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From 9b1cfdf3f35a028aafffb01d667cdaf304e678c7 Mon Sep 17 00:00:00 2001
From: Kevin Wolf <kwolf@redhat.com>
Date: Wed, 4 Sep 2013 13:16:05 +0200
Subject: [PATCH 36/38] qemu-iotests: Fixed test case 026

Message-id: <1379499002-5231-5-git-send-email-mreitz@redhat.com>
Patchwork-id: 54435
O-Subject: [RHEL-7.0 qemu-kvm PATCH 4/6] qemu-iotests: Fixed test case 026
Bugzilla: 1006959
RH-Acked-by: Markus Armbruster <armbru@redhat.com>
RH-Acked-by: Fam Zheng <famz@redhat.com>
RH-Acked-by: Kevin Wolf <kwolf@redhat.com>

BZ: 1006959

The reference output for test case 026 hasn't been updated in a long
time and it's one of the "known failing" cases. This patch updates the
reference output so that unintentional changes can be reliably detected
again.

The problem with this test case is that it produces different output
depending on whether -nocache is used or not. The solution of this patch
is to actually have two different reference outputs. If nnn.out.nocache
exists, it is used as the reference output for -nocache; otherwise,
nnn.out stays valid for both cases.

Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
(cherry picked from commit 8f94b077877151de93a63c73f796897309568ddb)

Signed-off-by: Max Reitz <mreitz@redhat.com>
---
 tests/qemu-iotests/026.out         |   28 +-
 tests/qemu-iotests/026.out.nocache |  626 ++++++++++++++++++++++++++++++++++++
 tests/qemu-iotests/check           |   12 +-
 3 files changed, 649 insertions(+), 17 deletions(-)
 create mode 100644 tests/qemu-iotests/026.out.nocache

diff --git a/tests/qemu-iotests/026.out b/tests/qemu-iotests/026.out
index fb4f20e..0764389 100644
--- a/tests/qemu-iotests/026.out
+++ b/tests/qemu-iotests/026.out
@@ -126,62 +126,64 @@ Formatting 'TEST_DIR/t.IMGFMT', fmt=IMGFMT size=1073741824
 Event: l2_update; errno: 5; imm: off; once: on; write 
 write failed: Input/output error
 
-128 leaked clusters were found on the image.
+127 leaked clusters were found on the image.
 This means waste of disk space, but no harm to data.
 Formatting 'TEST_DIR/t.IMGFMT', fmt=IMGFMT size=1073741824 
 
 Event: l2_update; errno: 5; imm: off; once: on; write -b
 write failed: Input/output error
 
-128 leaked clusters were found on the image.
+127 leaked clusters were found on the image.
 This means waste of disk space, but no harm to data.
 Formatting 'TEST_DIR/t.IMGFMT', fmt=IMGFMT size=1073741824 
 
 Event: l2_update; errno: 5; imm: off; once: off; write 
 write failed: Input/output error
 
-128 leaked clusters were found on the image.
+127 leaked clusters were found on the image.
 This means waste of disk space, but no harm to data.
 Formatting 'TEST_DIR/t.IMGFMT', fmt=IMGFMT size=1073741824 
 
 Event: l2_update; errno: 5; imm: off; once: off; write -b
 write failed: Input/output error
 
-128 leaked clusters were found on the image.
+127 leaked clusters were found on the image.
 This means waste of disk space, but no harm to data.
 Formatting 'TEST_DIR/t.IMGFMT', fmt=IMGFMT size=1073741824 
 
 Event: l2_update; errno: 28; imm: off; once: on; write 
 write failed: No space left on device
 
-128 leaked clusters were found on the image.
+127 leaked clusters were found on the image.
 This means waste of disk space, but no harm to data.
 Formatting 'TEST_DIR/t.IMGFMT', fmt=IMGFMT size=1073741824 
 
 Event: l2_update; errno: 28; imm: off; once: on; write -b
 write failed: No space left on device
 
-128 leaked clusters were found on the image.
+127 leaked clusters were found on the image.
 This means waste of disk space, but no harm to data.
 Formatting 'TEST_DIR/t.IMGFMT', fmt=IMGFMT size=1073741824 
 
 Event: l2_update; errno: 28; imm: off; once: off; write 
 write failed: No space left on device
 
-128 leaked clusters were found on the image.
+127 leaked clusters were found on the image.
 This means waste of disk space, but no harm to data.
 Formatting 'TEST_DIR/t.IMGFMT', fmt=IMGFMT size=1073741824 
 
 Event: l2_update; errno: 28; imm: off; once: off; write -b
 write failed: No space left on device
 
