Regarding fio version fio-2.1.9-17-gd9b1 (after April 11, 2014):
A recent change (5e1d8745471d1f315113c5c3fd8b93809d9ddff9) caused stdout
to be closed when -o was specified, which prevents ETA output from showing
up on stdout even when, e.g., json is being saved in the file.
This patch continues to close f_out so that there is no leak if multiple -o
options are specified, but doesn't close stdout. Hence, ETA works again
when it should.
diff --git a/init.c b/init.c
index 4c5a8dd..a546861 100644
--- a/init.c
+++ b/init.c
@@ -1739,7 +1739,7 @@ int parse_cmd_line(int argc, char *argv[], int
client_type)
write_bw_log = 1;
break;
case 'o':
- if (f_out)
+ if (f_out && f_out != stdout)
fclose(f_out);
--
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