Without any more information this post is just bullshit. For example, it's not documented how the flushing has been done. On Linux, even issuing 'sync' is not e

Without any more information this post is just bullshit. For example, it's not documented how the flushing has been done. On Linux, even issuing 'sync' is not enough: https://unix.stackexchange.com/questions/98568/difference-between-blockdev-flushbufs-and-sync-on-linux https://unix.stackexchange.com/questions/98568/difference-be... The bottom answer especially states that "blockdev --flushbufs may still be required if there is a large write cache and you're disconnecting the device immediately after" The hpdarm utility has a parameter for syncing and flushing device buffers themselves. Seems like all three should be done for a complete flush at all levels.