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

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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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38 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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21 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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25 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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108 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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102 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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19 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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1answer
76 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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133 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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17 views

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 ...
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504 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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95 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
52 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
211 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 ...
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112 views

How to mount ZFS drive on Ubuntu?

A friend of mine asked me to back up his drive, but its file system is ZFS. I would like to know how can I mount that on Ubuntu. Thanks.
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1answer
511 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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267 views

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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1answer
869 views

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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383 views

ZFS vs btrfs on Trusty [closed]

I have been running Precise with ZFS on root for the last two years on a home file/media server and HTPC. I am looking at rebuilding the server using Trusty and I am wondering if I should be using ...
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2answers
4k views

ZFS on Linux: Setting up NFS on Ubuntu 14.04 with OS X Mavericks Client

I have a working zpool and dataset set on my home server. I want to setup NFS to access ZFS over my home network on my Mac. On the Ubuntu side, I have... # apt-get install nfs-kernel-server # zfs ...
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1answer
151 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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46 views

Help with ZFS pools

Running Ubuntu 12.10 using ZFS on Linux I just replaced a drive in the zpool and everything looked like it was working then I rebooted and now it says that the drive that I just replaced is ...
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1answer
101 views

ZFS mirror with two partitions on the same disk, safe?

I would like to create mirrored partitions on a single disk to protect against bit rot. I understand this will not protect against hardware failure. Seeing as ZFS is intended to work with drives, ...
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3answers
2k views

Error when installing ubuntu-zfs

I'm switching from FreeNAS to Ubuntu 12.04 LTS. After a vanilla install of Ubuntu has been completed I run the following commands in the order shown to install ZFS: apt-get install ...
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2answers
13k views

Which is better for a home media server: zfs or btrfs or LVM/md? [closed]

I'm looking at building a new home server and would like a flexible filesystem. Both btrfs and zfs are interesting. I want to be able to do soft raid and have flexible solution allowing me to expand ...
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32 views

Zfs mountpoint for sidebar

I'm trying to mount a zfs drive in Lubuntu, I can get it to mount, but I can't find the proper mount point to get it to show in the side bar like a normal drive would. sudo zfs set mountpoint=?/? ...
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1answer
464 views

Home Microserver using Ubuntu and ZFS: about ZFS

I see this topic is quite a popular ([1], [2]) so hopefully I can get nice feedback on what I'm trying to do. I'm buying an HP Microserver with 4x 2TB, and I currently have two computers. I'd like ...
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3answers
5k views

zpools don't automatically mount after boot

Running ubuntu 13.10 server. Installed and setup zfs from the ubuntu ppa. All appears to work fine after a reboot if I manaully do a 'sudo zfs mount -a', but reading the FAQ on zfsonlinux.org it ...
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1answer
1k views

ZFS: Help importing a zpool after Ubuntu upgrade from 13.04 to 13.10, device IDs have changed

I have updated Ubuntu from version 13.04 to version 13.10, only to discover that the SATA disks IDs have changed, and my ZFS pool now fails. On new Ubuntu 13.10 the disk IDs are now ata-* instead of ...
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1answer
608 views

ZFS pool with disks labels /dev/disk/by-id/scsi*** disappeared after upgrade

Recently I have upgraded my home server from 13.04 to 13.10 by dist-upgrade and my zfs pool which was built using .../by-id/scsi*** disk names broke The problem is that scsi*** labels completely ...
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1answer
1k views

Unable to install ZFS (Ubuntu 13.10) [closed]

I'm fairly new to Ubuntu and wanted to setup a server running ZFS/XBMC - The XBMC install went fine, however I ran into trouble getting ZFS working. Configuration : Ubuntu 13.10 (GNU/Linux ...
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1answer
743 views

ZFS RAIDZ Pool appears empty after upgrade to 13.10

I upgraded my Ubuntu workstation where I had my home directory linked to a ZFS filesystem. After the upgrade, I can no longer log into the desktop, but I can log in via terminal. When I browse to ...
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1answer
339 views

zpool 'replace' vdev failed after resilvering - can't detach

My one zpool has experienced two successive drive failures. As I was resilvering the first, the second failed and I got two errors, in snapshots. The resilvering finished, and then I used "zpool ...
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1answer
988 views

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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1answer
2k views

ZFS on >2TB disk in Ubuntu 12.04?

