• Trond Myklebust's avatar
    NFS: Fix flexfiles read failover · 563c53e7
    Trond Myklebust authored
    The current mirrored read failover code is correctly resetting the mirror
    index between failed reads, however it is not able to actually flip the
    RPC call over to the next RPC client.
    The end result is that we keep resending the RPC call to the same client
    over and over.
    
    The fix is to use the pnfs_read_resend_pnfs() mechanism to schedule a
    new RPC call, but we need to add the ability to pass in a mirror
    index so that we always retry the next mirror in the list.
    
    Fixes: 166bd5b8 ("pNFS/flexfiles: Fix layoutstats handling during read failovers")
    Signed-off-by: default avatarTrond Myklebust <trond.myklebust@hammerspace.com>
    563c53e7
flexfilelayout.c 66.1 KB