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

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Does the native RAID in Ubuntu support RAID configurations with hard drives of different sizes?

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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1answer
56 views

Use multiple zfs pools in LXD

I have several pools: tank1, tank2 and tank3. How can I make LXD container use designated pool. eg. C1 & C2 use tank1, C3 use tank2, C4 & C5 use tank3?
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1answer
228 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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1answer
250 views

ZFS Pools not mounted 16.04

The pool (two 4tb drives) were happily running in 14.10 but after upgrading to 16.04 they stopped. Entering: /sbin/modprobe zfs zpool import Raid zpool status Everything at this point is mounted ...
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1answer
616 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 (https://github.com/zfsonlinux/zfs/issues/1155):...
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2k 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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0answers
6k 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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0answers
364 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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692 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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0answers
2k 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 ...
2
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0answers
276 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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0answers
57 views

LXD container disk and block I/O limits. EDIT: Its a zfs pool limit

There is a container running on my system and it is is giving me the (28: No space left on device) error message. I tried to troubleshoot the problem and I see why it probably is complaining: bas@...
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0answers
30 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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0answers
73 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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0answers
73 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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0answers
55 views

Ubuntu 16.04 LTS: zpool destroy'ed pool got re-created after system reboot

Just created a VM of Ubuntu 16.04 LTS to experiment with ZFS. The thing I've done: # cd /home/zerox/local # touch vdev1 # truncate -s 2G vdev1 # zpool create tank /home/zerox/local/vdev1 # zfs ...
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111 views

Enable ZFS ZED Email Notifications on 16.04

As ZFS is now officially supported in Ubuntu 16.04, I would like to enable email notifications for my ZFS pool. Below are the steps I have taken so far, however I am now currently stuck: Installed ...
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0answers
46 views

How can I replace ZFS package from zfsonlinux.org with the ones come with Ubuntu 16.04?

I was using ZFS packages from zfsonlinux.org before 16.04 released. Now Ubuntu 16.04 is released with ZFS built-in. So far zfsonlinux.org packages are still working, but I prefer to use 1st-party ...
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27 views

ZFS zpool import in ubuntu taking very long after system crash and reinstall OS

Don't know if the events were related in any way: zpool set to automatically run scrub on crontab, most recent scrub completed a few days ago, 3 unrepairable errors on 3 files. I did not require ...
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0answers
34 views

Can't start without systemctl after moving /home

Due to storage limit I recently moved /home, /tmp and /usr directories of an Ubuntu Unity 15.10 installation from independent ext4 partitions to ZFS datasets. This question relates the process I ...
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91 views

Move /home and /usr to ZFS datasets

I installed Ubuntu to an SSD. Setting up specific partitions for /usr, /home and /tmp. This is my /etc/fstab: #Entry for /dev/sda4 : UUID=590649b2-d8ce-489d-975a-0d5415bffbaa / ext4 ...
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37 views

server hangs when I try to access loop devices on ZFS

If I do: losetup /dev/loop1 ./loop Then for example: fdisk /dev/loop1 Server panics. It works fine on ext4 on the same server. Kernel: 4.2.0-30-generic Apparently it was fixed in zfs 0.6.5., ...
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49 views

Ubuntu 15.10 ZFS disk failed

Hello I hope you can help. Some time ago I build myself a large NAS server around Ubuntu and zfs. Start back in 14.xx time. Well recently I upgraded to 15.10. When I did this I ended up reinstall ...
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75 views

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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35 views

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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59 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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0answers
40 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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112 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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155 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, 3....