From dd5fb82a6b69419a52aa56a57d1997b286fa843f Mon Sep 17 00:00:00 2001

From: John Snow <jsnow@redhat.com>

Date: Tue, 24 Jul 2018 12:25:31 +0200

Subject: [PATCH 229/268] iotests: add 222 to test basic fleecing

RH-Author: John Snow <jsnow@redhat.com>

Message-id: <20180718225511.14878-12-jsnow@redhat.com>

Patchwork-id: 81407

O-Subject: [RHEL-7.6 qemu-kvm-rhev PATCH 11/35] iotests: add 222 to test basic fleecing

Bugzilla: 1207657

RH-Acked-by: Eric Blake <eblake@redhat.com>

RH-Acked-by: Stefan Hajnoczi <stefanha@redhat.com>

RH-Acked-by: Fam Zheng <famz@redhat.com>

Signed-off-by: John Snow <jsnow@redhat.com>

Message-Id: <20180702194630.9360-3-jsnow@redhat.com>

Reviewed-by: Eric Blake <eblake@redhat.com>

Signed-off-by: Eric Blake <eblake@redhat.com>

(cherry picked from commit bacebdedbf921a2c641a34486ff543089d338f32)

Signed-off-by: John Snow <jsnow@redhat.com>

---

 tests/qemu-iotests/222     | 155 +++++++++++++++++++++++++++++++++++++++++++++

 tests/qemu-iotests/222.out |  67 ++++++++++++++++++++

 tests/qemu-iotests/group   |   1 +

 3 files changed, 223 insertions(+)

 create mode 100644 tests/qemu-iotests/222

 create mode 100644 tests/qemu-iotests/222.out

diff --git a/tests/qemu-iotests/222 b/tests/qemu-iotests/222

new file mode 100644

index 0000000..ff3bfc1

--- /dev/null

+++ b/tests/qemu-iotests/222

@@ -0,0 +1,155 @@

+#!/usr/bin/env python

+#

+# This test covers the basic fleecing workflow, which provides a

+# point-in-time snapshot of a node that can be queried over NBD.

+#

+# Copyright (C) 2018 Red Hat, Inc.

+# John helped, too.

+#

+# 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, see <http://www.gnu.org/licenses/>.

+#

+# Creator/Owner: John Snow <jsnow@redhat.com>

+

+import iotests

+from iotests import log, qemu_img, qemu_io, qemu_io_silent

+

+iotests.verify_platform(['linux'])

+

+patterns = [("0x5d", "0",         "64k"),

+            ("0xd5", "1M",        "64k"),

+            ("0xdc", "32M",       "64k"),

+            ("0xcd", "0x3ff0000", "64k")]  # 64M - 64K

+

+overwrite = [("0xab", "0",         "64k"), # Full overwrite

+             ("0xad", "0x00f8000", "64k"), # Partial-left (1M-32K)

+             ("0x1d", "0x2008000", "64k"), # Partial-right (32M+32K)

+             ("0xea", "0x3fe0000", "64k")] # Adjacent-left (64M - 128K)

+

+zeroes = [("0", "0x00f8000", "32k"), # Left-end of partial-left (1M-32K)

+          ("0", "0x2010000", "32k"), # Right-end of partial-right (32M+64K)

+          ("0", "0x3fe0000", "64k")] # overwrite[3]

+

+remainder = [("0xd5", "0x108000",  "32k"), # Right-end of partial-left [1]

+             ("0xdc", "32M",       "32k"), # Left-end of partial-right [2]

+             ("0xcd", "0x3ff0000", "64k")] # patterns[3]

+

+with iotests.FilePath('base.img') as base_img_path, \

+     iotests.FilePath('fleece.img') as fleece_img_path, \

+     iotests.FilePath('nbd.sock') as nbd_sock_path, \

+     iotests.VM() as vm:

+

+    log('--- Setting up images ---')

+    log('')

+

+    assert qemu_img('create', '-f', iotests.imgfmt, base_img_path, '64M') == 0

+    assert qemu_img('create', '-f', "qcow2", fleece_img_path, '64M') == 0

+

+    for p in patterns:

+        qemu_io('-f', iotests.imgfmt,

+                '-c', 'write -P%s %s %s' % p, base_img_path)

+

+    log('Done')

+

+    log('')

+    log('--- Launching VM ---')

+    log('')

+

+    vm.add_drive(base_img_path)

+    vm.launch()

+    log('Done')

+

+    log('')

+    log('--- Setting up Fleecing Graph ---')

+    log('')

+

+    src_node = "drive0"

+    tgt_node = "fleeceNode"

+

+    # create tgt_node backed by src_node

+    log(vm.qmp("blockdev-add", **{

+        "driver": "qcow2",

+        "node-name": tgt_node,

+        "file": {

+            "driver": "file",

+            "filename": fleece_img_path,

+        },

+        "backing": src_node,

+    }))

