topic Re: Dynamic Root Disk in Operating System - HP-UX

Dynamic Root Disk

Sum_2 — Tue, 15 Mar 2011 22:10:12 GMT

Hi all.
I have a query on DRD. i have done the cloning and installed a patch on the cloned disk and waiting for next reboot to test the clone disk. Meanwhile i have added a user into the OS ( which is on the original disk). Can someone please suggest me how can i replicate the change (new user) in the original disk to the cloned disk? I belive if i simply do another cloing the installed patches on the the cloned disk will be lost. Can someone suggest me how can i do this?

Re: Dynamic Root Disk

Emil Velez — Wed, 16 Mar 2011 00:16:22 GMT

if you review the documentation there is defined procedures to copy files to/from the drd clone.

You could do a drd mount and just copy the passwd file to the drd / filesystem.

Re: Dynamic Root Disk

Torsten. — Wed, 16 Mar 2011 04:49:01 GMT

I agree, mount the volume and do the same modification on the clone would be the best solution here.

Re: Dynamic Root Disk

melvyn burnard — Wed, 16 Mar 2011 10:19:59 GMT

which version of DRD do you have?
the latest versions have a "sync" capability to update the clone

Re: Dynamic Root Disk

Ismail Azad — Wed, 16 Mar 2011 18:13:14 GMT

Hi,

As melvyn mentioned , the latest DRD version has a sync and status functionality not_present in previous versions. Previously synchronization was done by "recloning" but now you can just do a drd sync.

Running certain commands might_not change what is desired for that you have to be clear with the concept of the "active" and "inactive" system image.

/var/opt/drd/mnts/sysimage_001/usr/sbin/vipw changes the RUNNING active image's /etc/passwd file and not , i repeat and_not /var/opt/drd/mnts/sysimage_001/etc/passwd! Do this with caution!.

That might sound misleading but that is how_DRD works!

Regards
Ismail Azad

Re: Dynamic Root Disk

Sum_2 — Thu, 17 Mar 2011 02:03:49 GMT

Melvyn/ Ismail,

can you please list me the commands for drd sync ? i have the latest version of DRD in my server..after the cloning and patching on the cloned disk i have added some users to the active disk and now i need to update the chqanges (/etc/passwd and group) to the cloned disk..can please list the commands ( using drd sync)? do i need to add the list of files modified on any of the file?

Re: Dynamic Root Disk

Ismail Azad — Fri, 18 Mar 2011 18:36:42 GMT

Hi,

Command... Just like you execute drd activate, drd deactivate etc... you can just execute a drd sync!

Regards
Ismail Azad

Re: Dynamic Root Disk

melvyn burnard — Fri, 18 Mar 2011 18:54:28 GMT

man drd
That should give you the information you need