root disk mirror in veritas/solaris

[kothur]

Hi all,
Is there a way to ensure that the mirrored copy of my root disk is bootable without booting the server from the root mirror. We are using vxvm 4.1 on solaris 8 and 10 servers. I have checked that the prtvtoc of both the rootdisk and rootmirror shows the same partitions and vxprint -g rootdg -ht also shows that all the volumes in the rootdg are mirrored.

Thanks,

 

[bfitzmai]

Kothur,
Unless you try to boot from your mirror, you will never be 100% sure. One thing you need to do is create a nvalias for your root mirror disk. Place the nvalias name as the first entry in the NVRAM entry boot-device. You should have both the root disk and rootmirror disk in the NVRAM entry. If you make any changes to NVRAM you should run reset-all prior to rebooting.

Also make sure you placed the boot block on root mirrors disk partition.

 

[Annihilannic]

Also, you didn't mention whether you have installed a boot block on the second disk... if not, have a look at man installboot.

Another gotcha to watch out for is that sometimes the volumes on the mirror disk are not placed in the same locations as the original disk, so double-check the offsets of each plex in vxprint, and also check that the private region is in the same place on both disks (either the beginning or the end).

Annihilannic.

 

[kothur]

Thanks for your quick responses. Sorry I could not thank you guys immeditaley.