fsx has a closeopen option where it will close and then re-open the
file. This is handy, but what is really more useful is to drop the file
from cache completely, so add a drop_caches into this operation so that
the file is read back completely from disk to be really evil.
Signed-off-by: Josef Bacik <josef@xxxxxxxxxxxxxx>
---
ltp/fsx.c | 4 ++++
1 file changed, 4 insertions(+)
diff --git a/ltp/fsx.c b/ltp/fsx.c
index c74b13c2..e519367b 100644
--- a/ltp/fsx.c
+++ b/ltp/fsx.c
@@ -1778,6 +1778,10 @@ docloseopen(void)
prterr("docloseopen: close");
report_failure(180);
}
+ if (system("echo 3 > /proc/sys/vm/drop_caches")) {
+ prterr("docloseopen: drop_caches");
+ report_failure(213);
+ }
fd = open(fname, O_RDWR|o_direct, 0);
if (fd < 0) {
prterr("docloseopen: open");
--
2.23.0
