Questions tagged [zfs]

ZFS is an integrated filesystem and volume manager, originally designed by Sun

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zfs users recognize the output of "zfs list -r" for me one pool is very different

any zfs user is familiar with the output of "zfs list -r" On one pool "zfs list -r poolX" It lists all the the snapshots in every zfs filesystem on that pool, and nothing else. I ...
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With 2 zfs root system 10_linux_zfs fails to generate grub menu [closed]

Up till approx. 2022 april I had no problem. 2 weeks ago I observed that I could not boot since the boot entries generated by 10_linux_zfs were missing. I have Calculate Linux installed with 1 pool ...
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How to redo my zfs partitions so I can hibernate my laptop

I cannot hibernate my new laptop because I cannot seem to make a hibernate file. It appears as though when I first setup my laptop with ubuntu, I used zfs and selected the defaults. Now, I don't have ...
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Ubuntu 22.04 LTS with zfs filesystem and swap: deadlock! How to solve?

So after spending weeks configuring my Ubuntu 22.04 LTS, installing all the things I need, making it exactly as I wanted, I started experiencing some random freezes of my netbook (i5 11th gen with 8gb ...
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How to Configure Ubuntu 22.04 (ZFS) for auto LUKS unlock on-boot via USB key

Bit of a tricky one. 100 bounty up for grabs!! Edit: bounty expired. soz. Upon finding an answer to this question, this will be formalised into an article / howto for the internet to benefit from, as ...
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Data backup and restoration guidance via zfs

I am creating a backup & restoration program to backup and restore all data on demand. Only Ubuntu installed onto zfs is supported as the backups would start as zfs snapshots. The speed of SSD's ...
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Creating and mounting a second ZFS drive in Ubuntu

I have two discs: a SSD and a regular hard drive in my laptop. Ubuntu installed on the SSD drive which is 128GB. The second hard drive is 1TB. I installed Ubuntu using ZFS and I would like the second ...
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How to add a second zfs hard drive to laptop

I have installed Ubuntu 22.04 on a laptop with a SSD 128GB drive. The SSD drive uses the ZFS filesystem. I have also installed a 1TB 'regular' hard drive. When I installed Ubuntu, I did not get the ...
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Is there any significance to the zfs USERDATA dataset suffix?

I recently installed 22.04. My home directory is on the zfs dataset rpool/USERDATA/me_xxxxxx (where xxxxxx seems to be a random-ish string?). The same suffix is used for the root user's dataset. Is ...
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Home directory reset, all data lost after restart

After starting my ubuntu 21.10 machine this morning, I find that the home directory of one of my user accounts is completely reset to the state of a new user. All my files are gone and ubuntu presents ...
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Automatic pruning of old ZFS snapshots

So I selected ZFS when installing Ubuntu 22.04 because I wanted to try it out. I love the snapshot feature, however I found that due to daily apt-upgrade it accumulates a lot of snapshots consuming a ...
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Disable default auto zsys snaphots for other users from root

I want to allow users choice of having auto save state by zsys of their own datasets, but would like it to default to being disabled when I create a new user, how would I go about doing that. Is it ...
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ZFS Scrub does not finish but repeats over and over again

Lately when running a zpool scrub mypool it gets to about 96% and then it resets to 0% and starts again, I waited to see what it would do again and the same thing happened it resets back to 0%. The ...
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Ubuntu 22.04 Jammy Jellyfish desktop on ZFS boots to busybox prompt after grub: initramfs does not contain zfs modules

I have a system that has had jammy jellyfish installed for a few months, it's installed on zfs through the regular desktop installer. I did a routine apt update and rebooted and it went straight to ...
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How can I add a zfs drive pool to the Files gui?

