'/dev/mapper/MyStorage-rootvol'のArch Linuxルートデバイスの問題

Arch x86_64をインストールしましたが、これらインストール中に使用したコマンドは次のとおりです。

# parted /dev/sda
(parted) mklabel msdos
(parted) mkpart primary ext2 2MiB 2GiB
(parted) mkpart primary ext4 2GiB 100%
(parted) set 1 boot on
(parted) q

# mkfs.ext2 /dev/sda1
# cryptsetup --key-size 512 --hash sha512 --iter-time 5000 --use-random luksFormat /dev/sda2

# cryptsetup open --type luks /dev/sda2 r00t

# pvcreate /dev/mapper/lvm
# vgcreate MyStorage /dev/mapper/r00t

# lvcreate -L 2GiB MyStorage -n swapvol
# lvcreate -L 3GiB MyStorage -n tmpvol
# lvcreate -L 30GiB MyStorage -n rootvol
# lvcreate -l +100%FREE MyStorage -n homevol

# mkswap /dev/mapper/MyStorage-swapvol
# mkfs.ext4 /dev/mapper/MyStorage-homevol
# mkfs.ext4 /dev/mapper/MyStorage-rootvol
# mkfs.ext4 /dev/mapper/MyStorage-tmpvol

# mount /dev/MyStorage/rootvol /mnt
# mkdir /mnt/home
# mount /dev/MyStorage/homevol /mnt/home
# mkdir /mnt/tmp
# mount /dev/MyStorage/tmpvol /mnt/tmp
# swapon /dev/MyStorage/swapvol

# mkdir /mnt/boot
# mount /dev/sda1 /mnt/boot

# nano mkinitcpio.conf
added "encrypt lvm2" to /etc/mkinitcpio.conf hooks: HOOKS="base udev autodetect modconf block encrypt lvm2 filesystems keyboard fsck"

# nano /etc/resolv.conf
replaced DNS with 8.8.8.8

# pacstrap /mnt base base-devel

# genfstab -U -p /mnt >> /mnt/etc/fstab

# arch-chroot /mnt /bin/bash

uncommened e_us.UTF-8 UTF-8 in /etc/locale.gen
# locale-gen
# echo LANG=en_US.UTF-8 > /etc/locale.conf
# export LANG=en_US.UTF-8

# ln -sf /usr/share/zoneinfo/Europe/Sofia /etc/localtime

# hwclock --systohc --utc

# echo myhstnm > /etc/hostname
added "myhstnm" to /etc/hosts

# systemctl enable [email protected]

# nano mkinitcpio.conf
added "encrypt lvm2" to /etc/mkinitcpio.conf hooks: HOOKS="base udev autodetect modconf block encrypt lvm2 filesystems keyboard fsck"
# mkinitcpio -p linux

# pacman -S networkmanager
# systemctl enable NetworkManager.service

# passwd

# pacman -S grub os-prober

# grub-install --recheck /dev/sda
# grub-mkconfig -o /boot/grub/grub.cfg
    Generating grub configuration file ...
    /run/lvm/lvmetad.socket: connect failed: No such file or directory
    WARNING: Failed to connect to lvmetad. Falling back to internal scanning.
# nano /etc/lvm/lvm.conf
changed "use_lvmetad = 1" to "use_lvmetad= 0"
# grub-mkconfig -o /boot/grub/grub.cfg

# exit

# reboot


same errors as before


# cryptsetup open --type luks /dev/sda2 r00t

# mount /dev/MyStorage/rootvol /mnt
# mount /dev/MyStorage/homevol /mnt/home
# mount /dev/MyStorage/tmpvol /mnt/tmp
# swapon /dev/MyStorage/swapvol
# mount /dev/sda1 /mnt/boot

# nano mkinitcpio.conf
added "encrypt lvm2" to /etc/mkinitcpio.conf hooks: HOOKS="base udev autodetect modconf block encrypt lvm2 filesystems keyboard fsck"

# nano /etc/resolv.conf
replaced DNS with 8.8.8.8

# arch-chroot /mnt /bin/bash

# nano /etc/default/grub
changed: GRUB_CMDLINE_LINUX="cryptdevice=UUID=11c8d724-7ae8-4ca3-a1e8-658d6aaee6ab:MyStorage root=/dev/mapper/MyStorage-rootvol"

# grub-mkconfig -o /boot/grub/grub.cfg

# mkinitcpio -p linux

# grub-mkconfig -o /boot/grub/grub.cfg

暗号化されていないMBRを使用します。/開始するLUKSには、それぞれswap、tmp、home、およびrootに使用される4つのLVがあります。

ログに示すように、/etc/default/grubを変更しようとしましたが、成功しませんでした。

私が見るエラーは次のとおりです。

[    15.032148] blk_update_request: I/O error, dev fd0, sector 0
[    27.239028] blk_update_request: I/O error, dev fd0, sector 0
ERROR: device '/dev/mapper/MyStorage-rootvol' not found. Skipping fsck.
ERROR: Unable to find root device '/dev/mapper/MyStorage-rootvol'.
You are being dropped to a recovery shell
Type 'exit' to try and continue booting.
can't access tty; job control turned off

「exit」と入力すると、次のような結果が表示されます。

mount: you must specify the filesystem type
You are being dropped to a recovery shell
can't access tty; job control turned off

今回は3番目にArchをインストールしようとしていますが、どうすればいいかわかりません。