#Debian openzfs how to
#Debian openzfs install
#Debian openzfs Patch
#Debian openzfs software
#Debian openzfs code

This tutorial is far from complete, one shouldn't mount and use the complete pool as such. Make sure you're deleting the right pool and don't have any data inside that you care about. Note: This will wipe out the pool and lead to data loss. If you no longer like swimming in the waters of ZFS, you can destroy the pool you created with: $ sudo zpool destroy zfspool Verify the pool is set up correctly: $ zfs listĪnd make sure it was mounted so Linux can see it: $ df -h The specific structure you should use depends on how many and what type of drives you have, as well as your performance and redundancy needs.

#Debian openzfs how to

The following command will create a zpool with all the block devices listed: $ sudo zpool create zfspool raidz1 sda sdb sdc sdd sde -fįor production use, you should really read up on the benefits and drawbacks of different RAID levels in ZFS, and how to structure zpools and vdevs. Looking good, time to start building the array! Create a RAIDZ1 zpool It doesn't zero the data, so technically it could still be recovered at this point!Ĭheck to make sure nothing's mounted (and make sure you have removed any of the drives you'll use in the array from /etc/fstab if you had persistent mounts for them in there!): $ lsblk If you didn't realize it yet, this wipes everything. $ sudo umount /dev/sdb? sudo wipefs -all -force /dev/sdb? sudo wipefs -all -force /dev/sdbĭo that for each of the drives. We should make sure all the drives that will be part of the array are partition-free: $ sudo umount /dev/sda? sudo wipefs -all -force /dev/sda? sudo wipefs -all -force /dev/sda I noticed sda already has a partition and a mount. I want to put sda through sde into the RAIDZ1 volume. List all the devices on your system: $ lsblk And make sure you don't care about anything on them. You should have at least three drives set up and ready to go. If not, it might not have loaded correctly. ZFS: Loaded module v2.0.2-1~bpo10+1, ZFS pool version 5000, ZFS filesystem version 5

#Debian openzfs install

$ sudo apt install zfs-dkms zfsutils-linux

#Debian openzfs software

Since ZFS is not bundled with other Debian 'free' software (because of licensing issues), you need to install the kernel headers, then install two ZFS packages: $ sudo apt install raspberrypi-kernel-headers No guarantees under other configurations. I have also only tested ZFS on 64-bit Raspberry Pi OS, on Compute Modules with 4 or 8 GB of RAM. I wouldn't really recommend ZFS for the Pi 4 model B or other Pi models that can't use native SATA, NVMe, or SAS drives.įor my own testing, I am using a Raspberry Pi Compute Module 4, and there are a variety of PCI Express storage controller cards and carrier boards with integrated storage controllers that make ZFS much happier. ZFS does not enjoy USB drives, though it can work on them. In it, I'm going to document how I set up a ZFS zpool in RAIDZ1 in Linux on a Raspberry Pi. OpenZFS 2.1-rc6 for Linux and FreeBSD systems is available for testing from GitHub.This is a simple guide, part of a series I'll call 'How-To Guide Without Ads'. OpenZFS 2.1-rc6 also has early compatibility work for the Linux 5.13 Git kernel (though officially tops out at 5.12 for the moment), various FreeBSD fixes, man page improvements, and a variety of other fixes. More details on this late change for OpenZFS 2.1-rc6 via this recent merge request. Testing also found this scaling to really help with latency and interactivity when deleting files with deduplication enabled. The change during testing led to the 95% latency dropping from 77ms to 5ms and the maximum latency going from 204 ms to 7.5 ms. This scaling with today's higher core count systems should really help with lower latency. Both number of threads and threads per taskq are now tunable in case somebody really wants to use all of system power for ZFS.'

#Debian openzfs code

The code is made to create new taskq for ~6 worker threads (less for small systems, but more for very large) up to 80% of CPU cores (previous 75% was not good for rounding down).

#Debian openzfs Patch

As for the change, ' this patch introduces ZTI_SCALE macro, alike to ZTI_BATCH, but with multiple taskqs, depending on number of CPUs, to be used in places where lock scalability is needed, while request ordering is not so much. OpenZFS 2.1 is headlined by adding Distributed Spare RAID 'dRAID' and a new compatibility property for Zpool feature-sets, compatibility with newer versions of the Linux kernel (through 5.12 at the moment), and a variety of other improvements and fixes.Ī notable new change to find with OpenZFS 2.1-rc6 is scaling the worker threads and Taskqs with the number of CPUs on the system. Yet another release candidate of OpenZFS 2.1 is now available for testing and this time around there are some interesting changes to note.