSDNow V-Series SNV125-S2/128GB 2.5'' 128GB SATA/300The question is which filesystem whould you recommand and why?BTRFS vs NILFS2 or EXT4?If you choose ext4 would you enable jurnalling?I'm very close to choose Btrfs.Any experience with running any of these on your SSD?
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Jun 21, 2011
what do I have:2x 150GB drives (sda) on a raid card (raid 1)for the OS (slack 13.37)2x 2TB drives (sdb) on that same raid card (raid 1, too)2x 1.5TB drives (sdc,sdd) directly attached to MoBo2x 750GB drives (sde,sdf) attached to MoBo too.if i got about it the normal way, i'd create softRAID 1 out of the the 1.5TB and the 750GB drives and LVM all the data arrays (2TB+1.5TB+750GB) to get a unified disk.If I use btrfs will I be able to do the same? mean I have read how to create raid arrays with mkfs.btrfs and that some lvm capability is incorporated in the filesystem. but will it understand what I want it to do, if i just say
Code:
mkfs.btrfs /dev/sdb1 /dev/sdc1 /dev/sdd1 /dev/sde1 /dev/sdf1
probably not, eh?
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Feb 9, 2015
My goal ist to install Debian Jessie on a drive with a btrfs subvolume scheme. This is my first time using btrfs and also my first Jessie installation.
My experience is, that partman creates btrfs file systems but doesn´t support btrfs subvolumes (why not?).
I successfully created btrfs subvolumes manually in a shell session during ("expert") installation and manually mounted them to the desired mount points in /target. Installation went through until grub2 installation, which failed.
Is there a best practice to install Debian (Jessie) on a btrfs file system with subvolumes? I want to use subvolumes for /, /home, /var/log and /var/lib/mysql.
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Aug 6, 2010
Im using parted when doing a new disk. If the disk is ext[234], xfs, jfs, parted displays the partition correctly, but if the partition was formated using reiser4 or btrfs the "File System" part there is nothing, like there is no formating done to the partition.
This is how Im using parted:ex.: parted -s /dev/sda print
Does anyone knows a patch to fix this issue?
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Sep 11, 2011
I want to convert the file system on my boot drive from ext4 to btrfs.
I have converted by 2nd drive, unsure of how to convert the boot drive and partitions.
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May 6, 2011
Things were fine for a couple months until this most recent dist-upgrade. The new grub has an incompatibility with BTRFS which nearly caused me to lose everything, as grub couldn't set up the boot system since it can't see the BTRFS partition. I worked for days trying to get help in the linux-btrfs listserv, but they don't seem to understand Debian/Ubuntu, and they kept referring me to Debian and grub devs. I asked them how those devs will know any more about BTRFS than they do, but there was no reply.
They said the new grub (1.99~rc1-13) will fix it, but unfortunately the Debian package management system was jammed by BTRFS as well and I couldn't install/deinstall anything. I finally had to unpack the grub-pc .deb and manually install it, but guess what? It didn't fix the problem. I've now had to completely rebuild my system without BTRFS. This has cost me days, which I cannot spare. I realize it says 'experimental' on the BTRFS website, but it is in the stable kernel, and there is not a word anywhere about it being completely non-functional in Debian/Ubuntu.
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Jul 29, 2011
In my efforts to resize my BTRFS Partition, I accidentally unmarked my BTRFS partition as being BTRFS, and can't mark it back as I can't find the numeric ID for BTRFS and how to apply.
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Jan 12, 2010
I have my Epson C46 working on my Ubuntu 9.10 machine, my XP machines are showing the printer as ready and will send a test page to the Ubuntu printer but it doesn't arrive at Ubuntu - doesn't show in the print job list on Ubuntu but does in XP??
File sharing is now working in both directions.
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Feb 1, 2011
I've been trying to resurrect an old laptop (think Pentium 800 old ) by installing Ubuntu on it. I thought I was in the clear after downloading and booting, but then I get stuck at the 'Ready When You Are' screen. This is Ubuntu 10.10I have seen previous such issues caused by caps in the username, but I've not been prompted to even enter a username yet so I really don't know what could be causing this, and I don't know where to begin searching.
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Apr 10, 2011
I have recently bought a printer hp deskjet d1663 but I can not print with ubuntu 10.04. The computer recognition the printer and it say printer ready to print but then it does not print. What can I do?
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Apr 22, 2011
I keep trying to install 10.10 and it will copy all files and mostly install but when it gets to ready when you are, it just stops and wont keep going. I've filled out everything but it wont let me keep going forward.
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