From 5751da80ecd57dfae9ad3c080b8c984605da47ec Mon Sep 17 00:00:00 2001
From: Alex Zhuravlev <bzzz@whamcloud.com>
Date: Thu, 6 Feb 2025 16:09:14 +0300
Subject: [PATCH] LU-17763 tests: use urandom in sanity/66

as zfs-2.2.6 compresses data by default and this breaks the test
using /dev/zero as a source.

Test-Parameters: trivial
Test-Parameters: fstype=zfs env=ONLY=66 testlist=sanity
Signed-off-by: Alex Zhuravlev <bzzz@whamcloud.com>
Change-Id: I6853c693e7cb560ae737025507e5377da82c787b
Reviewed-on: https://review.whamcloud.com/c/fs/lustre-release/+/57987
Tested-by: jenkins <devops@whamcloud.com>
Tested-by: Maloo <maloo@whamcloud.com>
Reviewed-by: James Simmons <jsimmons@infradead.org>
Reviewed-by: Timothy Day <timday@amazon.com>
Reviewed-by: Jian Yu <yujian@whamcloud.com>
Reviewed-by: Oleg Drokin <green@whamcloud.com>
---
 lustre/tests/sanity.sh | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/lustre/tests/sanity.sh b/lustre/tests/sanity.sh
index c4c008f..133458c 100755
--- a/lustre/tests/sanity.sh
+++ b/lustre/tests/sanity.sh
@@ -11244,7 +11244,7 @@ test_66() {
 	[ $PARALLEL == "yes" ] && skip "skip parallel run"
 
 	local COUNT=${COUNT:-8}
-	dd if=/dev/zero of=$DIR/f66 bs=1k count=$COUNT
+	dd if=/dev/urandom of=$DIR/f66 bs=1k count=$COUNT
 	sync; sync_all_data; sync; sync_all_data
 	cancel_lru_locks osc
 	local BLOCKS=$(ls -s --block-size=1k $DIR/f66 | awk '{ print $1 }')
-- 
1.8.3.1