Questions tagged [zfs]
ZFS is an integrated filesystem and volume manager, originally designed by Sun. Use this tag for all questions related to ZFS commands and features, including Zpool creation, import and export, ZFS volume and filesystem management, and Ubuntu "Root on ZFS" (using ZFS as the root filesystem).
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Unable to upgrade due to small ZFS boot partition [closed]
I installed 23.04 with zfs. got a 2GB boot partition
the provided hints to remove unused kernels, and compression do not fix this.
I have only one kernel installed.
Additional information: this mess ...
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1
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95
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Undead SSH services after restarting Ubuntu 22.04 on LXC machine
Some services SSH die after restart on Ubuntu... Or so they say. The status is "inactive (dead)", but you can connect to the server. What could be the problem here? What can one check?
Some ...
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21
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Migrate from apt lxc 3.0.3 to snap 4.0.9. Mount points problem
I need to upgrade my Ubuntu from 18.04, and for this, I need to upgrade LXC/LXD to snap version. So, I ran: lxd.migrate and I got the following output:
=== Destination server
LXD version: 4.0.9
LXD ...
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0
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28
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Need help with zfs import and getting plex to see datasets
Thanks for taking the time to read and provide any insight. So I didn't export this thing like I should have any did a force import. I have my data there in the new machine as /mnt. I can see the ...
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56
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Trying to recover Zpool
I am having a terrible time with moving to a new motherboard. I upgraded to improve the a plex server running docker containers. I initially cloned the ssd to a new NVME. I am unable to find the zpool ...
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1
answer
89
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Problem with MDADM / ZFS
Just reinstalled Kubuntu version 22 (was trying a 20=>22 LTS support upgrade and it all went badly wrong.)
I'm now encountering problems getting my disk arrays working again. Couldn't remember the ...
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48
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initramfs prompt appears while booting - Error regarding zfs mountpoint
Hello i have a little problem with my pc i have ubuntu system 23.04, last night everything was fine , i turned on my pc today there is initramfs prompt appears and when i type "exit" ...
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39
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Access another system's root folder on mounted zfs rpool
my Ubuntu instance isn't booting, however I was able to use a Ubuntu Live USB to import the rpool, decrypt the drive, and use the system.key to mount the drive as read-only. I can only seem to access (...
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38
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New version of ZFS for DKMS? [duplicate]
I have already installed zfs 2.1.5 module with everything for DKMS in /usr/src after executing following command: apt install zfs-dkms.
But How I can add new versions of zfs modules?
Should I compile ...
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How to though DKMS install new version of ZFS modules to specified already installed kernel?
I know that DKMS provides support for installing supplementary versions of kernel modules. But how I can automatically install newer version of ZFS modules to installed kernels?
I've already have zfs-...
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49
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Why does Files and Disks apps think my ZFS filesystems aren't mounted
My root and boot partitions are running ZFS, and all is well. EXCEPT that if I try to browse to bpool or rpool in Files (is the app really just called "Files"?!?) I get
Error mounting /dev/...
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1
answer
71
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How I can update my ZFS file system?
I have Ubuntu 22.04 installed on Root ZFS. In my previous post I've described problem where Wi-Fi connection drops for all devices that are connected to my router such as phones, tablets, laptops at ...
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148
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Chroot into an encrypted ZFS installation from live media or alternatives
For some reason, usb-guard decided to remove all of the rules I have written that allowed my keyboard and mouse. I've had this happen before from myself messing up the configuration, but this setup ...
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Can't compile ZFS from sources for Ubuntu Lunar
I tried to compile ZFS from sources for Ubuntu Lunar,but it failed. This is the tutorial that I've followed :
https://uptrace.dev/blog/ubuntu-install-zfs.html
this is the full log:
sudo apt install ...
- 515
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51
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Mounting encrypted rpool using Ubuntu Live CD, successful but broken links, out of ideas
VM took a crash during operation and now won't boot. Would like to rip the data out of the encrypted home directory and then start from scratch. I boot the VM with Ubuntu Live CD, below are the steps ...
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155
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How to run kernel 5.19 with Ubuntu 22.04 and ZFS?
I have two AMD 6800XT graphics cards that have poor support with kernel 5.15
I'd like to upgrade to kernel 5.19. However, I also run ZFS. The current version in 22.04 is 2.1.5 which does not support 5....
