gitkodak

1="Unsupported protocol. This build of curl has no support for this protocol."
2="Failed to initialize."
3="URL malformed. The syntax was not correct."
4="A feature or option that was needed to perform the desired request was not enabled or was explicitly disabled at build-time. To make curl able to do this, you probably need another build of libcurl!"
5="Couldn't resolve proxy. The given proxy host could not be resolved."
6="Couldn't resolve host. The given remote host was not resolved."
7="Failed to connect to host."
8="Weird server reply. The server sent data curl couldn't parse."
9="FTP access denied. The server denied login or denied access to the particular resource or directory you wanted to reach. Most often you tried to change to a directory that doesn't exist on the server."
10="FTP accept failed. While waiting for the server to connect back when an active FTP session is used, an error code was sent over the control connection or similar."

gitkodak

I'm trying to automatically add disks to Linux VMs on a vmware hypervisor through the vsphere API.

This isn't as simple as it sounds.  Linux SCSI devices, as you probably know, use the format:

CONTROLLER:BUS:SCSI_ID:LUN

for addressing SCSI disks.  For example:

[3:0:2:0]    disk    VMware   Virtual disk     1.0   /dev/sdk