Server Fault Stack Exchange
Server Fault Stack Exchange

Questions tagged [zfs]

ZFS is a modern file system and volume manager originally developed by Sun Microsystems and licensed under the CDDL. It is a copy-on-write file system with support for large storage arrays, protection against corruption, snapshots, clones, compression, deduplication and NFSv4 ACLs. 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 & Mac OS X communities.

ZFS is supported out of the box on a number of operating systems:

  • Solaris 10
  • Oracle Solaris 11 Express
  • FreeBSD
  • NexentaStor
  • illumos - specifically, illumos-based distributions, like:
    • Nexenta's illumian
    • Joyent's SmartOS (server OS with strong focus on virtualization)
    • OmniTI's OmniOS (general purpose server OS)
    • OpenIndiana (general purpose desktop/server OS)

Due to license incompatibilities, the CDDL licensed ZFS code cannot be distributed as part of the GPL licensed Linux kernel. Other alternatives methods are available for running ZFS on Linux:

1391 questions
0
votes
1 answer

How to specify the path which is to be tested using iozone?

I have a freebsd install which has ufs filesystem. Inside freebsd i have created a zpool in raidz1. Now i want to perform iozone test on zfs but i am not able to understand how to specify that iozone test on the zpool not the base filesystem.
shivams
  • 469
  • 1
  • 9
  • 15
0
votes
1 answer

Can't find created directory on zfs

I'm using openSUSE 13.1. I created a new directory on a zpool zfs create zpgd0/iSCSI -o compression=lz4 -o atime=off but I'm not looking on that... So I do it again but I'm getting... zfs create zpgd0/iSCSI -o compression=lz4 -o atime=off cannot…
maniat1k
  • 111
  • 5
0
votes
2 answers

How big are my disk arrays?

On my SunOS 5.10 host are there 3 Sun 6140 disk arrays, and I would like to know the disk capacities. According to zpool list do I have a 5TB and 16TB pool. format shows me only 12 disks c2t1d31: configured with capacity of 16.00MB c3t4d31:…
Jasmine Lognnes
  • 2,520
  • 8
  • 33
  • 51
0
votes
2 answers

Possible to put larger disks in LSI arrays?

I have a couple of these LSI arrays LSI Model: 0834 LSI Class: 3600 LSI Name: LSI Engenio LSI product name: 1932 LSI Product codename: Mary Jane Enclosure name: Shea (DM1300) End of Life: 31-Dec-2010 which was bought with 2TB disks. My plan is to…
Jasmine Lognnes
  • 2,520
  • 8
  • 33
  • 51
0
votes
1 answer

add a directory inside freebsd jail

Not sure if this is correct, but i have now installed freebsd 10 on top of ZFS with jails and have created a jail for Mongodb. For the data files I used the following: zfs create -o atime=off \ -o compression=lz4 \ -o exec=off…
khinester
  • 203
  • 1
  • 9
0
votes
2 answers

ZFS didn't expand free space after add

I recently expanded my storage pool "zstorage" by adding two more drives. It had 3 3TB drives in RAID-Z, and I added two more 1.5TB drives also in RAID-Z (which I understand is effectively the same as mirroring). I know it's not the most efficient…
Kevin Wood
  • 393
  • 2
  • 4
  • 8
0
votes
0 answers

Any disadvantage of running a virtual machine using files for its drives hosted on freenas/zfs?

I recently got tired of the really slow I/O reads and latency (10-30 MB/s read, not sure for latency but very slow) from a provider I rent a virtual machine from. He uses freenas, the virtual machine runs on linux. I know this is normal speeds for…
bksunday
  • 125
  • 1
  • 6
0
votes
1 answer

ZFS checksum errors: what files are affected?

Here is a zfs pool with checksum errors: NAME STATE READ WRITE CKSUM pool0 ONLINE 0 0 42 c1t1d0 ONLINE 0 0 30 c1t2d0 ONLINE 0 0 19 c1t3d0 ONLINE 0 0…
Mark Wagner
  • 18,019
  • 2
  • 32
  • 47
0
votes
1 answer

zpool import with missing device

I had two geli-encrypted partitions on separate disk in a zpool as simple disks (no raid*). I didn't want redundancy for all files, only for some selected datasets (for which I set copies=2). Now one disk died (controller doesn't respond anymore),…
Stefan
  • 859
  • 1
  • 7
  • 18
0
votes
0 answers

zfs recovery after hardware failure

My ZFS storage hardware failed including the rpool disks. I installed a new server and tried to import use zfs import -f poolname. I am able to see the pool and the disk utilized. But I am not able to see the volume. Is there is any way to recover…
user1365171
  • 9
  • 2
0
votes
1 answer

Debian KVM and location for vm images different than /var/lib/libvirt/images

I have defined storage pool for VMs on ZFS: virsh # pool-dumpxml zfs zfs b2fba550-467f-8133-dee8-44ada7d0a807 210316853248
LetMeSOThat4U
  • 1,371
  • 2
  • 17
  • 35
0
votes
1 answer

zfs: zpool space map thrashing - ever fixed?

For zpools which are rather full and/or very fragmented I use to enable metaslab debugging (echo metaslab_debug/W1 | mdb -kw) to avoid space map thrashing and the resulting severe write performance hit. The problem itself seems to be old and…
the-wabbit
  • 40,737
  • 13
  • 111
  • 174
0
votes
1 answer

SAS Array with or without expander

Is it better to use a SAS Expander backplane for 12 drives via one SAS connection or is it better to use a SAS backplane with 3 SAS connections? This is in terms of performance, rather than expansion. This array will be setup using ZFS on a…
tegbains
  • 1,986
  • 13
  • 28
0
votes
1 answer

GlusterFs + zfs xattr

i'm trying to setup a small fileserver using GlusterFs over Zfs over two boxes that are currently running ubuntu 13.04. i'm currently using glusterfs and zfs-fuse from ubuntu repositories and with those packages i've been able to create successfully…
Valerio Minetti
  • 343
  • 2
  • 7
0
votes
1 answer

FreeNAS/FreeBSD: How to access status of ZFS volume from jail?

I am trying to set up NRPE to enable remote Nagios monitoring of a new FreeNAS 0.91 system. I mostly have this working. I can connect and inquire about basic information like number of processes, users, etc. But I can't run zpool list to inquire…
StewLG
  • 271
  • 4
  • 6
1 2 3
…
92 93