Questions tagged [btrfs]
Btrfs is an integrated filesystem and volume manager, initially developed by Oracle. Use this tag for all questions related to Btrfs' commands and features, as well as volume and filesystem creation and management.
379
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What are the reasons, that the 24.04 installer doesn't create sub-volumes, when using btrfs?
After about 15 years, I'm using Ubuntu again. The Ubuntu 24.04 LTS Desktop Edition looks fine. Admittedly, I wanted to start with Fedora to some extent, but after a fresh installation, there are some ...
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Advice for clean upgrade to 24.04 from 23.10 with RAID1 using mdadm
Looking for advice on how to to a clean install / upgrade from 23.10 to 24.04 on a desktop computer I use for streaming/Plex that also has 2x12 TB (Ext4) drives in RAID1 configuration using mdadm.
...
- 21
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1
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616
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Ubuntu 24.04 server install on software raid1 ssds btrfs
what would be the best way to install ubuntu server 24.04 on mirrored software raid1 (two) ssds btrfs?
I found the tutorial below for 20.04, would 24.04 require different steps? Would 24.04 offer new ...
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Ubuntu 22.04 randomly hangs for ~1-5 seconds
I've been experiencing a frustrating issue with my Ubuntu 22.04 system where it randomly hangs or freezes for about 1 to 5 seconds. This happens intermittently and without any clear pattern, making it ...
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Help, btrfs not mounting, dev extent overlap with previous dev extent
One of my btrfs file system not mount at boot anmore.
dmesg:
BTRFS error (device dm-7): dev extent devid 3 physical offset 725923790848 overlap with previous dev extent end 725923856384
BTRFS error (...
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2
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1
answer
2k
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Timeshift on Ubuntu 24.04 @ subvolume not present
I just did a fresh install of Ubuntu 24.04 LTS on BTRFS. Installed Timeshift and it did not work because the 24.04 system was installed on / without creating BTRFS subvolumes @ and @home. (Ubuntu 22....
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103
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Installing Grub on btrfs /boot when root is on ZFS
I'd like to use Grub for booting my Ubuntu 22.04 system. The system has its root filesystem on a ZFS dataset, it has the usual EFI boot partition, and a btrfs partition that can be used as /boot. When ...
- 215
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528
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How to install Ubuntu Desktop 22.04 to a btrfs partition
I've already seen answers in askubuntu, but for old versions.
Disk encryption and hibernation support would be interesting to have.
I'd like to activate btrfs compression and to install root and home ...
- 245
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2
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2k
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Ubuntu boot stuck at "btrfs loaded crc32c=crc32c-intel zoned=yes fsverity=yes"
I've been stuck on this for 5 days now, so any help would be appreciated>
This is a bare metal server on OVH running Ubuntu 22.04. The OS was installed on a RAID1 array using both "system ...
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2
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Many "UBSAN: array-index-out-of-bounds" about bcache at boot time (kernel 6.5.0)
I installed a btrfs filesystem relying on two devices (for btrfs raid1) that are mappers (cryptsetup luksOpen) of bcache devices (NVME + HDD).
This btrfs filesystem seems to work perfectly.
However, ...
- 31
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59
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GlusterFS help on setting up or a alternative option
I currently have a mergerFS mount set up with 3 disks, but want to add a way for another server so i can use docker swarm and have both hosts with the same data and setup. All I could find was rsync ...
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1
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254
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How do I mount 2 Top level subvolumes on the same BTRFS partition when I have already installed home to a BTRFS disk during installation
I recently installed Ubuntu 22.04 on my machine. I used a RAID 6 volume as my home partition (36 TB). The whole disk is only one partition /dev/sda1 formatted BTRFS mount to /home.
I wanted to create ...
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553
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Snapshots backup problems Ubuntu 23.10
I tried to use Timeshift for a snapshot backup but when I installed it , it can not find my root partition as it is not in a shape like /@
and /@home.
How to get that ?
I am using Ubuntu 23.10.
During ...
- 31
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267
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Unable to use timeshift after btrfs installation
I just installed Ubuntu 23.04 with btrfs installation
the point i do not think everything went great indeed I think the btrfs subvolumes are missing and i do not know how to fix this without losing ...
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Ubuntu 23.04 flutter installer fails with custom partitioning
The new Ubuntu installer consistently fails to complete installation when using custom partitioning. It only works when selecting Erase Disk and using the default settings. How do I fix this? I'm ...
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1
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734
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Mount specific removable media with mount options by default
I run Ubuntu Mate 22.04 and I have a USB mass storage device (aka USB-Stick) that is formatted with btrfs. I know it's partition UUID and label and I want it specifically to be mounted with specific ...
