Hi,

I am trying to configure PAV on RHEL 4 and am running into a problem.  I
have been working from the "How to Improve Performance with PAV November
17, 2006" document.

So it appears PAV is configured.

i.e.

DASD 0100 ON DASD  304F R/W 0X0100 SUBCHANNEL = 0000
*DASD 0101 ON DASD  314F R/W 0X0101 SUBCHANNEL = 0001*
DASD 0190 3390 520RES R/O        107 CYL ON DASD  300B SUBCHANNEL = 0008
DASD 0191 3390 VM350B R/O        470 CYL ON DASD  350B SUBCHANNEL = 000C
DASD 019D 3390 V01W01 R/O        146 CYL ON DASD  330B SUBCHANNEL = 0009
DASD 019E 3390 V01W01 R/O        250 CYL ON DASD  330B SUBCHANNEL = 000A
DASD 0200 9336 (VDSK) R/W     524288 BLK ON DASD  VDSK SUBCHANNEL = 0016
*DASD 0201 ON DASD  31B0 R/W 0X0101 SUBCHANNEL = 0002*
DASD 0592 3390 V01W01 R/O         67 CYL ON DASD  330B SUBCHANNEL = 000B


# vmcp q pav 314f
Device 314F is a base Parallel Access Volume with the following aliases:
31B0

However, after loading the kernel module:
dm_multipath           43792  0

and starting multipathd, oh and modifying the /etc/multipath.conf to
comment out the blacklist (and yes I modified the file before starting
multipathd) I still get no results when I run mulipath.


# multipath
#

When I run multipath -v3 -d I get the following:

load path identifiers cache
ux_socket_connect error
#
# all paths in cache :
#
path dasda not found in pathvec

===== path info dasda (mask 0x1f) =====
path dasdb not found in pathvec

===== path info dasdb (mask 0x1f) =====
path dasdc not found in pathvec

===== path info dasdc (mask 0x1f) =====
path dasdd not found in pathvec

===== path info dasdd (mask 0x1f) =====
md0 blacklisted
ram0 blacklisted
ram10 blacklisted
ram11 blacklisted
ram12 blacklisted
ram13 blacklisted
ram14 blacklisted
ram15 blacklisted
ram1 blacklisted
ram2 blacklisted
ram3 blacklisted
ram4 blacklisted
ram5 blacklisted
ram6 blacklisted
ram7 blacklisted
ram8 blacklisted
ram9 blacklisted


I am concerned about the ux_socket_connect error and the not found in
pathvec errors.  Anyone know what might be going on here?  Am I missing
something here?

thanks!
Eric

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