bug-1728770-pass-xattrs.t: force re-read disk contents

The test wants to corrupt a disk, but in some cases the data that is being corrupted is alread cached, so the damaged data is never seen by the kernel. This patch forces a drop of the caches to ensure that the corrupted data is read and the error is triggered. Updates: gluster#4020 Signed-off-by: Xavi Hernandez <[email protected]>
kadalu · Mar 22, 2023 · 6dec623 · 6dec623
1 parent e7ccdc4
commit 6dec623
Showing 1 changed file with 2 additions and 2 deletions.
diff --git a/tests/bugs/replicate/bug-1728770-pass-xattrs.t b/tests/bugs/replicate/bug-1728770-pass-xattrs.t
@@ -32,9 +32,9 @@ TEST $CLI volume set $V0 health-check-interval 1000;
 TEST $CLI volume start $V0;
 
 TEST $GFS --volfile-server=$H0 --volfile-id=$V0 $M0;
-#corrupt last disk
+# Corrupt last disk and drop the caches to force an error
 dd if=/dev/urandom of=/dev/mapper/${LVM_PREFIX}_vg_6-brick_lvm bs=512K count=200 status=progress && sync
-
+echo 3 >/proc/sys/vm/drop_caches
 
 # Test the disk is now returning EIO for touch and ls
 EXPECT_WITHIN $DISK_FAIL_TIMEOUT "^1$" fop_on_bad_disk "$L6"