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From 2fce649fb569ab21c224f387456c996428f8a251 Mon Sep 17 00:00:00 2001
Message-Id: <2fce649fb569ab21c224f387456c996428f8a251@dist-git>
From: =?UTF-8?q?J=C3=A1n=20Tomko?= <jtomko@redhat.com>
Date: Wed, 4 Mar 2020 12:42:41 +0100
Subject: [PATCH] conf: qemu: add virtiofs fsdriver type
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit
Introduce a new 'virtiofs' driver type for filesystem.
<filesystem type='mount' accessmode='passthrough'>
<driver type='virtiofs'/>
<source dir='/path'/>
<target dir='mount_tag'>
<address type='pci' domain='0x0000' bus='0x00' slot='0x02' function='0x0'/>
</filesystem>
Signed-off-by: Ján Tomko <jtomko@redhat.com>
Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
Reviewed-by: Peter Krempa <pkrempa@redhat.com>
Tested-by: Andrea Bolognani <abologna@redhat.com>
(cherry picked from commit ecc6ad6b90ad674a903c95d2a637f8b1b5833be2)
Signed-off-by: Ján Tomko <jtomko@redhat.com>
https://bugzilla.redhat.com/show_bug.cgi?id=1694166
Message-Id: <abe26807f06ed14b2be3cbd098461afc307e88e3.1583322090.git.jtomko@redhat.com>
Reviewed-by: Michal Privoznik <mprivozn@redhat.com>
---
docs/formatdomain.html.in | 12 ++-
docs/schemas/domaincommon.rng | 6 ++
src/conf/domain_conf.c | 1 +
src/conf/domain_conf.h | 1 +
src/qemu/qemu_command.c | 4 +
src/qemu/qemu_domain.c | 4 +
src/qemu/qemu_domain_address.c | 4 +
.../vhost-user-fs-fd-memory.xml | 39 ++++++++++
.../vhost-user-fs-hugepages.xml | 74 +++++++++++++++++++
.../vhost-user-fs-fd-memory.x86_64-latest.xml | 1 +
.../vhost-user-fs-hugepages.x86_64-latest.xml | 1 +
tests/qemuxml2xmltest.c | 3 +
12 files changed, 149 insertions(+), 1 deletion(-)
create mode 100644 tests/qemuxml2argvdata/vhost-user-fs-fd-memory.xml
create mode 100644 tests/qemuxml2argvdata/vhost-user-fs-hugepages.xml
create mode 120000 tests/qemuxml2xmloutdata/vhost-user-fs-fd-memory.x86_64-latest.xml
create mode 120000 tests/qemuxml2xmloutdata/vhost-user-fs-hugepages.x86_64-latest.xml
diff --git a/docs/formatdomain.html.in b/docs/formatdomain.html.in
index 50914a5207..337ab01316 100644
--- a/docs/formatdomain.html.in
+++ b/docs/formatdomain.html.in
@@ -3935,6 +3935,11 @@
&lt;target dir='/import/from/host'/&gt;
&lt;readonly/&gt;
&lt;/filesystem&gt;
+ &lt;filesystem type='mount' accessmode='passthrough'&gt;
+ &lt;driver type='virtiofs'/&gt;
+ &lt;source dir='/path'/&gt;
+ &lt;target dir='mount_tag'/&gt;
+ &lt;/filesystem&gt;
...
&lt;/devices&gt;
...</pre>
@@ -3963,6 +3968,9 @@
while the value <code>immediate</code> means that a host writeback
is immediately triggered for all pages touched during a guest file
write operation <span class="since">(since 0.9.10)</span>.
+ <span class="since">Since 6.2.0</span>, <code>type='virtiofs'</code>
+ is also supported. Using virtiofs requires setting up shared memory,
+ see the guide: <a href="kbase/virtiofs.html">Virtio-FS</a>
</dd>
<dt><code>template</code></dt>
<dd>
@@ -3998,7 +4006,9 @@
The filesystem element has an optional attribute <code>accessmode</code>
which specifies the security mode for accessing the source
<span class="since">(since 0.8.5)</span>. Currently this only works
- with <code>type='mount'</code> for the QEMU/KVM driver. The possible
+ with <code>type='mount'</code> for the QEMU/KVM driver.
