Hi, I've got an environment of three servers running Solaris 10 x64 u9. Two of these servers (let's call them "A" and "B") are clustered using Veritas Cluster Server, and they NFS-share a filesystem. The share has no options set, so it's "rw" to the world.
The third server (let's call it "C") NFS-mounts the share from the cluster via an entry in its dfstab. This mount also has no options set (although we've previously tried soft and hard mounts). The contents of /etc/default/nfs on this server has NFS_CLIENT_VERSMAX=3, otherwise all entries are default. We've also tried forcing NFS version 4 on the mount. The problem is this: if we fail over the NFS share from A to B, the NFS mount on C hangs during the failover as expected. Once the NFS server components are up on B, the mount recovers automatically within a second or so, as expected. However, if we perform a failback of the share from B to A, the mount on C takes approx 7 to 8 minutes to recover automatically. During this period, C can ping A and B, and the virtual address and name associated with the failover NFS share. Further failovers/failbacks, if performed without large time intervals between them, also cause the long recovery of the NFS mount on C. If however we wait a good while (perhaps 30 mins or more) before performing another failover test, the recovery from the hanging NFS mount on C is quick again, back to one second or so. Does anyone have any ideas why the MFS mount takes so long to recover from the hang under the scnenarios described above ? Thanks, AV. ******************************************************************************************************** The information contained in this e-mail is confidential and may be privileged. It is intended for the addressee only. If you are not the intended recipient, please delete this e-mail immediately. The contents of this e-mail must not be disclosed or copied without the sender's consent. We cannot accept any responsibility for viruses, so please scan all attachments. No changes to Terms and Conditions of trade can be accepted through e-mail communication. All changes to Terms and Conditions must be in writing evidenced by a director of the company and in hard copy format. The statements and opinions expressed in this message are those of the author and do not necessarily reflect those of the company. The company does not take any responsibility for the views of the author. ********************************************************************************************************* SPECIALIST COMPUTER HOLDINGS PLC is a company registered in England and Wales with Company No. 04279856. Registered office: James House, Warwick Road, BIRMINGHAM. B11 2LE. VAT Registration Number is GB 313 6516 80 _______________________________________________ nfs-discuss mailing list [email protected]
