Re: NFS server fail-over - how do you do it?

From: adp (dap99_at_i-55.com)
Date: 05/31/04

  • Next message: Paulo Roberto: "pcmcia linksys wpc11 version 4" 
    To: <questions@freebsd.org>
Date: Sun, 30 May 2004 20:25:50 -0500

    One of my big problems right now is that if our primary NFS server goes down
    then everything using that NFS mount locks up. If I change to the mounted
    filesystem on the client then it stalls:

    # pwd
    /root
    # cd /nfs-mount-dir
    [locks]

    If I try to reboot the reboot fails as well since FreeBSD can't unmount the
    filesystem!?

    How do I stop this from happening?

    I am using this to mount NFS filesystems:

    # mount -o bg,intr,soft ...

    ----- Original Message -----
    From: "adp" <dap99@i-55.com>
    To: <questions@freebsd.org>
    Sent: Sunday, May 30, 2004 2:43 AM
    Subject: NFS server fail-over - how do you do it?

    > I am running a FreeBSD 4.9-REL NFS server. Once every several hours our
    main
    > NFS server replicates everything to a backup FreeBSD NFS server. We are
    okay
    > with the gap in time between replication. What we aren't sure about is how
    > to automate the fail-over between the primary to the secondary NFS server.
    > This is for a web cluster. Each client mounts several directories from the
    > NFS server.
    >
    > Let's say that our primary NFS server dies and just goes away. What then?
    > Are you periodically doing a mount or a file look-up of a mounted
    filesystem
    > to check if your NFS server died? If so are you just unmounting and
    > remounting everything using the backup NFS server?
    >
    > Just curious how this problem is being solved.
    >
    >

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  • Next message: Paulo Roberto: "pcmcia linksys wpc11 version 4"

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