From e538ec68a54ee8658f32d604bd1344dd82134e7e Mon Sep 17 00:00:00 2001
From: Patrick Farrell <pfarrell@whamcloud.com>
Date: Fri, 29 Dec 2023 15:10:58 -0500
Subject: [PATCH] EX-7601 tests: add mmap write test

This improves the existing mmap test to test mmap writing
as well as mmap reading.

Test-Parameters: trivial
Test-Parameters: testlist=sanity-compr env=ONLY="1003",ONLY_REPEAT=10
Signed-off-by: Patrick Farrell <pfarrell@whamcloud.com>
Change-Id: I81840c7bbbefbc5c3bae6b270c2d94297a254d19
Reviewed-on: https://review.whamcloud.com/c/ex/lustre-release/+/53307
Reviewed-by: Artem Blagodarenko <ablagodarenko@ddn.com>
Reviewed-by: Andreas Dilger <adilger@whamcloud.com>
Tested-by: jenkins <devops@whamcloud.com>
Tested-by: Maloo <maloo@whamcloud.com>
---
 lustre/tests/sanity-compr.sh | 43 ++++++++++++++++++++++++++++++++-----------
 1 file changed, 32 insertions(+), 11 deletions(-)

diff --git a/lustre/tests/sanity-compr.sh b/lustre/tests/sanity-compr.sh
index d971c89..6112f57 100644
--- a/lustre/tests/sanity-compr.sh
+++ b/lustre/tests/sanity-compr.sh
@@ -442,32 +442,53 @@ test_1003() {
 		echo "Compression, using ${chunksize}K chunksize"
 		$LFS setstripe -E -1 -Z lz4:0 --compress-chunk="$chunksize" "$tf" ||
 			error "setstripe on $tf failed, chunsksize $chunksize"
+		$LFS setstripe -E -1 -Z lz4:0 --compress-chunk="$chunksize" "$tf.2" ||
+			error "setstripe on $tf.2 failed, chunsksize ${chunksize}K"
 
-		dd if=$source bs=1M of=$tf oflag=direct ||
-			error "copy to create $tf failed"
-		flush_and_compare $source $tf "(0)"
+		mmap_copy_file -b $blocksize $source $tf ||
+			error "mmap file copy failed (0)"
 
-		# Copy from compressed file to non-compressed file
-		# (test reading)
+		flush_and_compare $source $tf "(1)"
+
+		# Test partial overwrite by copying a random 50% of the file
+		# This overwrites *parts* of the previously copied file
+		mmap_copy_file -p 50 -b $blocksize $source $tf ||
+			error "mmap file copy failed (2)"
+
+		flush_and_compare $source $tf "(3)"
+
+		# Copy from one compressed layout to another
 		mmap_copy_file -b $blocksize $tf $tf.2 ||
-			error "mmap file copy failed (1)"
+			error "mmap file copy failed (4)"
+
+		flush_and_compare $source $tf.2 "(5)"
 
-		flush_and_compare $source $tf.2 "(2)"
+		# Create a secondary copy of the source on a non-lustre fs
+		cp $source $source.2
+
+		# Partial overwrite with source compressed (tests reading)
+		mmap_copy_file -p 50 -b $blocksize $tf $source.2 ||
+			error "mmap file copy failed (6)"
+
+		flush_and_compare $source $source.2 "(7)"
 
 		rm -f $tf.2
 		rm -f $tf.3
 
-		# Test reading again by copying random chunks totalling 50% of
+		$LFS setstripe -E -1 -Z lz4:0 --compress-chunk="$chunksize" "$tf.2" ||
+			error "setstripe on $tf.2 failed, chunsksize ${chunksize}K"
+
+		# Test again by copying random chunks totalling 50% of
 		# file size (but copies are at random offsets)
 		# We seed the random copy and copy from the original source,
 		# then repeat the random copy from the compressed file with the
 		# same seed and compare those two
 		mmap_copy_file -s $seed -p 50 -b $blocksize $source $tf.2 ||
-			error "mmap file copy failed (3)"
+			error "mmap file copy failed (8)"
 		mmap_copy_file -s $seed -p 50 -b $blocksize $tf $tf.3 ||
-			error "mmap file copy failed (4)"
+			error "mmap file copy failed (9)"
 
-		flush_and_compare $tf.2 $tf.3 "(5)"
+		flush_and_compare $tf.2 $tf.3 "(10)"
 	done
 	done
 }
-- 
1.8.3.1