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Advice? External USB harddrive accidentally unplugged (no activity at time). Re-plugged, but `mountpoint`/`findmnt`/`lsblk` disagree if mounted?
[(This really isn't an unbuntu-specific question, but yeah...)]
So I just accidentally bumped and and unplugged the cable on an external USB harddrive.
There was no activity at the time.
It's btrfs (...
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144
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BTRFS "ghost" directories/files are not deleted
I get an "not empty" error when I try to delete a directory with sudo rm -fr /net7.0.
The directory:
➜ ls -la net7.0
ls: cannot access 'x86': There is no such file or directory
total 0
...
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1
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593
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Btrfs raid 1 and Ubuntu server installation
Unlike in the desktop version the server installer doesn't allow to set a mount point without formatting the disc. Is there a other possibility to install Ubuntu server on a btrfs raid 1 array?
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420
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I'd like to run Ubuntu with btrfs subvolumes and the drive must be encrypted
I'd like to run Ubuntu on a encrypted drive. I'd also like to use btrfs subvolumes so I can use the super cool snapshot feature. The installer supports one or the other. I've tried doing an arch style ...
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How do I install Ubuntu 23.04 on an encrypted Btrfs filesystem?
I currently use an encrypted Btrfs filesystem (cryptsetup+luks), which I could set up easily using the Ubuntu 22.10 setup. With Ubuntu 23.04, I only managed to install it on an encrypted LVM+ext4 ...
- 183
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247
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How to install Ubuntu 22.04 LTS on new laptop with 1 TB ssd drive
I will be getting a new laptop and would like to install Ubuntu using the btrfs file system. No encryption required.
I am looking for as much advice, suggestions, procedures others have used as well ...
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how to restore btrfs snapshot backup of root partition with subvolume for home
I have btrfs over luks over lvm on a physical ssd drive.
I've done some crap with apt and break my system. I want to reverse it to previous state.
When i boot on a live usb and decipher my luks drive ...
- 111
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1
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248
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How to recover data from drives in bcache configuration
I'm trying to recover the data in hard drives that was set up in raid and bcache.
I'm using ubuntu 22.04 and just migrate the two hard drives in raid 1 to another computer.
I have no longer the ssd ...
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0
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1k
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Ubuntu Server 22.04: ZFS vs btrfs, each with compression for heavy use email server - which has a lower memory and CPU footprint?
I'm deliberating a situation where I need to use Ubuntu 22.04 for a rather heavy use email server with "infinite" storage for users via Dovecot + maildir.
A lot of the users live in the era ...
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2k
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Move the root from one subvolume to another in BTRFS
I want to install Ubuntu in the BTRFS @root subvolume, but the Ubuntu installer does not allow changing the default subvolumes and installs in @ and @home.
I'm trying to create a @root subvolume after ...
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990
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What does the "@" symbol mean when in front of a directory, e.g. "@home"?
I am trying to follow another post on Ask Ubuntu (Can I have a swapfile on btrfs?, specifically Pilot's answer) and I have run into the problem that I have no idea what @home means. The paragraph I'm ...
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1
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Ubuntu 22.04 Server BTRFS root
I am trying to install ubuntu server 22.04 on a BTRFS root partition but i cannot get past the installer not allowing me to set the root filesystem on a btrfs partition.
My Disk layout:
3 500GB SSDs (...
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392
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Update EFI/grub to dualboot two distribs from single drive with btrfs
I'm trying to create dualboot system with openSuse (15.4) and Ubuntu (20.04).
I had Suse installed on a drive /dev/sda with following structure:
/dev/sda
|- /dev/sda1
|- /boot/efi (vfat)...
- 61
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85
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Have problem using mkfs.btrfs -m single?
Thanks for reading my topic.
When using mkfs.btrfs the default for metadata is dup (duplicate).
Will I have problem if I use mkfs.btrfs -m single?
Users are saying the main use of "-m dup" ...
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1
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3k
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Ubuntu 22.04 server installer does not create btrfs subvolumes?
I installed Ubuntu 22.04 LTS server today and selected BTRFS as for the / partition. Here is the scheme I selected in the custom installation:
/boot 2G ext4
/boot/efi 1G fat32
SWAP 4G
/ ...
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479
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Help combining two BTRFS filesystems converted from ext4
So, I have three hard drives in my computer, and am running Ubuntu 22.04.1
/dev/sda1 and /dev/sdc1 are two internal drives that were originally EXT4, but converted to btrfs successfully with no issues....
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1
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how do i find the total size of BTRFS snapshots
I have a btrfs volume /shares that is snapshotted daily into /.snapshot folder.
I need to find out the real disk use of my /.snapshot folder. Currently it seems misleading becasue it lists each ...
