What were you trying to do that didn't work?

When running the lvcreate command with the option --vdosettings minimum_io_size=512 for creating a VDO volume, the command fails with the error:
VDO minimum io size 512 is unsupported [512, 4096].

However, using --config=allocation/vdo_minimum_io_size=512 works:

1. lvcreate --vdo -L 10G --config allocation/vdo_minimum_io_size=512 vg
   WARNING: vdo signature detected on /dev/vg/vpool0 at offset 0. Wipe it? [y/n]: y
     Wiping vdo signature on /dev/vg/vpool0.
       Logical blocks defaulted to 1569686 blocks.
       The VDO volume can address 6.00 GB in 3 data slabs, each 2.00 GB.
       It can grow to address at most 16.00 TB of physical storage in 8192 slabs.
       If a larger maximum size might be needed, use bigger slabs.
     Logical volume "lvol0" created.

   What is the impact of this issue to you?

This prevents users from specifying the minimum_io_size with --vdosettings option.

Please provide the package NVR for which the bug is seen:

lvm2-2.03.27-1.el10

How reproducible is this bug?:

always

Steps to reproduce

1. vgcreate vg /dev/sda
2. lvcreate --vdo -L 10G --vdosettings minimum_io_size=512 vg
     VDO minimum io size 512 is unsupported [512, 4096].
     Run `lvcreate --help' for more information.

Expected results

The lvcreate command should allow the creation of a VDO volume with a supported minimum_io_size, or provide a clear validation and error message.

Actual results

The command fails with an error message stating that the minimum_io_size of 512 is unsupported:

 VDO minimum io size 512 is unsupported [512, 4096].
  Run `lvcreate --help' for more information.