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nbdkit/0006-data-Add-example-of-partitioned-7-EB-disk-and-test.patch
Richard W.M. Jones 7d3de34ec7 Add upstream patches after 1.5.10.
2018-08-27 19:41:52 +01:00

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From 2c548ffcf2745f23a504d646f64a20c984bc2e32 Mon Sep 17 00:00:00 2001
From: "Richard W.M. Jones" <rjones@redhat.com>
Date: Mon, 27 Aug 2018 18:48:51 +0100
Subject: [PATCH 6/6] data: Add example of partitioned 7 EB disk, and test.
---
plugins/data/nbdkit-data-plugin.pod | 48 ++++++++++-
tests/Makefile.am | 2 +
tests/test-data-7E.sh | 128 ++++++++++++++++++++++++++++
3 files changed, 177 insertions(+), 1 deletion(-)
create mode 100755 tests/test-data-7E.sh
diff --git a/plugins/data/nbdkit-data-plugin.pod b/plugins/data/nbdkit-data-plugin.pod
index c174abb..5d66f43 100644
--- a/plugins/data/nbdkit-data-plugin.pod
+++ b/plugins/data/nbdkit-data-plugin.pod
@@ -56,7 +56,7 @@ base64 decoding of C<MTIz>), followed by S<1M - 3 bytes> of zeroes.
@0x1fe 0x55 0xaa" \
size=1M
-The last example was created by running:
+This example was created by running:
$ rm -f disk
$ truncate -s 1M disk
@@ -75,6 +75,52 @@ The last example was created by running:
and then translating the disk data and offsets into the C<data>
string (see L</DATA FORMAT>).
+=item Create a 7 EB (exabyte) disk with one empty GPT-formatted partition:
+
+The data plugin supports huge sparse virtual disks, up to the maximum
+size supported by nbdkit itself (S<2⁶³-1 bytes> =
+S<8 exabytes - 1 byte>). These cause all sorts of problems for
+software and so make excellent test cases. To partition such a huge
+disk requires the GPT (GUID Partition Table) format since MBR is
+limited to just 2 TB.
+
+ nbdkit data data="
+ @0x1c0 2 0 0xee 0xfe 0xff 0xff 0x01 0 0 0 0xff 0xff 0xff 0xff
+ @0x1fe 0x55 0xaa
+ @0x200 0x45 0x46 0x49 0x20 0x50 0x41 0x52 0x54
+ 0 0 1 0 0x5c 0 0 0
+ 0x9b 0xe5 0x6a 0xc5 0 0 0 0 1 0 0 0 0 0 0 0
+ 0xff 0xff 0xff 0xff 0xff 0xff 0x37 0 0x22 0 0 0 0 0 0 0
+ 0xde 0xff 0xff 0xff 0xff 0xff 0x37 0
+ 0x72 0xb6 0x9e 0x0c 0x6b 0x76 0xb0 0x4f
+ 0xb3 0x94 0xb2 0xf1 0x61 0xec 0xdd 0x3c 2 0 0 0 0 0 0 0
+ 0x80 0 0 0 0x80 0 0 0 0x79 0x8a 0xd0 0x7e 0 0 0 0
+ @0x400 0xaf 0x3d 0xc6 0x0f 0x83 0x84 0x72 0x47
+ 0x8e 0x79 0x3d 0x69 0xd8 0x47 0x7d 0xe4
+ 0xd5 0x19 0x46 0x95 0xe3 0x82 0xa8 0x4c
+ 0x95 0x82 0x7a 0xbe 0x1c 0xfc 0x62 0x90
+ 0x80 0 0 0 0 0 0 0 0x80 0xff 0xff 0xff 0xff 0xff 0x37 0
+ 0 0 0 0 0 0 0 0 0x70 0 0x31 0 0 0 0 0
+ @0x6fffffffffffbe00
+ 0xaf 0x3d 0xc6 0x0f 0x83 0x84 0x72 0x47
+ 0x8e 0x79 0x3d 0x69 0xd8 0x47 0x7d 0xe4
+ 0xd5 0x19 0x46 0x95 0xe3 0x82 0xa8 0x4c
+ 0x95 0x82 0x7a 0xbe 0x1c 0xfc 0x62 0x90
+ 0x80 0 0 0 0 0 0 0 0x80 0xff 0xff 0xff 0xff 0xff 0x37 0
+ 0 0 0 0 0 0 0 0 0x70 0 0x31 0 0 0 0 0
