Compaq AA-RHGWC-TE Bedienungsanleitung PDF herunterladen (Seite 118)

Table 5–4: Adding a Memory Channel Interconnect or Rolling from a Dual,

Redundant MC1 Interconnect to MC2 Interconnects (cont.)

Step

Action Refer to:

On one member system, use the sysconfig command

to reconfigure the Memory Channel kernel subsystem to

initiatethe use of 512 MB address space. The configuration

change is propagated to the other cluster member systems:

/sbin/sysconfig -r rm rm_use_512=1

______________________ Note ______________________

After the configuration change is propagated to the other member

systems, you can reboot any member system and the 512 MB address

space is still in effect.

If you use the sysconfig command to promote address space to 512

MB and inadvertently leave an MC2 adapter jumpered for 128 MB,

then reboot that system, it will not rejoin the cluster. When the system

with the Memory Channel adapter jumpered for 128 MB is shut down,

and the TruCluster software running on the remaining cluster member

systems discover that all operational Memory Channel adapters are

jumpered for 512 MB, because address space has been promoted to 512

MB, the active rail will use 512 MB address space. A system jumpered

for 128 MB cannot join the cluster. The startup error message on the

system jumpered for 128 MB follows:

panic: MC2 adapter has too little memory

If you have used the sysconfig command to promote Memory Channel

address space to 512 MB, you may need to know the actual address space

being used by a logical rail. Use the dbx debugger utility as follows to

determine:

• Logical size (in 8-KB pages) of a rail

• Physical size (J3 jumper setting) for physical rails

# dbx -k /vmunix

(dbx) p rm_log_rail_to_ctx[0]->mgmt_page_va->size

16384 2

(dbx) p rm_adapters[0]->rmp_prail_va->rmc_size 3

{

[0] 65536

[1] 0

[2] 65536

[3] 0

[4] 65536

[5] 0

[6] 0

[7] 0

}

5–18 Setting Up the Memory Channel Cluster Interconnect

1 2 ... 113 114 115 116 117 118 119 120 121 122 123 ... 361 362

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