ZFS is a modern filesystem originally developed by Sun Microsystems and licensed under the CDDL. An open-source fork of ZFS can be found at http://open-zfs.org/ , which is supported by ZFSonlinux.org, illumos.org and ZFS developers in the FreeBSD & MacOSX communities.

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2
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2answers
147 views

Would storing logical volumes on a ZFS storage benefit from caching?

What I'm planning to do is having a ZFS storage connected to my network. Attaching it with either iSCSI or SRP to the hypervisor server. And storing KVM images (logical volumes) on it. Would this ...
1
vote
1answer
813 views

How to remove the OpenSolaris ZFS dump device

The ZFS dump device is used only for debugging problems. In this case, I have decided the risk vs reward is such that I should delete the dump device to make room for other storage. I am able to ...
1
vote
3answers
1k views

ZFS on KVM virtualised server. Should I run ZFS on the host or the guest?

I'm planning to run ZFS on Linux (latest Ubuntu stable ppa). The hardware is a xeon E3-1270 with 24 GB of RAM, 6 SAS ports on the motherboard, and a supermicro HBA with 8 SAS ports. I plan to have 4 ...
2
votes
1answer
344 views

Disk replace breaks disk naming convention in zpool

After replacing two broken disks in my RAID-Z2 pool, the output of zpool status looks strange. The disks are addressed with their full path and also seem to contain 'slices', which all other disk ...
-2
votes
2answers
115 views

Mac files on Windows server (loses some data) [closed]

We added 2 Mac's to our Windows network. We are finding that some users are deleting the Mac hidden files that provide Finder meta data. Also, if a Mac user moves a file to another folder, they don't ...
0
votes
1answer
344 views

Netatalk 3.0.1 disconnects with Bad file descriptor on FreeBSD

I am having trouble with my netatalk server 3.0.1 on FreeBSD-9.1 RELEASE. Netatalk was installed from the ports collection and is sharing some directories over the network. Update also netatalk ...
6
votes
3answers
3k views

Are ZFS clustered filesystems possible?

Is it possible to create a ZFS cluster? Or would you need to go the seemingly ugly (to me at least) route of ZFS with UFS formatted pools governed by GlusterFS? The idea is to see if it is possible ...
2
votes
1answer
146 views

Is it possible to access the ZFS checksums to compare files

I have a FreeNAS 8 machine (FreeBSD 8.2-RELEASE-p1) with two different shares on it. I'm migrating files from Share1 to Share2. The Shares have different directory structures and naming conventions. ...
2
votes
2answers
267 views

Deduplication of tar archives

Now I'm trying to configure ZFS with deduplication on my linux backup server and have a question. For example I have 1k files in backup1.tar and 1k same files and 1 new in backup2.tar. This files ...
1
vote
2answers
833 views

ZFS iSCSI and free capacity in VMFS

I use ZFS in FreeNAS 8.0.4 and use iSCSI to provide a LUN to Vmware ESXi 5.0. I post it at http://forums.freenas.org/showthread.php?10990-Memory-utilization-and-performance-problem/page4, but I ...
-1
votes
1answer
2k views

Ubuntu 12.04 RAID 5/6: Native RAID or ZFS?

I have 8 hard drives of different sizes that I want in a RAID 5 or 6 configuration, the OS is Ubuntu 12.04 desktop. Does the native RAID in Ubuntu support RAID configurations with hard drives of ...
1
vote
1answer
87 views

Available space on disk array, running Raid-Z1?

I just installed NexentaStor Open Source on a Dell R510. I created a Raid-Z1 with 4 x 2TB disks. No Spare disks configured. NexentaStor now tells me the the Datasat have 7,35TB free space, I was ...
6
votes
2answers
563 views

Why did I experience checksum errors with a ZFS filesystem on an ESXi RDM?

I have a VMware ESXi 4.1 server which I recently added 2x1TB SATA drives to. This machine runs a NexentaStor Community VM which hosts ZFS filesystems. Before adding the new drives, all the ZFS zpools ...
2
votes
1answer
448 views

ZFS / FreeNAS - Matching Config Performance Discrepancy

I have 2 new servers with the exact same hardware running FreeNAS. There are 30 4TB drives in each enclosure. Each has the exact same zpool configuration (5x 5 4TB drive RAIDZ volumes, 3 spares, ...
0
votes
1answer
70 views

How to mount zfs pools created on a different disk

I Upgraded my kernel and the driver letter changed so I lost my zfs disks (this is a test system). So I wanted to know how to recover them.
2
votes
3answers
3k views

how do I add a new disk to ZFS and make it available existing mountpoints if the current pool is root pool?