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24
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How do I future-proof a ZFS bpool when installing Ubuntu? (Novice)
I have limited Ubuntu experience; a previous install of Ubuntu on my wife's laptop resulted in error messages about the ZFS pool being too small frequently and consistently.
I'm going to start from a ...
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0
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24
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Cannot change boot menu on ZFS filesystem
I have Ubuntu 22.04.02 LTS and ZFS partitions.
I'm using Grub Customizer, however boot menu configuration which I can see in Grub Customization is different from menu which I can see during start up, ...
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1
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189
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How to get native (root) ZFS on ubuntu 23?
I love ZFS. it should never have been removed. I stuck with 21.04 until I couldn't take it anymore just because of that.
how do I get ZFS on ubuntu 23 again?
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42
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Limit IO speed on ZFS pool
I want to limit the speed of a ZPOOL I have on a USB external device (facing overheating issues otherwise). I know I could just trash the device but trying to save the planet. It works fine at lower ...
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1
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175
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zfs "Permanent errors" in "rpool/USERDATA"
zpool statuts -v gives me Permanent errors, and I was wondering how to fix them:
❯ sudo zpool status -v
Insert authentication card for user `franck'
[sudo] Mot de passe de franck :
pool: bpool
...
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143
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How to convert zfs /boot to ext4
I want to change /boot from zfs to ext4.
I've tarred the contents of /boot for safe-keeping.
I can't unmount /boot while linux is running because the kernel is in /boot.
If I use the LiveCD, I can get ...
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392
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couldn't connect to zsys daemon after upgrading from 22.10 to 23.04
After upgrading from 22.10 to 23.04, I'm getting the following message:
ERROR couldn't connect to zsys daemon: connection error: desc = "transport: Error while dialing dial unix /run/zsysd.sock: ...
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337
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zfs not working after upgrade to 23.04
I upgraded my 22.10 installation to 23.04, but it won't boot. I had reconfigured /root as zfs a few years ago.
Am I missing a package for zfs to work?
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141
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Is it safe for me to upgrade to me to upgrade from Ubuntu Kinetic to Lunar (ZFS boot)
I installed Ubuntu 22.10/Kinetic with the ZFS filesystem option. I would like to upgrade to 23.04/Lunar but am concerned about whether the system will be bootable after upgrade due to lagging ZFS ...
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130
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Problem with non-mounting ZFS-pools at Ubuntu 20.04 boot
I‘ve got a HP-Notebook which ran out of power, cause someone unplugged the power cable, while the top was closed. So, when the battery got empty, the notebook quitted without someone taking notice of ...
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3
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ubuntu zfs zpool lost after reboot due to /dev/sd* name re-ordered
create zfs pool with:
$ sudo zpool create -f data raidz2 sda sdb sdc sdd
$ sudo zpool status
pool: data
state: ONLINE
scan: none requested
config:
NAME STATE READ WRITE CKSUM
...
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1
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106
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ZFS Ubuntu 20.04, Failed Drive makes pool unavailable
I have a recent Build of Ubuntu 20.04, Fresh installation 3 months ago, Installed on an SSD (No Boot ZFS), where I created 2 zpools: one 'zombiepool2' 4 x 2TB (not, very new drives), second '...
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1
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Automatically mount and unlock ZFS dataset on external USB drive connection
As the title says, I'm trying to mimic the behavior of a LUKS encrypted drive with ZFS.
An external USB drive with LUKS can automatically mount when connected. Ubuntu will show a dialog for the ...
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Is there a file manager that handles smartly when moving folders that correspond to ZFS datasets?
All my Linux systems (Ubuntu 20.04 and 22.04, server and desktop alike) have root-on-zfs and data on one or more ZFS pools.
Of course data need to be shifted around often, for instance with mc or ...
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111
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How to recover from a broken zsys state with ZFS?
A while back, I run into an issue where there were too many snapshots and zsys couldn't cope anymore.
I didn't know about the zsysctl suite of commands, so I manually deleted some snapshots.
This, ...
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146
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Mirror GRUB to second ZFS disk in mirrored pool
Question
I have system which was installed a few years ago. Initially, it was Ubuntu 18.04 with the boot drive set with ZFS installed using this guide. After upgrades it is now 22.04.
The pool is ...
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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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Most of the entries in the NAME column of the output from lsof +D /tmp do not begin with /tmp. Why is this the case?
I'm part of a lab that has a shared scientific computing enviornment. My system administrator just told everyone in the lab that one of the nodes I am using is about to crash because /tmp is full. I ...