-128 leaked clusters were found on the image.
+127 leaked clusters were found on the image.
 This means waste of disk space, but no harm to data.
 Formatting 'TEST_DIR/t.IMGFMT', fmt=IMGFMT size=1073741824 
 
 Event: l2_alloc.write; errno: 5; imm: off; once: on; write 
 write failed: Input/output error
-No errors were found on the image.
+
+1 leaked clusters were found on the image.
+This means waste of disk space, but no harm to data.
 Formatting 'TEST_DIR/t.IMGFMT', fmt=IMGFMT size=1073741824 
 
 Event: l2_alloc.write; errno: 5; imm: off; once: on; write -b
@@ -205,7 +207,9 @@ Formatting 'TEST_DIR/t.IMGFMT', fmt=IMGFMT size=1073741824
 
 Event: l2_alloc.write; errno: 28; imm: off; once: on; write 
 write failed: No space left on device
-No errors were found on the image.
+
+1 leaked clusters were found on the image.
+This means waste of disk space, but no harm to data.
 Formatting 'TEST_DIR/t.IMGFMT', fmt=IMGFMT size=1073741824 
 
 Event: l2_alloc.write; errno: 28; imm: off; once: on; write -b
@@ -575,7 +579,6 @@ No errors were found on the image.
 Formatting 'TEST_DIR/t.IMGFMT', fmt=IMGFMT size=1073741824 
 
 Event: l1_grow.write_table; errno: 5; imm: off; once: off
-qcow2_free_clusters failed: Input/output error
 write failed: Input/output error
 No errors were found on the image.
 Formatting 'TEST_DIR/t.IMGFMT', fmt=IMGFMT size=1073741824 
@@ -586,7 +589,6 @@ No errors were found on the image.
 Formatting 'TEST_DIR/t.IMGFMT', fmt=IMGFMT size=1073741824 
 
 Event: l1_grow.write_table; errno: 28; imm: off; once: off
-qcow2_free_clusters failed: No space left on device
 write failed: No space left on device
 No errors were found on the image.
 Formatting 'TEST_DIR/t.IMGFMT', fmt=IMGFMT size=1073741824 
@@ -597,7 +599,6 @@ No errors were found on the image.
 Formatting 'TEST_DIR/t.IMGFMT', fmt=IMGFMT size=1073741824 
 
 Event: l1_grow.activate_table; errno: 5; imm: off; once: off
-qcow2_free_clusters failed: Input/output error
 write failed: Input/output error
 
 96 leaked clusters were found on the image.
@@ -610,7 +611,6 @@ No errors were found on the image.
 Formatting 'TEST_DIR/t.IMGFMT', fmt=IMGFMT size=1073741824 
 
 Event: l1_grow.activate_table; errno: 28; imm: off; once: off
-qcow2_free_clusters failed: No space left on device
 write failed: No space left on device
 
