Re: Advice needed - switching IP for SS

2016-02-04 Thread Andrija Panic
Thanks Remi! I will give this a try. Cheers On 4 February 2016 at 12:46, Remi Bergsma wrote: > Hi Andrija, > > If you add to the export of both the old and the new server the option > ‘fsid=0’ (or any other id), then you can change the mount to another server > without issues and the OPS recogn

Re: Advice needed - switching IP for SS

2016-02-04 Thread Remi Bergsma
Hi Andrija, If you add to the export of both the old and the new server the option ‘fsid=0’ (or any other id), then you can change the mount to another server without issues and the OPS recognises this as the same mount. Otherwise, in my experience, it will not work and result in stale NFS hand

Re: Advice needed - switching IP for SS

2016-02-04 Thread Andrija Panic
Guys, this would work, yes, as Igor also mentioned, the only thing I'm concerned (but will need to test in on dev enviroment) is if NFS share that is already mounted on KVM hosts, will be gratefully remounted and not stuck/stale when I move IP from one NFS box to another... Anyone has experience

Re: Advice needed - switching IP for SS

2016-02-03 Thread Sanjeev N
Hi Daniel, It is possible to have the MAC-IP pair in the switch arp cache. You can use arping from your new NFS server to send gratious arp request, so that the switch can update the MAC address in its arp cache. Thanks, Sanjeev On Thu, Feb 4, 2016 at 1:47 PM, Daniel Mezentsev wrote: > Igor,

Re: Advice needed - switching IP for SS

2016-02-03 Thread Daniel Mezentsev
Igor, I have question. Doing such IP migration is it possible that arp cache on the switch (assuming that we have layer 3 switch) can have old server pair MAC<--->IP. Andrija, as for me the best solution: 1. shutdown data interfaces (or bond) on switch for new server after rsync 2. Configur

Re: Advice needed - switching IP for SS

2016-02-03 Thread Voloshanenko Igor
Andrija, as for me the best solution: 1. shutdown data interfaces (or bond) on switch for new server after rsync 2. Configure same IP as for old server 3. via switch CLI shutdown data ports for old server 4. via switch CLI startup ports for new server 4. Reconfigure IP for data bond old server via

Advice needed - switching IP for SS

2016-02-03 Thread Andrija Panic
Hi guys, I need to do manitance of 1 Seconary Storage NFS server fro few days, so I though to temporarily rsync data to another NFS box, and switch IP addresses, so the new NFS box has the original IP for few days...(need to test if KVm nodes will gracefullt remount the NFS server during the IP sw