linux下监控是否有IO

linux下监控是否有IO

JDU:/host-001e67a8d50b /log/today # inotifywait -h
inotifywait 3.14
Wait for a particular event on a file or set of files.
Usage: inotifywait [ options ] file1 [ file2 ] [ file3 ] [ ... ]
Options:
    -h|--help       Show this help text.
    @<file>           Exclude the specified file from being watched.
    --exclude <pattern>
                    Exclude all events on files matching the
                    extended regular expression <pattern>.
    --excludei <pattern>
                    Like --exclude but case insensitive.
    -m|--monitor    Keep listening for events forever.  Without
                    this option, inotifywait will exit after one
                    event is received.
    -d|--daemon     Same as --monitor, except run in the background
                    logging events to a file specified by --outfile.
                    Implies --syslog.
    -r|--recursive  Watch directories recursively.
    --fromfile <file>
                    Read files to watch from <file> or `-' for stdin.
    -o|--outfile <file>
                        Print events to <file> rather than stdout.
    -s|--syslog     Send errors to syslog rather than stderr.
    -q|--quiet      Print less (only print events).
    -qq             Print nothing (not even events).
    --format <fmt>    Print using a specified printf-like format
                    string; read the man page for more details.
    --timefmt <fmt>   strftime-compatible format string for use with
                    %T in --format string.
    -c|--csv        Print events in CSV format.
        -t|--timeout <seconds>
                    When listening for a single event, time out after
                    waiting for an event  for <seconds> seconds.
                    If <seconds> is 0, inotifywait will never time out.
    -e|--event <event1> [ -e|--event  <event2> ... ]
        Listen for specific event(s).  If omitted, all events are
        listened for.
        Exit status:
    0  -  An event you asked to watch for was received.
    1  -  An event you did not ask to watch for was received
    2  -  The --timeout option was given and no events occurred
          in the specified interval of time.
Events:
    access      file or directory contents were read
    modify      file or directory contents were written
    attrib      file or directory attributes changed
        close_write file or directory closed, after being opened in writable mode
    close_nowrite   file or directory closed, after being opened in read-only mode
        close       file or directory closed, regardless of read/write mode
    open        file or directory opened
    moved_to    file or directory moved to watched directory
    moved_from  file or directory moved from watched directory
        move        file or directory moved to or from watched directory
    create      file or directory created within watched directory
    delete      file or directory deleted within watched directory
    delete_self file or directory was deleted
    unmount     file system containing file or directory unmounted