1*3dd3e248SVladimir Sementsov-Ogievskiy#!/usr/bin/env bash 2*3dd3e248SVladimir Sementsov-Ogievskiy# 3*3dd3e248SVladimir Sementsov-Ogievskiy# Test big discard in qcow2 shrink 4*3dd3e248SVladimir Sementsov-Ogievskiy# 5*3dd3e248SVladimir Sementsov-Ogievskiy# Copyright (c) 2019 Virtuozzo International GmbH. All rights reserved. 6*3dd3e248SVladimir Sementsov-Ogievskiy# 7*3dd3e248SVladimir Sementsov-Ogievskiy# This program is free software; you can redistribute it and/or modify 8*3dd3e248SVladimir Sementsov-Ogievskiy# it under the terms of the GNU General Public License as published by 9*3dd3e248SVladimir Sementsov-Ogievskiy# the Free Software Foundation; either version 2 of the License, or 10*3dd3e248SVladimir Sementsov-Ogievskiy# (at your option) any later version. 11*3dd3e248SVladimir Sementsov-Ogievskiy# 12*3dd3e248SVladimir Sementsov-Ogievskiy# This program is distributed in the hope that it will be useful, 13*3dd3e248SVladimir Sementsov-Ogievskiy# but WITHOUT ANY WARRANTY; without even the implied warranty of 14*3dd3e248SVladimir Sementsov-Ogievskiy# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 15*3dd3e248SVladimir Sementsov-Ogievskiy# GNU General Public License for more details. 16*3dd3e248SVladimir Sementsov-Ogievskiy# 17*3dd3e248SVladimir Sementsov-Ogievskiy# You should have received a copy of the GNU General Public License 18*3dd3e248SVladimir Sementsov-Ogievskiy# along with this program. If not, see <http://www.gnu.org/licenses/>. 19*3dd3e248SVladimir Sementsov-Ogievskiy# 20*3dd3e248SVladimir Sementsov-Ogievskiy 21*3dd3e248SVladimir Sementsov-Ogievskiy# creator 22*3dd3e248SVladimir Sementsov-Ogievskiyowner=vsementsov@virtuozzo.com 23*3dd3e248SVladimir Sementsov-Ogievskiy 24*3dd3e248SVladimir Sementsov-Ogievskiyseq=`basename $0` 25*3dd3e248SVladimir Sementsov-Ogievskiyecho "QA output created by $seq" 26*3dd3e248SVladimir Sementsov-Ogievskiy 27*3dd3e248SVladimir Sementsov-Ogievskiystatus=1 # failure is the default! 28*3dd3e248SVladimir Sementsov-Ogievskiy 29*3dd3e248SVladimir Sementsov-Ogievskiy_cleanup() 30*3dd3e248SVladimir Sementsov-Ogievskiy{ 31*3dd3e248SVladimir Sementsov-Ogievskiy _cleanup_test_img 32*3dd3e248SVladimir Sementsov-Ogievskiy} 33*3dd3e248SVladimir Sementsov-Ogievskiytrap "_cleanup; exit \$status" 0 1 2 3 15 34*3dd3e248SVladimir Sementsov-Ogievskiy 35*3dd3e248SVladimir Sementsov-Ogievskiy# get standard environment, filters and checks 36*3dd3e248SVladimir Sementsov-Ogievskiy. ./common.rc 37*3dd3e248SVladimir Sementsov-Ogievskiy. ./common.filter 38*3dd3e248SVladimir Sementsov-Ogievskiy 39*3dd3e248SVladimir Sementsov-Ogievskiy_supported_fmt qcow2 40*3dd3e248SVladimir Sementsov-Ogievskiy_supported_proto file 41*3dd3e248SVladimir Sementsov-Ogievskiy_supported_os Linux 42*3dd3e248SVladimir Sementsov-Ogievskiy 43*3dd3e248SVladimir Sementsov-Ogievskiy# This test checks that qcow2_process_discards does not truncate a discard 44*3dd3e248SVladimir Sementsov-Ogievskiy# request > 2G. 45*3dd3e248SVladimir Sementsov-Ogievskiy# To reproduce bug we need to overflow int by one sequential discard, so we 46*3dd3e248SVladimir Sementsov-Ogievskiy# need size > 2G, bigger cluster size (as with default 64k we may have maximum 47*3dd3e248SVladimir Sementsov-Ogievskiy# of 512M sequential data, corresponding to one L1 entry), and we need some 48*3dd3e248SVladimir Sementsov-Ogievskiy# data of the beginning of the disk mapped to the end of file to prevent 49*3dd3e248SVladimir Sementsov-Ogievskiy# bdrv_co_truncate(bs->file) call in qcow2_co_truncate(), which might succeed 50*3dd3e248SVladimir Sementsov-Ogievskiy# anyway. 51*3dd3e248SVladimir Sementsov-Ogievskiy 52*3dd3e248SVladimir Sementsov-Ogievskiydisk_usage() 53*3dd3e248SVladimir Sementsov-Ogievskiy{ 54*3dd3e248SVladimir Sementsov-Ogievskiy du --block-size=1 $1 | awk '{print $1}' 55*3dd3e248SVladimir Sementsov-Ogievskiy} 56*3dd3e248SVladimir Sementsov-Ogievskiy 57*3dd3e248SVladimir Sementsov-Ogievskiysize=2100M 58*3dd3e248SVladimir Sementsov-OgievskiyIMGOPTS="cluster_size=1M,preallocation=metadata" 59*3dd3e248SVladimir Sementsov-Ogievskiy 60*3dd3e248SVladimir Sementsov-Ogievskiy_make_test_img $size 61*3dd3e248SVladimir Sementsov-Ogievskiy$QEMU_IO -c 'discard 0 10M' -c 'discard 2090M 10M' \ 62*3dd3e248SVladimir Sementsov-Ogievskiy -c 'write 2090M 10M' -c 'write 0 10M' "$TEST_IMG" | _filter_qemu_io 63*3dd3e248SVladimir Sementsov-Ogievskiy 64*3dd3e248SVladimir Sementsov-Ogievskiy# Check that our trick with swapping first and last 10M chunks succeeded. 65*3dd3e248SVladimir Sementsov-Ogievskiy# Otherwise test may pass even if bdrv_pdiscard() fails in 66*3dd3e248SVladimir Sementsov-Ogievskiy# qcow2_process_discards() 67*3dd3e248SVladimir Sementsov-Ogievskiy$QEMU_IMG map "$TEST_IMG" | _filter_testdir 68*3dd3e248SVladimir Sementsov-Ogievskiy 69*3dd3e248SVladimir Sementsov-Ogievskiybefore=$(disk_usage "$TEST_IMG") 70*3dd3e248SVladimir Sementsov-Ogievskiy$QEMU_IMG resize --shrink "$TEST_IMG" 5M 71*3dd3e248SVladimir Sementsov-Ogievskiyafter=$(disk_usage "$TEST_IMG") 72*3dd3e248SVladimir Sementsov-Ogievskiy 73*3dd3e248SVladimir Sementsov-Ogievskiyecho "Disk usage delta: $((before - after))" 74*3dd3e248SVladimir Sementsov-Ogievskiy 75*3dd3e248SVladimir Sementsov-Ogievskiy# success, all done 76*3dd3e248SVladimir Sementsov-Ogievskiyecho "*** done" 77*3dd3e248SVladimir Sementsov-Ogievskiyrm -f $seq.full 78*3dd3e248SVladimir Sementsov-Ogievskiystatus=0 79