diff --git a/tests/qemuxml2argvdata/disk-many-format-probing.args b/tests/qemuxml2argvdata/disk-many-format-probing.args
new file mode 100644
index 0000000000..cbb765a250
--- /dev/null
+++ b/tests/qemuxml2argvdata/disk-many-format-probing.args
@@ -0,0 +1,29 @@
+LC_ALL=C \
+PATH=/bin \
+HOME=/home/test \
+USER=test \
+LOGNAME=test \
+QEMU_AUDIO_DRV=none \
+/usr/bin/qemu-system-i686 \
+-name QEMUGuest1 \
+-S \
+-M pc \
+-m 214 \
+-smp 1,sockets=1,cores=1,threads=1 \
+-uuid c7a5fdbd-edaf-9455-926a-d65c16db1809 \
+-nographic \
+-nodefaults \
+-chardev socket,id=charmonitor,path=/tmp/lib/domain--1-QEMUGuest1/monitor.sock,\
+server,nowait \
+-mon chardev=charmonitor,id=monitor,mode=readline \
+-no-acpi \
+-boot c \
+-usb \
+-drive file=/dev/HostVG/QEMUGuest1,if=none,id=drive-ide0-0-0 \
+-device ide-drive,bus=ide.0,unit=0,drive=drive-ide0-0-0,id=ide0-0-0 \
+-drive file=/dev/HostVG/QEMUGuest2,if=none,id=drive-ide0-0-1 \
+-device ide-drive,bus=ide.0,unit=1,drive=drive-ide0-0-1,id=ide0-0-1 \
+-drive file=/tmp/data.img,if=none,id=drive-ide0-1-0 \
+-device ide-drive,bus=ide.1,unit=0,drive=drive-ide0-1-0,id=ide0-1-0 \
+-drive file=/tmp/logs.img,if=none,id=drive-ide0-1-1 \
+-device ide-drive,bus=ide.1,unit=1,drive=drive-ide0-1-1,id=ide0-1-1
diff --git a/tests/qemuxml2argvdata/disk-many-format-probing.xml b/tests/qemuxml2argvdata/disk-many-format-probing.xml
new file mode 100644
index 0000000000..5e34eb46e0
--- /dev/null
+++ b/tests/qemuxml2argvdata/disk-many-format-probing.xml
@@ -0,0 +1,48 @@
+<domain type='qemu'>
+  <name>QEMUGuest1</name>
+  <uuid>c7a5fdbd-edaf-9455-926a-d65c16db1809</uuid>
+  <memory unit='KiB'>219136</memory>
+  <currentMemory unit='KiB'>219136</currentMemory>
+  <vcpu placement='static'>1</vcpu>
+  <os>
+    <type arch='i686' machine='pc'>hvm</type>
+    <boot dev='hd'/>
+  </os>
+  <clock offset='utc'/>
+  <on_poweroff>destroy</on_poweroff>
+  <on_reboot>restart</on_reboot>
+  <on_crash>destroy</on_crash>
+  <devices>
+    <emulator>/usr/bin/qemu-system-i686</emulator>
+    <disk type='block' device='disk'>
+      <driver name='qemu'/>
+      <source dev='/dev/HostVG/QEMUGuest1'/>
+      <target dev='hda' bus='ide'/>
+      <address type='drive' controller='0' bus='0' target='0' unit='0'/>
+    </disk>
+    <disk type='block' device='disk'>
+      <driver name='qemu'/>
+      <source dev='/dev/HostVG/QEMUGuest2'/>
+      <target dev='hdb' bus='ide'/>
+      <address type='drive' controller='0' bus='0' target='0' unit='1'/>
+    </disk>
+    <disk type='file' device='disk'>
+      <driver name='qemu'/>
+      <source file='/tmp/data.img'/>
+      <target dev='hdc' bus='ide'/>
+      <address type='drive' controller='0' bus='1' target='0' unit='0'/>
+    </disk>
+    <disk type='file' device='disk'>
+      <driver name='qemu'/>
+      <source file='/tmp/logs.img'/>
+      <target dev='hdd' bus='ide'/>
+      <address type='drive' controller='0' bus='1' target='0' unit='1'/>
+    </disk>
+    <controller type='usb' index='0'/>
+    <controller type='ide' index='0'/>
+    <controller type='pci' index='0' model='pci-root'/>
+    <input type='mouse' bus='ps2'/>
+    <input type='keyboard' bus='ps2'/>
+    <memballoon model='none'/>
+  </devices>
+</domain>
diff --git a/tests/qemuxml2argvtest.c b/tests/qemuxml2argvtest.c
index 74f51ac325..731db9ed52 100644
--- a/tests/qemuxml2argvtest.c
+++ b/tests/qemuxml2argvtest.c
@@ -2998,6 +2998,12 @@ mymain(void)
             QEMU_CAPS_HDA_DUPLEX);
     DO_TEST("user-aliases2", QEMU_CAPS_DEVICE_IOH3420, QEMU_CAPS_ICH9_AHCI);
 
