• Trond Myklebust's avatar
    NFS: Add mount option 'softreval' · c74dfe97
    Trond Myklebust authored
    Add a mount option 'softreval' that allows attribute revalidation 'getattr'
    calls to time out, and causes them to fall back to using the cached
    attributes.
    The use case for this option is for ensuring that we can still (slowly)
    traverse paths and use cached information even when the server is down.
    Once the server comes back up again, the getattr calls start succeeding,
    and the caches will revalidate as usual.
    
    The 'softreval' mount option is automatically enabled if you have
    specified 'softerr'.  It can be turned off using the options
    'nosoftreval', or 'hard'.
    Signed-off-by: default avatarTrond Myklebust <trond.myklebust@hammerspace.com>
    Signed-off-by: default avatarAnna Schumaker <Anna.Schumaker@Netapp.com>
    c74dfe97
fs_context.c 36.1 KB