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.

Filter by
Sorted by
Tagged with
0
votes
1answer
30 views

Add users, permissions of folders, etc on ZFS pool

First of all, I'm still learning Unix basics :) so sorry in advance. I had created on my home server ZFS pool by Proxmox as "root". After that I created Linux Mint virtual machine ( with &...
1
vote
1answer
51 views

Zero downtime with Kubernetes on top of GlusterFs on top of a ZFS raid - Is this the best solution?

TL;DR A client requests me to make a robust system to run containerized microservices within their LAN. Restriction: They give me 2 machines and 6 data-disks. No more hardware. I have to build "...
0
votes
0answers
16 views

Sequential write to zvol is much slower than to a dataset on the same zpool

While experimenting with Proxmox VE, we have encountered a strange performance problem: VM disks can be stored (among other options) as individual raw ZFS zvols, or as qcow2 files on a single common ...
0
votes
0answers
9 views

Samba share available space is smaller than zfs poll size

I have a FreeNas server with zfs pool. Configuration: 6 x 2TB disks in RAIDZ2. 15.5 TB raw space of disks. # zpool list -v NAME SIZE ALLOC FREE EXPANDSZ FRAG ...
2
votes
1answer
41 views

zfs checksum errors on Solaris 11 under KVM

Synopsis: libvirt 5.6.0, QEMU 4.1.1, Linux kernel 5.5.10-200, Fedora Server 31. Solaris 11.4 fresh install (with Solaris 10 branded zones), raw disk on XFS (unfortunately, no possibility to switch to ...
0
votes
0answers
18 views

Problems with Debian VM - import ZFS pool state: UNAVAILABLE

I had created RAIDZ1 pool in Proxmox. I had created Ubuntu VM and passed the controller with disks to it. After little while I wanted to try Debian. I had removed the controller from Ubuntu VM without ...
0
votes
1answer
67 views

PERC H740p single-disk RAID 0 versus JBOD/Pass-Through/eHBA/IT mode (For ZFS on Linux)

We have a server with PERC H740P mini (embedded) and a 2 disk RAID 1 with EXT4 for the OS (CentOS 7.8) and a 6 disk raidz2 ZFS on Linux setup for the data, all on the same controller. It's generally ...
0
votes
0answers
10 views

using different sized zfs-mirrors to keep pool expandable

I'm a fulltime Linux-Admin and want to get more into becoming more familar with zfs. For my homelab-setup I always followed the following strategy for storage: Generic Linux-box, ubuntu LTS or ...
0
votes
0answers
29 views

ZFS: 3 whole disks + partition vs 4 whole disks

While the title is ambiguous, I couldn't find an appropriate one. New to ZFS. I have 1 proxmox server at SoYouStart for testing purposes. The server has 4x2TB HDD (SoftRAID), and the partition table I ...
1
vote
1answer
35 views

Are ZFS snapshots really “free”?

I've heard many times that ZFS snapshots are "free", that because of ZFS' copy-on-write design snapshots do not consume any disk space unless data is changed, and only then the space usage ...
0
votes
0answers
14 views

Where did my bind mountpoint go? What is ZFS doing underneath with set mountpoint?

This is ZFS on Linux, under Proxmox 6.3-4. zfs.ko v.2.0.3-pve2 on kernel 5.4.101-1-pve #1 SMP PVE I create 3 filesystems, touch an identifying file in two, then set mountpoint of one into another, ...
1
vote
0answers
28 views

Why does this systemd service not run at the right time (loading encryption keys from a network drive which are required for lxc containers)?

In Debian with systemd, I use zfs and lxc. My zfs datasets are encrypted and their keys can be loaded from a network host via my /etc/zfs/zfs-load-key.sh script. My LXC containers are started by lxc....
2
votes
1answer
42 views

What would be the ideal solution to sync 2 offline systems?

we are in a special case where we have 2 Ubuntu offline servers in 2 DCs and should be kept offline when not used. When we need to use them, we power up one of them, do whatever we want physically via ...
0
votes
0answers
29 views

zfs mirror change block size without going offline

Got pretty old physical machine which is hard to put offline for long time or rebuild. It is under FreeBSD 9, and uses zfs to store data (including system). Don't know why, but it confured the way ...
3
votes
0answers
37 views

ZFS missing filesystem after interrupted backup

I have two filesystems in a pool, backup/nextcloud and backup/vm. Today, after a send/receive transfer was interrupted before it could finish (I was backing stuff up to these filesystems), I no longer ...

15 30 50 per page
1
2 3 4 5
85