Note: "permalinks" may not be as permanent as we would like,
direct links of old sources may well be a few messages off.
Hi, I have recently set up a two node cluster (on ubuntu 10.04LTS servers) using drbd, nfs & pacemaker/heartbeat. Everything is working well so far. I have some questions about best practices for the clients that are mounting the volume via NFS and hope people here have some advice. Specifically, I'm curious about some of the NFS mount options like proto=udp vs proto=tcp, hard vs. soft, nfsvers=3 vs. nfsvers=4, appropriate timeo= values, should intr be set, etc. I've already noticed that during failover with a low timeout and soft mount, i can get NFS errors while the shared ip switches over, so I'm pretty sure I want to use hard. Others options I'm not so sure about. I've read some conflicting statements from various people on different blogs/mailing lists. I've looked over http://www.drbd.org/docs/about/ and http://www.drbd.org/users-guide/ and haven't seen anything specifically going over these questions. Any advice or pointers to documentation would be greatly appreciated. I understand that this question leans a bit more towards NFS than drbd, but if I posted to a general NFS mailing list, most people wouldn't have experience with this kind of set up. Hopefully people on this list with a similar sort of setup have some words of wisdom to offer. Brian Hirt