New APIs: lvm-set-filter and lvm-clear-filter.

These APIs allow you to change the device filter, the list of
block devices that LVM "sees".  Either you can set it to a fixed
list of devices / partitions, or you can clear it so that LVM sees
everything.

2 files changed, 93 insertions, 0 deletions

diff --git a/regressions/Makefile.am b/regressions/Makefile.am
index 385de458..ff003214 100644
--- a/regressions/Makefile.am
+++ b/regressions/Makefile.am
@@ -34,6 +34,7 @@ TESTS = \
 	test-cancellation-download-librarycancels.sh \
 	test-cancellation-upload-daemoncancels.sh \
 	test-find0.sh \
+	test-lvm-filtering.sh \
 	test-lvm-mapping.pl \
 	test-noexec-stack.pl \
 	test-qemudie-killsub.sh \
diff --git a/regressions/test-lvm-filtering.sh b/regressions/test-lvm-filtering.sh
new file mode 100755
index 00000000..d7c4e7c3
--- /dev/null
+++ b/regressions/test-lvm-filtering.sh
@@ -0,0 +1,92 @@
+#!/bin/bash -
+# libguestfs
+# Copyright (C) 2010 Red Hat Inc.
+#
+# 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, write to the Free Software
+# Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+
+# Test LVM device filtering.
+
+set -e
+
+rm -f test1.img test2.img
+
+actual=$(../fish/guestfish <<'EOF'
+sparse test1.img 1G
+sparse test2.img 1G
+
+run
+
+part-disk /dev/sda mbr
+part-disk /dev/sdb mbr
+
+pvcreate /dev/sda1
+pvcreate /dev/sdb1
+
+vgcreate VG1 /dev/sda1
+vgcreate VG2 /dev/sdb1
+
+# Should see VG1 and VG2
+vgs
+
+# Should see just VG1
+lvm-set-filter /dev/sda
+vgs
+lvm-set-filter /dev/sda1
+vgs
+
+# Should see just VG2
+lvm-set-filter /dev/sdb
+vgs
+lvm-set-filter /dev/sdb1
+vgs
+
+# Should see VG1 and VG2
+lvm-set-filter "/dev/sda /dev/sdb"
+vgs
+lvm-set-filter "/dev/sda1 /dev/sdb1"
+vgs
+lvm-set-filter "/dev/sda /dev/sdb1"
+vgs
+lvm-set-filter "/dev/sda1 /dev/sdb"
+vgs
+lvm-clear-filter
+vgs
+EOF
+)
+
+expected="VG1
+VG2
+VG1
+VG1
+VG2
+VG2
+VG1
+VG2
+VG1
+VG2
+VG1
+VG2
+VG1
+VG2
+VG1
+VG2"
+
+rm -f test1.img test2.img
+
+if [ "$actual" != "$expected" ]; then
+    echo "LVM filter test failed.  Actual output was:"
+    echo "$actual"
+    exit 1
+fi