+ @0x6ffffffffffffe00
+ 0x45 0x46 0x49 0x20 0x50 0x41 0x52 0x54
+ 0 0 1 0 0x5c 0 0 0
+ 0x6c 0x76 0xa1 0xa0 0 0 0 0
+ 0xff 0xff 0xff 0xff 0xff 0xff 0x37 0
+ 1 0 0 0 0 0 0 0 0x22 0 0 0 0 0 0 0
+ 0xde 0xff 0xff 0xff 0xff 0xff 0x37 0
+ 0x72 0xb6 0x9e 0x0c 0x6b 0x76 0xb0 0x4f
+ 0xb3 0x94 0xb2 0xf1 0x61 0xec 0xdd 0x3c
+ 0xdf 0xff 0xff 0xff 0xff 0xff 0x37 0
+ 0x80 0 0 0 0x80 0 0 0 0x79 0x8a 0xd0 0x7e 0 0 0 0
+ " size=7E
+
=back
=head1 PARAMETERS
diff --git a/tests/Makefile.am b/tests/Makefile.am
index 1dbfd32..aa7c0e2 100644
--- a/tests/Makefile.am
+++ b/tests/Makefile.am
@@ -48,6 +48,7 @@ EXTRA_DIST = \
test-captive.sh \
test-cow.sh \
test-cxx.sh \
+ test-data-7E.sh \
test-data-base64.sh \
test-data-raw.sh \
test-debug-flags.sh \
@@ -281,6 +282,7 @@ endif HAVE_GUESTFISH
# data plugin test.
LIBGUESTFS_TESTS += test-data
TESTS += \
+ test-data-7E.sh \
test-data-base64.sh \
test-data-raw.sh
diff --git a/tests/test-data-7E.sh b/tests/test-data-7E.sh
new file mode 100755
index 0000000..8327511
--- /dev/null
+++ b/tests/test-data-7E.sh
@@ -0,0 +1,128 @@
+#!/usr/bin/env bash
+# nbdkit
+# Copyright (C) 2018 Red Hat Inc.
+# All rights reserved.
+#
+# Redistribution and use in source and binary forms, with or without
+# modification, are permitted provided that the following conditions are
+# met:
+#
+# * Redistributions of source code must retain the above copyright
+# notice, this list of conditions and the following disclaimer.
+#
+# * Redistributions in binary form must reproduce the above copyright
+# notice, this list of conditions and the following disclaimer in the
+# documentation and/or other materials provided with the distribution.
+#
+# * Neither the name of Red Hat nor the names of its contributors may be
+# used to endorse or promote products derived from this software without
+# specific prior written permission.
+#
+# THIS SOFTWARE IS PROVIDED BY RED HAT AND CONTRIBUTORS ''AS IS'' AND
+# ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
+# THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
+# PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL RED HAT OR
+# CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+# LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
+# USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
+# ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
+# OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
+# OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+# SUCH DAMAGE.
+
+# Test the data plugin creating a 7 EB partitioned disk, and
+# the partition filter on top.
+
+set -e
+set -x
+
+files="data-7E.out data-7E.pid data-7E.sock"
+rm -f $files
+
+# Test that qemu-io works
+if ! qemu-io --help >/dev/null; then
+ echo "$0: missing or broken qemu-io"
+ exit 77
+fi
+
+# Run nbdkit.
