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mdadm + LVM + VDO + XFS
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| ## mdadm (RAID5) | |
| mdadm --create --verbose /dev/md0 --chunk=256 --level=5 --raid-devices=4 /dev/sdX /dev/sdX /dev/sdX /dev/sdX | |
| mdadm --detail --scan >> /etc/mdadm.conf | |
| ## LVM (w/ VDO) | |
| pvcreate /dev/md0 | |
| vgcreate MyVG /dev/md0 | |
| lvcreate --vdo --vdosettings 'vdo_slab_size_mb=2048' -l 100%FREE -n MyLV MyVG | |
| ## Format md0(/dev/MyVG/MyLV, w/ XFS) | |
| # mkfs.xfs -K /dev/vg-name/vdo-name (in RHEL 9 Guide) | |
| # https://docs.redhat.com/ko/documentation/red_hat_enterprise_linux/9/html/deduplicating_and_compressing_logical_volumes_on_rhel/creating-and-mounting-an-lvm-vdo-volume_creating-a-deduplicated-and-compressed-logical-volume | |
| mkfs.xfs -K /dev/MyVG/MyLV |
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