It's debatable whether it makes sense to consider the bench command
successful when no I/O requests will be performed. This changes the
behavior to consider a zero count of I/O requests an invalid value.
While at it, avoid using signed types for number of I/O requests.
The image file used, is a simple raw image with 1K size. There's a
obvious trade off between creating and reusing those images. This is
an experiment in sharing those among tests. It was created using:
mkdir -p tests/data/images/empty
cd tests/data/images/empty
qemu-img create raw 1K
This relies on the Test's "get_data()", which by default looks for
data files on sources that map to various levels of specificity of a
test: file, test and additionally with variant and a symlink.
One other possibility with regards to in-tree images, is to extend the
Test's "get_data()" API (which is extensible by design) and make the
common images directory a "source". The resulting API usage would be
similar to:
self.get_data("empty/raw", source="common_images")
or simply:
self.get_data("empty/raw")
To look for "empty/raw" in any of the available sources. That would
make the symlink unnecessary.
Reference:
https://avocado-framework.readthedocs.io/en/65.0/api/core/avocado.core.html#avocado.core.test.TestData
Signed-off-by: Cleber Rosa <cr...@redhat.com>
---
qemu-img.c | 8 ++---
tests/acceptance/qemu_img_bench.py | 34 ++++++++++++++++++++
tests/acceptance/qemu_img_bench.py.data/img | 1 +
tests/data/images/empty/raw | Bin 0 -> 1024 bytes
4 files changed, 39 insertions(+), 4 deletions(-)
create mode 100644 tests/acceptance/qemu_img_bench.py
create mode 120000 tests/acceptance/qemu_img_bench.py.data/img
create mode 100644 tests/data/images/empty/raw
diff --git a/qemu-img.c b/qemu-img.c
index 4c96db7ba4..7ffcdd1589 100644
--- a/qemu-img.c
+++ b/qemu-img.c
@@ -3960,7 +3960,7 @@ typedef struct BenchData {
int bufsize;
int step;
int nrreq;
- int n;
+ unsigned int n;
int flush_interval;
bool drain_on_flush;
uint8_t *buf;
@@ -4051,7 +4051,7 @@ static int img_bench(int argc, char **argv)
bool quiet = false;
bool image_opts = false;
bool is_write = false;
- int count = 75000;
+ unsigned int count = 75000;
int depth = 64;
int64_t offset = 0;
size_t bufsize = 4096;
@@ -4098,7 +4098,7 @@ static int img_bench(int argc, char **argv)
{
unsigned long res;
- if (qemu_strtoul(optarg, NULL, 0, &res) < 0 || res > INT_MAX) {
+ if (qemu_strtoul(optarg, NULL, 0, &res) < 0 || res > UINT_MAX ||
res <= 0) {
error_report("Invalid request count specified");
return 1;
}
@@ -4248,7 +4248,7 @@ static int img_bench(int argc, char **argv)
.flush_interval = flush_interval,
.drain_on_flush = drain_on_flush,
};
- printf("Sending %d %s requests, %d bytes each, %d in parallel "
+ printf("Sending %u %s requests, %d bytes each, %d in parallel "
"(starting at offset %" PRId64 ", step size %d)\n",
data.n, data.write ? "write" : "read", data.bufsize, data.nrreq,
data.offset, data.step);
diff --git a/tests/acceptance/qemu_img_bench.py
b/tests/acceptance/qemu_img_bench.py
new file mode 100644
index 0000000000..327524ad8f
--- /dev/null
+++ b/tests/acceptance/qemu_img_bench.py
@@ -0,0 +1,34 @@
+# Test for the basic qemu-img bench command
+#
+# Copyright (c) 2018 Red Hat, Inc.
+#
+# Author:
+# Cleber Rosa <cr...@redhat.com>
+#
+# This work is licensed under the terms of the GNU GPL, version 2 or
+# later. See the COPYING file in the top-level directory.
+
+import os
+
+from avocado_qemu import QemuImgTest
+from avocado.utils import process
+
+
+class Bench(QemuImgTest):
+ """
+ Runs the qemu-img tool with the bench command and different
+ options and verifies the expected outcome.
+
+ :avocado: enable
+ """
+ def check_invalid_count(self, count):
+ cmd = "%s bench -c %d %s" % (self.qemu_img_bin, count,
self.get_data("img"))
+ result = process.run(cmd, ignore_status=True)
+ self.assertEqual(1, result.exit_status)
+ self.assertIn(b"Invalid request count", result.stderr)
+
+ def test_zero_count(self):
+ self.check_invalid_count(0)
+
+ def test_negative_count(self):
+ self.check_invalid_count(-1)
diff --git a/tests/acceptance/qemu_img_bench.py.data/img
b/tests/acceptance/qemu_img_bench.py.data/img
new file mode 120000
index 0000000000..6d01ef2e85
--- /dev/null
+++ b/tests/acceptance/qemu_img_bench.py.data/img
@@ -0,0 +1 @@
+../../data/images/empty/raw
\ No newline at end of file
diff --git a/tests/data/images/empty/raw b/tests/data/images/empty/raw
new file mode 100644
index
0000000000000000000000000000000000000000..06d7405020018ddf3cacee90fd4af10487da3d20
GIT binary patch
literal 1024
ScmZQz7zLvtFd70QH3R?z00031
literal 0
HcmV?d00001
--
2.19.1
