USB Flash reader under RELENG_6: force GEOM rescan

[Dmitry Morozovsky]

Dear colleagues,

I have USB multi-LUN flash reader which is identified under RELENG_6 as

umass0: GENERIC USB Storage Device, rev 2.00/1.8a, addr 2
da0 at umass-sim0 bus 0 target 0 lun 0
da0: <GENERIC USB Storage-CFC I19B> Removable Direct Access SCSI-0 device 
da0: 40.000MB/s transfers
da0: Attempt to query device size failed: NOT READY, Medium not present
da1 at umass-sim0 bus 0 target 0 lun 1
da1: <GENERIC USB Storage-MSC I19B> Removable Direct Access SCSI-0 device 
da1: 40.000MB/s transfers
da1: Attempt to query device size failed: NOT READY, Medium not present
da2 at umass-sim0 bus 0 target 0 lun 2
da2: <GENERIC USB Storage-SMC I19B> Removable Direct Access SCSI-0 device 
da2: 40.000MB/s transfers
da2: Attempt to query device size failed: NOT READY, Medium not present
da3 at umass-sim0 bus 0 target 0 lun 3
da3: <GENERIC USB Storage-SDC I19B> Removable Direct Access SCSI-0 device 
da3: 40.000MB/s transfers
da3: Attempt to query device size failed: NOT READY, Medium not present

when I insert flash into one of slots, I need to rescan da* providers, as 
usually there is slice1 which should be mounted. 

How can I achieve this? camcomtrol rescan does not help, and for now I've found 
only *very* ugly workaround like

dd if=/dev/da0 of=/dev/da0 count=1 

which results in error, but actually create GEOMs

Any hints? Thanks in advance.

Sincerely,
D.Marck                                     [DM5020, MCK-RIPE, DM3-RIPN]
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*** Dmitry Morozovsky --- D.Marck --- Wild Woozle --- marck at rinet.ru ***
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