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

learn more… | top users | synonyms

1
vote
3answers
24 views

Having a host with ZFS system, how to make it available to other hosts on local network?

Having a Linux (RHEL 6) host with ZFS system, how to make it available to other hosts on local network (over LAN or InfiniBand if possible)? what shall be done to ZFS pool to make it sharable? how ...
3
votes
3answers
107 views

Bulk remove a large directory on a ZFS without traversing it recursively

I want to remove a directory that has large amounts of data on it. This is my backup array, which is a ZFS filesystem, linear span, single pool. The data is in this pool called san, mounted on /san ...
0
votes
0answers
6 views

zfs dataset constantly unmounting itself after some time, others still available

One of my zfs mounts (one of 4 parent datasets, which includes a few children each) is constantly lost. each time i ssh into this machine, and traverse into the san pool, and move into one particular ...
0
votes
1answer
59 views

How to turn default Scientific Linux on top of some file system into linux on top of zfs?

So I have a cluster with an array of hard drives (say 6), currently they are not in any RAID, on top of one of them I currently have my Scientific Linux installed and running. How to migrate it onto ...
1
vote
0answers
35 views

How to install a system on top of ZFS?

I have a clear system with 5 hard drives, bios. No OS installed, no formatting applied to hard drives. I want to install a Scientific linux (6.6 or higher) OS on top of ZFS on it. What are the ...
1
vote
1answer
81 views

FreeBSD “Fatal double fault” upon entering ZFS encryption password

I have just installed FreeBSD 10.1 Release i386 on a new computer. I pretty much used the standard installer defaults, except I chose ZFS, RAID-Z1, encryption, and encrypted swap, and I did not ...
0
votes
1answer
35 views

How do I test or verify ZFS encryption is working?

How do I test or verify that the ZFS encryption is working, especially when running as a Samba share? Like if I create a ZFS pool with encryption=on, how can I tell whether a file is being properly ...
3
votes
3answers
81 views

Solaris 11 and zfs, i don't understand space used

This is the situation. Solaris11 virtual machine on VirtualBox as guest. Virtual disk is 55GB df report Filesystem Size Used Available Capacity Mounted on rpool/ROOT/solaris-8 55G ...
2
votes
2answers
198 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 ...
1
vote
1answer
46 views

Download small ZFS formatted image

I don't run Linux myself, so I'm the odd one out here, but I have hopelessly been searching for a small image file that contains ZFS (e.g. ZFS formatted media). I like to implement ZFS recognition in ...
1
vote
1answer
115 views

zpool states that zones are in SUSPENDED mode

Zones are in suspend mode how can I bring them up online? Operating system: SunOS xxxxxxbase02 5.11 11.2 sun4v sparc sun4v While listing the pool in global zone I can see four hosts are in suspend ...
1
vote
1answer
48 views

zpool import can't import an online pool

I rebooted my Ubuntu 15.04 server and found that my ZFS pool did not import. I'm puzzled as to why this is happening. Here is the output. root@ubuntuserver:/# zpool import pool: store1 id: ...
1
vote
1answer
42 views

ZPool export/import error

A backup/clone script of ours was recently ran. It normally only clones the rpool and renames in rpoolA. Something must've changed as it found another one of our pools that it shouldn't have. It ...
1
vote
1answer
33 views

How to troubleshoot disk controller on Illumos based systems?

I am using OmniOS which is based off of Illumos. I have a ZFS pool of two SSD's that are mirrored; the pool, known as data is reporting its %b as 100; below is iostat -xn: r/s w/s kr/s kw/s ...
1
vote
0answers
21 views

Sample monitoring of ZFS using mrtg

Was wondering if anyone has a quick and simple mrtg hack to monitor a ZFS file system, thought it would be wise to ask before writing one up myself....
1
vote
1answer
50 views

zpool online doesn't work

I've hard disk failure on this pool. I replace the disk, I don't have any hard error and I can not to put back it online as nofified: :~# zpool status data pool: data state: UNAVAIL status: One or ...
0
votes
0answers
43 views

ZFS Mirror on same drive for redundancy?

The device I would like to use as a home server has only a single 2.5'' internal hard drive bay currently fitted with 1TB. The actual data storage (2x 1TB) will be attached to the external USB 3.0 ...
1
vote
0answers
42 views

Failed umount /home (ZFS) on shutdown

During shutdown I notice an error reported in the logging messages on the screen that the umounting of /home (a ZFS filesystem) failed. (After restart I don't find any respective log entry in the ...
1
vote
1answer
105 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 ...
2
votes
1answer
145 views

zfs deduplication “low” ratio

In Solaris 11, in a pool named mypool I activated deduplication with zfs set dedup=on mypool Then I created two 100 MB file: file1 and its copy file1copy. Only their names are different: their ...
1
vote
1answer
139 views

ZFS Raid or Hardware Raid in FreeNAS

We bought SuperMicro server "SUPERMICRO CSE-826E16-R1200PB" which will be used for storage. Total HDD 10 - 4TB Seagate HDDs 2 - 60 GB SSDs Now im planning to install FreeNAS on it . And i will ...
2
votes
1answer
258 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 ...
3
votes
0answers
153 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 ...
0
votes
2answers
79 views

FreeBSD 10 and ZFS: Methods for encrypting files

I'm in the process of setting up a FreeBSD 10 server on a KVM vserver. I'm really new to FreeBSD in general (coming from Debian Linux). I installed the system choosing ZFS with encrypted root volume ...
3
votes
0answers
113 views

Does ZFS for Linux over stress VirtualBox?