 96 leaked clusters were found on the image.
diff --git a/tests/qemu-iotests/026.out.nocache b/tests/qemu-iotests/026.out.nocache
new file mode 100644
index 0000000..33bad0d
--- /dev/null
+++ b/tests/qemu-iotests/026.out.nocache
@@ -0,0 +1,626 @@
+QA output created by 026
+Errors while writing 128 kB
+
+Formatting 'TEST_DIR/t.IMGFMT', fmt=IMGFMT size=1073741824 
+
+Event: l1_update; errno: 5; imm: off; once: on; write 
+write failed: Input/output error
+
+1 leaked clusters were found on the image.
+This means waste of disk space, but no harm to data.
+Formatting 'TEST_DIR/t.IMGFMT', fmt=IMGFMT size=1073741824 
+
+Event: l1_update; errno: 5; imm: off; once: on; write -b
+write failed: Input/output error
+
+1 leaked clusters were found on the image.
+This means waste of disk space, but no harm to data.
+Formatting 'TEST_DIR/t.IMGFMT', fmt=IMGFMT size=1073741824 
+
+Event: l1_update; errno: 5; imm: off; once: off; write 
+write failed: Input/output error
+
+1 leaked clusters were found on the image.
+This means waste of disk space, but no harm to data.
+Formatting 'TEST_DIR/t.IMGFMT', fmt=IMGFMT size=1073741824 
+
+Event: l1_update; errno: 5; imm: off; once: off; write -b
+write failed: Input/output error
+
+1 leaked clusters were found on the image.
+This means waste of disk space, but no harm to data.
+Formatting 'TEST_DIR/t.IMGFMT', fmt=IMGFMT size=1073741824 
+
+Event: l1_update; errno: 28; imm: off; once: on; write 
+write failed: No space left on device
+
+1 leaked clusters were found on the image.
+This means waste of disk space, but no harm to data.
+Formatting 'TEST_DIR/t.IMGFMT', fmt=IMGFMT size=1073741824 
+
+Event: l1_update; errno: 28; imm: off; once: on; write -b
+write failed: No space left on device
+
+1 leaked clusters were found on the image.
+This means waste of disk space, but no harm to data.
+Formatting 'TEST_DIR/t.IMGFMT', fmt=IMGFMT size=1073741824 
+
+Event: l1_update; errno: 28; imm: off; once: off; write 
+write failed: No space left on device
+
+1 leaked clusters were found on the image.
+This means waste of disk space, but no harm to data.
+Formatting 'TEST_DIR/t.IMGFMT', fmt=IMGFMT size=1073741824 
+
+Event: l1_update; errno: 28; imm: off; once: off; write -b
+write failed: No space left on device
+
+1 leaked clusters were found on the image.
+This means waste of disk space, but no harm to data.
+Formatting 'TEST_DIR/t.IMGFMT', fmt=IMGFMT size=1073741824 
+
+Event: l2_load; errno: 5; imm: off; once: on; write 
+wrote 131072/131072 bytes at offset 0
+128 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
+write failed: Input/output error
+read failed: Input/output error
+No errors were found on the image.
+Formatting 'TEST_DIR/t.IMGFMT', fmt=IMGFMT size=1073741824 
+
+Event: l2_load; errno: 5; imm: off; once: on; write -b
+wrote 131072/131072 bytes at offset 0
+128 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
+write failed: Input/output error
+read failed: Input/output error
+No errors were found on the image.
+Formatting 'TEST_DIR/t.IMGFMT', fmt=IMGFMT size=1073741824 
+
+Event: l2_load; errno: 5; imm: off; once: off; write 
+wrote 131072/131072 bytes at offset 0
+128 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
+write failed: Input/output error
+read failed: Input/output error
+No errors were found on the image.
+Formatting 'TEST_DIR/t.IMGFMT', fmt=IMGFMT size=1073741824 
+
+Event: l2_load; errno: 5; imm: off; once: off; write -b
+wrote 131072/131072 bytes at offset 0
+128 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
+write failed: Input/output error
+read failed: Input/output error
+No errors were found on the image.
+Formatting 'TEST_DIR/t.IMGFMT', fmt=IMGFMT size=1073741824 
+
+Event: l2_load; errno: 28; imm: off; once: on; write 
+wrote 131072/131072 bytes at offset 0
+128 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
+write failed: No space left on device
+read failed: No space left on device
+No errors were found on the image.
+Formatting 'TEST_DIR/t.IMGFMT', fmt=IMGFMT size=1073741824 
+
+Event: l2_load; errno: 28; imm: off; once: on; write -b
+wrote 131072/131072 bytes at offset 0
+128 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
+write failed: No space left on device
+read failed: No space left on device
+No errors were found on the image.
