sysutils/zpool-iostat-viz: add new port

This port displays ZPOOL latency values in a more intiitive form than
available from "zpool iostat -r".

I have added some functionality and a man-page, which I'll offer to
the original author for inclusion in the official version.

1 files changed, 49 insertions, 0 deletions

diff --git a/sysutils/zpool-iostat-viz/files/patch-zpool-iostat-viz b/sysutils/zpool-iostat-viz/files/patch-zpool-iostat-viz
new file mode 100644
index 000000000000..2e696b6e5f9c
--- /dev/null
+++ b/sysutils/zpool-iostat-viz/files/patch-zpool-iostat-viz
@@ -0,0 +1,49 @@
+--- zpool-iostat-viz.orig	2021-11-06 15:43:57 UTC
++++ zpool-iostat-viz
+@@ -19,7 +19,10 @@ import sys
+ EMPTY_COLORS = (238, 8)
+ EMPTY_CHAR = "|"
+ PALETTES = list(range(start, end+(second-start), second-start) for second, start, end in ((63, 27, 207), (87, 51, 231), (116, 123, 88), (220, 226, 196), (224, 231, 196), (80, 51, 196), (77, 40, 225), (225, 231, 201), (243, 240, 255), (227, 226, 231), (27, 21, 51)))
+-DISPLAY_CHARS = ".abcdefghijklmnopqrstuvwxyz^"
++DISPLAY_CHARS_LETTERS = ".abcdefghijklmnopqrstuvwxyz^"
++DISPLAY_CHARS_DIGITS = ".0123456789#"
++DISPLAY_CHARS_SYMBOLS = " .:;*#"
++DISPLAY_CHARS = DISPLAY_CHARS_LETTERS
+ DIFFL_CLOCK_CHARS = "╷╴╵╶"
+ 
+ DIFFL_STAT_MEMORY = 5
+@@ -219,6 +222,13 @@ def render_stats(window, transform, should_show_differ
+         elif in_key == curses.KEY_DOWN:
+             if diffl_stat_interval_index > 0:
+                 diffl_stat_interval_index -= 1
++        elif in_key == ord('d'):
++            should_show_differential = not should_show_differential
++        elif in_key == ord('m'):
++            if transform == stats_as_device_centric:
++                transform = stats_as_measurement_centric
++            else:
++                transform = stats_as_device_centric
+         elif in_key == ord('q') or in_key == ord('x') or in_key == 27:
+             return
+         current += len(stats)
+@@ -256,6 +266,8 @@ if __name__ == "__main__":
+         arg_parser.add_argument("--pal-count", "--pc", action="store", metavar="P", default="0", help="palette for bucket populations")
+         arg_parser.add_argument("parts", metavar="pool/vdev", nargs="*", help="Pools or vdevs to display")
+         arg_parser.add_argument("--help-colors", action="store_true", help="see color palettes available")
++        arg_parser.add_argument("--digits", action="store_true", help="use digits instead of letters")
++        arg_parser.add_argument("--symbols", action="store_true", help="use digits instead of letters")
+ 
+         parsed_args = vars(arg_parser.parse_args())
+ 
+@@ -276,6 +288,11 @@ if __name__ == "__main__":
+                 print()
+             sys.exit(0)
+ 
++        if parsed_args["digits"]:
++            DISPLAY_CHARS = DISPLAY_CHARS_DIGITS
++        if parsed_args["symbols"]:
++            DISPLAY_CHARS = DISPLAY_CHARS_SYMBOLS
++
+         curses.wrapper(lambda window: main(window, parsed_args["diff"], parsed_args["parts"], parsed_args["file"], parsed_args["by"] or "m"))
+     except subprocess.CalledProcessError as exc:
+         print("I couldn't get your pool information. Make sure you have 'zpool' program and specify your pool correctly.")