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  • 1.  VM freezes when I copy big files to NFS disk

    Posted Aug 29, 2008 06:21 PM

    Hi,

    I'm running ESX 3.5 with VC 2.5. I use a Linux server as my NFS server.

    When I try to copy big files to my VM, it freezes and all the other applications running on it stop responding.

    Any ideas on what I can do to fix it?

    Thanks,

    Alex



  • 2.  RE: VM freezes when I copy big files to NFS disk

    Posted Aug 31, 2008 03:27 AM

    Do you have vmware tools installed?

    -KjB



  • 3.  RE: VM freezes when I copy big files to NFS disk

    Posted Sep 02, 2008 04:04 PM

    Yes, it has.

    VMware Tools for Windows Version 3.5.0, build 64607.

    Thanks,

    Alex



  • 4.  RE: VM freezes when I copy big files to NFS disk

    Posted Sep 02, 2008 06:35 PM

    Ok, is your NFS server a vm or physical? Are you using a windows NFS client? Is it SFU or some other NFS client? How large of a file, and does it freeze during the initial connection, or does it die after being connected and transferring for some time?

    -KjB



  • 5.  RE: VM freezes when I copy big files to NFS disk

    Posted Sep 02, 2008 08:34 PM

    NFS is a physical server running CentOS. I'm not running any NFS client on my Windows VM. But the storage of that VM is my NFS server.

    The file was 506MB and the VM freezes while it's transferring.

    Thanks again,

    Alex



  • 6.  RE: VM freezes when I copy big files to NFS disk

    Posted Sep 03, 2008 01:44 AM

    Is your NFS datastore storage running over the same pNIC as the virtual machine traffic? How many other vm's are on that same datastore?

    -KjB



  • 7.  RE: VM freezes when I copy big files to NFS disk

    Posted Sep 03, 2008 04:04 PM

    Yes, the NFS is on the same NIC. I have only 1 VM running on the datastore.

    Alex



  • 8.  RE: VM freezes when I copy big files to NFS disk

    Posted Sep 03, 2008 11:12 PM

    Then that me the problem. You may start bursting on the NIC for your datastore, trying to keep up with the file transfer. Have you watched the performance tab on your host to see what the network utilization is like? Also, I'm assuming you are running at GigE, and have you made sure that you are connected at 1000Full if you are?

    If at all possible, I would separate the data traffic from the storage traffic.

    -KjB



  • 9.  RE: VM freezes when I copy big files to NFS disk

    Posted Sep 04, 2008 10:34 PM

    Thanks,

    I'll have to work on that. I'll let you in case I continue having problems afterwards.

    Alex