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qemu-iotests: align test requests according to cluster size

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Change the io_test and io_test2 functions to take the cluster size of the image
and the number of test requests to issue. Tests are changed to specify a
cluster size (usually 4k), but expected test results stay the same for now
(apart from qemu-img printing the cluster size now).

Based on a patch written by Christoph Hellwig.

Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Signed-off-by: Christoph Hellwig <hch@lst.de>
This commit is contained in:
Kevin Wolf 2009-10-01 14:29:59 -03:00
parent 3b5fe6e60c
commit 8fc1024cee
10 changed files with 59 additions and 42 deletions
Download patch file Download diff file Expand all files Collapse all files

66
tests/qemu-iotests/common.pattern
View file

@ -63,69 +63,77 @@ function io_zero() {
function io_test() {
local op=$1
local offset=$2
local cluster_size=$3
# Complete clusters (size = 4k)
io "$op" $offset 4096 4096 256
offset=$((offset + 256 * 4096))
local num_large=$4
local num_medium=$((num_large * num_large))
local num_small=$((4 * num_medium))
local half_cluster=$((cluster_size / 2))
local quarter_cluster=$((cluster_size / 4))
local l2_size=$((cluster_size * cluster_size / 8))
# Complete clusters
io "$op" $offset $cluster_size $cluster_size $num_small
offset=$((offset + num_small * $cluster_size))
# From somewhere in the middle to the end of a cluster
io "$op" $((offset + 2048)) 2048 4096 256
offset=$((offset + 256 * 4096))
io "$op" $((offset + $half_cluster)) $half_cluster $cluster_size $num_small
offset=$((offset + num_small * $cluster_size))
# From the start to somewhere in the middle of a cluster
io "$op" $offset 2048 4096 256
offset=$((offset + 256 * 4096))
io "$op" $offset $half_cluster $cluster_size $num_small
offset=$((offset + num_small * $cluster_size))
# Completely misaligned (and small)
io "$op" $((offset + 1024)) 2048 4096 256
offset=$((offset + 256 * 4096))
io "$op" $((offset + $quarter_cluster)) $half_cluster $cluster_size $num_small
offset=$((offset + num_small * $cluster_size))
# Spanning multiple clusters
io "$op" $((offset + 2048)) 8192 12288 64
offset=$((offset + 64 * 12288))
io "$op" $((offset + $half_cluster)) $((cluster_size * 2)) $((cluster_size * 3)) $num_medium
offset=$((offset + num_medium * 3 * $cluster_size))
# Spanning multiple L2 tables
# L2 table size: 512 clusters of 4k = 2M
io "$op" $((offset + 2048)) 4194304 4999680 8
offset=$((offset + 8 * 4999680))
if false; then
true
fi
io "$op" $((offset + $half_cluster)) $((2 * l2_size)) 4999680 $num_large
offset=$((offset + num_large * (2 * l2_size + 512 * 1573)))
}
function io_test2() {
local orig_offset=$1
local cluster_size=$2
local num=$3
# Pattern (repeat after 9 clusters):
# used - used - free - used - compressed - compressed - free - free - compressed
# 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
io_pattern writev $((offset + 4 * $cluster_size)) $cluster_size $((9 * $cluster_size)) $num 165
echo === Clusters to be compressed [2]
io_pattern writev $((offset + 5 * 4096)) 4096 $((9 * 4096)) 256 165
io_pattern writev $((offset + 5 * $cluster_size)) $cluster_size $((9 * $cluster_size)) $num 165
echo === Clusters to be compressed [3]
io_pattern writev $((offset + 8 * 4096)) 4096 $((9 * 4096)) 256 165
io_pattern writev $((offset + 8 * $cluster_size)) $cluster_size $((9 * $cluster_size)) $num 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
io_pattern writev $((offset + 0 * $cluster_size)) $cluster_size $((9 * $cluster_size)) $num 165
echo === Used clusters [2]
io_pattern writev $((offset + 1 * 4096)) 4096 $((9 * 4096)) 256 165
io_pattern writev $((offset + 1 * $cluster_size)) $cluster_size $((9 * $cluster_size)) $num 165
echo === Used clusters [3]
io_pattern writev $((offset + 3 * 4096)) 4096 $((9 * 4096)) 256 165
io_pattern writev $((offset + 3 * $cluster_size)) $cluster_size $((9 * $cluster_size)) $num 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
io_pattern readv $((offset + 0 * $cluster_size)) $((2 * $cluster_size)) $((9 * $cluster_size)) $num 165
io_pattern readv $((offset + 3 * $cluster_size)) $((3 * $cluster_size)) $((9 * $cluster_size)) $num 165
io_pattern readv $((offset + 8 * $cluster_size)) $((1 * $cluster_size)) $((9 * $cluster_size)) $num 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
io_zero readv $((offset + 2 * $cluster_size)) $((1 * $cluster_size)) $((9 * $cluster_size)) $num
io_zero readv $((offset + 6 * $cluster_size)) $((2 * $cluster_size)) $((9 * $cluster_size)) $num
}