standard berk-dump:
level 1 will catch all since level 0. you can do this repeatedly. level 2 will catch all since levels 1 or 0. you can do this repeatedly. level 3 will catch all since levels 2, 1 or 0. you can do this repeatedly.
you can run a level 1 *AFTER* and catch all since the last level 0. (i'm not sure why you'd do that, but you can :-)
you can run a level 2 without running a level 1 between it and the level 0. in fact, you can running a level n dump requires only a level 0 to have been run previously, not level n-1, not level n-2 and so on
ndmpcopy
level 1 will catch all since level 0. you can do ONE level 1. level 2 will catch all since level 1. you can do ONE level 2. level 3 will catch all since level 2. you can do ONE level 3.
you cannot run level 3 after level 1, you must run a level 2 first and then the level 3.
if you try to run multiple level 1's you get an error saying that the next level should be level 2. ndmpcopy will abort the ndmp sessions and if you are running 5.3.6 (or 5.3.6R1P2) you might have trouble running further ndmp activities without a reboot.
if you try to skip level n, then you get an error saying that the next level should be level n. ndmpcopy will abort the ndmp sessions ...
you need to run a level 0, then a 1, then a 2, then a 3 and so on. you get 10 dumps in total. sorry.
now, snapmirror will happily do hundreds of incrementals, but not ndmpcopy. the "enhanced" ndmpcopy that you see talked about on the list will do more.
-- email: lance_bailey@pmc-sierra.com box: Lance R. Bailey, unix Administrator vox: +1 604 415 6646 PMC-Sierra, Inc fax: +1 604 415 6151 105-8555 Baxter Place http://www.lydia.org/~zaphod Burnaby BC, V5A 4V7 Are there any men ladybugs? -- Libby, Grace Under Fire
Leonard, Roger wrote:
i am attempting to use ndmpcopy to migrate data between filers which are being backed up with Netbackup NDMP and it appears as though they are confusing each other because it looks like both reference the etc/dumpdates file on the source filers. can anyone sanity-check me on the various levels? i assume that a level 9 picks up all changes since the last level 0. so i could do a level 0 and then multiple level 9's until i was ready to cut over. so in my case i could do a level 0, turn off netback backups and nfs and cifs and then do a level 9 to cut over all changes. any help is appreciated
Roger D. Leonard