Ubuntu 20.04 up to date. ZFS drive pool configured as /raid/ However this pool doesn't show up in the Files GUI as a location, just my two unpooled hard drives show up. How can I get the pool to show ...
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Libreoffice snap, symbolic links to zfs not accesable

I have a mirrored zfs drive, for archive data and working documents. I have linked my ~/Documents to /zpool/user/Documents, and also ~/Pictures, etc. When I install LibreOffice using snap I can not ...
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Trash Folders In ZFS Snapshots Recognized As Official Trash

When I run gvfs-ls trash:// or go to Trash in nautilus, I see the trash from my ZFS snapshots. This should not be happening. I'm sure this is impacting performance issues I have been seeing lately. ...
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Bad perfomance on Ubuntu server 22.04 wit zpool on mirror zfs

have a HP miniserver Gen 8 with 3T mirror zpool with zfs. Installed Ubuntu server 22.04 and notice a remarkable lower performance. CPU activity is between 50-100% as soon as there is any activity on ...
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Ubuntu 20.04 - Unknown entry when using zfs list

I currently have a raidz2 pool on my home server : While doing some troubleshooting for slow performance on my array, I used the zfs list command, and noticed a lot of entry "under" my ...
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encrypted ubuntu

I am new to zfs. I read, and sucessfully tested, that encrypted zfs is working. This is a professional laptop so full encryption is required. Current (20.04) setup is separate / and /home, both luks ...
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Why does installing zfsutils-linux uninstall zfs-fuse?

I'm using 21.04 on amd64. Why do these packages conflict? Which one should I use? All I want to do is mount a zfs pool on /var/snap/snapd. Nothing fancy. root@kvm:/var/snap/snapd# apt install zfs-fuse ...
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How to clean up (remove) all old system snapshots?

Every time I install or update software, a snapshot is being created in the zfs rpool, and occasionally in the bpool. After I confirm that I am still able to boot and everything is working, I wanted ...
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Ubuntu Root on ZFS

These questions are in regard to this article: https://openzfs.github.io/openzfs-docs/Getting%20Started/Ubuntu/Ubuntu%2020.04%20Root%20on%20ZFS.html I intend to follow those instructions using an ...
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Why is the gui/display not loading at boot (Ubuntu 20.04.3 LTS (GNU/Linux 5.13.0-27-generic x86_64) on my home server with zfs?

(Please allow for my lack of Linux knowledge...) When powered up, my home server desktop pc ('boite') loaded Ububtu (20.04.3 LTS) and its pool of 4 zfs NAS drives...however the screen display was ...
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How do you use the zfs encryption recovery key

I've installed ubuntu 21.10 using the graphical installer and I chose to use a ZFS root install with encryption using the GUI options (without doing the advanced stuff). At some part of the process I ...
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Ubuntu ZFS - /boot/efi/grub mounted at /boot/grub in fstab - normal?

I'm noticing a "new" line in fstab I've never noticed before, and I'm wondering if it has to do with this installation being on ZFS AFAICR /boot/grub has always existed independent of the ...
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Ubuntu 21.10 encrypted ZFS unbootable, inaccessible

I am in the unfortunate situation of having installed exactly this configuration in the middle of December 2021. Ubuntu 21.10 encrypted ZFS with root and boot both encrypted, with luks. All done with ...
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Ubuntu 18.04. LTS: ZFS-installer wrong partion on boot?

I hope someone can help me out with my ZFS problem or has some suggestions to use ZFS for the Ubuntu installtion or some other way. I used the zfs-installer from here and successfully installed it ...
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Error "update-grub" returned an error: exit status 1

Everytime I want to install or remove some package via terminal with sudo apt-get install ... or sudo apt-get remove ..., I finally get the following error: ZSys is adding automatic system snapshot to ...
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files moved or erased from zfs drive don't free space on the drive

I'm using ubuntu 21.10, installed anew with zfs filesystem. If I delete some files, and then empty the trashcan, or move them to another (external) drive) this doesn't free up space on the drive. ...
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After upgrading from 18.04 to 20.04, grub does not boot to latest kernel (and ZFS is broken)

On a remote server (only access via ssh after booted), I am having troubles after upgrading from 18.04LTS to 20.04.3LTS: system reboot on old rescue kernel: and zfs is not working anymore (so all my ...
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How to rollback entire system and not particular datasets?

I run zfs rollabck rpool/ROOT/*****@autozsys_hash on all datasets for one particular hash and it completely broke the system. I haven't recovered it yet, but I figure that this must be incorrect way ...
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How to configure autozsys, so that it doesn't destroy zfs snapshots older than X time?

I think that autozsys destroys snapshots older than a month and I'm wondering if it's possible to extend this (make it for example persist 3 months worth of snapshots). I couldn't find any ...
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ZFS: Backup a disk with mountpoints that conflict with backup computer?

