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Re: cluster error

 
Kris Clippeleyr
Honored Contributor

Re: cluster error

shenan,
Is the only connection between the systems formed by the SCSI-cables?
If so, and one node is up, then the other node will not join the cluster, unless you have for instance a LAN connection between the 2 nodes.
Regards,
Kris (aka Qkcl)
I'm gonna hit the highway like a battering ram on a silver-black phantom bike...
Willem Grooters
Honored Contributor

Re: cluster error

Shared SCSI means port allocation class. This is also covered by the CLUSTER_CONFIG procedure.

If set up properly, the console should be able to locate your disks. Including the quorum disk:

>>> SHO DEV

Booting a cluster node on it's own should work without network, as long as the rest of the requirements (VOTES,EXPECTED_VOTES, QDISKVOTES, DISK_QUORUM) are set properly.
In the log of your startup sequence, it should be mentioned that access to this disk has been attempted.
Booting a next node into the cluster _requires_ a network connection: cluster traffic will not travel over SCSI (AFAIK).

If you boot conversational, you would be able to examine the following sysgen parameters:

VAXCLUSTER
EXPECTED_VOTES
VOTES
DISK_QUORUM
QDSKVOTES

What are the values for these?
(SHOW /CLUSTER once booted. In SYSINIT> you may have to access them one by one)
Willem Grooters
OpenVMS Developer & System Manager
Andy Bustamante
Honored Contributor

Re: cluster error

>>>this system was configure by myself earlier.. . .yes there is a quorum disk.now the system wont go futher

Is this the first boot since you configured the systems? A quorum disk needs the file QUORUM.DAT. This is created automatically when you start a cluster with enough votes.

For the first boot, you need to inflate the votes so this file is created, typically with an conversational boot. Set votes on one node to 2 (assuming votes=1,expected votes=3) boot that node, reset votes=1, reboot.

Andy

If you don't have time to do it right, when will you have time to do it over? Reach me at first_name + "." + last_name at sysmanager net
Hoff
Honored Contributor

Re: cluster error

Would both AlphaServer DS10 boxes be booting from the same system root on the same system disk on the same shared SCSI bus?

If so, check the SRM environment variables for the boot flag settings. Specifically, the BOOT_OSFLAGS boot root setting; the leftmost value in the pair.

If you're booting from the same disk using the same system root, you'd see exactly this symptom -- when OpenVMS prevents you from corrupting your disks.