[gpfsug-discuss] GPFS Windows Mount

[Isom Crawford]

Hi Michael,

It's been a while, but I've run into similar issues with Scale on Windows.
One possible issue is the GPFS administrative account configuration using
the following steps:
----

1. Create a domain user with the logon name root.

2. Add user root to the Domain Admins group or to the local Administrators
group on each Windows node.

3. In root Properties/Profile/Home/LocalPath, define a HOME directory such
as C:\Users\root\home that does not include spaces in the path name and is
not the same as the profile path.

4. Give root the right to log on as a service as described in “Allowing the
GPFS administrative account to run as a service.”

Step 3 including consistent use of the HOME directory you define, is
required for the Cygwin environment

----

I have botched step 3 before with the result being very similar to your
experience.  Carefule re-configuration of the cygwin root *home* directory
fixed some of the problems.

Hope this helps.



Another tangle you may run into is disabling IPv6.   I had to completely
disable IPv6 on the Windows client by not only deselecting it on the
network interface properties list, but also disabling it system-wide.  The
symptoms vary, but utilities like mmaddnode or mmchnode may fail due to
invalid interface.  Check the output of
/usr/lpp/mmfs/bin/mmcmi host <yourhostnamehere>
to be sure it's the host that Scale expects.  (In my case, it returned  ::1
until I completely disabled IPv6).



My notes follow:
This KB article tells us about a setting that affects what Windows prefers,
emphasized in bold:
            In Registry Editor, locate and then click the following
            registry subkey:


            HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\Tcpip6
            \Parameters

            Double-click DisabledComponents to modify the
            DisabledComponents entry.


            Note: If the DisabledComponents entry is unavailable, you must
            create it. To do this, follow these steps:
                  In the Edit menu, point to New, and then click DWORD
                  (32-bit) Value.
                  Type DisabledComponents, and then press ENTER.
                  Double-click DisabledComponents.
            Type any one of the following values in the Value data: field
            to configure the IPv6 protocol to the desired state, and then
            click OK:
                  Type 0 to enable all IPv6 components. (Windows default
                  setting)
                  Type 0xffffffff to disable all IPv6 components, except
                  the IPv6 loopback interface. This value also configures
                  Windows to prefer using Internet Protocol version 4
                  (IPv4) over IPv6 by modifying entries in the prefix
                  policy table. For more information, see Source and
                  Destination Address Selection.
                  Type 0x20 to prefer IPv4 over IPv6 by modifying entries
                  in the prefix policy table.
                  Type 0x10 to disable IPv6 on all nontunnel interfaces (on
                  both LAN and Point-to-Point Protocol [PPP] interfaces).
                  Type 0x01 to disable IPv6 on all tunnel interfaces. These
                  include Intra-Site Automatic Tunnel Addressing Protocol
                  (ISATAP), 6to4, and Teredo.
                  Type 0x11 to disable all IPv6 interfaces except for the
                  IPv6 loopback interface.
            Restart the computer for this setting to take effect.




Kind Regards,
Isom L. Crawford Jr., PhD.
                                                                                     
   NA SDI SME Team                                                                   
   Software Defined Infrastructure                                                   
                                                                                     
   2700 Redwood Street                                                               
   Royse City, TX  75189                                                             
   United States                                                                     
                                                                                     

                                                                                       
                                                                                       
                                                                                       
   Phone: 214-707-4611                                                                 
   E-mail: isom.crawford at ibm.com                                                       
                                                                                       
                                                                                       


-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://gpfsug.org/pipermail/gpfsug-discuss_gpfsug.org/attachments/20180621/22333f08/attachment-0002.htm>
-------------- next part --------------
A non-text attachment was scrubbed...
Name: ecblank.gif
Type: image/gif
Size: 45 bytes
Desc: not available
URL: <http://gpfsug.org/pipermail/gpfsug-discuss_gpfsug.org/attachments/20180621/22333f08/attachment-0002.gif>