Merge pull request #71947 from pagienge/patch-6

Update resize-os-disk-gpt-partition.md

Author: ktoliver

articles/virtual-machines/linux/resize-os-disk-gpt-partition.md

@@ -395,131 +395,123 @@ When the VM has restarted, complete these steps:
 > [!NOTE]
 > To use the same procedure to resize any other logical volume, change the LV name in step 12.
 
+
 ### RHEL RAW
->[!NOTE] 
->Always take a snapshot of the VM before increasing OS disk size.
 
 To increase the size of the OS disk in an RHEL RAW partition:
 
 1. Stop the VM.
 1. Increase the size of the OS disk from the portal.
 1. Start the VM.
 
-When the VM has restarted, perform the following steps:
+When the VM has restarted, complete these steps:
 
 1. Access your VM as a **root** user by using the following command:
- 
-   ```
-   sudo su
-   ```
 
-1. Install the **gptfdisk** package, which is required to increase the size of the OS disk.
-
-   ```
-   yum install gdisk -y
+   ```bash
+   [root@dd-rhel7vm ~]# sudo -i
    ```
 
-1.  To see all the  sectors available on the disk, run the following command:
-    ```
-    gdisk -l /dev/sda
-    ```
-
-1. You will see the details informing the partition type. Ensure it is GPT. Identify the root partition. Do not change or delete the boot partition (BIOS boot partition) and the system partition ('EFI System Partition')
-
-1. Use the following command to start the partitioning for the first time. 
-    ```
-    gdisk /dev/sda
-    ```
+1. When the VM has restarted, complete the following step:
 
-1. Now you will see a message asking for the next command ('Command: ? for help'). 
+   - Install the **cloud-utils-growpart** package to provide the **growpart** command, which is required to increase the size of the OS disk and the gdisk handler for GPT disk layouts. This package is preinstalled on most marketplace images.
 
-   ```
-   w
+   ```bash
+   [root@dd-rhel7vm ~]# yum install cloud-utils-growpart gdisk
    ```
 
-1. You will receive a warning stating "Warning! Secondary header is placed too early on the disk! Do you want to
-correct this problem? (Y/N):". You have to press 'Y'
+1. Use the **lsblk -f** command to verify the partition and filesystem type holding the root (**/**) partition:
 
-   ```
-   Y
+   ```bash
+   [root@vm-dd-cent7 ~]# lsblk -f
+   NAME    FSTYPE LABEL UUID                                 MOUNTPOINT
+   sda
+   ├─sda1  xfs          2a7bb59d-6a71-4841-a3c6-cba23413a5d2 /boot
+   ├─sda2  xfs          148be922-e3ec-43b5-8705-69786b522b05 /
+   ├─sda14
+   └─sda15 vfat         788D-DC65                            /boot/efi
+   sdb
+   └─sdb1  ext4         923f51ff-acbd-4b91-b01b-c56140920098 /mnt/resource
    ```
 
-1. You should see a message informing that final checks are complete and asking for confirmation. Press 'Y'
+1. For verification, start by listing the partition table of the sda disk with **gdisk**. In this example, we see a 48-GB disk with partition 2 at 29.0 GiB. The disk was expanded from 30 GB to 48 GB in the Azure portal.
 
-   ```
-   Y
-   ```
-
-1. Check if everything happened correctly using partprobe command
+   ```bash
+   [root@vm-dd-cent7 ~]# gdisk -l /dev/sda
+   GPT fdisk (gdisk) version 0.8.10
 
-   ```
-   partprobe
-   ```
+   Partition table scan:
+   MBR: protective
+   BSD: not present
+   APM: not present
+   GPT: present
 
-1. The above steps have ensured that the secondary GPT header is placed at the end. The next step is to start the process of resizing by using the gdisk tool again. Use the following command.
+   Found valid GPT with protective MBR; using GPT.
+   Disk /dev/sda: 100663296 sectors, 48.0 GiB
+   Logical sector size: 512 bytes
+   Disk identifier (GUID): 78CDF84D-9C8E-4B9F-8978-8C496A1BEC83
+   Partition table holds up to 128 entries
+   First usable sector is 34, last usable sector is 62914526
+   Partitions will be aligned on 2048-sector boundaries
+   Total free space is 6076 sectors (3.0 MiB)
 
+   Number  Start (sector)    End (sector)  Size       Code  Name
+      1         1026048         2050047   500.0 MiB   0700
+      2         2050048        62912511   29.0 GiB    0700
+   14            2048           10239   4.0 MiB     EF02
+   15           10240         1024000   495.0 MiB   EF00  EFI System Partition
    ```
-   gdisk /dev/sda
-   ```
-1. In the command menu, press 'p' to see list of partition. Identify the root partition (In the steps, sda2 is considered as the root partition) and the boot partition (In the steps, sda3 is considered as the boot partition) 
 
-   ```
-   p
-   ```
-    ![Root Partition and Boot Partition](./media/resize-os-disk-rhelraw/resize-os-disk-rhelraw1.png)
+1. Expand the partition for root, in this case sda2 by using the **growpart** command. Using this command expands the partition to use all of the contiguous space on the disk.
 
