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

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835 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 ...
4
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1answer
3k views

How to replace a disk in a non-redundant ZFS pool?

I've been doing a bit of reading, and it looks like ZFS doesn't like disks being removed from non-redundant arrays: You can use the zpool detach command to detach a device from a mirrored storage ...
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2answers
286 views

Can one use a md-type raid-0 as a drive for zfs pool

I want to play with ZFS at my CentOS. At the moment I have two 750Gb drives and two 400Gb spare drives that I could use. Of course the simplest solution would be to take all of them and use only 400Gb ...
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1answer
2k views

zpool import - cannot import: one or more devices is currently unavailable

I have moved a ZFS pool from one SunFire server running some pre-release of Solaris 11 to another server running latest Solaris 10 and now can't import it. It was properly zfs export from the old one. ...
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3answers
346 views

How can I get rid of this invisible file?

Background I have a folder named akorgāœ½. That Unicode character causes headaches for me when software makes incorrect assumptions about the text encoding of my file paths, so I'd like to remove it ...
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2answers
1k views

ZFS on Linux and Amazon EC2

I have a situation where I need dynamically expandable storage space on a Linux machine running in Amazon EC2, and ZFS came to mind. If I remember properly, ZFS supports a way to dynamically expand a ...
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1answer
372 views

ZFS on Linux gets corrupted on export [closed]

Edit: I am not using Sabayon Linux anymore. I suggest to close this question. I just started experimenting with ZFS on Linux. I use Sabayon Linux with kernel 3.8. I used a whole single USB disk to ...
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2answers
149 views

Encrypted disk filesystem compatibilities

On my Debian Linux system during the install I decided to use disk encryption (the one offered during a regulard Debian install). When the system boots up I need to enter a password and then the ...
2
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1answer
143 views

zfs send volume fluctuates misteriously

Why would the amount of data in a zfs send stream "fluctuate"? I would expect send of a specific snapshot to always produce exactly the same data! The test data below was created through something ...
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0answers
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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4answers
465 views

targeted network speed over LAN

I have a Solaris 11 system which has several NFS exports which are accessed my other systems within my LAN. I use a Linux system as a client for testing. I wrote a quick script to test read speed and ...
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2answers
177 views

zfs one pool error

I have zpool with name zroot and zroot has 4 pool when electricity down system reboots and than i saw some error with 1 pool: Solaris: Warning: can`t open object for zroot/var/crash log_sysevent: ...
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1answer
490 views

FreeBSD: Remove symlinks in devfs

Background I have been rebuilding a small home NAS. This server represents my first 'real' foray into the world of server administration and it has taught me quite a bit already. Originally, the ...
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2answers
2k views

Mixing 4k/512 drives with ZFS (FreeNAS)

I have the following drives: Seagate Barracuda ST3200054AS WDC WD20EADS-00S2B0 Samsung HD204UI As far as I understand, the first are ordinary 512 drives while the last is 4096 (Advanced format). ...
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2answers
1k views

Is there a way to create cow-copies in ZFS?

I am trying to make cow-copies of some files/directories, but of the several ways I know of, all seem sub-optimal. For example, btrfs can, with the use of cp --reflink=auto quickly generate ...
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1answer
938 views

AES-NI accelerated ZFS v31 encryption in Solaris 11

I'm not quite sure if this is the right place to ask this, if not, feel free to migrate it to wherever it fits in. I'm testing the encryption feature in ZFS v31 in a Solaris 11.11.11 VM under ESXi ...
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2answers
1k views

The receiving of returns by Nagios from script through NRPE

I am using nagios3 and want to collect some information from nrpe_server. Next script is at nrpe_server: #!/bin/sh #set -x # script for checking disk usage on ZFS # requires min zpool version 13 or ...
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4answers
4k 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 ...
3
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1answer
910 views

24 hour crash course in ZFS… some final questions

Due to various circumstances I've given myself a crash course on the ZFS file sytem. I need some help getting comfortable with the unknowns. Whatever those are. Data: Running www.zfsonlinux.org on ...
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2answers
313 views

FreeBSD zfs timeout errors

I have FreeBSD 8.2 with ZFS v28. 8 cpu core, 16Gb ram. Two disk drives (1.5Tb WD Green) on zfs mirror raid. My system strangely uses memory. With alot of free (wired) memory it start to use swap and ...
2
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1answer
266 views

FreeBSD zfs create gpt

How can i create gpt marks on working system. NAME STATE READ WRITE CKSUM zroot ONLINE 0 0 0 mirror-0 ONLINE 0 0 0 ad4p3 ONLINE ...
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0answers
413 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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1answer
506 views

ZFS adding new device to RAIDZ

I wondering about problem with adding new device to ZFS RAIDZ. I'm thinking about it only theoretically: After destroying ZFS pool with only RAIDZ in it. The data should be still there on the disks. ...
2
votes
1answer
610 views

adjust zfs settings on freebsd 9

What's the proper way on FreeBSD 9 to tune ZFS parameters such as vfs.zfs.arc_max and vfs.zfs.vdev.cache.size? I've seen references to /boot/loader.conf, /boot/kernel.conf and /etc/sysctl.conf but I ...
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1answer
801 views

Allowed and safe characters for ZFS filesystem in FreeBSD

Which characters are allowed and safe for ZFS file system name? Are this characters only ASCII or UTF-8 is supported? '@' is not allowed because it is reserved for snapshots. PS: I play with FreeBSD ...
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1answer
719 views

How to use keyfiles,for ZFS whole disk encryption?

Does anyone have a working implementation using keyfiles, preferably on SD Card, instead of a prompt for ZFS? I know how to do this with linux LVM/LUKS. In my opinion the FreeBSD full disk ...
4
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1answer
473 views

Why is my CIFS share showing the same files multiple times?

I asked this on ServerFault but received no response, so I figured I'd give it a try over here instead! I have a Debian backup server running the FreeBSD kernel and a ZFS filesystem on which I store ...
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1answer
2k views

Compared to other filesystems why is ZFS so slow, with incoming data?

Ok. I get about 1/3 of the speed on the same drives when using ZFS. Now, I understand that ZFS is self-healing and that everything is also stored with its hashes. This makes it safer to use. I ...
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4answers
523 views

The future of OpenSolaris

since OpenSolaris is more or less abandoned by Oracle, is there a nice alternative that implements the unique features of OSOL? ZFS is one thing, but I liked the image creation system, that let you ...
9
votes
1answer
290 views

What are you going to do with your OpenSolaris machines?

I have a file server running OpenSolaris (mainly for ZFS, which I really love), but since Oracle has abandoned it, I'm starting to think about what I'm going to do with the OS on that machine. ...
36
votes
7answers
2k views

ZFS under Linux, does it work?

Could I get ZFS to work properly in Linux? Are there any caveats / limitations?