[issue1667] disklabel / disklabel64 change needs reboot / disk change

["Alex Hornung \(via DragonFly issue tracker\)" <sinknull@xxxxxxxxxxxxxxxxxxxxx>]

Alex Hornung <ahornung@gmail.com> added the comment:

To fix this, please add the following lines in "case DIOCWLABEL:" 
(sys/kern/subr_diskslice.c)
disk_msg_send_sync(DISK_SLICE_REPROBE, dev->si_disk, sp);
devfs_config();
just after line 648:
set_ds_wlabel(ssp, slice, *(int *)data != 0);

I can't do it right now, but I'll be back to work on this and more on the 
weekend. 

This should solve the disklabel issue at least. Direct writes (e.g. dd) should 
be detected properly with the DSF_REPROBE magic. If not, please post some more 
info on the disk/slice structure.

Cheers,
Alex Hornung

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assignedto:  -> alexh
nosy: +alexh
priority:  -> bug

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