ZFS, which stands for Zettabyte File System, is a combined file system and logical volume manager designed by Sun Microsystems.

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How do I get systemd to start my ZFS mount script before doing anything else?

Right now I'm using zfsonlinux on Fedora 19, and it works excellently. Mounting works at bootup as planned using the initscript (included with zfs) that systemd calls, but there's a pretty significant ...
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264 views

ZFS: Trying to remove top-level drive from Zpool

I have a zpool called storage that contains a five device raidz1 array. Today I went and bought another 3TB device and put it in my enclosure. However, instead of creating a new pool and adding that ...
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1answer
39 views

ZFS on Linux volume low freespace. Usedbydataset is larger than volsize

I have a storage with ZFS and Debian wheezy. I am always using the latest ZFS from their github. I created 3 different raidz-3 pools. One for every controller. On every controller I have 24x 4T SATA ...
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1answer
58 views

Cannot create new zpool

I'm working on creating a ZFS zpool and I'm getting the following error: # zpool create main_zfs raidz2 /dev/sdc /dev/sdd /dev/sde /dev/sdf /dev/sdg /dev/sdh /dev/sdi /dev/sdj /dev/sdk /dev/sdl ...
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1answer
108 views

Why does ZFS large file not instantly like btrfs?

Copying a 1TB disk image on a btrfs partition with cp takes less than a second on my Ubuntu 14.10 amd64 with Linux 3.16.0. Why does it take at least 5 minutes and requires > 1 GB to be read on a ZFS ...
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1answer
102 views

ZFS backup advice with another server

I currently have two servers both have the exact same hardware, disks, etc. One server (server1) is going to be the "main" server. It's basically a server with raidz2 that has SMB shares on it that ...
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42 views

How to import ZFS pool with different configuration

After rebooting my ZFS pool was unable to open my main pool. The exact error that I'm getting is: "The pool metadata is corrupted and the pool cannot be opened" When I checked the zpool configuration ...
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62 views

Merge partitions

Due to some unfortunate partitioning I ended up with the following layout: /dev/sda1 (0-120MB) 128MB (boot) /dev/sda2 (128MB-500GB) 500GB (empty) /dev/sda3 (500GB-1TB) 500GB (zfs) ...
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15 views

ZFS allocation algorithm

I'm looking for a way to know which algorithm ZFS is using to find free blocks. By default there are two algorithms: Best Fit First Fit These are automatically changed once a threshold is passed ...
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299 views

What is the kernel syntax when booting from ZFS?

I'm trying to write a grub.cfg completely from scratch that will boot one of several FreeBSD systems off of a single ZFS pool named tank with a set of root file systems named root1, root2, root3. ...
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50 views

Can BTRFS stripe RAID arrays?

I've been using an Ext3/4+lvm2+mdadm file system setup for about 5 years on a file server. This has grown (and moved processors a couple of times) and I've moved disks between systems ...
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98 views

FreeBSD bootloader won't boot from the correct pool

I've installed FreeBSD 10.1 on a system which has two ZFS pools, and which boots from an other hard disk, which contains only the bootloader. The main pool disks are connected to SATA ports on a PCI-E ...
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51 views

ZFS ACL (NFS4 ACL)

I'm using Openindiana (Solaris 10) containers and I want to let users upload web content over sftp I'v managed to setup internal-sftp of openssh and lock user under web root. All the files under web ...
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0answers
47 views

ZFS datasets attribute inheritance

I have a ZFS filesystem on a Solaris system. In one pool I have an ISCSI share and an NFS share. zfs list tank 1,01G 2,88G 24,0K /tank tank/nfs 24,0K 2,88G ...
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102 views

zpool mount issues on boot

Looking for help with errors I'm encountering with ZFS. Firstly, the main issue is that I can't get my zpool to mount at boot, but there are obviously other problems I would like to sort out (see ...
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516 views

Can't load zfs kernel module on Fedora with Secure Boot - “Required key not available”

I'd like to use zfs with my Fedora 20 system. I've installed the ZFS on Linux Fedora repository and subsequently the kernel-devel and zfs package. As far as I can tell, everything was installed ...
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205 views

zpool status hangs forever

Openindiana oi_151a7. zpool with 15x 1TB raidz3 + 2x 8 disk 2TB raidz2. Many disk operations such as zpool status, creating a new iscsi volume (using sbdadm) etc hangs. Using iostat (-xne) I can ...
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54 views

Edit partition of disk part of a ZFS Raid

I've gota strange problem. Since a previous failure from one of my hard drive, I had to replace one of my 4 hdd running in RAIDZ. But since I changed this disk, the last partition of my disk appear ...
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1k views

How to set up ZFS with ZIL and L2ARC SSD?

I have been considering bcache and flashcache. However my friend suggested me something called ZFS. In fact it says that formating disk with ZFS can actually do the exact same thing without kernel ...
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428 views

slow samba seek performance

I am using FreeBSD 9.0 RC3 (PCBSD distro) with samba 3.4.14. I am trying to access portions of several large (4 - 10 GB) files over samba using seek commands, and I am seeing that calls to the front ...
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16 views

BSD crashing after creating ZFS pool

I've just installed FreeBSD 10.1 on a virtual machine (using Oracle VirtualBox), and I'm attempting to enable and setup ZFS. I did the following commands: # mkdir /tut/ - from root dir # echo ...
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168 views

freenas disc problems - smart error - how to repair zfs raid?

Whats the best way to analyse problems on an freenas raid file server? I have troubles with my freenas 9.2.1. It crashed today. Its running a fileserver on zfs jbod raid 2. I'm not sure what exactly ...
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30 views

ZFS swap vdev space accounting

I am on an OpenSolaris system with ZFS on it. I am trying to determine the exact space usage and/or reserved space for the swap vdev. root@storage:~# zfs list NAME USED AVAIL ...