I'm working towards backing up a laptop running Ubuntu on ZFS. I have a backup server also running ZFS on some ancillary volumes (not the root). I made a snapshot of bpool today and sent it to the ...
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Ubuntu 21.10: ZFS pool automount not working (updated to 21.10 last night)

setup: Ubuntu 21.10 (with latest updates). The problem happened even before 21.10 was out. I just never bothered fixing it until now. zfs version is: root@myserver:~# zfs --version zfs-2.0.2-1ubuntu5....
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Ubuntu with root on ZFS boot and motherboard change

I'm soon changing my motherboard (and CPU and RAM btw.) from Asrock J5005-ITX to the new one with Intel's B660 chip. I have Ubuntu Server booting root from ZFS pool. How should I prepare for the ...
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zsys-commit.service fails with "couldn't promote dataset ... not a cloned filesystem"

Problem After some issues with the system state I reverted to a previous state snapshot. Since then I systemctl is-system-running is in degraded state (I have it in my prompt). The only failed service ...
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root disk formatted with ZFS

I am trying to install Ubuntu Server 20.04 or 21.10 with ZFS on root disk. I can't find an option to use ZFS (just xfs and btrfs) in the installer. Is there a way to boot from a ZFS formatted disk?
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ZFS bpool is almost full; how can I free up space so I can keep updating my system without errors?

I am running Ubuntu with ZFS on root, and my bpool seems to be almost full. Output of zpool list bpool: NAME SIZE ALLOC FREE CKPOINT EXPANDSZ FRAG CAP DEDUP HEALTH ALTROOT bpool 1....
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I get "permission denied" accessing a samba share

I'm new here, and after some researching I found that I 'think' I need help. I hope I am doing correctly and maybe my english is not perfect, but I try. So let's get started. I have computer with ...
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How do I move /home to a raidz pool/dataset?

This question has been raised but never answered in a way that I was able to get to work. Goal: Install Ubuntu disk 1 and move /home to a 3 disk raidz. Progress: Installed Ubuntu with the '...
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how do I delete a volume from zpool - zfs

I created a zpool with 12 drives each 8TB using: zpool create ch1 sdb sdc sdd sde sdf sdg sdh sdi sdj sdk sdl sdm Then I added 12 more 8TB drives and wanted to add them to the zpool. When I did I ...
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How to create ZFS home dirs using pam_exec

How do I get pam_exec.so to create a new home dir ZFS dataset for each user who logs in via GDM/LDAP? I'm running Ubuntu 20.04, using GDM and nslcd for LDAP auth. pam's mkhomedir library doesn't have ...
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ZFS Case Sensitivity is supposed to be settable post-creation, but it's 'read-only'

According to this Oracle document on Settable ZFS Properties, casesensitivity is supposed to be a settable property post ZFS Pool creation but, regardless of the value I supply, I get a 'read-only' ...
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2 votes
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mount an encrypted zfs partition

So I have to mount an encrypted zfs partition to fix my computer. I have looked everywhere but I can't mount it with the info I found. Every time I do sudo zfs set mountpoint=/mnt/k/ rpool it does not ...
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ZFS - New pool doesn't survive reboot

I'm in the process of "replacing" my mdadm raid5 array with a raidz2 array with ZFS on my Ubuntu 20.04 home server. But for some reason, after each reboot my zpool and datasets can't be ...
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Having trouble mounting encrypted disk (ZFS) on Ubuntu

I have a new SSD to backup photos. I installed Ubuntu 21.10, with ZFS and encrypted. Everything worked well and I decided to backup some photos. Now, I wanted to boot with my old encrypted disk (...
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nfs ganesha permission problem

hi guys i know this is basic question but i'm really confused right now i wanna do the glusterfs over zfs but it didn't work after i share it with nfs-ganesha i got a permission error (ls: reading ...
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how to create a web page on web server that will appear when pointing to the web in desktop machine

Ubuntu 20.04.3 LTS I have 2 VMs, 1 is the web vm and 1 is the desktop vm. I have this requirement where I need to create a simple home page on the web server and show some simple information such as ...
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Expanding ZFS to take up free space

I have an Ubuntu 21.10 VirtualBox VM set up with a 100GB zfs drive. I have extended that to 500GB, because the system is a victim of its own popularity. However, I am at a loss to growing that to fill ...
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