-1. Press 'd' to delete the partition and select the partition number assigned to boot (in this example it is '3')
-   ```
-   d
-   3
-   ```
-1. Press 'd' to delete the partition and select the partition number assigned to boot (in this example it is '2')
-   ```
-   d
-   2
+   ```bash
+   [root@vm-dd-cent7 ~]# growpart /dev/sda 2
+   CHANGED: partition=2 start=2050048 old: size=60862464 end=62912512 new: size=98613214 end=100663262
    ```
-    ![Delete Root Partition and Boot Partition](./media/resize-os-disk-rhelraw/resize-os-disk-rhelraw2.png)
 
-1. To recreate root partition with increased size, Press 'n', enter the partition number you deleted previously for root('2' for this example) and choose the First Sector as 'Default Value', Last Sector as 'Last sector value -  boot size sector' ('4096 in this case' corresponding to 2MB boot) and Hex Code as '8300'
-   ```
-   n
-   2
-   (Enter default)
-   (Calculateed value of Last sector value - 4096)
-   8300
-   ```
-1. To recreate boot partition, Press 'n', enter the partition number you deleted previously for boot('3' for this example) and choose the First Sector as 'Default Value', Last Sector as 'Default value'  and Hex Code as 'EF02'
-   ```
-   n
-   3
-   (Enter default)
-   (Enter default)
-   EF02
-   ```
+1. Now print the new partition table with **gdisk** again.  Notice that partition 2 has expanded to 47.0 GiB:
 
-1. Write the changes with the 'w' command and press 'Y' to confirm
-   ```
-   w
-   Y
-   ```
-1. Run command 'partprobe' to check for disk stability
-   ```
-   partprobe
-   ```
-1. Reboot the VM and the root partition size would have been increased
-   ```
-   reboot
-   ```
+   ```bash
+   [root@vm-dd-cent7 ~]# gdisk -l /dev/sda
+   GPT fdisk (gdisk) version 0.8.10
 
-   ![New Root Partition and Boot Partition](./media/resize-os-disk-rhelraw/resize-os-disk-rhelraw3.png)
+   Partition table scan:
+   MBR: protective
+   BSD: not present
+   APM: not present
+   GPT: present
 
-1. Run the xfs_growfs command on the partition to resize it
-   ```
-   xfs_growfs /dev/sda2
+   Found valid GPT with protective MBR; using GPT.
+   Disk /dev/sda: 100663296 sectors, 48.0 GiB
+   Logical sector size: 512 bytes
+   Disk identifier (GUID): 78CDF84D-9C8E-4B9F-8978-8C496A1BEC83
+   Partition table holds up to 128 entries
+   First usable sector is 34, last usable sector is 100663262
+   Partitions will be aligned on 2048-sector boundaries
+   Total free space is 4062 sectors (2.0 MiB)
+
+   Number  Start (sector)    End (sector)  Size       Code  Name
+      1         1026048         2050047   500.0 MiB   0700
+      2         2050048       100663261   47.0 GiB    0700
+   14            2048           10239   4.0 MiB     EF02
+   15           10240         1024000   495.0 MiB   EF00  EFI System Partition
    ```
 
-   ![XFS Grow FS](./media/resize-os-disk-rhelraw/resize-os-disk-rhelraw4.png)
+1. Expand the filesystem on the partition with **xfs_growfs**, which is appropriate for a standard marketplace-generated RedHat system:
 
+   ```bash
+   [root@vm-dd-cent7 ~]# xfs_growfs /
+   meta-data=/dev/sda2              isize=512    agcount=4, agsize=1901952 blks
+            =                       sectsz=4096  attr=2, projid32bit=1
+            =                       crc=1        finobt=0 spinodes=0
+   data     =                       bsize=4096   blocks=7607808, imaxpct=25
+            =                       sunit=0      swidth=0 blks
+   naming   =version 2              bsize=4096   ascii-ci=0 ftype=1
+   log      =internal               bsize=4096   blocks=3714, version=2
+            =                       sectsz=4096  sunit=1 blks, lazy-count=1
+   realtime =none                   extsz=4096   blocks=0, rtextents=0
+   data blocks changed from 7607808 to 12326651
+   ```
 
 1. Verify the new size is reflected by using the **df** command: