Signed-off-by: Kevin Wolf <kwolf@redhat.com> Signed-off-by: Christoph Hellwig <hch@lst.de>
134 lines
3.9 KiB
Bash
134 lines
3.9 KiB
Bash
#!/bin/sh
|
|
#
|
|
# Copyright (C) 2009 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, write to the Free Software
|
|
# Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
|
|
# USA
|
|
#
|
|
|
|
function do_is_allocated() {
|
|
local start=$1
|
|
local size=$(( $2 / 512))
|
|
local step=$3
|
|
local count=$4
|
|
|
|
for i in `seq 1 $count`; do
|
|
echo alloc $(( start + i * step )) $size
|
|
done
|
|
}
|
|
|
|
function is_allocated() {
|
|
do_is_allocated "$@" | $QEMU_IO $TEST_IMG | _filter_qemu_io
|
|
}
|
|
|
|
function do_io() {
|
|
local op=$1
|
|
local start=$2
|
|
local size=$3
|
|
local step=$4
|
|
local count=$5
|
|
local pattern=$6
|
|
|
|
echo === IO: pattern $pattern >&2
|
|
for i in `seq 1 $count`; do
|
|
echo $op -P $pattern $(( start + i * step )) $size
|
|
done
|
|
}
|
|
|
|
function io_pattern() {
|
|
do_io $@ | $QEMU_IO $TEST_IMG | _filter_qemu_io
|
|
}
|
|
|
|
function io() {
|
|
local start=$2
|
|
local pattern=$(( (start >> 9) % 256 ))
|
|
|
|
do_io $@ $pattern | $QEMU_IO $TEST_IMG | _filter_qemu_io
|
|
}
|
|
|
|
function io_zero() {
|
|
do_io $@ 0 | $QEMU_IO $TEST_IMG | _filter_qemu_io
|
|
}
|
|
|
|
function io_test() {
|
|
local op=$1
|
|
local offset=$2
|
|
|
|
# Complete clusters (size = 4k)
|
|
io $op $offset 4096 4096 256
|
|
offset=$((offset + 256 * 4096))
|
|
|
|
# From somewhere in the middle to the end of a cluster
|
|
io $op $((offset + 2048)) 2048 4096 256
|
|
offset=$((offset + 256 * 4096))
|
|
|
|
# From the start to somewhere in the middle of a cluster
|
|
io $op $offset 2048 4096 256
|
|
offset=$((offset + 256 * 4096))
|
|
|
|
# Completely misaligned (and small)
|
|
io $op $((offset + 1024)) 2048 4096 256
|
|
offset=$((offset + 256 * 4096))
|
|
|
|
# Spanning multiple clusters
|
|
io $op $((offset + 2048)) 8192 12288 64
|
|
offset=$((offset + 64 * 12288))
|
|
|
|
# Spanning multiple L2 tables
|
|
# L2 table size: 512 clusters of 4k = 2M
|
|
io $op $((offset + 2048)) 4194304 4999680 8
|
|
offset=$((offset + 8 * 4999680))
|
|
|
|
if false; then
|
|
true
|
|
fi
|
|
}
|
|
|
|
function io_test2() {
|
|
local orig_offset=$1
|
|
|
|
# Pattern (repeat after 9 clusters):
|
|
# used - used - free - used - compressed - compressed - free - free - compressed
|
|
|
|
# Write the clusters to be compressed
|
|
echo === Clusters to be compressed [1]
|
|
io_pattern writev $((offset + 4 * 4096)) 4096 $((9 * 4096)) 256 165
|
|
echo === Clusters to be compressed [2]
|
|
io_pattern writev $((offset + 5 * 4096)) 4096 $((9 * 4096)) 256 165
|
|
echo === Clusters to be compressed [3]
|
|
io_pattern writev $((offset + 8 * 4096)) 4096 $((9 * 4096)) 256 165
|
|
|
|
mv $TEST_IMG $TEST_IMG.orig
|
|
$QEMU_IMG convert -f $IMGFMT -O $IMGFMT -c $TEST_IMG.orig $TEST_IMG
|
|
|
|
# Write the used clusters
|
|
echo === Used clusters [1]
|
|
io_pattern writev $((offset + 0 * 4096)) 4096 $((9 * 4096)) 256 165
|
|
echo === Used clusters [2]
|
|
io_pattern writev $((offset + 1 * 4096)) 4096 $((9 * 4096)) 256 165
|
|
echo === Used clusters [3]
|
|
io_pattern writev $((offset + 3 * 4096)) 4096 $((9 * 4096)) 256 165
|
|
|
|
# Read them
|
|
echo === Read used/compressed clusters
|
|
io_pattern readv $((offset + 0 * 4096)) $((2 * 4096)) $((9 * 4096)) 256 165
|
|
io_pattern readv $((offset + 3 * 4096)) $((3 * 4096)) $((9 * 4096)) 256 165
|
|
io_pattern readv $((offset + 8 * 4096)) $((1 * 4096)) $((9 * 4096)) 256 165
|
|
|
|
echo === Read zeros
|
|
io_zero readv $((offset + 2 * 4096)) $((1 * 4096)) $((9 * 4096)) 256
|
|
io_zero readv $((offset + 6 * 4096)) $((2 * 4096)) $((9 * 4096)) 256
|
|
}
|