+ For driver type <code>virtiofs</code>, only <code>passthrough</code> is
+ supported. For other driver types, the possible
values are:
<dl>
diff --git a/docs/schemas/domaincommon.rng b/docs/schemas/domaincommon.rng
index bfd8786ea8..5a9291b443 100644
--- a/docs/schemas/domaincommon.rng
+++ b/docs/schemas/domaincommon.rng
@@ -2645,6 +2645,12 @@
</optional>
<ref name='virtioOptions'/>
</group>
+ <group>
+ <attribute name="type">
+ <value>virtiofs</value>
+ </attribute>
+ <ref name='virtioOptions'/>
+ </group>
<empty/>
</choice>
</element>
diff --git a/src/conf/domain_conf.c b/src/conf/domain_conf.c
index 990c5bcc1e..31d4828802 100644
--- a/src/conf/domain_conf.c
+++ b/src/conf/domain_conf.c
@@ -476,6 +476,7 @@ VIR_ENUM_IMPL(virDomainFSDriver,
"loop",
"nbd",
"ploop",
+ "virtiofs",
);
VIR_ENUM_IMPL(virDomainFSAccessMode,
diff --git a/src/conf/domain_conf.h b/src/conf/domain_conf.h
index ef2c1b80f7..921cc42a57 100644
--- a/src/conf/domain_conf.h
+++ b/src/conf/domain_conf.h
@@ -771,6 +771,7 @@ typedef enum {
VIR_DOMAIN_FS_DRIVER_TYPE_LOOP,
VIR_DOMAIN_FS_DRIVER_TYPE_NBD,
VIR_DOMAIN_FS_DRIVER_TYPE_PLOOP,
+ VIR_DOMAIN_FS_DRIVER_TYPE_VIRTIOFS,
VIR_DOMAIN_FS_DRIVER_TYPE_LAST
} virDomainFSDriverType;
diff --git a/src/qemu/qemu_command.c b/src/qemu/qemu_command.c
index 252809a8d7..7fdf58f067 100644
--- a/src/qemu/qemu_command.c
+++ b/src/qemu/qemu_command.c
@@ -2695,6 +2695,10 @@ qemuBuildFilesystemCommandLine(virCommandPtr cmd,
return -1;
break;
+ case VIR_DOMAIN_FS_DRIVER_TYPE_VIRTIOFS:
+ /* TODO: vhost-user-fs-pci */
+ break;
+
case VIR_DOMAIN_FS_DRIVER_TYPE_LOOP:
case VIR_DOMAIN_FS_DRIVER_TYPE_NBD:
case VIR_DOMAIN_FS_DRIVER_TYPE_PLOOP:
diff --git a/src/qemu/qemu_domain.c b/src/qemu/qemu_domain.c
index ed35260712..402b079b09 100644
--- a/src/qemu/qemu_domain.c
+++ b/src/qemu/qemu_domain.c
@@ -8361,6 +8361,10 @@ qemuDomainDeviceDefValidateFS(virDomainFSDefPtr fs,
_("Filesystem driver type not supported"));
return -1;
+ case VIR_DOMAIN_FS_DRIVER_TYPE_VIRTIOFS:
+ /* TODO: vhost-user-fs-pci */
+ return 0;
+
case VIR_DOMAIN_FS_DRIVER_TYPE_LAST:
default:
virReportEnumRangeError(virDomainFSDriverType, fs->fsdriver);
diff --git a/src/qemu/qemu_domain_address.c b/src/qemu/qemu_domain_address.c
index 9e3bcc434d..3c6ac62ff5 100644
--- a/src/qemu/qemu_domain_address.c
+++ b/src/qemu/qemu_domain_address.c
@@ -690,6 +690,10 @@ qemuDomainDeviceCalculatePCIConnectFlags(virDomainDeviceDefPtr dev,
}
break;
+ case VIR_DOMAIN_FS_DRIVER_TYPE_VIRTIOFS:
+ /* vhost-user-fs-pci */
+ return virtioFlags;
+
case VIR_DOMAIN_FS_DRIVER_TYPE_LOOP:
case VIR_DOMAIN_FS_DRIVER_TYPE_NBD:
case VIR_DOMAIN_FS_DRIVER_TYPE_PLOOP:
diff --git a/tests/qemuxml2argvdata/vhost-user-fs-fd-memory.xml b/tests/qemuxml2argvdata/vhost-user-fs-fd-memory.xml
