Home lab data
The following table is the result of the command:
tar --xattrs --acls -cf - -C /mnt/data1 . | mbuffer -m 1G -P 80 | pv -s 3597517937334 | tar --xattrs --acls -xpf - -C /mnt/data1_new
which basically copied from BTRFS file system on /mnt/data1 to XFS file system on /mnt/data1_new. Notice 1 TB drive utilization difference.
Filesystem Size Used Avail Use% Mounted on /dev/mapper/data1vg-data1 7.3T 3.5T 3.9T 47% /mnt/data1_new /dev/dm-13 7.3T 3.2T 2.1T 61% /mnt/data1
Somthing to think about in favour of XFS and yet another issue with BTRFS.
XFS was built with
mkfs.xfs -L data1 -l size=128m -i size=512 -f /dev/data1vg/data1
The original BTRFS has no subvolumes or snapshots:
sudo btrfs subvolume list -a /mnt/data1 ID 257 gen 491630 top level 5 path <FS_TREE>/@data
sudo btrfs filesystem usage /mnt/data1 WARNING: failed to get device size for <missing disk>: No such file or directory Overall: Device size: 14.55TiB Device allocated: 6.43TiB Device unallocated: 8.12TiB Device missing: 7.28TiB Device slack: 3.50KiB Used: 6.38TiB Free (estimated): 4.08TiB (min: 4.08TiB) Free (statfs, df): 2.05TiB Data ratio: 2.00 Metadata ratio: 2.00 Global reserve: 512.00MiB (used: 0.00B) Multiple profiles: no Data,RAID1: Size:3.21TiB, Used:3.18TiB (99.35%) /dev/dm-13 3.21TiB <missing disk> 3.21TiB Metadata,RAID1: Size:9.00GiB, Used:4.53GiB (50.29%) /dev/dm-13 9.00GiB <missing disk> 9.00GiB System,RAID1: Size:32.00MiB, Used:512.00KiB (1.56%) /dev/dm-13 32.00MiB <missing disk> 32.00MiB Unallocated: /dev/dm-13 4.06TiB <missing disk> 4.06TiB
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Direct Disk Encryption
device=/dev/sdc cryptsetup luksFormat --type luks2 --align-payload=4096 -s 256 -c aes-xts-plain64 --label cdata1_backup $device cryptsetup open /dev/by-label/cdata1_backup cdata1_backup mkfs.btrfs --label data1_backup /dev/mapper/cdata1_backup mount /dev/disk/by-label/data1_backup /mnt/backup/data1_backup btrfs subvolume create /mnt/backup/data1_backup/@data1backup umount /mnt/backup/data1_backup cryptsetup luksDump /dev/disk/by-label/cdata1_backup cryptsetup luksAddKey /dev/disk/by-label/cdata1_backup /etc/vault/disk-key nvim /etc/crypttab cdata1_backup /dev/disk/by-label/cdata1_backup /etc/vault/disk-key nvim /etc/fstab # /dev/mapper/cdata1_backup UUID=30d29047-09b0-49f5-9d61-d7a6f3033d5e LABEL=data1_backup / btrfs rw,relatime,space_cache=v2,subvolid=5,subvol=/ 0 0
Other
device=/dev/nvme0n1
partition=/dev/nvme0n1p3 or /dev/disk/by-partlabel/csys0 fdisk -l $device cryptsetup luksFormat --type luks2 --align-payload=512 -s 256 -c aes-xts-plain64 --label sys0parent $partition
cryptsetup open /dev/disk/by-partlabel/csys0 sys0 mkfs.btrfs --label arch0 /dev/mapper/sys0 mount LABEL=arch0 /mnt btrfs subvolume create /mnt/@arch btrfs subvolume create /mnt/@snapshots umount -R /mnt mount -o defaults,x-mount.mkdir,compress=zstd,ssd,noatime,subvol=@arch LABEL=arch0 /mnt mount LABEL=EFI /mnt/boot arch-chroot /mnt pacstrap -K /mnt base linux linux-firmware amd-ucode neovim networkmanager linux-firmware-qlogic btrfs-progs
Follow installation guide until `mkinitcpio` section.
create file: `/etc/mkinitcpio.conf.d/arch.conf` with content:
cat /etc/mkinitcpio.conf MODULES=(btrfs) BINARIES=(/usr/bin/btrfs) FILES=() HOOKS=(base udev autodetect keyboard keymap modconf block encrypt filesystems fsck)
mkinitcpio -p linux
cat /boot/loader/entries/arch. title Arch Linux (encrypted btrfs) linux /vmlinux-linux initrd /amd-ucode.img initrd /intramfs-linux.img options cryptdevice=PARTLABEL=csystem:system root=/dev/mapper/system rw rootflags=subvol=@root,rw rootfstype=btrfs
Other options: cryptkey=/dev/dsdf1:50500:200 - option does not work cryptkey=PARTLABEL=seckey:auto:/sec.keyf - option does not work rd.log=all
Copy data from filesystem file:
dd skip=50500 bs=200 count=1 if=/dev/sdf1 of=/root/keyslot1
btrfs from single drive to two in raid 1 mode:
btrfs filesystem show /mnt/data btrfs device add /dev/mapper/data2 /mnt/data btrfs filesystem show /mnt/data btrfs balance start -dconvert=raid1 -mconvert=raid1 /mnt/data
References:
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