"The log partition size on this vCenter Server is smaller than the recommended 50 GB", increase the disk space of /storage/log to 50GB on vCenter 8.0

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VMware vCenter Server

vCenter 8.x (up to versions 8.0 U3g)

From 8.0 U3h onwards, the size of /storage/log will be 50GB by default for fresh vCenter deployments, major upgrades (7.x to 8.x) and patching using RDU (reduced downtime) method.
It is recommended to increase the disk size of /storage/log to 50 GB before updating in-place to higher versions (i.e, 8.0 U3h and above).

Increase the /storage/log partition size to 50 GB by following the steps below:

Important Considerations and Prerequisites:

Ensure a full file-level backup of the vCenter is taken before extending any disks. This is crucial for recovery in case of any issues.
Remove any snapshots on vCenter VM before proceeding. If extending the disk size option is greyed out, the disk may be running on VM level snapshots.

Login to vCenter via SSH
Change the shell to 'bash' using 'shell' command if the default shell is Appliance shell.

* List APIs: "help api list"
* List Plugins: "help pi list"
* Launch BASH: "shell"

Command> shell
Shell access is granted to root
root@<hostname> [ ~ ]#
Run below command to find the logical volume mapping to /storage/log mount.

lsblk -o NAME,HCTL,MOUNTPOINT,SIZE
Get the real path PCI device details for each device using below command.

ls -al /sys/block/sd*
Based on above step, the partition /sys/block/sde is mapped to SCSI device 0 and Unit number 4 (from the 3rd part of the HCTL entry [2:0:4:0] in the above screenshots), which means /sys/block/sde maps to SCSI (0:4).

Note:
In VC, the letter in /dev/sdX follows the alphabetical order to indicate the sequence of hard disks detected by the system. Hence, /dev/sde maps to Hard disk 5. But, it is recommended to follow above steps to find the disk.

a = Hard Disk 1 (/dev/sda)
b = Hard Disk 2 (/dev/sdb)
...
e = Hard Disk 5 (/dev/sde)
...
q = Hard Disk 17 (/dev/sdq)

Log in to the vCenter Server using vSphere Client that manages the VC that requires disk resizing (it can also be self-managed VC)
Locate the VC VM, Right-click the VM -> Click Edit Settings
Go to the Hard Disk section and locate the hard disk as identified in above section.
Increase the disk size to 50 GB. Save the Settings (existing disk size will be 10 GB in Tiny and 25 GB in other deployments)

Notes:
Keep it exactly 50GB for future support.
If this option is greyed out, the disk may be running on snapshots or the disk may be at the maximum allowed size, depending on the block size of the datastore.

Log in to vCenter using SSH and switch to the shell.
* List APIs: "help api list"
* List Plugins: "help pi list"
* Launch BASH: "shell"

Command> shell
Shell access is granted to root
root@<hostname> [ ~ ]#
Run this command to automatically expand any logical volumes for which the physical volumes are increased.

/usr/lib/applmgmt/support/scripts/autogrow.sh
Run this command to confirm that the /storage/log disk has successfully grown.

lsblk

Additional Notes for FBBR Restore Action:
- For any Backup taken before this point, the restore has to be done before resizing the disk.
- For any Backup taken after this point, the restore has to be done after resizing the disk.
List of VMDKs/Partitions for a vCenter Server 8.0 - Size Mount point and Purpose.

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