ZFS is supported out of the box on a number of operating systems: Solaris 10 Oracle Solaris 11 Express FreeBSD NexentaStor Enterprise illumos - specifically, illumos-based distributions, like: Nexenta's illumian Joyent's SmartOS OpenIndiana Due to license incompatibilities, the CDDL licensed ...
2
votes
1answer
33 views
Cacti displaying an odd Total Space value for free disk space on ZFS mount
I'm not sure if this is just a quirk of how ZFS ZPL is presenting the available space, but it seems that SNMP is reporting the free space no more than 2TB higher than the used space.
This is on a ...
1
vote
1answer
101 views
Ubuntu and ZFS, loses pool on reboot
I'm using a fresh install of Ubuntu 12.04 LTS, with the ZFS PPA.
I'm finding when I create a pool it will mount and function fine, but after a reboot it shows as UNAVAIL and I can't find a way to ...
4
votes
1answer
114 views
Solaris 11 hangs randomly: need help to figure out the reason
I've got Solaris 11 (+latest SRU) running on an HP DL385 G7 (attached to P2000 storage w. 30 disks; they are registered as separate RAID0 drives, but I'm using ZFS' raidz1), which is our file server. ...
2
votes
1answer
48 views
Moving data from linux mirrors into freebsd ZFS
I got an 3 years old computer with 4GB RAM Dualcore/Intel, and 4 hotswapable SATA HDD's (500GB each, 2+2 in LINUX RAID-1 configuration - so i have 2 500GB mirrored volumes). Each volume is full of ...
1
vote
3answers
48 views
Migrate a zpool to a zfs partition
I have a zpool with two disks in mirror-mode. The zpool is directly mounted to /tank. Now I want to create zfs partitions and no longer mount the whole pool. Therefore I need somehow to move all data ...
0
votes
0answers
40 views
ZFS send/receive and mysterious data dissapearance
Odd behavior after zfs send/receive. Very basic command set here:
I had created a snapshot to replicate from:
# zfs send tank/storage1@04172012 | zfs receive -F usb1/storage1-slave
...
1
vote
2answers
156 views
is zfs disk rotting protection automatic and built in?
some presentation declares that zfs has:
zfs can detect and correct silent data corruption.
e.g. from here http://www.eecis.udel.edu/~bmiller/DE-OSUG/ECECIS-ZFS.pdf
But do you need to ...
0
votes
2answers
191 views
grow/shrink a zfs RAIDZ
I'm going to build a freenas server, would like to make sure what I can do with such magical and advanced zfs.
If I have a 3TB * 5 in RAIDZ (12TB storage in total), now I am trying to add another 2 * ...
1
vote
2answers
95 views
Xen 4.1+ with local ZFS storage
I'm speccing out sandbox VM servers for developers at my company. The requirements for the dom0 hosts are: local, deduplicated ZFS storage (no separate storage servers), and Xen 4.1+ (4.2 is ideal).
...
0
votes
2answers
35 views
ZFS pools and filesystems
is there any way to understand (using zfs and zpool commads) to whcih pool is a ZFS filesystem assigned?
Thanks in advance
1
vote
2answers
105 views
Any way to know what files were in a broken ZFS pool?
I have a large ZFS pool of 4 combined drives. Now, the filesystem can not be mounted:
pool: tank
state: UNAVAIL
status: One or more devices could not be opened. There are insufficient
...
-1
votes
1answer
98 views
Is there a way to get Drobo-like functionality out of ZFS (or some other free FS)? [closed]
I really like the concept of the Drobo, I just don't like the speed. I want the redundancy and easy upgradeability of the Drobo, but faster. I would love to be able to build something on my own. ...
2
votes
2answers
80 views
ZFS: Is there a way to find out where the blocks for a file are stored?
Is there a way in zfs to find out where blocks for a particular file are stored? I'd like to be able to ask for the locations of all the blocks for a file, including ditto blocks.
(Yes, I understand ...
8
votes
2answers
141 views
ZFS: How do you restore the correct number of copies after losing a drive?
With zfs, if you have copies=2 and then you lose a drive containing some of those copies, how do you tell the system that it should make a new copy of the data blocks for the affected files? Or does ...
2
votes
2answers
159 views
Are there any PCIe SSD cards compatable with OpenIndianna (OpenSolaris) and/or FreeNAS (freebsd) 8+?
Has anyone had any success at all with any PCIx SSD cards around the 200GB+ mark under FreeNAS 8 or OpenIndiana? Specifically either of these platforms because of ZFS support for which we'd be using ...
-1
votes
1answer
83 views
Debian on HP ProLiant server hangs (disk i/o is my guess)
I installed Debian (2.6.32-5-amd64) on my HP ProLiant MicroServer (purchased recently.) I also added 3 2tb hd in zfs. I've experienced several server froze. Sometimes it showed Soft lockup CUP stuck ...
