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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:

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Disk names in Solaris 10 for ZFS: SAS WWN instead of c0t0d0

I currently have a server running Solaris 10u9 with a SAS enclosure (Dell PowerVault MD1000) filled with SATA disks attached to an SAS card (LSI 3801E). It happily recognizes the 15 disks in the MD1000 and presents them each disk in the traditional…
notpeter
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new Nexentastor installation - can't run bonnie

I am new to Nexenta but so far I am liking it. I want to use it to replace Freenas for the ZFS advancements. Anyways I am noticing sort of bad performance with CIFS (30-50MB/s) so I figured I would run some Bonnie tests. but bonnie gives me the…
Luma
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Reset ACLs in NFS4/ZFS network share

How can I reset the ACLs on a ZFS file system on OpenIndiana that is exported via NFS4 and replace it with inherited permissions? Basically, I want to do the equivalent of icacls "C:\path\to\folder" /reset /T /C on Windows on this machine. However,…
Christoph
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Opensolaris, ZFS shares

I've recently updated to OpenSolaris 2010.05 from 2009.06. Its currently set up to share one of the the ZFS zpools to the other machines on my network. However, only a single account is able to access these shares. My other accounts get refused when…
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Solaris disk types: Ramdisk, hard disk, SVM mirror volume.. Are there any others?

I am particularly interested if there are any network mounted disk types that can be used in ZFS.
700 Software
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How to share ZFS features over NFS

We are planning to use some of the features that ZFS has, such as: Snapshots. Hierarchy of file systems (each user will have his own). Custom user properties. Clones. Is it possible to share all this functionality via NFS to Linux client…
Illarion Kovalchuk
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t_delta too long error on Freenas 0.7.1

I am using FreeNas 0.7.1 (FreeBSD 7.2-release-p6) Recently I have been getting a series of these error messages to the console. I am using ZFS pools mirrored on the FreeNAS system, and they report as healthy and in good status. I think this error…
Jeremy Hajek
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Older raid controllers in raid 5 vs. Jbod and SW raid

I'm in the fortunate position to have 6 Supermicro older VOD servers with the following config: Supermicro 3U case, 3xPSU Dual Xeon 3ghz P4 class cpu (5 years old.. havnt checked the exact type) 4GB Ram 3ware 9500-8 SATA controller 8 SATA SLOTS and…
TEB
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Can I re-attach a (ZFS) EBS volume when starting a new EC2 instance?

I'd like to use an OpenSolaris EC2 instance as a DB server, using an external EBS volume connected to a ZFS pool. If I set-up the ZFS pools then bundle-up the EC2 image, could I terminate the instance then safely re-attach the existing EBS volume…
Phillip B Oldham
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Home directory, user database and key-based authentication

I want to share it NFS share with my users just like the home-directories (traditional way), but I don't want to create the users instead I want to get the server integrated with the github or google or opnsense's VPN users database and want to have…
AAB
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ZFS mismatched replication level

I have a RAIDZ1 running 6x 3TB drives, and I want to expand my pool by adding 5x 2TB drives to it. But when I tell it to add to the pool I get this: $ zpool add zpool1 raidz1 /dev/sda /dev/sdb /dev/sdc /dev/sdd /dev/sde invalid vdev…
jfreak53
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Samba Windows ACL not working

I want to configure Samba to manage Windows ACL and manage them from Windows via the security tab. The Samba server is standalone and not part of an AD tree; i already followed various offical and unofficial guides but nothing seems to work. The…
Plokko
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Can I mirror a 2-disk striped zpool to a single large drive?

Currently I have a 4TB pool with two striped drives: # zpool status pool: lxd state: ONLINE status: Some supported features are not enabled on the pool. The pool can still be used, but some features are unavailable. action: Enable all…
Arni J
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How to change keyformat of existing encrypted dataset

I had an unencrytped dataset that for which I used zfs send / receive to create an encrypted dataset with the data. The destination encrypted dataset used key-based creds. I would like to change this to password based auth. Is this possible? Cheers
Harry Stuart
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ZFS I/O Error, Kernel Panic during import

I'm running a raidz1-0 (RAID5) setup with 4 data 2TB SSDs. During midnight, somehow 2 of my data disks experience some I/O error (from /var/log/messages). When I investigated in the morning, the zpool status shows the following : state:…
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