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1
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187
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Encrypted swap - changing hard drive
I followed this guide some time ago to set up my system (ubuntu 22.10) on an encrypted ZFS file system, and all worked fine. Part of the guide is to encrypt the swap partition.
Then, I upgraded the ...
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1
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125
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bash error !{P: event not found
What is wrong with this command sequence:
stephen@stephen:~$ RETENTION=3
stephen@stephen:~$ echo $RETENTION
3
stephen@stephen:~$ SNAP=bpool/BOOT/ubuntu_7pdn8o@autozsys_
stephen@stephen:~$ sudo zfs ...
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2
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225
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Ubuntu ZFS - backing up whole system before upgrading to 22.04?
I have Ubuntu 20.04 with ZFS installed and I want to upgrade to 22.04.
I would very much like to avoid breaking my system, because it's important enough for it to keep running. My data is already ...
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45
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bpool "almost" out of space unless I delete most of the datasets
bpool is almost out of space. when zysys generate datasets.
# zfs list -t snapshot -r bpool
NAME USED AVAIL REFER MOUNTPOINT
bpool/BOOT/ubuntu_mj0kfs@...
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modprobe: Key was rejected by service (Ubuntu 22.04.1 Desktop ISO)
The installed Ubuntu 22.04.1 works fine, but when running the live system (ISO/USB, "Try Ubuntu") there seems to be a problem with unsigned or wrongly signed kernel modules:
modprobe zfs
...
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1
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260
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Why is the zfs-dracut package kept back?
I have recently upgraded from ubuntu 18.04 to 22.04, which also upgraded my zfs versions ... except for this one package, zfs-dracut. It "has been kept back".
As can be seen in the output of ...
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Why is my zfs backup so small?
While asking this question, I have figured it out and will be self-answering.
I have backed up my data (tank) to a file-based zfs pool on an NTFS drive (indoorpool). However, it now looks like the ...
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What is the difference between the properties of using ZFS on whole disks, partitions or files as a volume?
It may be that for some applications it is quite common under ZFS to address whole disks as volumes. However, it is also possible to add partitions and files to the pool.
What are the differences in ...
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198
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What are the advantages and disadvantages of using an L2ARC and a ZIL cache on a RAID 1 or RAIDZ ZFS SSD?
I have a small PC in which an SSD is installed. There is no space for another hard disk in the PC, so in this example the PC really has only one hard disk.
On the hard disk is Ubuntu, which is ...
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154
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I installed Ubuntu on ZFS, How to move to ext4 without a reinstall
As the title says, I installed Ubuntu 22.04 LTS and Gave it my entire SSD (256GB) and I installed Atlas OS on my HDD but Windows on HDD is never a good idea to start with so I need to install Windows ...
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0
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69
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Trying to determine partition usage by zfs in Ubuntu 22.10
I'm using a fresh installation of Ubuntu 22.10. I'm new to zfs but worked with mdm and lvm, so I thought it would not be so hard. From research the command here is showing devices, but how do I match ...
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27
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How can I save files via simple copy and paste to ZFS /pooltank/home location? [duplicate]
I have spent hours reading through many tutorials and administrator guide from Oracle with no luck.
The purpose of this question is to do simple copy and paste of files to the new pool that I have ...
0
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0
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478
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How to configure the ZFS in an Ubuntu installation to get a RaidZ1 and its data security even with only one hard disk?
ZFS offers the wonderful possibility, when using Raid1, RaidZ1, RaidZ2 and RaidZ3, that data caused by defects in memory cells of SSDs or in defective blocks of classic hard disks are automatically ...
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What is the purpose of an bpool partition in ZFS and what does it contain?
With an installation of Ubuntu-Cinnamon with ZFS as file system, the following partitions are created:
/dev/sda1 (efi)
/dev/sda2 (swap)
/dev/sda3 (bpool)
/dev/sda4 (rpool for data)
What is the ...
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119
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kernel panic after installing new kernel
Kernel panic output image
I have a very specific and strange problem and ita kinda urgent to solve it in a timely manner. Yesterday I encountered a kernel panic on my servers
looking at server ...
4
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5
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What GUI-based, open-source software options are there for configuring ZFS?
In Ubuntu, configuration of settings such as the following can be done via console as mentioned in this question, including:
Choice of compression algorithm
Choice of the compression strength
...
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