I've been using MD raid + LVM for many years, but recently decided to take a look at ZFS. In order to try it, I created a VirtualBox VM with a similar layout to my main server - 7 'SATA' drives or ...
5
votes
1answer
1k views

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 ...
0
votes
0answers
34 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 ...
2
votes
0answers
67 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 ...
0
votes
1answer
136 views

FreeBSD 10: Do I need jails?

I'm in the process of setting up a FreeBSD 10 server with just some services on a KVM server: NGINX webserver w PHP-FPM 2 domains, 3 subdomains Mailserver 3 Email addresses MySQL (or other) ...
1
vote
1answer
246 views

FreeBSD 10: Disable ZFS full disk encryption

I installed FreeBSD 10.1 and chose to encrypt the ZFS root volume and Swap during install. I'm now realizing that on the remote KVM vserver I'm on the encryption makes rebooting harder and probably ...
6
votes
1answer
3k views

Is it possible to change the sector size of a partition for zfs raidz pool in linux?

I've been migrating a zfs raidz pool on linux to new discs via virtual devices which were sparse files. I've used partitions on the discs as the discs are different sizes of 1.9T each. The last disc ...
1
vote
1answer
72 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 ...
8
votes
4answers
5k views

FreeBSD + ZFS + Encryption? Alternatives? Suggestions?

I would like to create a dedicated physical server which will work as a NAS & fileserver inside my LAN (as well as through VPN). However I need to fully encrypt the drives (both the system ones ...
0
votes
0answers
811 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 ...
0
votes
0answers
67 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 ...
4
votes
2answers
519 views

What's an effective offsite backup strategy for a ZFS mirrored pool?

I use a ZFS pool consisting of two mirrored disks. To get offsite backups going I've purchased two more disks. My initial plan was to create the offsite backup by attaching a third disk to the ...
0
votes
1answer
346 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 ...
1
vote
1answer
106 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 ...
3
votes
2answers
1k views

Solaris 11: Accessing a pool on disk from live DVD?

I made a rather bad mistake while playing around with Solaris 11, which has left me locked-out. I accidently changed the first character of my username in /etc/passwd, and the "new" username is not ...
1
vote
1answer
118 views

Can I use dd to quickly resilver a ZFS mirror disk?

My ZFS pool consists of two mirrored disks. I have two more disks which I plan to use for rotating offsite backups. The first backup disk was added to the zpool and has nearly completed resilvering. ...
1
vote
1answer
162 views

iostat error counters on Solaris

In a Solaris system i use iostat -E and kstat to identify faulted disks. My problem is that I don't know if the problem is on disk, on controller, on bus or on the filesystem layer (ZFS). The key is ...
1
vote
0answers
97 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 ...
1
vote
1answer
67 views

du -sh on a new directory gives different results in different locations

Here's what happened when I created a new directory and immediately ran du on it. There are no contents in this directory. me@mybox[~]$ mkdir /scratch/test2 me@mybox[~]$ du -sh /scratch/test2 4.0K ...
1
vote
1answer
183 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 ...
1
vote
1answer
554 views

The pool cannot be imported, because is formatted using an incompatible version

I can't access my zfs pool on Debian as it's saying that my version is too old: root@Microknoppix:~# zpool import pool: WD_4TB id: 12726205736285302822 state: UNAVAIL status: The pool is ...
3
votes
2answers
529 views

Why does creating a ZPool result in this error?

When I try to create a ZPool, the following error occurs: user@arch ~ % sudo zpool create -f -o ashift=12 -m /data media raidz /dev/disk/by-id/ata-ST2000DM001-1CH164_Z2F0TL8V ...
1
vote
1answer
181 views

Impossible to umount /mnt [duplicate]

I am running Debian kFreeBSD wheezy. Accidentally I mounted my zfs pool directly into /mnt. When I try to unmount I get an error: zfs unmount myzfspool cannot unmount '/mnt': Device or resource busy ...
1
vote
0answers
894 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 ...
1
vote
0answers
160 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 ...
0
votes
1answer
345 views

ZFS support for linux kernel versions 3.16

Attempting to boot Funtoo with a debian-sources-3.16.2-3 kernel, in a system where the root file-system lives in a zpool, drops off to the rescue shell after failing to import the pool properly. Does ...