Creating a virtual machine with multiple disks often leads to "Invalid device configuration" error.
When adding multiple virtual disks to a VM (either during createVM or reconfig operation), we assign the disk.key as a negative number. This ensures that hostd automatically assigns a unique positive key to the new virtual disk. However, when adding multiple disks, this negative number should also be unique. For e.g., while adding 2 virtual disks, both disks should not have same negative integer assigned, for e.g., "-100". It should be -100 and -101.
We have sometimes seen a behavior which leads to additional 0-byte VMDKs being created because of same negative number being assigned to all virtual disks being added. With unique negative number for each virtual disk, this issue got resolved.
When adding multiple virtual disks to a VM (either during createVM or reconfig operation), we assign the disk.key as a negative number. This ensures that hostd automatically assigns a unique positive key to the new virtual disk. However, when adding multiple disks, this negative number should also be unique. For e.g., while adding 2 virtual disks, both disks should not have same negative integer assigned, for e.g., "-100". It should be -100 and -101.
We have sometimes seen a behavior which leads to additional 0-byte VMDKs being created because of same negative number being assigned to all virtual disks being added. With unique negative number for each virtual disk, this issue got resolved.
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