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

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how to mount a NFs share on 14.04 from FreeNAs

Not sure how to formulate the question since i am quite a newbie but this is my problem and i can't seem to find a solution. I run a Linux-Ubuntu 14.04 on which I have installed Sonar. I want Sonar ...
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3answers
119 views

Problems installing ZFS on Ubuntu 15.10

Trying to install the latest method for installing ZFS on ubuntu and failing miserably. ion@Hades:~$ sudo apt-get install zfsutils-linux After running to install zfs I get problems during the ...
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So many users on ZFS pool? Cannot kill them all :( Cannot export pool :(

Hoping someone can help me. I am trying to export my ZFS pool so I can upgrade my Ubuntu from 14.04 to 15.10. I tried doing do-release-upgrade, and lost my pool, on discovering instructions, I have ...
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15.10 loopback file hangs when raw file is zfs

In Ubuntu 15.10, when I create a loopback file,e.g., thus: losetup /dev/loop3 foo and foo is on ZFS, then the system hangs. This does not happen if foo is on an ext4 FS or on /dev/shm, or is a ...
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30 views

Restoring zfs configuration given zpool.cache file backup

I have a backup copy of my zpool.cache file taken prior to upgrading from trusty LTS to 15.10 which, as I understand it, comes with ZFS "out of the box" The upgrade failed due to a known (but not ...
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1answer
192 views

ZFS Pools are not autoloading on Ubuntu 15.10

I have install Ubuntu 15.10 to a USB drive, and while everything works mostly, I have to perform a lot of manual tasks after a reboot. I am using the computer for my media center. There is a similar ...
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21 views

Mount in fstab results in S to Skip during boot

I used fstab to point zoneminder directory to a directory that is maintained under a ZFS pool/dataset. It worked fine in terminal after issuing sudo mount-a but, when I rebooted I got the S to ...
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249 views

Ubuntu 15.10 ZFSUTILS-LINUX

Further to some other discussion regarding getting the zfsutils-linux package working on Ubuntu 15.10, it does not appear that the normal zfs behaviour of automatic mounting during a reboot is yet ...
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66 views

How to mount a ZFS formatted drive?

I have a FreeBSD drive that I want to retrieve a file from with Ubuntu 14.04 desktop. I installed ubuntu-zfs from this PPA and have been through several tutorials, all of which have covered ...
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20 views

Replace boot drive with ZFS pool?

If I have already installed a system that has 3 spare 1TB disks in it, can I create a zfs pool on it and transfer the system to it then boot off it ? Once thats done I could then add the existing disk ...
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4answers
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ZFS broken after upgrading to 15.10

Upgraded earlier from 15.04 to 15.10, now my ZFS system won't mount. Checking for updates comes up with "Unable to locate package ubuntu-zfs" checking the PPA here it seems that the PPA for 15.10 is ...
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44 views

Can I manage ZFS with Landscape and MAAS?

maas and landscape. I am very interested in installing and using ZFS across all my servers 5 in total. I am also very interested in using juju,maas and landscape to automate the installation and ...
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3answers
108 views

How do I move /home/user to a zfs pool?

ubuntu 14.04 installed on 128Gb ssd zfs pool ("zfshome") across 3x3TB disks, containing audio/video/tv etc. I originally built this as a nas4free NAS serving my windows boxes around the house.I'm now ...
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1answer
250 views

How to avoid manually reinstalling zfs after kernel update

I use ZFS and everytime the kernel is updated, ZFS is broken and the mounts are missing. I always have to follow this procedure, that I found on the net ...
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62 views

zfs and power failure

After serveral power failures my zfs raidset got pretty screwed up. Disks got kicked out and got back in again. Now my raidset looks like this. pool: datastore state: DEGRADED status: One or more ...
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49 views

DRBD write over boundaries of zvol?

Running two 14.04 LTS servers with drbd and heartbeat using zfs under drdb. Created a zvol with 1.5TB and xfs to format the zvol then nfs shared out to clients. For unknown reason 1.94TB was being ...
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3answers
372 views

ZFS root filesystem

I've been trying to install ubuntu with a zfs as root filesystem. But it seems that GRUB 2.xx which has ZFS support doesen't support compression, so i disabled it. However i keep running in to the ...
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131 views

Failed to load ZFS module stack but spl and zfs modules are compatible and installed

On ubuntu 14.04 LTS: $ zfs set compression=lz4 ars/homes Failed to load ZFS module stack. Load the module manually by running 'insmod /zfs.ko' as root. $ dkms status|egrep "zfs|spl" spl, 0.6.4.2, ...
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2answers
67 views

Can Juju interact with already installed Openstack service?

