From: Amos Kong <akong@xxxxxxxxxx>
KVM guest always pauses on NOSPACE error, this test
just repeatedly extend guest disk space and resume guest
from paused status.
Changes from v1:
- Use the most current KVM test API
- Use the autotest API for external commands execution
- Instead of chaining multiple shell commands as pre and
post commands, create proper pre and post scripts for the
test, as it is easier to figure out problems
- Instead of setting up /dev/loop0 hardcoded by default,
find the first available loop device before and use it.
Signed-off-by: Amos Kong <akong@xxxxxxxxxx>
---
client/tests/kvm/scripts/enospc-post.py | 74 +++++++++++++++++++++++++++++
client/tests/kvm/scripts/enospc-pre.py | 71 +++++++++++++++++++++++++++
client/tests/kvm/tests/enospc.py | 68 ++++++++++++++++++++++++++
client/tests/kvm/tests_base.cfg.sample | 14 +++++
4 files changed, 227 insertions(+), 0 deletions(-)
mode change 100644 => 100755 client/tests/kvm/scripts/bonding_setup.py
mode change 100644 => 100755 client/tests/kvm/scripts/check_image.py
create mode 100755 client/tests/kvm/scripts/enospc-post.py
create mode 100755 client/tests/kvm/scripts/enospc-pre.py
create mode 100644 client/tests/kvm/tests/enospc.py
diff --git a/client/tests/kvm/scripts/bonding_setup.py b/client/tests/kvm/scripts/bonding_setup.py
old mode 100644
new mode 100755
diff --git a/client/tests/kvm/scripts/check_image.py b/client/tests/kvm/scripts/check_image.py
old mode 100644
new mode 100755
diff --git a/client/tests/kvm/scripts/enospc-post.py b/client/tests/kvm/scripts/enospc-post.py
new file mode 100755
index 0000000..71cc383
--- /dev/null
+++ b/client/tests/kvm/scripts/enospc-post.py
@@ -0,0 +1,74 @@
+#!/usr/bin/python
+"""
+Simple script to setup enospc test environment
+"""
+import os, commands
+
+class SetupError(Exception):
+ """
+ Simple wrapper for the builtin Exception class.
+ """
+ pass
+
+
+def find_command(cmd):
+ """
+ Searches for a command on common paths, error if it can't find it.
+
+ @param cmd: Command to be found.
+ """
+ if os.path.exists(cmd):
+ return cmd
+ for dir in ["/usr/local/sbin", "/usr/local/bin",
+ "/usr/sbin", "/usr/bin", "/sbin", "/bin"]:
+ file = os.path.join(dir, cmd)
+ if os.path.exists(file):
+ return file
+ raise ValueError('Missing command: %s' % cmd)
+
+
+def run(cmd, info=None):
+ """
+ Run a command and throw an exception if it fails.
+ Optionally, you can provide additional contextual info.
+
+ @param cmd: Command string.
+ @param reason: Optional string that explains the context of the failure.
+
+ @raise: SetupError if command fails.
+ """
+ print "Running '%s'" % cmd
+ cmd_name = cmd.split(' ')[0]
+ find_command(cmd_name)
+ status, output = commands.getstatusoutput(cmd)
+ if status:
+ e_msg = ('Command %s failed.\nStatus:%s\nOutput:%s' %
+ (cmd, status, output))
+ if info is not None:
+ e_msg += '\nAdditional Info:%s' % info
+ raise SetupError(e_msg)
+
+ return (status, output)
+
+
+if __name__ == "__main__":
+ qemu_img_binary = os.environ['KVM_TEST_qemu_img_binary']
+ if not os.path.isabs(qemu_img_binary):
+ qemu_img_binary = os.path.join(KVM_TEST_DIR, qemu_img_binary)
+ if not os.path.exists(qemu_img_binary):
+ raise SetupError('The qemu-img binary that is supposed to be used '
+ '(%s) does not exist. Please verify your '
+ 'configuration' % qemu_img_binary)
+
+ run("lvremove -f vgtest")
+ status, output = run("losetup -a")
+ loopback_device = None
+ if output:
+ for line in output.splitlines():
+ device = line.split(":")[0]
+ if "/tmp/enospc.raw" in line:
+ loopback_device = device
+ break
+ if loopback_device is not None:
+ run("losetup -d %s" % loopback_device)
+ run("rm -rf /tmp/enospc.raw /tmp/kvm_autotest_root/images/enospc.qcow2")
diff --git a/client/tests/kvm/scripts/enospc-pre.py b/client/tests/kvm/scripts/enospc-pre.py
new file mode 100755
index 0000000..e56bdc0
--- /dev/null
+++ b/client/tests/kvm/scripts/enospc-pre.py
@@ -0,0 +1,71 @@
+#!/usr/bin/python
+"""
+Simple script to setup enospc test environment
+"""
+import os, commands
+
+class SetupError(Exception):
+ """
+ Simple wrapper for the builtin Exception class.
+ """
+ pass
+
+
+def find_command(cmd):
+ """
+ Searches for a command on common paths, error if it can't find it.
+
+ @param cmd: Command to be found.
+ """
+ if os.path.exists(cmd):
+ return cmd
+ for dir in ["/usr/local/sbin", "/usr/local/bin",
+ "/usr/sbin", "/usr/bin", "/sbin", "/bin"]:
+ file = os.path.join(dir, cmd)
+ if os.path.exists(file):
+ return file
+ raise ValueError('Missing command: %s' % cmd)
+
+
+def run(cmd, info=None):
+ """
+ Run a command and throw an exception if it fails.
+ Optionally, you can provide additional contextual info.
+
+ @param cmd: Command string.
+ @param reason: Optional string that explains the context of the failure.
+
+ @raise: SetupError if command fails.
