On Thursday, 04/14/2011 at 03:38 EDT, ssda...@jerusalem.muni.il wrote:
> I get
> DTCPC3080I PCCA3 initializing:
> DTCPRI385I Device LCS1:
> DTCPRI386I Type: LCS, Status: Not started
> DTCPRI387I Envelope queue size: 0
> DTCPRI388I Address: 0500
> DTCPC3045E PCCA3 device LCS1: Error getting XA subchan id for 0000500 or
> 00000501
>
> DTCPC3082E PCCA3 shutting down:
> DTCPRI385I Device LCS1:
> DTCPRI386I Type: LCS, Status: No status available
> DTCPRI387I Envelope queue size: 0
> DTCPRI388I Address: 0500
>
> I then bring down TCPIP and bring it up again and it works .
>
> What's going on ?
The devices aren't online. Remember that OSA's will re-load their
firmware on the first activation after ALL sharing LPARs have deactivated
their chpids. After a POR, or the VM LPAR is the only thing using that
chpid and you deactivate/re-active the LPAR (some people do then in order
to IPL), then you trigger the firmware reload.
On older machines, it took a while for the firmware to load (these days
it's pretty much instantaneous), so DEDICATE statements often weren't
sufficient. Instead of DEDICATEs, consider using the :Exit. tag in SYSTEM
DTCPARMS. With an :Exit., you can delay TCPIP startup until both 500 and
501 come online. There's also :Attach., which will do a VARY ONLINE and
an ATTACH, but it doesn't have a way to wait for the device.
As an aside, the "Error getting XA subchan id" means that STORE SUBCHANNEL
instruction for the indicated device number failed with CC=3 ("Not
operational"). The relevant lTCP/IP Messages & Codes says:
o Ensure both of the indicated device addresses are
attached to the TCP/IP virtual machine. Verify the
:Attach tag values, as specified for this device in the
DTCPARMS file, are correct.
I grant you, it's a horrible message for those not steeped in the lore of
S/370-XA I/O, and the above explanation in the book is a bit "thin" on
problem resolution.
Alan Altmark
z/VM and Linux on System z Consultant
IBM System Lab Services and Training
ibm.com/systems/services/labservices
office: 607.429.3323
mobile; 607.321.7556
alan_altm...@us.ibm.com
IBM Endicott
