Re: [Qemu-devel] [PATCH] Merge NBD client/server int qemu-nbd

[Avi Kivity]

Laurent Vivier wrote:
> No, for me, the open() generates the events:
>
> open() -> blkdev_open() -> do_open() -> rescan_partitions() ->
> add_partitions() -> device_add() -> kobject_uevent()
>
> If you remove show_parts() from the main(), the partitions appear only
> on the first open on the device, for instance you can run manually
> "cmp /dev/nbd0 /dev/zero" after "qemu-nbd --connect=/dev/nbd0 ...".
>
>   

Well then, simply call udevsettle after the open of the block device, 
after which you're guaranteed to have the paritions.

--
I have a truly marvellous patch that fixes the bug which this
signature is too narrow to contain.