+ """
+ print "Running '%s'" % cmd
+ cmd_name = cmd.split(' ')[0]
+ find_command(cmd_name)
+ status, output = commands.getstatusoutput(cmd)
+ if status:
+ e_msg = ('Command %s failed.\nStatus:%s\nOutput:%s' %
+ (cmd, status, output))
+ if info is not None:
+ e_msg += '\nAdditional Info:%s' % info
+ raise SetupError(e_msg)
+
+ return (status, output.strip())
+
+
+if __name__ == "__main__":
+ qemu_img_binary = os.environ['KVM_TEST_qemu_img_binary']
+ if not os.path.isabs(qemu_img_binary):
+ qemu_img_binary = os.path.join(KVM_TEST_DIR, qemu_img_binary)
+ if not os.path.exists(qemu_img_binary):
+ raise SetupError('The qemu-img binary that is supposed to be used '
+ '(%s) does not exist. Please verify your '
+ 'configuration' % qemu_img_binary)
+
+ run("%s create -f raw /tmp/enospc.raw 10G" % qemu_img_binary)
+ status, loopback_device = run("losetup -f")
+ run("losetup -f /tmp/enospc.raw")
+ run("pvcreate %s" % loopback_device)
+ run("vgcreate vgtest %s" % loopback_device)
+ run("lvcreate -L200M -n lvtest vgtest")
+ run("%s create -f qcow2 /dev/vgtest/lvtest 10G" % qemu_img_binary)
+ run("ln -s /dev/vgtest/lvtest /tmp/kvm_autotest_root/images/enospc.qcow2")
+
diff --git a/client/tests/kvm/tests/enospc.py b/client/tests/kvm/tests/enospc.py
new file mode 100644
index 0000000..21ea24e
--- /dev/null
+++ b/client/tests/kvm/tests/enospc.py
@@ -0,0 +1,68 @@
+import logging, commands, time, os
+from autotest_lib.client.common_lib import error
+from autotest_lib.client.bin import utils
+import kvm_test_utils
+
+
+def run_enospc(test, params, env):
+ """
+ ENOSPC test
+
+ 1) Create a virtual disk on lvm
+ 2) Boot up guest with two disks
+ 3) Continually write data to second disk
+ 4) Check images and extend second disk when no space
+ 5) Continue paused guest
+ 6) Repeat step 3~5 several times
+
+ @param test: KVM test object.
+ @param params: Dictionary with the test parameters.
+ @param env: Dictionary with test environment.
+ """
+ vm = env.get_vm(params["main_vm"])
+ vm.verify_alive()
+ login_timeout = int(params.get("login_timeout", 360))
+ session_serial = vm.wait_for_serial_login(timeout=login_timeout)
+
+ drive_format = params.get("drive_format")
+ if drive_format == "virtio":
+ devname = "/dev/vdb"
+ elif drive_format == "ide":
+ devname = "/dev/hdb"
+ elif drive_format == "scsi":
+ devname = "/dev/sdb"
+ cmd = params.get("background_cmd")
+ cmd %= devname
+ logging.info("Sending background cmd '%s'", cmd)
+ session_serial.sendline(cmd)
+
+ iterations = int(params.get("repeat_time", 40))
+ i = 0
+ pause_n = 0
+ while i < iterations:
+ status = vm.monitor.cmd("info status")
+ logging.debug(status)
+ if "paused" in status:
+ pause_n += 1
+ logging.info("Checking all images in use by the VM")
+ script_path = os.path.join(test.bindir, "scripts/check_image.py")
+ try:
+ cmd_result = utils.run('python %s' % script_path)
+ except error.CmdError, e:
+ logging.debug(e.result_obj.stdout)
+ logging.info("Guest paused, extending Logical Volume size")
+ try:
+ cmd_result = utils.run("lvextend -L +200M /dev/vgtest/lvtest")
+ except error.CmdError, e:
+ logging.debug(e.result_obj.stdout)
+ vm.monitor.cmd("cont")
+ time.sleep(10)
+ i += 1
+
+ if pause_n == 0:
+ raise error.TestFail("Guest didn't pause during loop")
+ else:
+ logging.info("Guest paused %s times from %s iterations",
+ pause_n, iterations)
+
+ logging.info("Final %s" % vm.monitor.cmd("info status"))
diff --git a/client/tests/kvm/tests_base.cfg.sample b/client/tests/kvm/tests_base.cfg.sample
index 97db3e7..2157a15 100644
--- a/client/tests/kvm/tests_base.cfg.sample
+++ b/client/tests/kvm/tests_base.cfg.sample
@@ -591,6 +591,20 @@ variants:
- fmt_raw:
image_format_stg = raw
+ - enospc:
+ type = enospc
+ images += " stg"
+ drive_werror = stop
+ drive_cache = none
+ image_name_stg = enospc
+ image_format_stg = qcow2
+ image_boot_stg = no
+ image_snapshot_stg = no
+ background_cmd = "nohup dd if=/dev/zero of=%s bs=1024 &"
+ pre_command += "qemu-img create -f raw /tmp/enospc.raw 10G && losetup /dev/loop0 /tmp/enospc.raw && pvcreate /dev/loop0 && vgcreate vgtest /dev/loop0 && lvcreate -L200M -n lvtest vgtest && qemu-img create -f qcow2 /dev/vgtest/lvtest 10G && ln -s /dev/vgtest/lvtest /tmp/kvm_autotest_root/images/enospc.qcow2;"
+ post_command += "lvremove -f vgtest; losetup -d /dev/loop0; rm -rf /tmp/enospc.raw /tmp/kvm_autotest_root/images/enospc.qcow2;"
+ kill_vm = yes
+
- qmp_basic: install setup unattended_install.cdrom
type = qmp_basic
--
1.7.3.4
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