diff options
Diffstat (limited to 'tests')
| -rwxr-xr-x | tests/qemu-iotests/112 | 109 | ||||
| -rw-r--r-- | tests/qemu-iotests/112.out | 71 |
2 files changed, 180 insertions, 0 deletions
diff --git a/tests/qemu-iotests/112 b/tests/qemu-iotests/112 index 3f054a3fcd..34ba06acd6 100755 --- a/tests/qemu-iotests/112 +++ b/tests/qemu-iotests/112 @@ -180,6 +180,115 @@ $QEMU_IMG snapshot -c foo "$TEST_IMG" # leaked (refcount=UINT64_MAX reference=1) _check_test_img +echo +echo '=== Amend from refcount_bits=16 to refcount_bits=1 ===' +echo + +_make_test_img 64M +print_refcount_bits + +$QEMU_IO -c 'write 16M 32M' "$TEST_IMG" | _filter_qemu_io +$QEMU_IMG amend -o refcount_bits=1 "$TEST_IMG" +_check_test_img +print_refcount_bits + +echo +echo '=== Amend from refcount_bits=1 to refcount_bits=64 ===' +echo + +$QEMU_IMG amend -o refcount_bits=64 "$TEST_IMG" +_check_test_img +print_refcount_bits + +echo +echo '=== Amend to compat=0.10 ===' +echo + +# Should not work because refcount_bits needs to be 16 for compat=0.10 +$QEMU_IMG amend -o compat=0.10 "$TEST_IMG" +print_refcount_bits +# Should work +$QEMU_IMG amend -o compat=0.10,refcount_bits=16 "$TEST_IMG" +_check_test_img +print_refcount_bits + +# Get back to compat=1.1 and refcount_bits=16 +$QEMU_IMG amend -o compat=1.1 "$TEST_IMG" +print_refcount_bits +# Should not work +$QEMU_IMG amend -o refcount_bits=32,compat=0.10 "$TEST_IMG" +print_refcount_bits + +echo +echo '=== Amend with snapshot ===' +echo + +$QEMU_IMG snapshot -c foo "$TEST_IMG" +# Just to have different refcounts across the image +$QEMU_IO -c 'write 0 16M' "$TEST_IMG" | _filter_qemu_io + +# Should not work (may work in the future by first decreasing all refcounts so +# they fit into the target range by copying them) +$QEMU_IMG amend -o refcount_bits=1 "$TEST_IMG" +_check_test_img +print_refcount_bits + +# Should work +$QEMU_IMG amend -o refcount_bits=2 "$TEST_IMG" +_check_test_img +print_refcount_bits + +echo +echo '=== Testing too many references for check ===' +echo + +IMGOPTS="$IMGOPTS,refcount_bits=1" _make_test_img 64M +print_refcount_bits + +# This cluster should be created at 0x50000 +$QEMU_IO -c 'write 0 64k' "$TEST_IMG" | _filter_qemu_io +# Now make the second L2 entry (the L2 table should be at 0x40000) point to that +# cluster, so we have two references +poke_file "$TEST_IMG" $((0x40008)) "\x80\x00\x00\x00\x00\x05\x00\x00" + +# This should say "please use amend" +_check_test_img -r all + +# So we do that +$QEMU_IMG amend -o refcount_bits=2 "$TEST_IMG" +print_refcount_bits + +# And try again +_check_test_img -r all + +echo +echo '=== Multiple walks necessary during amend ===' +echo + +IMGOPTS="$IMGOPTS,refcount_bits=1,cluster_size=512" _make_test_img 64k + +# Cluster 0 is the image header, clusters 1 to 4 are used by the L1 table, a +# single L2 table, the reftable and a single refblock. This creates 58 data +# clusters (actually, the L2 table is created here, too), so in total there are +# then 63 used clusters in the image. With a refcount width of 64, one refblock +# describes 64 clusters (512 bytes / 64 bits/entry = 64 entries), so this will +# make the first refblock in the amended image have exactly one free entry. +$QEMU_IO -c "write 0 $((58 * 512))" "$TEST_IMG" | _filter_qemu_io + +# Now change the refcount width; since the first new refblock will have exactly +# one free entry, that entry will be used to store its own reference. No other +# refblocks are needed, so then the new reftable will be allocated; since the +# first new refblock is completely filled up, this will require a new refblock +# which is why the refcount width changing function will need to run through +# everything one more time until the allocations are stable. +# Having more walks than usual should be visible as regressing progress (from +# 66.67 % (2/3 walks) to 50.00 % (2/4 walks)). +$QEMU_IMG amend -o refcount_bits=64 -p "$TEST_IMG" | tr '\r' '\n' \ + | grep -A 1 '66.67' +print_refcount_bits + +_check_test_img + # success, all done echo '*** done' diff --git a/tests/qemu-iotests/112.out b/tests/qemu-iotests/112.out index 8dd3df0871..81b04d1452 100644 --- a/tests/qemu-iotests/112.out +++ b/tests/qemu-iotests/112.out @@ -81,4 +81,75 @@ Leaked cluster 6 refcount=1 reference=0 2 leaked clusters were found on the image. This means waste of disk space, but no harm to data. + +=== Amend from refcount_bits=16 to refcount_bits=1 === + +Formatting 'TEST_DIR/t.IMGFMT', fmt=IMGFMT size=67108864 +refcount bits: 16 +wrote 33554432/33554432 bytes at offset 16777216 +32 MiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec) +No errors were found on the image. +refcount bits: 1 + +=== Amend from refcount_bits=1 to refcount_bits=64 === + +No errors were found on the image. +refcount bits: 64 + +=== Amend to compat=0.10 === + +qemu-img: compat=0.10 requires refcount_bits=16 +qemu-img: Error while amending options: Operation not supported +refcount bits: 64 +No errors were found on the image. +refcount bits: 16 +refcount bits: 16 +qemu-img: Different refcount widths than 16 bits require compatibility level 1.1 or above (use compat=1.1 or greater) +qemu-img: Error while amending options: Invalid argument +refcount bits: 16 + +=== Amend with snapshot === + +wrote 16777216/16777216 bytes at offset 0 +16 MiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec) +qemu-img: Cannot decrease refcount entry width to 1 bits: Cluster at offset 0x50000 has a refcount of 2 +qemu-img: Error while amending options: Invalid argument +No errors were found on the image. +refcount bits: 16 +No errors were found on the image. +refcount bits: 2 + +=== Testing too many references for check === + +Formatting 'TEST_DIR/t.IMGFMT', fmt=IMGFMT size=67108864 +refcount bits: 1 +wrote 65536/65536 bytes at offset 0 +64 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec) +ERROR: overflow cluster offset=0x50000 +Use qemu-img amend to increase the refcount entry width or qemu-img convert to create a clean copy if the image cannot be opened for writing + +1 errors were found on the image. +Data may be corrupted, or further writes to the image may corrupt it. +refcount bits: 2 +ERROR cluster 5 refcount=1 reference=2 +Repairing cluster 5 refcount=1 reference=2 +Repairing OFLAG_COPIED data cluster: l2_entry=8000000000050000 refcount=2 +Repairing OFLAG_COPIED data cluster: l2_entry=8000000000050000 refcount=2 +The following inconsistencies were found and repaired: + + 0 leaked clusters + 3 corruptions + +Double checking the fixed image now... +No errors were found on the image. + +=== Multiple walks necessary during amend === + +Formatting 'TEST_DIR/t.IMGFMT', fmt=IMGFMT size=65536 +wrote 29696/29696 bytes at offset 0 +29 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec) + (66.67/100%) + (50.00/100%) +refcount bits: 64 +No errors were found on the image. *** done |