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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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how-to: ZFS design and cache tuning : ARC, ZIL

storage system in consideration from below h/w lying idle: 6 x 300GB 10K SAS; 2 X 146 GB 15K SAS; 12GB DDR2 RAM; Xeon CPU 2.5Ghz two 1GB NIC ports 1 - DLink 1GB ethernet switch (1000/100 MB) 8-port unmanaged Software: nexentastor community 3.0.3 or…
JMS77
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Virtualizing OpenSolaris with physical disks

I currently have a OpenSolaris installation with a ~1Tb RaidZ volume made up of 3 500Gb hard drives. This is on commodity hardware (ASUS NVIDIA based board on Intel Core 2). I'm wondering whether anyone knows if XenServer or Oracle VM can be used to…
Fionna Davids
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Are there any encrypted file systems available for Solaris 10?

BACKGROUND: We are running Unidata 7.2-5 on Solaris 10 for our data warehouse. There is no database encryption option that works well with our applications. We were looking at ZFS, but it seems that ZFS will only be available under OpenSolaris. …
Noah
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Strange ZFS hidden filesystem problem

Half of my ZFS filesystems are hidden in ZFS-fuse. Here's my story: So, I love ZFS. I used it for about six months on FreeBSD, but due to it crashing the kernel during heavy inter-filesystem IO load, I tried switching to Solaris 5.10. That was good,…
RandomInsano
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Writing files directly in zpool

We're on freebsd 8, and i created a zpool of 3 drives. # zpool create mypool da1 da2 da3 Now my question is, can i begin saving files to this?.. we´re talking 1TB of pictures (photography). Or is it required and or safest to create a zfs on it…
Phliplip
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How to recover zfs pool when root fs fails?

I have a FreeBSD 8.0 amd64 box w/ 1 ATA drive for system root and 4 SATA drives as a RAIDZ pool. The ATA drive isn't mirrored nor part of any pool, but also doesn't hold any valuable data (other then the system). How can I recover my zpool if this…
user27138
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Missing whole disk device in OpenSolaris

I have begun experimenting with Solaris and ZFS as a NAS. All was going very smoothly until I had a drive failure. When I replaced the drive, I no longer have a device file mapped to the whole disk. /dev/dsk/c7t3d0 does not exist but c7t2d0 and…
Jeff Mc
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How do I integrate a OpenSolaris NAS with AD?

I basically want a OpenSolaris NAS (ZFS goodies) but I'd like to integrate it with AD, so that when I create a new user in AD, his roaming profile is created in the NAS. That means all his ACLs have to work (I know they're compatible), etc. The…
Neo
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ZFS permission error 'cannot set property' when receiving snapshot from remote machine despite delegated permission

Context I'm setting up ZFS autobackup on my home server for offsite backups. All commands printed below are run as non-root. Problem A 'permission denied' error arises originating from the target machine when the following command is issued: (zfs…
Ostheer
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Does the default zabbix SNMP trueNAS template catch disk failures?

I understand this might be a very basic question, but I would like to know the answer to this question before accidentally losing all the data on the NAS due to multiple drive failures with the first going unnoticed because the pool is technically…
aphid
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zfs send to NAS with PIGZ compression slowness

The following command that I use to backup used to take 5 minutes to complete and since last week it is taking around 25 minutes. This is after restarting a switch stack the server is connected to. The NAS 192.6.222.116 is in a different subnet to…
najarajar
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ZFS: restore pool with detached drive

I have a Debian system installed on zfspool of 4 HDDs (like raid10 - raid0 of two raid1). And was displayed like set of 2 mirrors mirror0 and mirror1 each with 2 HDDs. One of the disks became Faulted. As there was no more free slots in this server,…
ALexJolno
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ZFS on Hetzner Rescue fails with `checking whether inode_owner_or_capable() takes user_ns... configure: error:`

Normally, when booting into the Hetzner rescue system, using the 'zfs' command will automatically install zfs tooling inside the rescue system. This is currently not working; checking whether inode_owner_or_capable() takes user_ns... configure:…
TinkerTank
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ZFS issues with reboot

After a reboot on Debian 11, I experienced 4 drives that just disappeared for no apparent reason. 2 are 'faulted' and 2 says they are unavailable. Question: How do I identify the disks with the numbers given? EX. mirror-1 …
Bill Werner
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How to explain that ZFS' snapshot reports 'WRITTEN' as 4.26GB, but the transfer size is actually 31.4GB?

When I run this query on a dataset zfs list -d 1 -t all -o name,used,refer,written,compressratio sfg-backup/mx I see the following stats: zfs list -d 1 -t all -o name,used,refer,written,compressratio sfg-backup/mx NAME …
dimus
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