+Formatting 'TEST_DIR/t.IMGFMT', fmt=IMGFMT size=1073741824 
+
+Event: l2_load; errno: 28; imm: off; once: off; write 
+wrote 131072/131072 bytes at offset 0
+128 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
+write failed: No space left on device
+read failed: No space left on device
+No errors were found on the image.
+Formatting 'TEST_DIR/t.IMGFMT', fmt=IMGFMT size=1073741824 
+
+Event: l2_load; errno: 28; imm: off; once: off; write -b
+wrote 131072/131072 bytes at offset 0
+128 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
+write failed: No space left on device
+read failed: No space left on device
+No errors were found on the image.
+Formatting 'TEST_DIR/t.IMGFMT', fmt=IMGFMT size=1073741824 
+
+Event: l2_update; errno: 5; imm: off; once: on; write 
+wrote 131072/131072 bytes at offset 0
+128 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
+
+127 leaked clusters were found on the image.
+This means waste of disk space, but no harm to data.
+Formatting 'TEST_DIR/t.IMGFMT', fmt=IMGFMT size=1073741824 
+
+Event: l2_update; errno: 5; imm: off; once: on; write -b
+wrote 131072/131072 bytes at offset 0
+128 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
+
+127 leaked clusters were found on the image.
+This means waste of disk space, but no harm to data.
+Formatting 'TEST_DIR/t.IMGFMT', fmt=IMGFMT size=1073741824 
+
+Event: l2_update; errno: 5; imm: off; once: off; write 
+wrote 131072/131072 bytes at offset 0
+128 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
+
+127 leaked clusters were found on the image.
+This means waste of disk space, but no harm to data.
+Formatting 'TEST_DIR/t.IMGFMT', fmt=IMGFMT size=1073741824 
+
+Event: l2_update; errno: 5; imm: off; once: off; write -b
+wrote 131072/131072 bytes at offset 0
+128 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
+
+127 leaked clusters were found on the image.
+This means waste of disk space, but no harm to data.
+Formatting 'TEST_DIR/t.IMGFMT', fmt=IMGFMT size=1073741824 
+
+Event: l2_update; errno: 28; imm: off; once: on; write 
+wrote 131072/131072 bytes at offset 0
+128 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
+
+127 leaked clusters were found on the image.
+This means waste of disk space, but no harm to data.
+Formatting 'TEST_DIR/t.IMGFMT', fmt=IMGFMT size=1073741824 
+
+Event: l2_update; errno: 28; imm: off; once: on; write -b
+wrote 131072/131072 bytes at offset 0
+128 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
+
+127 leaked clusters were found on the image.
+This means waste of disk space, but no harm to data.
+Formatting 'TEST_DIR/t.IMGFMT', fmt=IMGFMT size=1073741824 
+
+Event: l2_update; errno: 28; imm: off; once: off; write 
+wrote 131072/131072 bytes at offset 0
+128 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
+
+127 leaked clusters were found on the image.
+This means waste of disk space, but no harm to data.
+Formatting 'TEST_DIR/t.IMGFMT', fmt=IMGFMT size=1073741824 
+
+Event: l2_update; errno: 28; imm: off; once: off; write -b
+wrote 131072/131072 bytes at offset 0
+128 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
+
+127 leaked clusters were found on the image.
+This means waste of disk space, but no harm to data.
+Formatting 'TEST_DIR/t.IMGFMT', fmt=IMGFMT size=1073741824 
+
+Event: l2_alloc.write; errno: 5; imm: off; once: on; write 
+write failed: Input/output error
+
+1 leaked clusters were found on the image.
+This means waste of disk space, but no harm to data.
+Formatting 'TEST_DIR/t.IMGFMT', fmt=IMGFMT size=1073741824 
+
+Event: l2_alloc.write; errno: 5; imm: off; once: on; write -b
+write failed: Input/output error
+
+1 leaked clusters were found on the image.
+This means waste of disk space, but no harm to data.
+Formatting 'TEST_DIR/t.IMGFMT', fmt=IMGFMT size=1073741824 
+
+Event: l2_alloc.write; errno: 5; imm: off; once: off; write 
+write failed: Input/output error
+No errors were found on the image.
+Formatting 'TEST_DIR/t.IMGFMT', fmt=IMGFMT size=1073741824 
+
+Event: l2_alloc.write; errno: 5; imm: off; once: off; write -b
+write failed: Input/output error
+
+1 leaked clusters were found on the image.
+This means waste of disk space, but no harm to data.
+Formatting 'TEST_DIR/t.IMGFMT', fmt=IMGFMT size=1073741824 
+
+Event: l2_alloc.write; errno: 28; imm: off; once: on; write 
+write failed: No space left on device
