• Christoph Hellwig's avatar
    pnfs/blocklayout: in-kernel GETDEVICEINFO XDR parsing · 5c83746a
    Christoph Hellwig authored
    This patches moves parsing of the GETDEVICEINFO XDR to kernel space, as well
    as the management of complex devices.  The reason for that is we might have
    multiple outstanding complex devices after a NOTIFY_DEVICEID4_CHANGE, which
    device mapper or md can't handle as they claim devices exclusively.
    
    But as is turns out simple striping / concatenation is fairly trivial to
    implement anyway, so we make our life simpler by reducing the reliance
    on blkmapd.  For now we still use blkmapd by feeding it synthetic SIMPLE
    device XDR to translate device signatures to device numbers, but in the
    long runs I have plans to eliminate it entirely.
    Signed-off-by: default avatarChristoph Hellwig <hch@lst.de>
    Signed-off-by: default avatarTrond Myklebust <trond.myklebust@primarydata.com>
    5c83746a
blocklayout.h 5.86 KB