10-31-2008
Seems like you use SDD that creates vpath devices from the hdisks. The hdisks appear as often as there are paths, i.e. if you see every hdisk four times there are four paths from your server's FC adapter to the storage box. To make the best use of the multi path I/O you need to use the vpath devices for creating/extending a vg and must not use the hdisk devices. Basic SDD commands are hd2vp (to create vpath devices from hdisks) vp2hd (to remove the vpath device) and dpovgfix (if the vpath configuration got messed up).
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Correct
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hdisk1
hdisk2
::::::::::::
hdisk5
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hdisk6
hdisk7
hdisk10
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LEARN ABOUT MINIX
makedev
MAKEDEV(8) System Manager's Manual MAKEDEV(8)
NAME
MAKEDEV, DESCRIBE - make/describe device files
SYNOPSIS
MAKEDEV [-n] key ...
DESCRIBE [device] ...
DESCRIPTION
MAKEDEV may be used to create the device files normally found in the /dev directory. The key arguments are simply the names of the devices
you want. MAKEDEV knows about all supported devices and will create them in the current directory with the proper owner and mode. For
many devices MAKEDEV will not only create the device you want, but also the devices related to it that you will probably want too. Naming
one floppy device will create all floppy devices for the same drive for instance.
Call MAKEDEV without arguments to see a list of keys that it understands. Then use the -n flag to make the script echo the commands it
will execute the next time when you call it without that flag.
The special key std must be given alone to MAKEDEV. This key will create all standard devices.
The command DESCRIBE will give you a one-line description of a given device. It will by default list all devices in /dev.
SEE ALSO
mknod(8).
BUGS
MAKEDEV's eagerness to create devices may cause many "File exists" errors from mknod.
AUTHOR
Kees J. Bot (kjb@cs.vu.nl)
MAKEDEV(8)