- 186
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2
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467
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Not all BTRFS devices are found during boot
I have recently upgraded from Ubuntu 18.04 to Ubuntu 20.04 with a view to moving Ubuntu 22.04, because I've fallen behind.
My root filesystem is BTRFS and is spread across three devices, some of which ...
- 1,006
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458
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Ubuntu showing "No space left on device" but I still have space
I have Ubuntu installed on a Lenovo laptop with three partitions. The first partition is formatted with an ext4 file system and mounted at root /. It has 248GB of storage allocated to it. The second ...
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3
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2k
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Encrypted disk not available in boot process after distro upgrade
Some time ago I installed Ubuntu 20.04 following this guide with btrfs-luks encryption.
The boot process used to involve only a single passphrase prompt at the very beginning.
Today, after upgrading ...
- 211
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485
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How to fix: Failed to start default target: Transaction for grafical.target/start is destructive with BTRFS errors?
After installing Linux Ubuntu 22.04 on usb-stick some applications did not work (for example: “Ubuntu Software”).
I tried reinstalling this app with this video tutorial: https://youtu.be/9pq7in1DTe8
...
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276
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issues with btrfs with read-only mode
I have following issue,
when I have installed ubuntu with btrfs I have every couple of days issue that disk is in read-only mode.
When I restart my computer everything is fine until next couple of ...
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912
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The package system is broken, possibly caused by kernel version mismatch?
A couple of days ago I found that my Ubuntu 21.10 could no longer perform updates, and at the same time found that the "Ubuntu Software" app finding utility could no longer find any apps at ...
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1
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382
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How to respond to the btrfsck information "well this shouldn't happen, extent record overlaps but is metadata?"
When I run btrfs check --repair to try to fix the following error, I got the following output:
$ sudo btrfs check --repair /dev/sda1
enabling repair mode
WARNING:
Do not use --repair unless you ...
- 121
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177
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apt freezes mid-install/uninstall every time, Ubuntu 20.04.4 LTS
I'm out of ideas how to fix this, it has persisted across reboots, apt updates, apt upgrades, even a sudo dpkg --configure -a
The nice thing is I have two machines both behaving this way, both are ...
- 166
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234
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How to create an image as small as a cloud image?
Creating an Ubuntu 22.04 server image with the official .iso and VirtualBox, for it to be on BTRFS subvolumes, I ended up with more than 4GB of virtual disk.
How do I create an image that is as nice ...
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585
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Mount btrfs filesystem on Ubuntu filesystem
I have next problem - I installed first Fedora on nvme-ssd. Then Ubuntu on usual ssd on same PC.
Now I neither can access Fedora (even if I switch off Ubuntu ssd completely, seems it messed MBR), ...
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504
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Persistent error "BTRFS error (device sda1): incorrect extent count for 153567100928; counted 221, expected 222" which cannot be fixed
When I open the system log in Ubuntu 20.04 I consistently run in this error:
BTRFS error (device sda1): incorrect extent count for 153567100928; counted 221, expected 222
I can't get extra ...
- 121
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186
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how to use existing default.img
I have an unused 222G file /mnt/disc/default.img. It was created a year ago when I was in process of expanding disc space for our container. But I got distracted and never completed the task. Now I ...
- 369
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516
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Help me choose a drive pooling strategy for my NAS / media server
I'm currently running a NAS with a Ryzen 1600, 16GB of memory, Ubuntu Server, a small SSD for the OS and two 8TB HDDs (mounted at /data and /backup). Both drives are ext4 formatted and about 60% ...
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450
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Timeshift backup on btrfs partition fails with error when @home subvolume is included in backup
I installed Kubuntu 21.10 on btrfs partition. By default, it creates @ and @home.
I booted into my new Kubuntu btrfs installation, and indeed, I am able to make a Timeshift snapshot, just as "...
- 454
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0
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164
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Ubuntu 21.10 BTRFS free space on /
I have a problem with free space on btrfs.
fecaloid@fecaloid:~/ssd/Host$ sudo du -h --max-depth=1 /
123M /boot
782G /home
22M /etc
4,0K /media
6,3G /var
16K /dev
0 /mnt
1,2G /opt
du: ...
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1
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2k
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How do I Install Ubuntu, using BtrFS and the Server ISO and still be able to use Timeshift?
To be clear, I'm not trying to install a server; I'm using it to install the base OS and then I install the vanilla gnome desktop package. I use the server ISO because they stopped making the mini ...
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328
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Enable btrfs compression while installing Lubuntu 21.10
I tried to install Lubuntu 21.10 on btrfs partition. It works, but by default compression is not enabled. Is possible to enable compression in installer, or with some parameters for installer ?
...
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