Instead of –sg I would suggest using the –devs modified. So it would look something like this:
symsnapvx -sid xxx –devs 54 establish -name test01_snap
When you want to link to a larger target, you specify the target device with –lndevs. And since you are migrating, please do not forget to use –copy with your link command.
Another option would be to use a device file with symclone. But you would need to edit the options file to allow clone to larger target (it’s allowed by default with SnapVX).
Let me know if this helps.
BTW I should mention that you can use device files with SnapVX as well, but personally I like -devs better. The format of the device file will be different for establishing snapshots (source device) and linking targets (source and target pair). The -devs and -lndevs options let you specify right in the command line.
You are missing actions in both commands. I can't say for sure what you are trying to do.
But since the first command uses -name, I assume you are trying to create a snapshot, and are missing the "establish" action, but that is just a guess.
Second command, again a guess from the other parameters, you are missing "list" action.
But I do not see where you linked anything before trying to establish and the list -linked, so I could be wrong. If you can explain what you are trying to do in each step I can help more.