Welcome to the channel.
This will be a mini setup guide on how to get XCP-NG Setup with ZFS Storage pools and how to manage them.
This video is also suitable for most if not all linux distributions as well.
https://beyondcloud.technology/en/category/xcp-ng/article/xcp-ng-zfs-setup
My Recommendation: sudo yum install zfs --enablerepo=epel,base,updates
Official/Production: sudo yum install zfs
Run instead of system restart: sudo modprobe zfs
Check ZFS Version: zfs version
lsblk or fdisk -l or lsblk -o NAME,SIZE,VENDOR,MODEL
SAS (MY EXAMPLE)
/dev/sdo
/dev/sdm
/dev/sdk
/dev/sdq
/dev/sdn
/dev/sdl
/dev/sdr
/dev/sdp
sudo zpool create -f mysaspool raidz2 /dev/sdo /dev/sdm /dev/sdk /dev/sdq raidz2 /dev/sdn /dev/sdl /dev/sdr /dev/sdp
NOTE:this one will only lose 2x2 (=4) disks for redundancy
or
zpool create -f mysaspool raidz2 /dev/sdo /dev/sdm /dev/sdk /dev/sdq /dev/sdn /dev/sdl /dev/sdr /dev/sdp
NOTE:this one will only lose 2 disks for redundancy
sudo zpool status mysaspool
sudo zfs create mysaspool/mysasdataset
sudo zfs set compression=lz4 mysaspool/mysasdataset
zfs destroy mysaspool/mysaspool
sudo zfs list
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ZFS POOL SSD/NVME ARC CACHE DRIVE:
zpool status
sudo zpool add mysaspool cache /dev/nvme1n1
zpool status
CHECK PERFORMANCE: arcstat -a
ARC Summary: arc_summary
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Destroy Pool:
sudo zpool destroy mynvmepool
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Import ZFS Pool:
zpool import myssdpool
Or if pool was destroyed
zpool import -D
zpool import -D myssdpool
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Repair ZFS Pool:
zpool offline myssdpool sdl
lsblk
zpool replace myssdpool /dev/sdl /dev/sdp
If not empty use below command to wipe (warning all the data on that disk will be permanently removed)
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WIPE DISK (WARNING)
fdisk -l
sudo wipefs -a /dev/sdp