new file mode 100644
index 0000000000..a6b6279fb8
--- /dev/null
+++ b/tests/qemuxml2argvdata/vhost-user-fs-fd-memory.xml
@@ -0,0 +1,39 @@
+<domain type='kvm'>
+ <name>guest</name>
+ <uuid>126f2720-6f8e-45ab-a886-ec9277079a67</uuid>
+ <memory unit='KiB'>14680064</memory>
+ <currentMemory unit='KiB'>14680064</currentMemory>
+ <memoryBacking>
+ <source type='file'/>
+ <access mode='shared'/>
+ </memoryBacking>
+ <vcpu placement='static'>2</vcpu>
+ <os>
+ <type arch='x86_64' machine='pc'>hvm</type>
+ <boot dev='hd'/>
+ </os>
+ <cpu mode='custom' match='exact' check='none'>
+ <model fallback='forbid'>qemu64</model>
+ <numa>
+ <cell id='0' cpus='0-1' memory='14680064' unit='KiB' memAccess='shared'/>
+ </numa>
+ </cpu>
+ <clock offset='utc'/>
+ <on_poweroff>destroy</on_poweroff>
+ <on_reboot>restart</on_reboot>
+ <on_crash>destroy</on_crash>
+ <devices>
+ <emulator>/usr/bin/qemu-system-x86_64</emulator>
+ <controller type='usb' index='0' model='none'/>
+ <controller type='pci' index='0' model='pci-root'/>
+ <filesystem type='mount' accessmode='passthrough'>
+ <driver type='virtiofs'/>
+ <source dir='/path'/>
+ <target dir='mount_tag'/>
+ <address type='pci' domain='0x0000' bus='0x00' slot='0x02' function='0x0'/>
+ </filesystem>
+ <input type='mouse' bus='ps2'/>
+ <input type='keyboard' bus='ps2'/>
+ <memballoon model='none'/>
+ </devices>
+</domain>
diff --git a/tests/qemuxml2argvdata/vhost-user-fs-hugepages.xml b/tests/qemuxml2argvdata/vhost-user-fs-hugepages.xml
new file mode 100644
index 0000000000..70df7b890d
--- /dev/null
+++ b/tests/qemuxml2argvdata/vhost-user-fs-hugepages.xml
@@ -0,0 +1,74 @@
+<domain type='qemu'>
+ <name>guest</name>
+ <uuid>1ccfd97d-5eb4-478a-bbe6-88d254c16db7</uuid>
+ <memory unit='KiB'>4194304</memory>
+ <currentMemory unit='KiB'>4194304</currentMemory>
+ <memoryBacking>
+ <hugepages>
+ <page size='2048' unit='KiB'/>
+ </hugepages>
+ <access mode='shared'/>
+ </memoryBacking>
+ <vcpu placement='static'>2</vcpu>
+ <os>
+ <type arch='x86_64' machine='q35'>hvm</type>
+ <boot dev='hd'/>
+ </os>
+ <features>
+ <acpi/>
+ <apic/>
+ </features>
+ <cpu mode='custom' match='exact' check='none'>
+ <model fallback='forbid'>qemu64</model>
+ <numa>
+ <cell id='0' cpus='0-1' memory='2097152' unit='KiB' memAccess='shared'/>
+ </numa>
+ </cpu>
+ <clock offset='utc'/>
+ <on_poweroff>destroy</on_poweroff>
+ <on_reboot>restart</on_reboot>
+ <on_crash>destroy</on_crash>
+ <devices>
+ <emulator>/usr/bin/qemu-system-x86_64</emulator>
+ <disk type='file' device='disk'>
+ <driver name='qemu' type='qcow2'/>
+ <source file='/var/lib/libvirt/images/guest.qcow2'/>
+ <target dev='vda' bus='virtio'/>
+ <address type='pci' domain='0x0000' bus='0x04' slot='0x00' function='0x0'/>
+ </disk>