My S11 server has the following configuration: disk #1 is used for rpool, which is the root pool I want to add disk #2 to increase the size available for the already mounted folders, but I can't add ...
0
votes
2answers
101 views

raidz plus mirror on the same disk different slice in 2 pools

I need a little assistance. I have 6 2TB disks. I'm planning to assign approximately 500GB to my root pool slice 0 mirrored with another disk, since one disk isn't used up I then decided to do a raidz ...
0
votes
1answer
149 views

Migrating data from software raid mirror to ZFS mirror

With a setup with two disk is there a way to migrate from software RAID1 to ZFS mirror ? This kind of procedure would be inspired by the migration that is possible from a disk stored on a single ...
1
vote
2answers
297 views

Adding raw storage - iSCSI or VMDK?

We have about 10TB of files that we use on our fileserver. I'll be setting up a new server with more space and better backups. We have a SAS box with 24 drives connected to OpenIndiana server ...
1
vote
0answers
372 views

ZFS Faulted and I can't remove the faulted disk

Friends, had one hard drive fail in a 4x1.5 TB ZFS setup and am now stuck. status output is below. Since it's a raidz1 vdev, I am still hoping for recovering it. My issue is that since I cannot ...
4
votes
2answers
145 views

Can I have two zpools using different ZFS version on one server?

I just upgraded from FreeNAS 0.7.2 to NAS4Free 9.1 and have an old ZFS pool imported. Freenas used ZFS v15 and Nas4free is using v28. I would like to wait a bit before upgrading, but have a new disc I ...
1
vote
2answers
776 views

Xenserver 6.1 and ZFS file server

I want a paravirtualized ZFS server for Xenserver 6.1 supporting a 6+ TB zpool. The old templates for Xenserver 6.0.2 and FreeBSD 9 don't work. I have been unsuccessful ("Not a Xen-ELF image...") at ...
4
votes
1answer
139 views

Freenas ZFS creation error

I'm using a fresh installation of FreeNAS-8.3.0-RELEASE-p1-x64 (r12825) and I've got a problem with the zfs setup. For example: When I create a new ZFS volume using the GUI with my 2TB harddrive the ...
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votes
1answer
157 views

ZFS System on Production [closed]

Do you know/have any system which works on ZFS such as RDMS? If yes, what is your setup? FreeBSD, ZFS on Linux etc.
2
votes
1answer
421 views

FreeNAS: Renaming a zpool

Now that our server is set up, I would like to rename our zpools. I read somewhere that the way to do this is export & re-import under the new name. But will all my mount points and shares remain ...
2
votes
2answers
1k views

Can I move a ZFS pool to another computer?

I have an EasyStore NAS running Ubuntu, and I want to replace the disks. I want to add the ZFS kernel modules and create a ZFS RAIDZ pool. Due to space constraints, I have to move the data to the new ...
2
votes
1answer
353 views

Why is MySQL unable to open hosts.allow/hosts.deny?

I have a storage server running Nexenta (OpenSolaris kernel, Ubuntu userspace) with MySQL on top of a ZFS storage array, using innodb_file_per_table and ulimit -n set to 8K. mysqltuner.pl confirms ...
-2
votes
1answer
201 views

Move data to a new zpool [closed]

I want to create a new Zpool and move data from an old zpool The old zpool is like this: rpool [mirror-0 (c1t0d0s0 c1t1d0s0) ] I will insert two new hard drives and want to configure a new ...
1
vote
2answers
855 views

ZFS/Btrfs/LVM2-like storage with advanced features on Linux? [closed]

I have 3 identical internal 7200 RPM SATA hard disk drives on a Linux machine. I'm looking for a storage set-up that will give me all of this: Different data sets (filesystems or subtrees) can have ...
1
vote
2answers
323 views

How to check that all ZFS snapshots within a pool are without holds before destroying that pool

Question Already I can check each snapshot of a filesystem individually, manually. I would prefer to check all at once (all with a single command or script). Please: can that be done with a ...
5
votes
3answers
416 views

What is the ZFS ACL limit?

Does anyone know how many user ACL's ZFS can handle? With other words: for how many users can I set ACL's like this one for the same directory? setfacl -m user:test1:rwxpDdaARWcCos:fd----:allow ...
1
vote
0answers
222 views

Freenas - Expanding volume

We currently have a server with 5x3TB disks configured as a RAIDZ: zpool status pool: raid-5x3 state: ONLINE scrub: none requested config: NAME STATE ...
3
votes
2answers
3k views

Non-ECC memory with ZFS: a stupid idea?