+
+1 leaked clusters were found on the image.
+This means waste of disk space, but no harm to data.
+Formatting 'TEST_DIR/t.IMGFMT', fmt=IMGFMT size=1073741824 
+
+Event: l2_alloc.write; errno: 28; imm: off; once: on; write -b
+write failed: No space left on device
+
+1 leaked clusters were found on the image.
+This means waste of disk space, but no harm to data.
+Formatting 'TEST_DIR/t.IMGFMT', fmt=IMGFMT size=1073741824 
+
+Event: l2_alloc.write; errno: 28; imm: off; once: off; write 
+write failed: No space left on device
+No errors were found on the image.
+Formatting 'TEST_DIR/t.IMGFMT', fmt=IMGFMT size=1073741824 
+
+Event: l2_alloc.write; errno: 28; imm: off; once: off; write -b
+write failed: No space left on device
+
+1 leaked clusters were found on the image.
+This means waste of disk space, but no harm to data.
+Formatting 'TEST_DIR/t.IMGFMT', fmt=IMGFMT size=1073741824 
+
+Event: write_aio; errno: 5; imm: off; once: on; write 
+write failed: Input/output error
+No errors were found on the image.
+Formatting 'TEST_DIR/t.IMGFMT', fmt=IMGFMT size=1073741824 
+
+Event: write_aio; errno: 5; imm: off; once: on; write -b
+write failed: Input/output error
+No errors were found on the image.
+Formatting 'TEST_DIR/t.IMGFMT', fmt=IMGFMT size=1073741824 
+
+Event: write_aio; errno: 5; imm: off; once: off; write 
+write failed: Input/output error
+No errors were found on the image.
+Formatting 'TEST_DIR/t.IMGFMT', fmt=IMGFMT size=1073741824 
+
+Event: write_aio; errno: 5; imm: off; once: off; write -b
+write failed: Input/output error
+No errors were found on the image.
+Formatting 'TEST_DIR/t.IMGFMT', fmt=IMGFMT size=1073741824 
+
+Event: write_aio; errno: 28; imm: off; once: on; write 
+write failed: No space left on device
+No errors were found on the image.
+Formatting 'TEST_DIR/t.IMGFMT', fmt=IMGFMT size=1073741824 
+
+Event: write_aio; errno: 28; imm: off; once: on; write -b
+write failed: No space left on device
+No errors were found on the image.
+Formatting 'TEST_DIR/t.IMGFMT', fmt=IMGFMT size=1073741824 
+
+Event: write_aio; errno: 28; imm: off; once: off; write 
+write failed: No space left on device
+No errors were found on the image.
+Formatting 'TEST_DIR/t.IMGFMT', fmt=IMGFMT size=1073741824 
+
+Event: write_aio; errno: 28; imm: off; once: off; write -b
+write failed: No space left on device
+No errors were found on the image.
+Formatting 'TEST_DIR/t.IMGFMT', fmt=IMGFMT size=1073741824 
+
+Event: refblock_load; errno: 5; imm: off; once: on; write 
+write failed: Input/output error
+No errors were found on the image.
+Formatting 'TEST_DIR/t.IMGFMT', fmt=IMGFMT size=1073741824 
+
+Event: refblock_load; errno: 5; imm: off; once: on; write -b
+write failed: Input/output error
+No errors were found on the image.
+Formatting 'TEST_DIR/t.IMGFMT', fmt=IMGFMT size=1073741824 
+
+Event: refblock_load; errno: 5; imm: off; once: off; write 
+write failed: Input/output error
+No errors were found on the image.
+Formatting 'TEST_DIR/t.IMGFMT', fmt=IMGFMT size=1073741824 
+
+Event: refblock_load; errno: 5; imm: off; once: off; write -b
+write failed: Input/output error
+No errors were found on the image.
+Formatting 'TEST_DIR/t.IMGFMT', fmt=IMGFMT size=1073741824 
+
+Event: refblock_load; errno: 28; imm: off; once: on; write 
+write failed: No space left on device
+No errors were found on the image.
+Formatting 'TEST_DIR/t.IMGFMT', fmt=IMGFMT size=1073741824 
+
+Event: refblock_load; errno: 28; imm: off; once: on; write -b
+write failed: No space left on device
+No errors were found on the image.
+Formatting 'TEST_DIR/t.IMGFMT', fmt=IMGFMT size=1073741824 
+
+Event: refblock_load; errno: 28; imm: off; once: off; write 
+write failed: No space left on device
+No errors were found on the image.
+Formatting 'TEST_DIR/t.IMGFMT', fmt=IMGFMT size=1073741824 
+
+Event: refblock_load; errno: 28; imm: off; once: off; write -b
+write failed: No space left on device
+No errors were found on the image.
+Formatting 'TEST_DIR/t.IMGFMT', fmt=IMGFMT size=1073741824 
+
+Event: refblock_update_part; errno: 5; imm: off; once: on; write 
+write failed: Input/output error
+No errors were found on the image.
+Formatting 'TEST_DIR/t.IMGFMT', fmt=IMGFMT size=1073741824 
+
+Event: refblock_update_part; errno: 5; imm: off; once: on; write -b