4
votes
1answer
143 views
FreeBSD Host ZFS on Root Running VirtualBox with Windows Server 2003 Guests Very Slow HD Speeds
Here is my setup: I am running a Dual Quad Core Xeon 2.0Ghz with 16GB of Ram and 2 x 2TB WD Green drives with FreeBSD 7 that has ZFS on root. The Hard Drives are in a ZFS Mirror. I am running ...
3
votes
2answers
220 views
Building one big filesystem with JBOD and ZFS
How to build a really big ZFS filesystem?
The above question is vague in the 1st reading, so more precise.
I know how to build big ZFS volume with one computer. e.g.
get a good computer with ECC ...
7
votes
1answer
154 views
ZFS replication between 2 ZFS file systems
I initially replicated tank/storage1 --> usb1/storage1-slave (depicted below), and then (deliberately) destroyed the snapshot I replicated from. By doing this, did I lose the ability to incrementally ...
9
votes
3answers
781 views
150 TB and growing, but how to grow?
My group currently has two largish storage servers, both NAS running debian linux. The first is an all-in-one 24-disk (SATA) server that is several years old. We have two hardware RAIDS set up on it ...
2
votes
1answer
110 views
Expanding raidz vdev
I'm currently planning on installing FreeBSD 9 on my home server. The machine has 4x 1.5TB disks, and at some point, when HDD prices drop I'll be upgrading to something bigger, perhaps 3TB.
The disks ...
1
vote
1answer
109 views
Solaris Administration Web GUI?
I recently installed Solaris 11 x86 text install ( http://www.oracle.com/technetwork/server-storage/solaris11/downloads/index.html?ssSourceSiteId=ocomen) to be used as a file server running ZFS.
I ...
1
vote
2answers
258 views
Poor ZFS (raidz) i/o performance in Debian
The problem I am facing is on my Debian box (HP MicroServer N40L) running ZFS, which is compiled from source downloaded from zfsonlinux.com, seems to perform poorly.
The pool is created from 3 ...
4
votes
3answers
239 views
Is a large RAID-Z array just as bad as a large RAID-5 array?
For a long time I've heard about how bad an idea a large (>5TB?) RAID-5 array is simply because there's a high risk for another drive to fail.
Has RAID-Z1 managed to remedy this for an array of any ...
2
votes
2answers
99 views
In ZFS, what is the difference between the various zpool versions?
According to this wiki article
http://en.wikipedia.org/wiki/ZFS
there are a number of zpool implementations out there. For example, OpenSolaris and derivatives are at 28. While FreeBSD 8 appears to ...
2
votes
1answer
115 views
ZFS CIFS shares, clients can't see mount points of other shares in root folder?
I'm in the process of migrating data from a Win2k3 file server to a box running Solaris. All was going well until I started coming across nested shares. An example of this is a share that the ...
1
vote
1answer
210 views
Solaris 10 ZFS boot: how to add mirror of boot drive
I have a working Solaris 10 box whose boot / disk is using ZFS.
I'd like to add another hard drive and mirror this boot drive.
When I run the command I believe is correct (below) I get an error:
...
2
votes
2answers
284 views
What design features make Joyent's ZFS and Amazon's EBS (S3) reliable?
I know this isn't exactly an apples to apples comparison, what I'm trying to evaluate is which one is safer - less likely to lose data.
Joyent's SmartOS uses ZFS to store data whereas an EC2 machine ...
2
votes
3answers
455 views
Ubuntu + ZFS: How to migrate entire system to new disks?
Here's my scenario:
I have Ubuntu with native ZFS installed on a server with 2 x 500 GB SATA disks. I installed it following this guide: ...
2
votes
1answer
119 views
FreeBSD: How to know real file size on zfs with compression on?
I'm using zfs on my FreeBSD 9.0 x64 and pretty happy with it, but I find it hard to count directory real, not compressed, size.
Surely I can walk over the directory and count every file size with ...
4
votes
2answers
176 views
Recover NTFS data from a ZFS pool that was exposed as an iSCSI target
This was me being stupid and the data is by no means critical and is now a learning experience first, time saver second.
I set up a 100GB iSCSI target via the bare bone instructions in napp-it. It's ...
0
votes
1answer
115 views
What's the best file system for a 200TB Array on a MacOS 10.7? [closed]
We have a Mac server (10.7) with a 200TB disk array. We're trying to decide between HFS+ and the unsupported ZFS. Which should we use, why, and is there another choice that we haven't considered?
7
votes
0answers
214 views
Freenas 8 — cannot move files between ZFS volumes
My freenas 7 worked reasonably well. When I did a fresh install of freenas 8 it became impossible to copy or move files from one ZFS volume to another.
E.g.,
/tank/
/tank/content/
/tank/archive/
...
-1
votes
2answers
712 views
Will a SSD cache increase Native ZFS performance for me?