(I didn't find any answer to my question after having looked in a lot of posts) I'm currently deploying an Openstack private cloud. - I would like to run Solaris 11.2 (or OpenIndiana/similar) on my ...
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83 views

File Based Zpool Won't Mount

I've created a zpool with the commands: POOL_NAME=flocker POOL_FILE=/var/opt/flocker/pool-vdev sudo dd if=/dev/zero of=$POOL_FILE bs=4k count=1 seek=5M sudo zpool create $POOL_NAME $POOL_FILE The ...
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1answer
47 views

ZFS Raid1z Disk Replace

I have been running ZFS Raid1z with 5 disk under Ubuntu 12.04 for 3 years now with no problems at all. Unfortunately the day of failing disk has come. I have lost a disk in the array, he simply went ...
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88 views

How to check ZFS Zpool is set up correctly?

I have just created a RAIDZ1 group of 3 x 2TB disks acc@CODAAMOK304:~$ sudo zpool status pool: storage state: ONLINE scan: none requested config: NAME STATE READ WRITE CKSUM ...
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53 views

Why are some of my devices in /dev/mapper symlinks while others aren't?

I have the following: ls -l /dev/mapper ...[snip] lrwxrwxrwx 1 root root 7 May 15 03:21 md1_crypt -> ../dm-0 lrwxrwxrwx 1 root root 7 May 15 03:21 md2_crypt -> ../dm-9 brw-rw---- ...
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101 views

ZFS with existing data on 1 HDD

I'm thinking about adding a ZFS Raid-5 to my Ubuntu Server (Home use only). Currently, I have 2 HDD, 1 is 120GB for OS and the other is 4TB for download and torrent. I will purchase an addition HDD ...
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1answer
75 views

Restore ZFS automount

I've upgraded to 15.04 and I found the package ubuntu-zfs to be broken on systemd. I found the bug description on GitHub but I don't know how the procedure to be done as described: The correct ...
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148 views

Import disks with ZFS data from FreeNas

I was wondering if anyone was able to import or recover data from a broken freenas installation. I had 3 HDD (1TB each) running together with RAID 5 I believe. Ubuntu recognizes the disks and the ...
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1answer
662 views

zfs broken after upgrading package spl

Just now I did an apt-get upgrade, which upgraded package spl to 0.6.4.1. After rebooting, my zfs-formatted disk failed to mount. How should I regain zfs functionality? All zfs commands are now ...
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1answer
76 views

how to check if zfs is using the kernel module

I am having perfomance troubles (transfer rates only about 50MB/s using 6 2TB server hdds WDC WD2003FYYS, each doing app 150 MB/s) with my raidz and was hoping to increase it with the ZFS on Linux ...
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0answers
795 views

ZFS - Always Out of Memory

I read that ZFS was set to use all physical memory except 1GB on systems that have 4GB or more. Since I have virtual machines running my home-server that is running the ZFS filesystem, I wanted to ...
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288 views

Moving From FreeNAS to Ubuntu Server

So I've just bought and installed an HP Proliant Microserver gen8 and upgraded it to 10GB RAM. I've installed FreeNAS onto a USB key (16GB) as recommended and FreeNAS is working well. Unfortunately, I ...
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136 views

How much space is required for snapshots in ZFS?

How much space do snapshots use in ZFS? I created a pool and want to create a volume. I don't know how much space snapshots will occupy. Is there any way or formula exist to compute space ...
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1answer
291 views

Import ZFS Pool from FreeNAS (not supported com.delphix:embedded_data)

I am trying to import a pool that I exported from FreeNAS. I originally installed zfs-fuse however it was not a new enough version. I removed that and installed ubuntu-zfs from the PPA. Here is an ...
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405 views

Understanding the zfs boot services with systemd on Ubuntu

I would like to understand exactly how zfs is being initiated at boot running systemd on Ubuntu. Although the system boots fine it appears not all zfs filesystems automount, and zpools need to be ...
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1answer
392 views

ZFS on Linux “no such device in pool”

I have a pool which contains a disc with only a few errors. I wanted to clear those errors out and see if they came back before I purchased a new disc: me@server:/$ sudo zpool status tank pool: ...
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2answers
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ZFS: How does it work? Mirroring on Raid0

I've got a laptop, that I want to migrate to ZFS filesystem. This laptop has 2HDD Drives. My zpool idea is like this: 1 zpool on 2 HDD drives. / - separate subvol /home - separate subvol with ...
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1answer
257 views

How to blacklist zfs kernel module during boot?