+write failed: Input/output error
+No errors were found on the image.
+Formatting 'TEST_DIR/t.IMGFMT', fmt=IMGFMT size=1073741824 
+
+Event: refblock_update_part; errno: 5; imm: off; once: off; write 
+write failed: Input/output error
+No errors were found on the image.
+Formatting 'TEST_DIR/t.IMGFMT', fmt=IMGFMT size=1073741824 
+
+Event: refblock_update_part; errno: 5; imm: off; once: off; write -b
+write failed: Input/output error
+No errors were found on the image.
+Formatting 'TEST_DIR/t.IMGFMT', fmt=IMGFMT size=1073741824 
+
+Event: refblock_update_part; errno: 28; imm: off; once: on; write 
+write failed: No space left on device
+No errors were found on the image.
+Formatting 'TEST_DIR/t.IMGFMT', fmt=IMGFMT size=1073741824 
+
+Event: refblock_update_part; errno: 28; imm: off; once: on; write -b
+write failed: No space left on device
+No errors were found on the image.
+Formatting 'TEST_DIR/t.IMGFMT', fmt=IMGFMT size=1073741824 
+
+Event: refblock_update_part; errno: 28; imm: off; once: off; write 
+write failed: No space left on device
+No errors were found on the image.
+Formatting 'TEST_DIR/t.IMGFMT', fmt=IMGFMT size=1073741824 
+
+Event: refblock_update_part; errno: 28; imm: off; once: off; write -b
+write failed: No space left on device
+No errors were found on the image.
+Formatting 'TEST_DIR/t.IMGFMT', fmt=IMGFMT size=1073741824 
+
+Event: refblock_alloc; errno: 5; imm: off; once: on; write 
+write failed: Input/output error
+No errors were found on the image.
+Formatting 'TEST_DIR/t.IMGFMT', fmt=IMGFMT size=1073741824 
+
+Event: refblock_alloc; errno: 5; imm: off; once: on; write -b
+write failed: Input/output error
+No errors were found on the image.
+Formatting 'TEST_DIR/t.IMGFMT', fmt=IMGFMT size=1073741824 
+
+Event: refblock_alloc; errno: 5; imm: off; once: off; write 
+write failed: Input/output error
+No errors were found on the image.
+Formatting 'TEST_DIR/t.IMGFMT', fmt=IMGFMT size=1073741824 
+
+Event: refblock_alloc; errno: 5; imm: off; once: off; write -b
+write failed: Input/output error
+No errors were found on the image.
+Formatting 'TEST_DIR/t.IMGFMT', fmt=IMGFMT size=1073741824 
+
+Event: refblock_alloc; errno: 28; imm: off; once: on; write 
+write failed: No space left on device
+No errors were found on the image.
+Formatting 'TEST_DIR/t.IMGFMT', fmt=IMGFMT size=1073741824 
+
+Event: refblock_alloc; errno: 28; imm: off; once: on; write -b
+write failed: No space left on device
+No errors were found on the image.
+Formatting 'TEST_DIR/t.IMGFMT', fmt=IMGFMT size=1073741824 
+
+Event: refblock_alloc; errno: 28; imm: off; once: off; write 
+write failed: No space left on device
+No errors were found on the image.
+Formatting 'TEST_DIR/t.IMGFMT', fmt=IMGFMT size=1073741824 
+
+Event: refblock_alloc; errno: 28; imm: off; once: off; write -b
+write failed: No space left on device
+No errors were found on the image.
+Formatting 'TEST_DIR/t.IMGFMT', fmt=IMGFMT size=1073741824 
+
+Event: cluster_alloc; errno: 5; imm: off; once: on; write 
+write failed: Input/output error
+No errors were found on the image.
+Formatting 'TEST_DIR/t.IMGFMT', fmt=IMGFMT size=1073741824 
+
+Event: cluster_alloc; errno: 5; imm: off; once: on; write -b
+write failed: Input/output error
+No errors were found on the image.
+Formatting 'TEST_DIR/t.IMGFMT', fmt=IMGFMT size=1073741824 
+
+Event: cluster_alloc; errno: 5; imm: off; once: off; write 
+write failed: Input/output error
+No errors were found on the image.
+Formatting 'TEST_DIR/t.IMGFMT', fmt=IMGFMT size=1073741824 
+
+Event: cluster_alloc; errno: 5; imm: off; once: off; write -b
+write failed: Input/output error
+No errors were found on the image.
+Formatting 'TEST_DIR/t.IMGFMT', fmt=IMGFMT size=1073741824 
+
+Event: cluster_alloc; errno: 28; imm: off; once: on; write 
+write failed: No space left on device
+No errors were found on the image.
+Formatting 'TEST_DIR/t.IMGFMT', fmt=IMGFMT size=1073741824 
+
+Event: cluster_alloc; errno: 28; imm: off; once: on; write -b
+write failed: No space left on device
+No errors were found on the image.
+Formatting 'TEST_DIR/t.IMGFMT', fmt=IMGFMT size=1073741824 
+
+Event: cluster_alloc; errno: 28; imm: off; once: off; write 
+write failed: No space left on device
+No errors were found on the image.
+Formatting 'TEST_DIR/t.IMGFMT', fmt=IMGFMT size=1073741824 
+
