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Operating Systems AIX SAN Disk Appearing double in AIX Post 302844002 by bakunin on Friday 16th of August 2013 05:02:09 AM
Old 08-16-2013
Actually that you see the same disk from different angles is not a bug, it is a feature. If one of these connections (and hence the related hdisk device) would be disconnected the whole system would still work.

This is what "multipath" drivers are all about: to create single devices back from the various device entries, which represent different views of the same hardware.

Not sure what your question is, but i hope this helps.

bakunin
 

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io_redirect_dsf(1M)													       io_redirect_dsf(1M)

NAME
io_redirect_dsf - redirect the persistent device special file from one device to a different device SYNOPSIS
old_hw_path new_hw_path old_dsf new_dsf DESCRIPTION
The command reassigns a persistent device special file (DSF) to a new device when both devices belong to the same class. If the new device does not already exist, before reassigning it you must create the DSF by running either or (see insf(1M) and mksf(1M)). In the first form, the command accepts as input the lun hardware paths of the device to be replaced and the new device. In the second form, the command accepts as input the persistent DSFs of the device to be replaced and the new device. Note: The device is inaccessible while the redirection is taking place. Options recognizes the following options: Specify the hardware path of the device that is being replaced. returns an error if old_hw_path is not a lun hardware path. Specify the hardware path of the new device. returns an error if new_hw_path is not a lun hardware path. Specify the device special file of the device that is being replaced. returns an error if old_dsf is not a persistent DSF. Specify the device special file of the new device. returns an error if new_dsf is not a persistent DSF. RETURN VALUE
Exit values are: Successful completion. An error condition occurred. EXAMPLES
Redirect the DSF with the hardware path at to point to the hardware path at Both disks belong to the class. Redirect the DSF to point to the device with DSF Both DSFs represent devices that belong to the class WARNINGS
You must be superuser to execute the command. SEE ALSO
insf(1M), mksf(1M), intro(7). io_redirect_dsf(1M)
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