+nbdkit -P data-7E.pid -U data-7E.sock \
+ --filter=partition \
+ data size=7E partition=1 \
+ data="
+ @0x1c0 2 0 0xee 0xfe 0xff 0xff 0x01 0 0 0 0xff 0xff 0xff 0xff
+ @0x1fe 0x55 0xaa
+ @0x200 0x45 0x46 0x49 0x20 0x50 0x41 0x52 0x54
+ 0 0 1 0 0x5c 0 0 0
+ 0x9b 0xe5 0x6a 0xc5 0 0 0 0 1 0 0 0 0 0 0 0
+ 0xff 0xff 0xff 0xff 0xff 0xff 0x37 0 0x22 0 0 0 0 0 0 0
+ 0xde 0xff 0xff 0xff 0xff 0xff 0x37 0
+ 0x72 0xb6 0x9e 0x0c 0x6b 0x76 0xb0 0x4f
+ 0xb3 0x94 0xb2 0xf1 0x61 0xec 0xdd 0x3c 2 0 0 0 0 0 0 0
+ 0x80 0 0 0 0x80 0 0 0 0x79 0x8a 0xd0 0x7e 0 0 0 0
+ @0x400 0xaf 0x3d 0xc6 0x0f 0x83 0x84 0x72 0x47
+ 0x8e 0x79 0x3d 0x69 0xd8 0x47 0x7d 0xe4
+ 0xd5 0x19 0x46 0x95 0xe3 0x82 0xa8 0x4c
+ 0x95 0x82 0x7a 0xbe 0x1c 0xfc 0x62 0x90
+ 0x80 0 0 0 0 0 0 0 0x80 0xff 0xff 0xff 0xff 0xff 0x37 0
+ 0 0 0 0 0 0 0 0 0x70 0 0x31 0 0 0 0 0
+ @0x6fffffffffffbe00
+ 0xaf 0x3d 0xc6 0x0f 0x83 0x84 0x72 0x47
+ 0x8e 0x79 0x3d 0x69 0xd8 0x47 0x7d 0xe4
+ 0xd5 0x19 0x46 0x95 0xe3 0x82 0xa8 0x4c
+ 0x95 0x82 0x7a 0xbe 0x1c 0xfc 0x62 0x90
+ 0x80 0 0 0 0 0 0 0 0x80 0xff 0xff 0xff 0xff 0xff 0x37 0
+ 0 0 0 0 0 0 0 0 0x70 0 0x31 0 0 0 0 0
+ @0x6ffffffffffffe00
+ 0x45 0x46 0x49 0x20 0x50 0x41 0x52 0x54
+ 0 0 1 0 0x5c 0 0 0
+ 0x6c 0x76 0xa1 0xa0 0 0 0 0
+ 0xff 0xff 0xff 0xff 0xff 0xff 0x37 0
+ 1 0 0 0 0 0 0 0 0x22 0 0 0 0 0 0 0
+ 0xde 0xff 0xff 0xff 0xff 0xff 0x37 0
+ 0x72 0xb6 0x9e 0x0c 0x6b 0x76 0xb0 0x4f
+ 0xb3 0x94 0xb2 0xf1 0x61 0xec 0xdd 0x3c
+ 0xdf 0xff 0xff 0xff 0xff 0xff 0x37 0
+ 0x80 0 0 0 0x80 0 0 0 0x79 0x8a 0xd0 0x7e 0 0 0 0
+ "
+
+# We may have to wait a short time for the pid file to appear.
+for i in `seq 1 10`; do
+ if test -f data-7E.pid; then
+ break
+ fi
+ sleep 1
+done
+if ! test -f data-7E.pid; then
+ echo "$0: PID file was not created"
+ exit 1
+fi
+
+pid="$(cat data-7E.pid)"
+
+# Kill the nbdkit process on exit.
+cleanup ()
+{
+ status=$?
+ trap '' INT QUIT TERM EXIT ERR
+ echo $0: cleanup: exit code $status
+
+ kill $pid
+ rm -f $files
+
+ exit $status
+}
+trap cleanup INT QUIT TERM EXIT ERR
+
+# Since we're reading the empty first partition, any read returns zeroes.
+qemu-io -r -f raw 'nbd+unix://?socket=data-7E.sock' \
+ -c 'r -v 498 16' | grep -E '^[[:xdigit:]]+:' > data-7E.out
+if [ "$(cat data-7E.out)" != "000001f2: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................" ]
+then
+ echo "$0: unexpected pattern:"
+ cat data-7E.out
+ exit 1
+fi
+
+# The cleanup() function is called implicitly on exit.
--
2.18.0
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