+Event: cluster_alloc; errno: 28; imm: off; once: off; write -b
+write failed: No space left on device
+No errors were found on the image.
+
+=== Refcout table growth tests ===
+
+Formatting 'TEST_DIR/t.IMGFMT', fmt=IMGFMT size=1073741824 
+
+Event: refblock_alloc.hookup; errno: 28; imm: off; once: on; write 
+write failed: No space left on device
+No errors were found on the image.
+Formatting 'TEST_DIR/t.IMGFMT', fmt=IMGFMT size=1073741824 
+
+Event: refblock_alloc.hookup; errno: 28; imm: off; once: on; write -b
+write failed: No space left on device
+No errors were found on the image.
+Formatting 'TEST_DIR/t.IMGFMT', fmt=IMGFMT size=1073741824 
+
+Event: refblock_alloc.hookup; errno: 28; imm: off; once: off; write 
+write failed: No space left on device
+
+55 leaked clusters were found on the image.
+This means waste of disk space, but no harm to data.
+Formatting 'TEST_DIR/t.IMGFMT', fmt=IMGFMT size=1073741824 
+
+Event: refblock_alloc.hookup; errno: 28; imm: off; once: off; write -b
+write failed: No space left on device
+
+251 leaked clusters were found on the image.
+This means waste of disk space, but no harm to data.
+Formatting 'TEST_DIR/t.IMGFMT', fmt=IMGFMT size=1073741824 
+
+Event: refblock_alloc.write; errno: 28; imm: off; once: on; write 
+write failed: No space left on device
+No errors were found on the image.
+Formatting 'TEST_DIR/t.IMGFMT', fmt=IMGFMT size=1073741824 
+
+Event: refblock_alloc.write; errno: 28; imm: off; once: on; write -b
+write failed: No space left on device
+No errors were found on the image.
+Formatting 'TEST_DIR/t.IMGFMT', fmt=IMGFMT size=1073741824 
+
+Event: refblock_alloc.write; errno: 28; imm: off; once: off; write 
+write failed: No space left on device
+No errors were found on the image.
+Formatting 'TEST_DIR/t.IMGFMT', fmt=IMGFMT size=1073741824 
+
+Event: refblock_alloc.write; errno: 28; imm: off; once: off; write -b
+write failed: No space left on device
+No errors were found on the image.
+Formatting 'TEST_DIR/t.IMGFMT', fmt=IMGFMT size=1073741824 
+
+Event: refblock_alloc.write_blocks; errno: 28; imm: off; once: on; write 
+write failed: No space left on device
+No errors were found on the image.
+Formatting 'TEST_DIR/t.IMGFMT', fmt=IMGFMT size=1073741824 
+
+Event: refblock_alloc.write_blocks; errno: 28; imm: off; once: on; write -b
+write failed: No space left on device
+No errors were found on the image.
+Formatting 'TEST_DIR/t.IMGFMT', fmt=IMGFMT size=1073741824 
+
+Event: refblock_alloc.write_blocks; errno: 28; imm: off; once: off; write 
+write failed: No space left on device
+
+10 leaked clusters were found on the image.
+This means waste of disk space, but no harm to data.
+Formatting 'TEST_DIR/t.IMGFMT', fmt=IMGFMT size=1073741824 
+
+Event: refblock_alloc.write_blocks; errno: 28; imm: off; once: off; write -b
+write failed: No space left on device
+
+23 leaked clusters were found on the image.
+This means waste of disk space, but no harm to data.
+Formatting 'TEST_DIR/t.IMGFMT', fmt=IMGFMT size=1073741824 
+
+Event: refblock_alloc.write_table; errno: 28; imm: off; once: on; write 
+write failed: No space left on device
+No errors were found on the image.
+Formatting 'TEST_DIR/t.IMGFMT', fmt=IMGFMT size=1073741824 
+
+Event: refblock_alloc.write_table; errno: 28; imm: off; once: on; write -b
+write failed: No space left on device
+No errors were found on the image.
+Formatting 'TEST_DIR/t.IMGFMT', fmt=IMGFMT size=1073741824 
+
+Event: refblock_alloc.write_table; errno: 28; imm: off; once: off; write 
+write failed: No space left on device
+
+10 leaked clusters were found on the image.
+This means waste of disk space, but no harm to data.
+Formatting 'TEST_DIR/t.IMGFMT', fmt=IMGFMT size=1073741824 
+
+Event: refblock_alloc.write_table; errno: 28; imm: off; once: off; write -b
+write failed: No space left on device
+
+23 leaked clusters were found on the image.
+This means waste of disk space, but no harm to data.
+Formatting 'TEST_DIR/t.IMGFMT', fmt=IMGFMT size=1073741824 
+
+Event: refblock_alloc.switch_table; errno: 28; imm: off; once: on; write 
+write failed: No space left on device
+No errors were found on the image.
+Formatting 'TEST_DIR/t.IMGFMT', fmt=IMGFMT size=1073741824 
+
+Event: refblock_alloc.switch_table; errno: 28; imm: off; once: on; write -b
+write failed: No space left on device
