diff mbox series

[PULL,01/12] iotests/291: Filter irrelevant parts of img-info

Message ID 20201027215914.619460-2-eblake@redhat.com
State Accepted
Commit b4af1df08f9433d858ec01aff4ec9f06cb28128b
Headers show
Series NBD patches for 2020-10-27 soft-freeze | expand

Commit Message

Eric Blake Oct. 27, 2020, 9:59 p.m. UTC 
From: Max Reitz <mreitz@redhat.com>

We need to let _img_info emit the format-specific information so we get
the list of bitmaps we want, but we do not need anything but the
bitmaps.  So filter out everything that is irrelevant to us.  (Ideally,
this would be a generalized function in common.filters that takes a list
of things to keep, but that would require implementing an anti-bitmap
filter, which would be hard, and which we do not need here.  So that is
why this function is just a local hack.)

This lets 291 pass with qcow2 options like refcount_bits or data_file
again.

Fixes: 14f16bf9474c860ecc127a66a86961942319f7af
       ("qemu-img: Support bitmap --merge into backing image")
Signed-off-by: Max Reitz <mreitz@redhat.com>
Message-Id: <20201027164416.144115-2-mreitz@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Signed-off-by: Eric Blake <eblake@redhat.com>
---
 tests/qemu-iotests/291     | 14 +++++++++++---
 tests/qemu-iotests/291.out | 20 --------------------
 2 files changed, 11 insertions(+), 23 deletions(-)
diff mbox series

Patch

diff --git a/tests/qemu-iotests/291 b/tests/qemu-iotests/291
index 4f837b205655..77fa38f93d31 100755
--- a/tests/qemu-iotests/291
+++ b/tests/qemu-iotests/291
@@ -42,6 +42,14 @@  _require_command QEMU_NBD
 # compat=0.10 does not support bitmaps
 _unsupported_imgopts 'compat=0.10'

+# Filter irrelevant format-specific information from the qemu-img info
+# output (we only want the bitmaps, basically)
+_filter_irrelevant_img_info()
+{
+    grep -v -e 'compat' -e 'compression type' -e 'data file' -e 'extended l2' \
+            -e 'lazy refcounts' -e 'refcount bits'
+}
+
 echo
 echo "=== Initial image setup ==="
 echo
@@ -79,7 +87,7 @@  echo

 # Only bitmaps from the active layer are copied
 $QEMU_IMG convert --bitmaps -O qcow2 "$TEST_IMG.orig" "$TEST_IMG"
-_img_info --format-specific
+_img_info --format-specific | _filter_irrelevant_img_info
 # But we can also merge in bitmaps from other layers.  This test is a bit
 # contrived to cover more code paths, in reality, you could merge directly
 # into b0 without going through tmp
@@ -89,7 +97,7 @@  $QEMU_IMG bitmap --add --merge b0 -b "$TEST_IMG.base" -F $IMGFMT \
 $QEMU_IMG bitmap --merge tmp -f $IMGFMT "$TEST_IMG" b0
 $QEMU_IMG bitmap --remove --image-opts \
     driver=$IMGFMT,file.driver=file,file.filename="$TEST_IMG" tmp
-_img_info --format-specific
+_img_info --format-specific | _filter_irrelevant_img_info

 echo
 echo "=== Merge from top layer into backing image ==="
@@ -98,7 +106,7 @@  echo
 $QEMU_IMG rebase -u -F qcow2 -b "$TEST_IMG.base" "$TEST_IMG"
 $QEMU_IMG bitmap --add --merge b2 -b "$TEST_IMG" -F $IMGFMT \
      -f $IMGFMT "$TEST_IMG.base" b3
-_img_info --format-specific --backing-chain
+_img_info --format-specific --backing-chain | _filter_irrelevant_img_info

 echo
 echo "=== Check bitmap contents ==="
diff --git a/tests/qemu-iotests/291.out b/tests/qemu-iotests/291.out
index 3990f7aacc7b..23411c0ff4d9 100644
--- a/tests/qemu-iotests/291.out
+++ b/tests/qemu-iotests/291.out
@@ -26,9 +26,6 @@  file format: IMGFMT
 virtual size: 10 MiB (10485760 bytes)
 cluster_size: 65536
 Format specific information:
-    compat: 1.1
-    compression type: zlib
-    lazy refcounts: false
     bitmaps:
         [0]:
             flags:
@@ -39,17 +36,12 @@  Format specific information:
                 [0]: auto
             name: b2
             granularity: 65536
-    refcount bits: 16
     corrupt: false
-    extended l2: false
 image: TEST_DIR/t.IMGFMT
 file format: IMGFMT
 virtual size: 10 MiB (10485760 bytes)
 cluster_size: 65536
 Format specific information:
-    compat: 1.1
-    compression type: zlib
-    lazy refcounts: false
     bitmaps:
         [0]:
             flags:
@@ -64,9 +56,7 @@  Format specific information:
             flags:
             name: b0
             granularity: 65536
-    refcount bits: 16
     corrupt: false
-    extended l2: false

 === Merge from top layer into backing image ===

@@ -77,9 +67,6 @@  cluster_size: 65536
 backing file: TEST_DIR/t.IMGFMT.base
 backing file format: IMGFMT
 Format specific information:
-    compat: 1.1
-    compression type: zlib
-    lazy refcounts: false
     bitmaps:
         [0]:
             flags:
@@ -94,18 +81,13 @@  Format specific information:
             flags:
             name: b0
             granularity: 65536
-    refcount bits: 16
     corrupt: false
-    extended l2: false

 image: TEST_DIR/t.IMGFMT.base
 file format: IMGFMT
 virtual size: 10 MiB (10485760 bytes)
 cluster_size: 65536
 Format specific information:
-    compat: 1.1
-    compression type: zlib
-    lazy refcounts: false
     bitmaps:
         [0]:
             flags:
@@ -117,9 +99,7 @@  Format specific information:
                 [0]: auto
             name: b3
             granularity: 65536
-    refcount bits: 16
     corrupt: false
-    extended l2: false

 === Check bitmap contents ===