+    /* Test disks with format probing enabled for legacy reasons.
+     * New tests should not go in this section. */
+    driver.config->allowDiskFormatProbing = true;
+    DO_TEST("disk-many-format-probing", QEMU_CAPS_DRIVE_BOOT);
+    driver.config->allowDiskFormatProbing = false;
+
     if (getenv("LIBVIRT_SKIP_CLEANUP") == NULL)
         virFileDeleteTree(fakerootdir);
 
diff --git a/tests/qemuxml2xmloutdata/disk-many-format-probing.xml b/tests/qemuxml2xmloutdata/disk-many-format-probing.xml
new file mode 100644
index 0000000000..914b9b0937
--- /dev/null
+++ b/tests/qemuxml2xmloutdata/disk-many-format-probing.xml
@@ -0,0 +1,52 @@
+<domain type='qemu'>
+  <name>QEMUGuest1</name>
+  <uuid>c7a5fdbd-edaf-9455-926a-d65c16db1809</uuid>
+  <memory unit='KiB'>219136</memory>
+  <currentMemory unit='KiB'>219136</currentMemory>
+  <vcpu placement='static'>1</vcpu>
+  <os>
+    <type arch='i686' machine='pc'>hvm</type>
+    <boot dev='hd'/>
+  </os>
+  <clock offset='utc'/>
+  <on_poweroff>destroy</on_poweroff>
+  <on_reboot>restart</on_reboot>
+  <on_crash>destroy</on_crash>
+  <devices>
+    <emulator>/usr/bin/qemu-system-i686</emulator>
+    <disk type='block' device='disk'>
+      <driver name='qemu'/>
+      <source dev='/dev/HostVG/QEMUGuest1'/>
+      <target dev='hda' bus='ide'/>
+      <address type='drive' controller='0' bus='0' target='0' unit='0'/>
+    </disk>
+    <disk type='block' device='disk'>
+      <driver name='qemu'/>
+      <source dev='/dev/HostVG/QEMUGuest2'/>
+      <target dev='hdb' bus='ide'/>
+      <address type='drive' controller='0' bus='0' target='0' unit='1'/>
+    </disk>
+    <disk type='file' device='disk'>
+      <driver name='qemu'/>
+      <source file='/tmp/data.img'/>
+      <target dev='hdc' bus='ide'/>
+      <address type='drive' controller='0' bus='1' target='0' unit='0'/>
+    </disk>
+    <disk type='file' device='disk'>
+      <driver name='qemu'/>
+      <source file='/tmp/logs.img'/>
+      <target dev='hdd' bus='ide'/>
+      <address type='drive' controller='0' bus='1' target='0' unit='1'/>
+    </disk>
+    <controller type='usb' index='0'>
+      <address type='pci' domain='0x0000' bus='0x00' slot='0x01' function='0x2'/>
+    </controller>
+    <controller type='ide' index='0'>
+      <address type='pci' domain='0x0000' bus='0x00' slot='0x01' function='0x1'/>
+    </controller>
+    <controller type='pci' index='0' model='pci-root'/>
+    <input type='mouse' bus='ps2'/>
+    <input type='keyboard' bus='ps2'/>
+    <memballoon model='none'/>
+  </devices>
+</domain>
diff --git a/tests/qemuxml2xmltest.c b/tests/qemuxml2xmltest.c
index f079083eb4..41d2339f30 100644
--- a/tests/qemuxml2xmltest.c
+++ b/tests/qemuxml2xmltest.c
@@ -1361,6 +1361,12 @@ mymain(void)
 
     DO_TEST("user-aliases", NONE);
 
+    /* Test disks with format probing enabled for legacy reasons.
+     * New tests should not go in this section. */
+    driver.config->allowDiskFormatProbing = true;
+    DO_TEST("disk-many-format-probing", NONE);
+    driver.config->allowDiskFormatProbing = false;
+
     if (getenv("LIBVIRT_SKIP_CLEANUP") == NULL)
         virFileDeleteTree(fakerootdir);