problem sync'ing 2 fs through network

From: Thierry ITTY (thierry.itty_at_besancon.org)
Date: 08/08/03

  • Next message: Mike Vanecek: "Deleting Zombie Process" 
    To: redhat-list@redhat.com
Date: Fri, 08 Aug 2003 17:51:30

    hi

    i have a machine w/ rh9xfs12 OOTB, 5 disks making a volume group, and a
    logical volume defined on the whole space. it will be a SMB and NFS file
    server.

    i have a second machine, same h/w, same s/w, on which i want to mirror this
    lv throught the network. i tried several systems but choosed DRBD (which
    makes a new device on the lv device, mirrors it on the net, and lets you
    mkfs whatever on the new device)

    each machine has 3 NICs, one for service (eth0), two for mirroring (eth1
    and eth2) actually enslaved in a bond0 interface. they are all accton
    en1207f/tx w/ tulip driver.

    my problem is that during network load traffic stops between the 2 machines
    and it looks like some nic just got frozen. drbd doesn't handle well such
    problems and i must manually restart things, but sync goes from beginning
    again...

    I started with standard distro drivers, then got D Becker's original ones,
    nothing changed (but i didn't get "NETDEV WATCHDOG transmit timeout"
    messages any longer)
    I tried with crossover cables, but had many errors on the nics (said
    ifconfig) so i put switches between with straight cables, had only very few
    errors, but still got blocked after a while
    I'd really have this working, i know i'm very close...

    i'd appreciate any advice on how to bond 2 machines with a _reliable_
    network (in my case a 2x100 mbps aggregated link)

    the machines will handle 1 TB each, with one active and one backup (HA is
    not the main goal, just data redundancy) (ok so why not raid ? raid needs
    to fit in one single machine !!!)

    would coda or intermezzo be an interesting alternative (i first tried
    intermezzo, but i didn't get enthousiastic about it -- maybe i missed
    something ? -- and i'm not sure it is able to handle big or huge files or
    filesystems)

    tia 

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