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Hi All, i'm experiencing some strange behavior (at least for me) of my NFS server. In few words I have a server that exposes a directory via NFS and a ...
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  1. #1
    Just Joined!
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    Aug 2011
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    Copies over NFS and buffer issue


    Hi All,
    i'm experiencing some strange behavior (at least for me) of my NFS server.

    In few words I have a server that exposes a directory via NFS and a client that mount it.
    I tested a simple copy from the client to the exposed directory of a file of 2GB and i see that on the server the file is created pretty soon, then no byte is written for a while (checking with ls -la), then the size increases from 0 to something like 8MB, then after a while to 12MB and so on....clearly with some buffer since it doesn't increase "linearly".

    This is how the directory is exported:
    # exportfs -v
    /nfs/dir my-client(rw,async,wdelay,root_squash,no_subtree_chec k,fsid=0,anonuid=65534,anongid=65534)


    And in the fstab client file i have:
    server:/ /nfs/dir nfs4 rw,rsize=32768,wsize=32768,intr 0 0

    Is there any option to remove that buffered behaviour ?

    Thanks in advance
    Ste

  2. #2
    Linux Guru Lakshmipathi's Avatar
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    may be checkout options given here NFS for clusters

    and noac disables all caching.
    First they ignore you,Then they laugh at you,Then they fight with you,Then you win. - M.K.Gandhi
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