disk-resize

resize disks sda, nvme0

check partitions

fdisk -l

another:

lsblk
df -h

resize

lvresize(8): resize logical volume - Linux man page

Change or set the logical volume size in units of logical extents. With the + or - sign the value is added to or subtracted from the actual size of the logical volume and without it, the value is taken as an absolute one.

-l, --extents [+|-]LogicalExtentsNumber[%{VG|LV|PVS|FREE|ORIGIN}]

Change or set the logical volume size in units of megabytes. A size suffix of M for megabytes, G for gigabytes, With the + or - sign the value is added or subtracted from the actual size of the logical volume and rounded to the full extent size and without it, the value is taken as an absolute one.

-L, --size [+|-]LogicalVolumeSize[bBsSkKmMgGtTpPeE]

ROOT

lvresize -L -5G /dev/pve/root
resize2fs /dev/mapper/pve-root

LVM DATA

vgdisplay: attribs of volume groups - Linux man page display attributes of volume groups
```
vgdisplay
```

resize2fs - Linux man page -f Forces resize2fs to proceed with the filesystem resize operation, overriding some safety checks which resize2fs normally enforces.

lvresize -l +100%FREE /dev/pve/data
resize2fs /dev/mapper/
resize2fs /dev/mapper/pve-root

e2fsck -fy /dev/nvme0n1p3 
resize2fs -f /dev/nvme0n1p3

lvresize -L -5G /dev/pve/root
resize2fs /dev/mapper/pve-root

LVM DATA INFO

To see the more detail of our VG

vgdisplay -v

lvdisplay

lvdisplay: attribs of logical volume - Linux man page Details of Volume Groups
```
lvdisplay
```

resizing data to 650G and give the rest to pve/root

Remove pve-data logical volume.

lvremove /dev/pve/data -y

Create it again with a new size.

lvcreate -L 650G -n data pve -T

Give pve-root all the other size.

lvresize -l +100%FREE /dev/pve/root

Resize pve-root file system

resize2fs /dev/mapper/pve-root

Check disk space before

df -h

Delete local-lvm storage in gui

lvremove /dev/pve/data
lvresize -l +100%FREE /dev/pve/root
resize2fs /dev/mapper/pve-root

Check disk space after

df -h

reduce /dev/pve/data to 10GB, the following will work without any problem:

umount /var/lib/vz
e2fsck -f /dev/pve/data
resize2fs /dev/pve/data 10G
lvreduce -L 10G /dev/pve/data
resize2fs /dev/pve/data
mount /dev/pve/data

resize max /dev/mapper/pve-root

du -sh /*
lvextend --extents +100%FREE /dev/mapper/pve-root
resize2fs -p /dev/mapper/pve-root

another

lvresize -L +195G /dev/pve/root
# Resize pve-root file system
resize2fs /dev/mapper/pve-root

lvm vgchange -a y
e2fsck -f /dev/mapper/pve-root
resize2fs -f /dev/mapper/pve-root 195G

Openwrt

Parted

8 Linux ‘Parted’ Commands to Create, Resize and Rescue Disk Partitions

[HOWTO] Resizing root partition on x86 - Installing and Using OpenWrt - OpenWrt Forum

BOOT="$(sed -n -e "/\s\/boot\s.*$/{s///p;q}" /etc/mtab)"
DISK="${BOOT%%[0-9]*}"
PART="$((${BOOT##*[^0-9]}+1))"
ROOT="${DISK}${PART}"
LOOP="$(losetup -f)"
losetup ${LOOP} ${ROOT}
fsck.ext4 -y -f ${LOOP}
resize2fs ${LOOP}
reboot

script: resize.sh

#!/bin/sh
echo -n "$(sed -n -e "/\s\/boot\s.*$/{s///p;q}" /etc/mtab)" > bootdisk.txt
BOOT=$(cat bootdisk.txt)
echo $BOOT

DISK=${BOOT%%[0-9]*}
PART=$((${BOOT##*[^0-9]}+1))
echo -n "${DISK}" > rootdisk.txt
echo -n "${PART}" >> rootdisk.txt
ROOT=$(cat rootdisk.txt)
echo $ROOT

LOOP=$(losetup -f)
echo ${LOOP} ${ROOT}

losetup ${LOOP} ${ROOT}
fsck.ext4 -y -f ${LOOP}
resize2fs ${LOOP}
reboot

GRUB problem

error: disk `lvmid/8svGLw-BMJO-oHsj-gpkr-iax1-Yy7c-tPb0av/X6aAE9-IkU4-Rdzo-0fJ0-Xy99-Btwq-xSmzDe’ not found.

Recover From Grub Failure - Proxmox VE
[Super Grub2 Disk download SourceForge.net](https://sourceforge.net/projects/supergrub2/)
Super Grub2 Disk Use Super-Grub2 to boot:
boot from a Super_grub_disk2 rescue iso -> https://www.supergrubdisk.org/
An orange colored menu appears
Select: “Enable GRUB2’s RAID and LVM support” [ENTER]
Press ESC when finished to go back to the main menu
Select: “Boot manually” [ENTER]
Select: “Operating Systems” [ENTER]
Scroll down to the second last option: “Linux /boot/vmlinuz-5.xx.xx-x-pve (lvm/pve-root)” [ENTER]
Your system will reboot and boots into Proxmox VE as before.
Inside Proxmox VE shell: update-grub to repair GRUB2

the last step (update-grub) threw errors after booting about disks not found

lvextend -L +1G /dev/pve/root
lvreduce -L -1G /dev/pve/root

Proxmox VE shell:

update-grub

Stuck at grub rescue after an update and reboot. Any tips before I reinstall? : r/Proxmox

After several tests I no longer get the error. Now I need to start the normal grub menu.

open systemrescuecd usb :

e2fsck -ff /dev/pve/root resize2fs /dev/pve/root 95G # size 96G - 1G lvreduce -L -1G /dev/pve/root

modprobe efivarfs mount /dev/mapper/pve-root /mnt mount -t proc proc /mnt/proc mount -t sysfs sys /mnt/sys mount -o bind /dev /mnt/dev mount -t devpts pts /mnt/dev/pts/ chroot /mnt

run inside the chroot:

mount /dev/sda2 /boot/efi mount -t efivarfs efivarfs /sys/firmware/efi/efivars

update-grub grub-install /dev/sda

Proxmox GRUB lvmid not found. – HITOHA.もえ

So, my EFI Partition for NVME Disk plugged on M.2_1 on the motherboard would be:
/dev/nvme0n1p2
Then I do this:
mount /dev/nvme0n1p2 /boot/efi
For UEFI user, do this, it will update your motherboard boot entry:
mount -t efivarfs /efivarfs /sys/firmware/efi/efivars
Then, run update GRUB:
update-grub
Install GRUB to Boot/EFI Partition:
grub-install /dev/nvme0n1p2
Exit chroot then reboot!