I just found that this patch was merged last month:

Adding another use of commands.execCmd(cmd, sync=False) and AsyncProcessOperation.

These APIs are deprecated and will be removed soon, please do merge any code using

them.

Also running commands anachronistically with a timeout is a bad idea in general.

If the command is stuck on storage, we will created huge amount of commands.

We have the same bad pattern in storage (iscsi/fcp rescan), it should be replaced by

running command synchronically (sync=False) in a dedicated thread, and never

running more then one command if the command get stuck.

Marcin is working on the new improved infrastructure for running commands, based

Nir