+

+    # Establish COW from source to fleecing node

+    log(vm.qmp("blockdev-backup",

+               device=src_node,

+               target=tgt_node,

+               sync="none"))

+

+    log('')

+    log('--- Setting up NBD Export ---')

+    log('')

+

+    nbd_uri = 'nbd+unix:///%s?socket=%s' % (tgt_node, nbd_sock_path)

+    log(vm.qmp("nbd-server-start",

+               **{"addr": { "type": "unix",

+                            "data": { "path": nbd_sock_path } } }))

+

+    log(vm.qmp("nbd-server-add", device=tgt_node))

+

+    log('')

+    log('--- Sanity Check ---')

+    log('')

+

+    for p in (patterns + zeroes):

+        cmd = "read -P%s %s %s" % p

+        log(cmd)

+        assert qemu_io_silent('-r', '-f', 'raw', '-c', cmd, nbd_uri) == 0

+

+    log('')

+    log('--- Testing COW ---')

+    log('')

+

+    for p in overwrite:

+        cmd = "write -P%s %s %s" % p

+        log(cmd)

+        log(vm.hmp_qemu_io(src_node, cmd))

+

+    log('')

+    log('--- Verifying Data ---')

+    log('')

+

+    for p in (patterns + zeroes):

+        cmd = "read -P%s %s %s" % p

+        log(cmd)

+        assert qemu_io_silent('-r', '-f', 'raw', '-c', cmd, nbd_uri) == 0

+

+    log('')

+    log('--- Cleanup ---')

+    log('')

+

+    log(vm.qmp('block-job-cancel', device=src_node))

+    log(vm.event_wait('BLOCK_JOB_CANCELLED'),

+        filters=[iotests.filter_qmp_event])

+    log(vm.qmp('nbd-server-stop'))

+    log(vm.qmp('blockdev-del', node_name=tgt_node))

+    vm.shutdown()

+

+    log('')

+    log('--- Confirming writes ---')

+    log('')

+

+    for p in (overwrite + remainder):

+        cmd = "read -P%s %s %s" % p

+        log(cmd)

+        assert qemu_io_silent(base_img_path, '-c', cmd) == 0

+

+    log('')

+    log('Done')

diff --git a/tests/qemu-iotests/222.out b/tests/qemu-iotests/222.out

new file mode 100644

index 0000000..48f336a

--- /dev/null

+++ b/tests/qemu-iotests/222.out

@@ -0,0 +1,67 @@

+--- Setting up images ---

+

+Done

+

+--- Launching VM ---

+

+Done

+

+--- Setting up Fleecing Graph ---

+

+{u'return': {}}

+{u'return': {}}

+

+--- Setting up NBD Export ---

+

+{u'return': {}}

+{u'return': {}}

+

+--- Sanity Check ---

+

+read -P0x5d 0 64k

+read -P0xd5 1M 64k

+read -P0xdc 32M 64k

+read -P0xcd 0x3ff0000 64k

+read -P0 0x00f8000 32k

+read -P0 0x2010000 32k

+read -P0 0x3fe0000 64k

+

+--- Testing COW ---

+

+write -P0xab 0 64k

+{u'return': u''}

+write -P0xad 0x00f8000 64k

+{u'return': u''}

+write -P0x1d 0x2008000 64k

+{u'return': u''}

+write -P0xea 0x3fe0000 64k

+{u'return': u''}

+

+--- Verifying Data ---

+

+read -P0x5d 0 64k

+read -P0xd5 1M 64k

+read -P0xdc 32M 64k

+read -P0xcd 0x3ff0000 64k

+read -P0 0x00f8000 32k

+read -P0 0x2010000 32k

+read -P0 0x3fe0000 64k

+

+--- Cleanup ---

+

+{u'return': {}}

+{u'timestamp': {u'seconds': 'SECS', u'microseconds': 'USECS'}, u'data': {u'device': u'drive0', u'type': u'backup', u'speed': 0, u'len': 67108864, u'offset': 393216}, u'event': u'BLOCK_JOB_CANCELLED'}

+{u'return': {}}

+{u'return': {}}

+

+--- Confirming writes ---

+

+read -P0xab 0 64k

+read -P0xad 0x00f8000 64k

+read -P0x1d 0x2008000 64k

+read -P0xea 0x3fe0000 64k

+read -P0xd5 0x108000 32k

+read -P0xdc 32M 32k

+read -P0xcd 0x3ff0000 64k

+

+Done

diff --git a/tests/qemu-iotests/group b/tests/qemu-iotests/group

index 11498fd..be55905 100644

--- a/tests/qemu-iotests/group

+++ b/tests/qemu-iotests/group

@@ -218,4 +218,5 @@

 217 rw auto quick

 218 rw auto quick

 219 rw auto

+222 rw auto quick

 226 auto quick

-- 

1.8.3.1