+No errors were found on the image.
+Formatting 'TEST_DIR/t.IMGFMT', fmt=IMGFMT size=1073741824 
+
+Event: refblock_alloc.switch_table; errno: 28; imm: off; once: off; write 
+write failed: No space left on device
+
+10 leaked clusters were found on the image.
+This means waste of disk space, but no harm to data.
+Formatting 'TEST_DIR/t.IMGFMT', fmt=IMGFMT size=1073741824 
+
+Event: refblock_alloc.switch_table; errno: 28; imm: off; once: off; write -b
+write failed: No space left on device
+
+23 leaked clusters were found on the image.
+This means waste of disk space, but no harm to data.
+
+=== L1 growth tests ===
+
+Formatting 'TEST_DIR/t.IMGFMT', fmt=IMGFMT size=1073741824 
+
+Event: l1_grow.alloc_table; errno: 5; imm: off; once: on
+write failed: Input/output error
+No errors were found on the image.
+Formatting 'TEST_DIR/t.IMGFMT', fmt=IMGFMT size=1073741824 
+
+Event: l1_grow.alloc_table; errno: 5; imm: off; once: off
+write failed: Input/output error
+No errors were found on the image.
+Formatting 'TEST_DIR/t.IMGFMT', fmt=IMGFMT size=1073741824 
+
+Event: l1_grow.alloc_table; errno: 28; imm: off; once: on
+write failed: No space left on device
+No errors were found on the image.
+Formatting 'TEST_DIR/t.IMGFMT', fmt=IMGFMT size=1073741824 
+
+Event: l1_grow.alloc_table; errno: 28; imm: off; once: off
+write failed: No space left on device
+No errors were found on the image.
+Formatting 'TEST_DIR/t.IMGFMT', fmt=IMGFMT size=1073741824 
+
+Event: l1_grow.write_table; errno: 5; imm: off; once: on
+write failed: Input/output error
+No errors were found on the image.
+Formatting 'TEST_DIR/t.IMGFMT', fmt=IMGFMT size=1073741824 
+
+Event: l1_grow.write_table; errno: 5; imm: off; once: off
+write failed: Input/output error
+No errors were found on the image.
+Formatting 'TEST_DIR/t.IMGFMT', fmt=IMGFMT size=1073741824 
+
+Event: l1_grow.write_table; errno: 28; imm: off; once: on
+write failed: No space left on device
+No errors were found on the image.
+Formatting 'TEST_DIR/t.IMGFMT', fmt=IMGFMT size=1073741824 
+
+Event: l1_grow.write_table; errno: 28; imm: off; once: off
+write failed: No space left on device
+No errors were found on the image.
+Formatting 'TEST_DIR/t.IMGFMT', fmt=IMGFMT size=1073741824 
+
+Event: l1_grow.activate_table; errno: 5; imm: off; once: on
+write failed: Input/output error
+No errors were found on the image.
+Formatting 'TEST_DIR/t.IMGFMT', fmt=IMGFMT size=1073741824 
+
+Event: l1_grow.activate_table; errno: 5; imm: off; once: off
+write failed: Input/output error
+
+96 leaked clusters were found on the image.
+This means waste of disk space, but no harm to data.
+Formatting 'TEST_DIR/t.IMGFMT', fmt=IMGFMT size=1073741824 
+
+Event: l1_grow.activate_table; errno: 28; imm: off; once: on
+write failed: No space left on device
+No errors were found on the image.
+Formatting 'TEST_DIR/t.IMGFMT', fmt=IMGFMT size=1073741824 
+
+Event: l1_grow.activate_table; errno: 28; imm: off; once: off
+write failed: No space left on device
+
+96 leaked clusters were found on the image.
+This means waste of disk space, but no harm to data.
+*** done
diff --git a/tests/qemu-iotests/check b/tests/qemu-iotests/check
index e51bae8..4ecf497 100755
--- a/tests/qemu-iotests/check
+++ b/tests/qemu-iotests/check
@@ -239,12 +239,18 @@ do
                 echo -n " [failed, exit status $sts]"
                 err=true
             fi
-            if [ ! -f $seq.out ]
+
+            reference=$seq.out
+            if (echo $QEMU_IO_OPTIONS | grep -s -- '--nocache' > /dev/null); then
+                [ -f $seq.out.nocache ] && reference=$seq.out.nocache
+            fi
+
+            if [ ! -f $reference ]
             then
                 echo " - no qualified output"
                 err=true
             else
-                if diff -w $seq.out $tmp.out >/dev/null 2>&1
+                if diff -w $reference $tmp.out >/dev/null 2>&1
                 then
                     echo ""
                     if $err
@@ -256,7 +262,7 @@ do
                 else
                     echo " - output mismatch (see $seq.out.bad)"
                     mv $tmp.out $seq.out.bad
-                    $diff -w $seq.out $seq.out.bad
+                    $diff -w $reference $seq.out.bad
                     err=true
                 fi
             fi
-- 
1.7.1