+ <controller type='usb' index='0' model='none'/>
+ <controller type='sata' index='0'>
+ <address type='pci' domain='0x0000' bus='0x00' slot='0x1f' function='0x2'/>
+ </controller>
+ <controller type='pci' index='0' model='pcie-root'/>
+ <controller type='pci' index='1' model='pcie-root-port'>
+ <model name='pcie-root-port'/>
+ <target chassis='1' port='0x8'/>
+ <address type='pci' domain='0x0000' bus='0x00' slot='0x01' function='0x0' multifunction='on'/>
+ </controller>
+ <controller type='pci' index='2' model='pcie-root-port'>
+ <model name='pcie-root-port'/>
+ <target chassis='2' port='0x9'/>
+ <address type='pci' domain='0x0000' bus='0x00' slot='0x01' function='0x1'/>
+ </controller>
+ <controller type='pci' index='3' model='pcie-root-port'>
+ <model name='pcie-root-port'/>
+ <target chassis='3' port='0xa'/>
+ <address type='pci' domain='0x0000' bus='0x00' slot='0x01' function='0x2'/>
+ </controller>
+ <controller type='pci' index='4' model='pcie-root-port'>
+ <model name='pcie-root-port'/>
+ <target chassis='4' port='0xb'/>
+ <address type='pci' domain='0x0000' bus='0x00' slot='0x01' function='0x3'/>
+ </controller>
+ <filesystem type='mount' accessmode='passthrough'>
+ <driver type='virtiofs'/>
+ <source dir='/path'/>
+ <target dir='mount_tag'/>
+ <address type='pci' domain='0x0000' bus='0x01' slot='0x00' function='0x0'/>
+ </filesystem>
+ <input type='mouse' bus='ps2'/>
+ <input type='keyboard' bus='ps2'/>
+ <memballoon model='none'/>
+ </devices>
+</domain>
diff --git a/tests/qemuxml2xmloutdata/vhost-user-fs-fd-memory.x86_64-latest.xml b/tests/qemuxml2xmloutdata/vhost-user-fs-fd-memory.x86_64-latest.xml
new file mode 120000
index 0000000000..fbc552ef94
--- /dev/null
+++ b/tests/qemuxml2xmloutdata/vhost-user-fs-fd-memory.x86_64-latest.xml
@@ -0,0 +1 @@
+../qemuxml2argvdata/vhost-user-fs-fd-memory.xml
\ No newline at end of file
diff --git a/tests/qemuxml2xmloutdata/vhost-user-fs-hugepages.x86_64-latest.xml b/tests/qemuxml2xmloutdata/vhost-user-fs-hugepages.x86_64-latest.xml
new file mode 120000
index 0000000000..0c0f05b254
--- /dev/null
+++ b/tests/qemuxml2xmloutdata/vhost-user-fs-hugepages.x86_64-latest.xml
@@ -0,0 +1 @@
+../qemuxml2argvdata/vhost-user-fs-hugepages.xml
\ No newline at end of file
diff --git a/tests/qemuxml2xmltest.c b/tests/qemuxml2xmltest.c
index d58259587b..f77f59fa3c 100644
--- a/tests/qemuxml2xmltest.c
+++ b/tests/qemuxml2xmltest.c
@@ -1428,6 +1428,9 @@ mymain(void)
DO_TEST("vhost-vsock-ccw-auto", QEMU_CAPS_DEVICE_VHOST_VSOCK,
QEMU_CAPS_CCW);
+ DO_TEST_CAPS_LATEST("vhost-user-fs-fd-memory");
+ DO_TEST_CAPS_LATEST("vhost-user-fs-hugepages");
+
DO_TEST("riscv64-virt",
QEMU_CAPS_DEVICE_VIRTIO_MMIO);
DO_TEST("riscv64-virt-pci",
--
2.25.1
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