How to disable ZFS kernel-module before boot in grub? It is mentioned that some modules can be disabled through grub command line in similar question. Unfortunately this method is not working with ...
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2answers
778 views

grub can't find grub.cfg when booting from zfs root

I installed Xubuntu 14.04 on a ZFS-root following these instructions using ZoL's Debian repo: https://github.com/fajarnugraha/pkg-zfs/wiki/HOWTO-install-Ubuntu-to-a-Native-ZFS-Root-Filesystem The ...
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1answer
306 views

cgroups disk IO throttling with zfs

I'd like to use cgroups with my linux containers to throttle disk IO on them. Containers placed on ZFS volume /tank/lxc. I have three containers each in their own /tank/lxc/nodeXX directory. How can ...
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1answer
255 views

Can I import a ZFS data pool from FreeNAS without losing the data?

I'm switching to Ubuntu server from FreeNAS and I don't have a hard drive to back the data up to. Is is possible to import it into Ubuntu even though the data pool is split between two different HDD?
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1answer
306 views

ZFS pool import broken after upgrade

I lost my zfs pool while migrating from 12.04 to 14.04. > sudo zpool status pool: srv state: UNAVAIL status: One or more devices could not be used because the label is missing or invalid. There ...
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1answer
345 views

zpool missing after kernel upgrade attempt

I'm running 14.04 LTS with ZFS and tried to update my kernel to 3.17 following these instructions. During this install I got this error: *** Please make sure the kmod spl devel <kernel> ...
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1answer
932 views

What happens in bcache if the cache ssd dies?

I'm creating a NAS and I've been doing a lot of research on the different SSD caches. I have a 120gb ssd which is more than enough for the OS so I want to use most of it as a cache for the md raid5 ...
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0answers
5k views

Failed to load ZFS module stack

Have been using zfs on linux (zfs-native/stable) raidz on 14.04 for several months without hitch and decided to move across some more important files as considered it trustworthy or I guess "stable" ...
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1answer
772 views

How to make update-grub recognize zfs datasets as root in /etc/fstab and add minimal set of zfs options?

I'm having trouble to find out how to make update-grub of grub-efi 2.02~beta2-9ubuntu1 recognize the specification of a ZFS dataset as root device in /etc/fstab and conditionally add a minimal set of ...
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1answer
1k views

Mounting ZFS pool - almost there

I'm having a bit of trouble mounting an ZFS pool I've migrated from a FreeNas system to Ubuntu 14.04. So far I've managed to import the ZFS pool via the zpool import Storage command. I can list all ...
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1answer
996 views

How to migrate from ext4 to zfs root filesystem with separate ext4 boot partition?

I'm trying to change my root partition from ext4 to zfs (simple partition, without ZFS volume management functions) by moving all files in a live system (Ubtunu 14.04) from the ext4 partition to an ...
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1answer
1k views

ZFS pool broken after upgrading to 14.04 LTS

Well, I have been putting off upgrading to 14.04 for fear that I would break something. Actually for fear that it would break zfs (or I would break it). I am bascially slightly better than novice ...
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248 views

Building NAS Server and Need Guidance

I'm building a NAS and using Ubuntu as the OS. I have a few questions and need some guidance on what direction to take. I know I am asking many questions, if you can only answer one of them please ...
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1answer
109 views

ZFS Pool - in dire need of help.

I'm really really new to Ubuntu. Which is probably why I'm facing this predicament... I couldn't load Ubuntu this evening. For whatever reason I could get to the login screen, but absolutely no ...
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1answer
540 views

How to manage kernel upgrades with ubuntu-zfs installed

I have ubuntu-zfs installed. Periodically my system downloads minor kernel updates, but does not rebuild the ZFS module. On the next reboot, none of the ZFS filesystems can be mounted. In the past ...