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Diffstat (limited to 'qemu/tests/qemu-iotests/112')
| -rwxr-xr-x | qemu/tests/qemu-iotests/112 | 295 |
1 files changed, 0 insertions, 295 deletions
diff --git a/qemu/tests/qemu-iotests/112 b/qemu/tests/qemu-iotests/112 deleted file mode 100755 index 28eb9aae9..000000000 --- a/qemu/tests/qemu-iotests/112 +++ /dev/null @@ -1,295 +0,0 @@ -#!/bin/bash -# -# Test cases for different refcount_bits values -# -# Copyright (C) 2015 Red Hat, Inc. -# -# This program is free software; you can redistribute it and/or modify -# it under the terms of the GNU General Public License as published by -# the Free Software Foundation; either version 2 of the License, or -# (at your option) any later version. -# -# This program is distributed in the hope that it will be useful, -# but WITHOUT ANY WARRANTY; without even the implied warranty of -# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the -# GNU General Public License for more details. -# -# You should have received a copy of the GNU General Public License -# along with this program. If not, see <http://www.gnu.org/licenses/>. -# - -# creator -owner=mreitz@redhat.com - -seq="$(basename $0)" -echo "QA output created by $seq" - -here="$PWD" -status=1 # failure is the default! - -_cleanup() -{ - _cleanup_test_img -} -trap "_cleanup; exit \$status" 0 1 2 3 15 - -# get standard environment, filters and checks -. ./common.rc -. ./common.filter - -# This tests qcow2-specific low-level functionality -_supported_fmt qcow2 -_supported_proto file -_supported_os Linux -# This test will set refcount_bits on its own which would conflict with the -# manual setting; compat will be overridden as well -_unsupported_imgopts refcount_bits 'compat=0.10' - -function print_refcount_bits() -{ - $QEMU_IMG info "$TEST_IMG" | sed -n '/refcount bits:/ s/^ *//p' -} - -echo -echo '=== refcount_bits limits ===' -echo - -# Must be positive (non-zero) -IMGOPTS="$IMGOPTS,refcount_bits=0" _make_test_img 64M -# Must be positive (non-negative) -IMGOPTS="$IMGOPTS,refcount_bits=-1" _make_test_img 64M -# May not exceed 64 -IMGOPTS="$IMGOPTS,refcount_bits=128" _make_test_img 64M -# Must be a power of two -IMGOPTS="$IMGOPTS,refcount_bits=42" _make_test_img 64M - -# 1 is the minimum -IMGOPTS="$IMGOPTS,refcount_bits=1" _make_test_img 64M -print_refcount_bits - -# 64 is the maximum -IMGOPTS="$IMGOPTS,refcount_bits=64" _make_test_img 64M -print_refcount_bits - -# 16 is the default -_make_test_img 64M -print_refcount_bits - -echo -echo '=== refcount_bits and compat=0.10 ===' -echo - -# Should work -IMGOPTS="$IMGOPTS,compat=0.10,refcount_bits=16" _make_test_img 64M -print_refcount_bits - -# Should not work -IMGOPTS="$IMGOPTS,compat=0.10,refcount_bits=1" _make_test_img 64M -IMGOPTS="$IMGOPTS,compat=0.10,refcount_bits=64" _make_test_img 64M - - -echo -echo '=== Snapshot limit on refcount_bits=1 ===' -echo - -IMGOPTS="$IMGOPTS,refcount_bits=1" _make_test_img 64M -print_refcount_bits - -$QEMU_IO -c 'write 0 512' "$TEST_IMG" | _filter_qemu_io - -# Should fail for now; in the future, this might be supported by automatically -# copying all clusters with overflowing refcount -$QEMU_IMG snapshot -c foo "$TEST_IMG" - -# The new L1 table could/should be leaked -_check_test_img - -echo -echo '=== Snapshot limit on refcount_bits=2 ===' -echo - -IMGOPTS="$IMGOPTS,refcount_bits=2" _make_test_img 64M -print_refcount_bits - -$QEMU_IO -c 'write 0 512' "$TEST_IMG" | _filter_qemu_io - -# Should succeed -$QEMU_IMG snapshot -c foo "$TEST_IMG" -$QEMU_IMG snapshot -c bar "$TEST_IMG" -# Should fail (4th reference) -$QEMU_IMG snapshot -c baz "$TEST_IMG" - -# The new L1 table could/should be leaked -_check_test_img - -echo -echo '=== Compressed clusters with refcount_bits=1 ===' -echo - -IMGOPTS="$IMGOPTS,refcount_bits=1" _make_test_img 64M -print_refcount_bits - -# Both should fit into a single host cluster; instead of failing to increase the -# refcount of that cluster, qemu should just allocate a new cluster and make -# this operation succeed -$QEMU_IO -c 'write -P 0 -c 0 64k' \ - -c 'write -P 1 -c 64k 64k' \ - "$TEST_IMG" | _filter_qemu_io - -_check_test_img - -echo -echo '=== MSb set in 64 bit refcount ===' -echo - -IMGOPTS="$IMGOPTS,refcount_bits=64" _make_test_img 64M -print_refcount_bits - -$QEMU_IO -c 'write 0 512' "$TEST_IMG" | _filter_qemu_io - -# Set the MSb in the refblock entry of the data cluster -poke_file "$TEST_IMG" $((0x20028)) "\x80\x00\x00\x00\x00\x00\x00\x00" - -# Clear OFLAG_COPIED in the L2 entry of the data cluster -poke_file "$TEST_IMG" $((0x40000)) "\x00\x00\x00\x00\x00\x05\x00\x00" - -# Try to write to that cluster (should work, even though the MSb is set) -$QEMU_IO -c 'write 0 512' "$TEST_IMG" | _filter_qemu_io - -echo -echo '=== Snapshot on maximum 64 bit refcount value ===' -echo - -IMGOPTS="$IMGOPTS,refcount_bits=64" _make_test_img 64M -print_refcount_bits - -$QEMU_IO -c 'write 0 512' "$TEST_IMG" | _filter_qemu_io - -# Set the refblock entry to the maximum value possible -poke_file "$TEST_IMG" $((0x20028)) "\xff\xff\xff\xff\xff\xff\xff\xff" - -# Clear OFLAG_COPIED in the L2 entry of the data cluster -poke_file "$TEST_IMG" $((0x40000)) "\x00\x00\x00\x00\x00\x05\x00\x00" - -# Try a snapshot (should correctly identify the overflow; may work in the future -# by falling back to COW) -$QEMU_IMG snapshot -c foo "$TEST_IMG" - -# The new L1 table could/should be leaked; and obviously the data cluster is -# leaked (refcount=UINT64_MAX reference=1) -_check_test_img - -echo -echo '=== Amend from refcount_bits=16 to refcount_bits=1 ===' -echo - -_make_test_img 64M -print_refcount_bits - -$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' -rm -f $seq.full -status=0 |