I have a new server and am planning to upgrade the paltry 2 GB of memory to the maximum of 16 GB. (Theoretically 8 GB is the limit, but empirically 16 GB has been shown to work.) Some guides advise ...
0
votes
1answer
610 views

Write access from a Windows client via a ZFS SMB, to a file created on the host in OpenIndiana

I've got an OpenIndiana server running ZFS that is shared using a nobody user and group. I don't fully understand Solaris ACL permissions, but I do know Linux style permissions. The client is Windows ...
0
votes
1answer
452 views

zfs pool error, how to determine which drive failed in the past

I had been copying data from my pool so that I could rebuild it with a different version so that I could go away from solaris 11 and to one that is portable between freebsd/openindia etc. it was ...
0
votes
1answer
276 views

How to find maximal value for “zfs set quota” without changing quota?

How do I find out how far I can go extending the quota on a ZFS file system (Solaris 10)? I was told to set zfs set quota=none and then set it back to the original value, but I'm not allowed to do it. ...
4
votes
1answer
2k views

How to NFSv4 share a ZFS file system on FreeBSD?

Using FreeBSD 9, and created a ZFS file system like so zfs create tank/project1 zfs set sharenfs=on tank/project1 There are many howto's on setting up NFSv3 on FreeBSD on the net, but I can't find ...
2
votes
2answers
251 views

recursively mounting ZFS filesystems?

I'm aware this more of a beginners question, but manpages, google and FreeBSD Handbook provided no solution. I'm using ZFS Version 28 on a 8.2 Stable FreeBSD and my problem is the following: When I ...
1
vote
0answers
172 views

Solaris x86 11.1 and qlt driver — only 3/4 ports attach

I'm using the QLogic QLE2564 4-port 8Gb HBA. The problem I have is that when I attach the qlt target mode driver to the card, only 3/4 ports attach the driver. ffffc10006854e58 pciex1077,2532, ...
3
votes
1answer
395 views

Does NFSv3 respect ZFS ACL's?

NFSv3 of course doesn't support ZFS ACL's, but what will happen if I have the following setup?: +-----------------------------------------+ +-------------+ | FreeBSD ZFS serv1 ...
2
votes
1answer
164 views

Why is ZFS replication single threaded?

On my 8 core NAS I see only one core maxed out when ZFS replication over SSH is running. I would expect that transferring a snapshot would scale perfectly with the number or cores, as the snapshot ...
1
vote
2answers
291 views

How to configure HA iSCSI for Solaris 10

BACKGROUND: We have a StarWind NAS that we are currently using for High Availability storage with our Windows network. Starwind has mirrored drives and multiple ip paths, that the Windows Server ...
3
votes
1answer
110 views

Migrating ZFS from using partitions to using the entire disk

I have a simple ZFS setup that I've been running for a few years now. When I originally set it up, I created a number of partitions and created a zpool from a partition on each of my two drives, and ...
2
votes
2answers
735 views

can I consolidate a multi-disk zfs zpool to a single (larger) disk?

I have this zpool: bash-3.2# zpool status dpool pool: dpool state: ONLINE scan: none requested config: NAME STATE READ WRITE CKSUM ...
1
vote
1answer
168 views

Pool + ZFS Folder size not matching in OpenIndiana & Napp-IT

I created a 59.7TB Pool with 8x RAIDZ2, 8x RAIDZ2, 6x RAIDZ2, 2x Spare (3TB HD) The pool shows up at 59.7TB. This is exactly what I expected. Then I go to create a ZFS Folder and it says I only have ...
2
votes
1answer
199 views

smartOS HPC config suggestion

I'm configuring a brand new HPC server and am interested in using SmartOS because of it's virtualization control and zfs features. Does this configuration make sense for a SmartOS HPC, or would you ...
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votes
2answers
525 views

How much overhead does ZFS have? [closed]

Adding a file system to a raw device of course takes up some overhead. The question is how many percent does ZFS take? And does overhead differ depending on the ZFS raid set? Update The purpose is ...
0
votes
2answers
66 views

ZFS terminology: does 'root file system' accurately describe the file system at the root of a pool?

I began using the expression root file system. Recently in search engines I see, that three-word expression has different interpretations in relation to ZFS. To avoid future misunderstandings: ...
4
votes
1answer
725 views

mdadm+zfs vs mdadm+lvm

This may be a naive question since I'm new to this and I cannot find any results about mdadm+zfs, but after some testing it seems it might work: The use case is a server with RAID6 for some data that ...
2
votes
0answers
163 views

Can't remove zfs log device from pool

I run a FreeBSD 9.0 server with ZFS pool version 28 and ZFS version 5. I had two pools with a log on ssd's two partitions. These pools was created on FreeBSD 8.2 with ZFS pool version 15, and ZFS ...