How many files do you have? ndmpcopy can take a looooong time if you are copying millions and millions of files. If you have similar sized volumes snapmirror (as long as the destination is equal or greater then the source) is a good solution, the only caveat is to make sure you have like disks for the snapmirror. If not, you'll have to reallocate the destination after the migration is done.
As Adam said, vol copy is a good and cheaper solution.
I've taken to adding a user with the useradmin command, then using ndmpd passwd command to create a throwaway password for the ndmpcopy to use. Makes me feel better when passing authentication credentials around.
-Blake
On 4/10/07, Langdon, Laughlin T. (Lock) Langdon.Lock@mayo.edu wrote:
ndmpcopy –sa <username>:<password> -da <username>:<password> <sourcefilername>:/vol/<volname> <destinationfilername>:/vol/<volname>
Sa username/pw = the source filer's credentials, da is the destinations filer's credential
The paths are case sensitive, so make sure it's all correct..
So to answer question 1 the absolute path is /vol/<volname> or if you just want to move a folder in a volume it would be /vol/<volname>/<foldername>
From: owner-toasters@mathworks.com [mailto:owner-toasters@mathworks.com] On Behalf Of Brian Dunbar Sent: Tuesday, April 10, 2007 1:44 PM To: toasters@mathworks.com Subject: ndmpcopy and the newb
Hi,
I'm new to managing Filers - I hope you'll put up with a newb question or two while I get on my feet. I've not been left entirely on my own here - but there are two unix guys here to mange a lot of servers where before there were four of us .. and the two guys who had done this job previously are the ones who left for greener pastures. So I've got a mature and reasonably stable infrastructue to work with at least.
My first task is to move a volume from a busy filer to a non-busy filer.
- The preferred method (for our shop, I'm told) is to use ndmpcopy
I've got shell access to both filers, they can ping each other. I've got a desination volume created.
ndmpcopy [options] source destination
The source and destination specify a hostname (no problem) and aboslute pathname of the directory to be used for the transfer. Does this mean the absolute pathname of the source/destination volume? Or .. something else? If the former how do I find that?
- Unless there is a better way to do this? I can of course mount both
volumes via NFS from a 3rd host and simply move then but (from what I've read) ndmpcoy is a better choice.
Brian Dunbar Plexus brian.dunbar@plexus.com