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Alireza Goftari
Alireza Goftari
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I have a VMware ESXi virtual machine running Ubuntu 18.04 with LVM configured partitions. I was trying to extend one of the logical volumes mount as / but mistakenly and foolishly deleted the LVM partition using cfdisk (the partition was formatted as ext4). Here is what I did which caused the problem:

Increased the VM disk size in vSphere ESXi Performed a rescan on SCSI device to make it recognize the disk resize without reboot Confirmed the new disk disk using fdisk -l Foolishly deleting the LVM partition (sda2) using cfdisk and recreating it with the new size (actually don't remember whether I changed the new partition type to LVM or not) Tried to increase the PV size using pvresize /dev/sda2 Tried running partprobe to check why the PV was not resized where I got a message indicating that partition where in use by system Performed a reboot and the OS did not boot as it was not able to mount the partitions This is where the issue began. What I tried: I did boot the system using GParted bootable disk, restored the LVM partitions using pvcreate with the same UUID and vgcfgrestore (I recovered the old lvm backups using testdisk tool) with no success as the volume containing root partition was not mountable (unknown filesystem) I tried running testdisk to recover important directories and files, but some restored files (I did check some text files, e.g. config and php files) have scrambled contents.

  1. Increased the VM disk size in vSphere ESXi
  2. Performed a rescan on SCSI device to make it recognize the disk resize without reboot
  3. Confirmed the new disk disk using fdisk -l
  4. Foolishly deleting the LVM partition (sda2) using cfdisk and recreating it with the new size (actually don't remember whether I changed the new partition type to LVM or not)
  5. Tried to increase the PV size using pvresize /dev/sda2 Tried running partprobe to check why the PV was not resized where I got a message indicating that partition where in use by system
  6. Performed a reboot and the OS did not boot as it was not able to mount the partitions This is where the issue began. What I tried:
  7. I did boot the system using GParted bootable disk, restored the LVM partitions using pvcreate with the same UUID and vgcfgrestore (I recovered the old lvm backups using testdisk tool) with no success as the volume containing root partition was not mountable (unknown filesystem)
  8. I tried running testdisk to recover important directories and files, but some restored files (I did check some text files, e.g. config and php files) have scrambled contents.

I have a VMware ESXi virtual machine running Ubuntu 18.04 with LVM configured partitions. I was trying to extend one of the logical volumes mount as / but mistakenly and foolishly deleted the LVM partition using cfdisk (the partition was formatted as ext4). Here is what I did which caused the problem:

Increased the VM disk size in vSphere ESXi Performed a rescan on SCSI device to make it recognize the disk resize without reboot Confirmed the new disk disk using fdisk -l Foolishly deleting the LVM partition (sda2) using cfdisk and recreating it with the new size (actually don't remember whether I changed the new partition type to LVM or not) Tried to increase the PV size using pvresize /dev/sda2 Tried running partprobe to check why the PV was not resized where I got a message indicating that partition where in use by system Performed a reboot and the OS did not boot as it was not able to mount the partitions This is where the issue began. What I tried: I did boot the system using GParted bootable disk, restored the LVM partitions using pvcreate with the same UUID and vgcfgrestore (I recovered the old lvm backups using testdisk tool) with no success as the volume containing root partition was not mountable (unknown filesystem) I tried running testdisk to recover important directories and files, but some restored files (I did check some text files, e.g. config and php files) have scrambled contents.

I have a VMware ESXi virtual machine running Ubuntu 18.04 with LVM configured partitions. I was trying to extend one of the logical volumes mount as / but mistakenly and foolishly deleted the LVM partition using cfdisk (the partition was formatted as ext4). Here is what I did which caused the problem:

  1. Increased the VM disk size in vSphere ESXi
  2. Performed a rescan on SCSI device to make it recognize the disk resize without reboot
  3. Confirmed the new disk disk using fdisk -l
  4. Foolishly deleting the LVM partition (sda2) using cfdisk and recreating it with the new size (actually don't remember whether I changed the new partition type to LVM or not)
  5. Tried to increase the PV size using pvresize /dev/sda2 Tried running partprobe to check why the PV was not resized where I got a message indicating that partition where in use by system
  6. Performed a reboot and the OS did not boot as it was not able to mount the partitions This is where the issue began. What I tried:
  7. I did boot the system using GParted bootable disk, restored the LVM partitions using pvcreate with the same UUID and vgcfgrestore (I recovered the old lvm backups using testdisk tool) with no success as the volume containing root partition was not mountable (unknown filesystem)
  8. I tried running testdisk to recover important directories and files, but some restored files (I did check some text files, e.g. config and php files) have scrambled contents.
Source Link
Alireza Goftari
Alireza Goftari
  • 1
  • 2

Need help recovering ext4 LVM partition

I have a VMware ESXi virtual machine running Ubuntu 18.04 with LVM configured partitions. I was trying to extend one of the logical volumes mount as / but mistakenly and foolishly deleted the LVM partition using cfdisk (the partition was formatted as ext4). Here is what I did which caused the problem:

Increased the VM disk size in vSphere ESXi Performed a rescan on SCSI device to make it recognize the disk resize without reboot Confirmed the new disk disk using fdisk -l Foolishly deleting the LVM partition (sda2) using cfdisk and recreating it with the new size (actually don't remember whether I changed the new partition type to LVM or not) Tried to increase the PV size using pvresize /dev/sda2 Tried running partprobe to check why the PV was not resized where I got a message indicating that partition where in use by system Performed a reboot and the OS did not boot as it was not able to mount the partitions This is where the issue began. What I tried: I did boot the system using GParted bootable disk, restored the LVM partitions using pvcreate with the same UUID and vgcfgrestore (I recovered the old lvm backups using testdisk tool) with no success as the volume containing root partition was not mountable (unknown filesystem) I tried running testdisk to recover important directories and files, but some restored files (I did check some text files, e.g. config and php files) have scrambled contents.