I just got a 4TB disk and I'm running Ubuntu 12.04. http://www.thegeekstuff.com/2012/08/2tb-gtp-parted/ says you need to partition your disk with GPT if you want to use >2TB (and that you can do this ...
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2answers
146 views

use Cron to mail log from a job

I have a weekly script that cron runs to make a zfs snapshot. I was wondering if it is possible to mail a OK mail if the job run correctly and a error mail if something happened and in the content of ...
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1answer
132 views

ZFS Raid1-z replace Disk

I inted one of my disk from the lower raid1z setup and i was wondering what is the best way to do it, what a re the steps. NAME STATE READ WRITE CKSUM ...
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3answers
2k views

Activate ZFS Snapshots

I accidentally delete some files from my zfs pool and tried to mount the latest snapshots but i just figured out that i have no snapshots. How to activate the snapshots, how to configure it? I am ...
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2answers
239 views

Which file system supports RAID and is mature enough for a media server?

I am planning on setting up a home media machine with Ubuntu 12.04 LTS or 13.04 (please let me know if this makes a difference). I have 4 hard drives and I am looking for a file system that supports ...
5
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2answers
6k views

Replacing a dead disk in a zpool

I'm running Ubuntu Server 13.04 64-bit using native ZFS. I have a zpool consisting of 4 hard drives of which one died yesterday and now is not being recognized by the OS or the BIOS anymore. ...
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2answers
608 views

How do I get Ubuntu to forget all about an old ZPOOL?

My Ubuntu 12.04 system has two zpools: rpool (containing the root filesystem) and rdata (containing all other data). rdata was originally 2 x 1TB disks mirrored. Because I couldn't upgrade rdata to ...
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1k views

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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129 views

seeking rescue drive with ZFS

I'd like to create a USB flash drive with a live Ubuntu that supports ZFS. The purpose is to rescue, or do low-level things to, a computer with ZFS. However I've failed to find such a thing, and ...
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480 views

Can't share zfs filesystem over nfs

Ubuntu Server 13.04. Client OpenElec 3.02 trying to share thru built-in into zfs sharenfs server (192.168.1.56) administrator@ubuntu:~$ sudo zfs get all | grep share [sudo] password for ...
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Can anyone point me to a guide for installing Ubuntu 12.04 LTS on to a USB Thumb Drive?

I am currently looking to change my home NAS from FreeNAS to Ubuntu server 12.04 LTS. I have had a look but all the guides I can find are about making a live USB not a USB with the Full install on it. ...
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355 views

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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1k views

How to migrate from RAIDZ1 to RAIDZ2 using ZFS-native? [closed]

Last night I created a raidz1 array, however later in the evening I realised I needed to create a raidz2 (RAID5), is it possible to change the raid level of my array from raidz1 to raidz2 without ...
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2answers
6k views

How do you apply performance tuning settings for Native zfs?

I am currently running an Ubuntu 12.10 Desktop with some zfs pools. I have installed ZFS using the following instructions and from the PPA it contains: https://wiki.ubuntu.com/ZFS I have a ...
3
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2answers
348 views

ZFS partition as swap

I'm using native-zfs and was wondering if there is a way to use a ZFS partition for SWAP. I'm running my server off of a thumbdrive and thought that would be a good way to speed it up a little bit.
3
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1answer
369 views

Copying files to zfs mountpoint doesn't work - the files aren't actually copied to the other filesystem, [closed]

I have 3 x 4 TB disks in a NAS that I want to group together and access as if they were one whole 'unit' of some kind. I also have a 250GB disk containing the OS - this is full of films and tv shows ...