Questions tagged [zfs]
An advanced file system that can span multiple disks, heal itself from data corruption, deduplicate data, encrypt, etc.
435 questions
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Trying to understand ZFS Backup strategy and related snapshot deletion?
I currently use a USB HDD for backing up my main zfs pool using snapshots. The main pool is "zfspool" the backup pool is "backup". The process for the backup is as follows:
# ...
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How to unlock an encrypted OpenZFS dataset on Debian user login?
I have a Debian system with Gnome and OpenZFS that I am trying to set up as an NAS for multiple users. I've created a pool, named rpool, and it has a global data set of the same name. For each user I ...
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ZFS options for ~/.cache
I'm on CachyOS, running KDE, and I'm using ZFS for the whole drive (except the small partition for /boot)
Now, I see that after using my system for several weeks, the ~/.cache gets really populated ...
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Is this the correct application of zpool-replace?
I currently have three 3TB hard drives in a RAIDZ-1 setup. I have two new 10TB hard drives that I would like to use instead. I still want the 10TB drives to be in a RAIDZ-1 configuration, so that I ...
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Rename Zpool device to use disk Model Number and Serial Number
I have a zpool with 6 identical drives, which "zpool status" shows as follows:
NAME STATE READ WRITE CKSUM
tank ONLINE ...
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Will ZFS send produce the same output every time?
I have some datasets in a zpool, and I want to back them up to cold S3 storage. Currently, I am using
zfs send -w -i @last_uploaded_snapshot my_pool/my_dataset@snapshot > file
and then uploading ...
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Why is it when I’m trying to install ZFS on Debian Trixie, I get a message that the release can’t be found?
I'm trying to install ZFS on a fresh install of Debian Trixie using these instructions.
Running sudo apt install -t stable-backports zfsutils-linux results in:
E: The value 'stable-backports' is ...
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Flattening the ZFS hierarchy on Ubuntu
I use the following script to flatten the ZFS hierarchy on Ubuntu from another non-zfs installation, so the pool names don't conflict:
#!/bin/bash
set -euo pipefail
zpool import -f rpool
cryptsetup ...
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Why is it that ZFS deduplication is off but it is apparently still working?
I was just trying to figure out deduplication in ZFS. So I created a file which was my "disk" for testing. I heave created two datasets - one with dedup turned on, the other one without ...
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Can I convert a RAID mirror into a RAID Z1 later on?
I currently own 2 drives, which are unassigned in TrueNAS. I want to add one more later, but I need to use that storage now.
Is there a way I can create a RAID mirror now and convert it to RAID Z1 ...
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How to clone a pool data to another pool without changing the app configs?
I have a TrueNAS pool being used for the apps I want to create a new pool with new hard drives but I don't want to change any app configs how do I clone it and if possible I want to change it from ...
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Expanding libvirt VM storage? (zfs volume as VM storage)
So I’m running a bunch of VM’s in a NixOS hypervisor. I am using libvirt (virsh) and using zfs volumes as the VM storage (using virtIO). I’ve just tried to expand one of the volumes on the hipervisor, ...
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What does it mean when zfs diff shows a path as both REMOVED (-) and ADDED (+)?
I am reviewing ZFS snapshots to determine if there is any data that I accidentally deleted, but I see a path is BOTH added and removed within the same diff. What does it mean for a path to be both ...
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Why won’t TrueNAS won't boot properly? The web admin is out as well
The system's seemingly shut down by itself or there was a power outage. When I powered it on, I got the following message on monitor, instead of the typical numbered menu:
Websocket client error: ...
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ZFS very slow write speed
I've set up ZFS on OpenSUSE Tumbleweed, on my T430 server using 8x SAS ST6000NM0034 6TB 7.2K RPM drives. The ZFS pool is setup as RAIDZ-2 and the dataset has encryption.
I'm getting very slow writes ...
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