We have just upgraded ontap from 8 to 8.1 on our 3140 filers. Following the upgrade the snapmirror's no longer worked, speaking to our support company I was advised to add the FQDN of the destination filers to the snapmirror.conf file, previous to this just the host name was speicified. I did this and the snapmirrors worked from the console command line but not from system manager (v2), at this stage i got no options other than edit when right clicking the snapmirror in system manager. I then removed the filers from system manager and added them back using ther FQDN and this seem to fix the issue for a short period of time. After about an hour the snapmirrors from within system manager no longer showed the FQDN for the destination but rather just the host name again, once again i could no longer manage the snapmirrors through system manager. I was told at this stage that this was an issue with oncommand, although this does not seem to feel right to me and i cant help thinking this is not the case as i could manage them and then i couldnt??????
I also noted at this point that the snaps were not working on their schedule, or at least the majority were not. So once again i got onto our support company who sent me a document on the format required for schedules in the snapmirror.conf file. I corrected all these and the snapmirrors once again worked on the schedule set. I am not happy though editing the snapmirror file all the time and still find it hard to believe this is an oncommand issue only. I also noted at this point that some snpmirrors shown in system manager do not appear in the snapmirror .conf file on either the dest or source filer, so where is system manager getting this from?
I really do not understand what is going on and I suspect neither do our support company, hence them being unable to resolve it correctly.
I have done a little bit of digging around and found that the IP's for the filers in the host file on each filer does not have the correct IP's and wonder if this is the reason why the hostname alone was failing and needed the FQDN.
Has anyone got any pointers or things i can check/look into as i am a little stuck now, although i have learnt alot about the snapmirror.conf file in the process. I am losing faith in our support company and think i need to try to resolve this one myself.
Sorry for the long post i am just trying to get all the information out there.So I guess the questions are:
Should the host file have the correct DNS registere IP's or the management/RLM ones?
Should system manager just reflect the snapmirrors that are in the snapmirror.conf file?
Why would i no longer be able to manage the snapmirrors from system manager? - on this point i seem to be able to manage those ones that have the same source and dest (FQDN) as the entry in the snapmirror.conf file.