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

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Ubuntu 12.04 RAID 5/6: Native RAID or ZFS?

have 8 hard drives of different sizes that I want in a RAID 5 or 6 configuration, the OS is Ubuntu 12.04 desktop. Does the native RAID in Ubuntu support RAID configurations with hard drives of ...
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203 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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153 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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ZFS on Linux: Setting up NFS on Ubuntu 14.04

I upgraded my headless server from 13.10 to 14.04, but borked the upgrade (and stupidly didn't have a backup image - lesson learnt). Hence, I'm reinstalling everything from scratch. I have a working ...
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2k views

Replacing a disk in zpool

I am using Ubuntu 12.04 & Zfs Native. I created a zpool using the /dev/disk/by-id method, but I can no longer import zpool. When I try zpool status command I get the error message " no such pool " ...
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415 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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496 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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86 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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1k views

Booting off a ZFS root in 14.04

I've been running a Debian derivative (LMDE) on a ZFS root for half a year now. It was created by cloning a regular ext4-based install with all the necessary packages onto a ZFS pool, chrooting into ...
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177 views

Cannot boot ZFS root on Ubuntu 12.04 after Heartbleed update

I did the apt-get update and then upgrade to deal with the heartbleed vulnerability. I rebooted after the upgrade without checking that everything was good. Now I'm not having much luck. It is booting ...
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Activate ACL for zfs pool ubuntu 13.04

i have tested ACL on local folders and i works perfect. But on my zfs pool called "tank" root@datacenter:/mnt# ls datatank test webmin_1.650_all.deb root@datacenter:/mnt# setfacl -m u:casper:rwx ...
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31 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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1answer
78 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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109 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
102 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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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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How to rebuild ZFS pool with new disks of different sector sizes?

I have Ubuntu 12.04 with ZFS installed. There are two pools: rpool (the root filesystem) and rdata (all the data). rdata was built with 2 x 1TB WD EADS drives (with 512 byte physical sectors) in a ZFS ...
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apt-get in LXC container is very slow on Ubuntu Server 12.04

I haven't had much luck in finding out the source of the issue, whether this "issue" is simply a limitation of LXC or zfs, or whether this issue is specific to Ubuntu. The issue is quite simply that ...
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101 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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2k 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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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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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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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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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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36 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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125 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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71 views

zpool will not mount after upgrade to 14.4

After upgrading my Ubuntu to 14.04 my server wouldn't complete boot. Hooking it up to a monitor I see that it failed to export my zfs and that by pressing the "s" key, I could bypass that. Doing so, ...
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157 views

zfs mountall does not work at boot on Ubuntu 14.04 LTS

I'm not sure how do I go about debugging this. I have the following packages installed - ii dkms 2.2.0.3-1.1ubuntu5+zfs9~trusty ...
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38 views

How to recover a GPT after wrong zpool creation?

I run zpool create /dev/sda instead of zpool create /dev/sdaX. The command failed after ~2 seconds with an error I can't reconstruct or remember. I guess if I had sent SIGINT to zpool it would have ...
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I cn see 'zfs partition' through the 'disks' app, but there is no option to mount. Details

The Case: I have a notebook with a partitioned HD. I installed Debian in one partition, and the other partition was destined to "/home". About a month ago, the "/home" partition was corrupted, but ...