like to move the cluster to the new storage

[moiauh]

we have two hpux servers with a shared storage(cx300).the quarum disks are in this storage.recently we added another cx300 to these servers.we like to move the cluster to the new storage.any one can help with the configuration?

thanks,
mohan

[Doug O'Leary · Accepted solution]

Hey;

Moving the actual data should be relatively simple assuming the lun sizes presented to the systems are farily close in size.

Simply add the new disks to the vg, mirror the lvs to the new disks, then reduce out the originals. You've just migrated the data. This can even be done on the fly while the system is live although it would take significantly longer that way.

Once everything's migrated to the new disks, vgreduce out the disks on the old cx300. No need for any cluster/pkg outage or reformation - to this point.

The issue is going to be the pv lock disk. Assuming that's what you're calling the quorum disk, the only way to move that is to take down the cluster, update the ascii file, regenerate it and restart it. The good news, though, assuming everything works, this is only about a 5 minute operation - if you type slow:

cmgetconf -c ${cluster} ${cluster}.ascii
vi ${cluster}.ascii # update the lock disk
cmcheckconf -C ${cluster}.ascii
cmapplyconf -C ${cluster}.ascii

HTH;

Doug O'Leary

[Ivan Krastev]

Do you have lock disk(s) in the cluster. This will be the hardest part.

See the documentation here - http://docs.hp.com/en/B3936-90122/ch07s04.html#babfcddg


For other storage tasks you can add disks in the cluster from the second array on both nodes, mirror the data over new disks and after that remove the mirror from the first array.

regards,
ivan

[moiauh]

thank you mr.Doug O'Leary,mr.ivan.
i will follow the steps.in this project i am facing another problem also - I created 93luns of 8gb in 3raid groups.few of the luns are showing 0 bytes after doing ioscan and insf -e.why the luns are showing 0 bytes?

did ioscan,then insf -e ,hosts are able to see the paths.still some luns are showing 0 bytes and in emc initiator loged on status is 'no'

any help?