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

learn more… | top users | synonyms

0
votes
1answer
35 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 ...
0
votes
0answers
21 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 ...
1
vote
0answers
10 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 ...
0
votes
1answer
70 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 ...
0
votes
0answers
45 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, ...
2
votes
2answers
43 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 ...
0
votes
0answers
35 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 ...
0
votes
1answer
27 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 ...
0
votes
0answers
38 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 ...
1
vote
0answers
32 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---- ...
0
votes
2answers
53 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 ...
0
votes
1answer
68 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 ...
0
votes
0answers
95 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 ...
0
votes
1answer
359 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 ...
0
votes
1answer
49 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 ...
2
votes
0answers
223 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 ...
1
vote
0answers
178 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 ...
0
votes
2answers
59 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 ...
2
votes
1answer
202 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 ...
0
votes
0answers
266 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 ...
0
votes
1answer
175 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: ...
0
votes
2answers
47 views

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 ...
1
vote
1answer
155 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 ...
0
votes
2answers
389 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 ...
0
votes
1answer
192 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 ...
2
votes
1answer
139 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?
0
votes
1answer
171 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 ...
0
votes
1answer
197 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> ...
1
vote
1answer
572 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 ...
0
votes
0answers
117 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, ...
0
votes
0answers
230 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 ...
3
votes
0answers
3k 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" ...
1
vote
1answer
566 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 ...
0
votes
0answers
45 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 ...
1
vote
1answer
768 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 ...
0
votes
1answer
685 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 ...
0
votes
0answers
25 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 ...
0
votes
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 ...
2
votes
0answers
196 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 ...
1
vote
1answer
96 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 ...
6
votes
1answer
433 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 ...
0
votes
1answer
331 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.
1
vote
1answer
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 ...
3
votes
0answers
435 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 ...
2
votes
1answer
2k 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 ...
3
votes
3answers
7k 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 ...
1
vote
1answer
203 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 ...
1
vote
1answer
197 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, ...
1
vote
3answers
4k 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 ...
7
votes
2answers
18k 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 ...