I'm using Ubuntu 11.10 Desktop x64 with Native ZFS using a mirrored pool of 2x2 TB 6.0 Gbps hard drives. My issue is that I'm only getting about 30 Mb/s read/write at any time, I would think my system ...
2
votes
2answers
192 views
hosting iscsi on smartos
I am trying to get back into the unix game for some storage projects we have got going. We would love to use joyents smartos (based on illumos) for that.
Working with it is a real joy (setting up vms ...
4
votes
3answers
405 views
Where can I find introductory documentation for ZFS?
I recently installed OpenIndiana because of an interest in ZFS. I like the feature-list of ZFS, but I'm having a hard time wrapping my head around how to configure it. All of the documentation I ...
1
vote
1answer
90 views
FreeBSD: Error creating new slice using gpart
The virtual hard disk of one of my VPS has been enlarged, and I want to create a new ZFS slice using the extra space, but I couldn't be able to perform that.
# gpart add -s 10G -t freebsd-zfs da0
...
7
votes
2answers
233 views
zfs and future expandability
I want to build a server using freebsd 9 and zfs. I have some old hardware (intel quad core with 8 gb ram) lying around, and I am willing to purchase two or three 1 TB disks. I also have a dlink RAID ...
1
vote
1answer
343 views
ZFS and FreeNAS Performance
I have just set up an HP Micro Server N40L as a FreeNAS with 4 2tb drives in a RAIDZ. I am getting around 30-40MB/sec, with occasional bursts of 50MB/sec., reads and writes that are similar to the low ...
2
votes
2answers
261 views
ZFS RaidZ Import Failure when migrating
So my the USB drive attached to my FreeNas 7 system, went bad so I used the situation as an opportunity to upgrade to FreeNas 8. The problem is now I'm having trouble getting my ZFS to spin up:
...
9
votes
2answers
545 views
Since upgrading to Solaris 11, my ARC size has consistently targeted 119MB, despite having 30GB RAM. What? Why?
I ran a NAS/SAN box on Solaris 11 Express before Solaris 11 was released. The box is an HP X1600 with an attached D2700. In all, 12x 1TB 7200 SATA disks, 12x 300GB 10k SAS disks in separate zpools. ...
2
votes
3answers
119 views
ZFS, raidz1: Why is the volume size (42T) so much smaller than the pool size (50T)?
I have a pool of 28 2TB-disks (56T) in 4 arrays of 7 disks. Since it's raidz1 (~RAID5), I'd expect 1 disk to be used for parity in each array, so the resulting volume should be 2TB*4*(7-1)=48TB, ...
0
votes
2answers
205 views
Undelete ZFS file shared by Samba
A user deleted a directory containing an important file over a Samba share.
Share was from a Nexenta box running ZFS, raid-Z3.
Last backup was 12 hours ago - is there a way to recover the 1 day's ...
1
vote
2answers
80 views
Mounting hdds in Solaris
I'm new to Solaris and trying to set up zfs pool but when I try this command: zpool create mirror tank c3t2d0 c3t3d0, I get this error: cannot open c3t2d0 no such device in /dev/dsk.
After checking ...
1
vote
0answers
156 views
Looking for tutorial on FreeBSD based Samba server on ZFS filesystem with OpenLDAP backend [closed]
I am looking for a tutorial for specially:
FreeBSD 8.2 with ZFS as storage (this has been done)
Samba as fileserver
OpenLDAP as user storage
I have set up a FreeBSD 8.2 with ZFS for filestorage, ...
4
votes
3answers
755 views
ZFS Pool with Different Drive Sizes
I am planning on setting up a FreeNAS ZFS pool using two 2 tb drives and two 1tb drives. I would like to have data redundancy somehow. I read this post which seems to suggest my two options are to ...
6
votes
3answers
354 views
“zpool replace” hangs and locks up the pool
Given my four disk RAIDZ1, one disk has become physically noisy, not producing errors yet, but not sounding healthy either. So I've chosen to pre-emptively replace it.
I have done:
zpool offline ...
0
votes
1answer
326 views
Dell PERC 4/DC (PowerEdge 2850) and ZFS
I understand that ZFS prefers to have as much data about the drives as possible, and that the best thing to do is turn off RAID.
The hardware environment is a Dell PowerEdge 2850 with PERC 4/DC and ...
4
votes
2answers
270 views
zfs-fuse file permissions problems on CentOS/RHEL 5
I'm working with zfs-fuse as a way to provide filesystem compression on existing CentOS 5 servers. I'm dealing with a highly-compressible dataset (80%), so zfs-fuse comes in handy. I'm encountering ...
2
votes
2answers
233 views
ZFS: Redistribute zvol over all disks in the zpool?
Is there a way in which ZFS can be prompted to redistribute a given filesystem over the all of the disks in its zpool?
I'm thinking of a scenario where I have a fixed size ZFS volume that's exported ...
