From: Sebastien GODARD <sysstat@users.noreply.github.com>
Date: Mon, 22 Jan 2018 16:06:21 +0000 (+0100)
Subject: iostat: Refresh device list properly
X-Git-Tag: v11.7.2~37
X-Git-Url: https://granicus.if.org/sourcecode?a=commitdiff_plain;h=141443c8130ea80f920f58df8f2f5642b934c29b;p=sysstat

iostat: Refresh device list properly

When running iostat to monitor disk activity,
disconnecting a USB drive from the system then reconnecting another one
didn't make the new one appear on the list.
This patch fixes the problem.

Reported-by: Robert Hoffmann <robert@noreply.servermasters.com>
Signed-off-by: Sebastien GODARD <sysstat@users.noreply.github.com>
---

diff --git a/iostat.c b/iostat.c
index 649a502..a1ec4f2 100644
--- a/iostat.c
+++ b/iostat.c
@@ -463,6 +463,11 @@ void save_stats(char *name, int curr, void *st_io, int iodev_nr,
 		st_hdr_iodev_i = st_hdr_iodev + i;
 		if (st_hdr_iodev_i->status == DISK_UNREGISTERED) {
 			st_hdr_iodev_i->status = DISK_REGISTERED;
+			if (st_hdr_iodev_i->used == FALSE) {
+				st_iodev_i = st_iodev[!curr] + i;
+				memset(st_iodev_i, 0, IO_STATS_SIZE);
+				st_hdr_iodev_i->used = TRUE;
+			}
 		}
 		st_iodev_i = st_iodev[curr] + i;
 		*st_iodev_i = *((struct io_stats *) st_io);