Removal of EMC disk device files

[Neale Machin]

We have an N class which needs to be removed from an EMC Symmettrix.The symmetrix is currently switched off and these devices are shoing as NO_HW on ioscan (as would be expected)
I have removed them from powerpath but how do I remove them so that ioscan no loger will pick them up?
Many thanks

[Tom Geudens]

Hi,
You could do "rsmf" of the devicefiles ... but you'll still get NO_HW on the path.
The only "complete" solution is ... a reboot of the server.

Regards,
Tom

[Jean-Louis Phelix]

hi,

You should rather try rmsf -H hardware_path. It should work.

Regards.

[Armin Feller]

Hi,

do:

# rmsf -H
# ioscan -fn

Regards,
Armin

[Jerry Morency]

Hi,

We did this on a K570 and we could not re-boot until we added a SCSI terminator where the EMC cables were disconnected.

Jerry

[Patrick Wallek]

As far as I know the 'rmsf' will just remove the device files for the devices that you removed. The NO_HW entries will still show up in ioscan until you reboot.

Check out the following document from the ITRC TKB: http://www2.itrc.hp.com/service/cki/docDisplay.do?docLocale=en_US&docId=200000065679876

It is Doc ID KBRC00008568

The last paragraph of the above referenced document:

"A reboot is needed to remove the NO_HW from ioscan because of the kernel I/O tree. During bootup the kernel builds an I/O tree that resides in memory. Entries can be added to the kernel I/O tree but they cannot be removed. In general, it takes a reboot to get rid of NO_HW entries."