[libvirt] [PATCH v2 0/2] Detect misconfiguration between disk bus and disk address
by Marc Hartmayer
This patch series adds the functionality to detect a misconfiguration
between disk bus type and disk address type for disks that are using
the address type virDomainDeviceDriveAddress. It also adds a test for
it.
A check for other bus types may be needed. This may require a driver
specific function, as it is already implemented in
virDomainDeviceDefPostParse(), for example.
Changelog:
- v1 -> v2:
+ Use full enumeration of the bus types
+ Add warning for unexpected bus type
Marc Hartmayer (2):
conf: Detect misconfiguration between disk bus and disk address
tests: Add tests for disk configuration validation
src/conf/domain_conf.c | 56 ++++++++++++++++++++++
.../qemuxml2argv-disk-fdc-incompatible-address.xml | 22 +++++++++
.../qemuxml2argv-disk-ide-incompatible-address.xml | 23 +++++++++
...qemuxml2argv-disk-sata-incompatible-address.xml | 23 +++++++++
...qemuxml2argv-disk-scsi-incompatible-address.xml | 24 ++++++++++
tests/qemuxml2argvtest.c | 8 ++++
6 files changed, 156 insertions(+)
create mode 100644 tests/qemuxml2argvdata/qemuxml2argv-disk-fdc-incompatible-address.xml
create mode 100644 tests/qemuxml2argvdata/qemuxml2argv-disk-ide-incompatible-address.xml
create mode 100644 tests/qemuxml2argvdata/qemuxml2argv-disk-sata-incompatible-address.xml
create mode 100644 tests/qemuxml2argvdata/qemuxml2argv-disk-scsi-incompatible-address.xml
--
2.5.5
7 years, 11 months
[libvirt] [PATCH] Changes to support Veritas HyperScale (VxHS) block device protocol with qemu-kvm
by Ashish Mittal
Sample XML for a vxhs vdisk is as follows:
<disk type='network' device='disk'>
<driver name='qemu' type='raw' cache='none'/>
<source protocol='vxhs' name='eb90327c-8302-4725-9e1b-4e85ed4dc251'>
<host name='192.168.0.1' port='9999'/>
</source>
<backingStore/>
<target dev='vda' bus='virtio'/>
<serial>eb90327c-8302-4725-9e1b-4e85ed4dc251</serial>
<alias name='virtio-disk0'/>
<address type='pci' domain='0x0000' bus='0x00' slot='0x04' function='0x0'/>
</disk>
Signed-off-by: Ashish Mittal <Ashish.Mittal(a)veritas.com>
---
docs/formatdomain.html.in | 12 ++++++--
docs/schemas/domaincommon.rng | 1 +
src/qemu/qemu_command.c | 4 +++
src/qemu/qemu_driver.c | 3 ++
src/qemu/qemu_parse_command.c | 25 ++++++++++++++++
src/util/virstoragefile.c | 4 ++-
src/util/virstoragefile.h | 1 +
.../qemuxml2argv-disk-drive-network-vxhs.args | 23 +++++++++++++++
.../qemuxml2argv-disk-drive-network-vxhs.xml | 34 ++++++++++++++++++++++
tests/qemuxml2argvtest.c | 1 +
10 files changed, 104 insertions(+), 4 deletions(-)
create mode 100644 tests/qemuxml2argvdata/qemuxml2argv-disk-drive-network-vxhs.args
create mode 100644 tests/qemuxml2argvdata/qemuxml2argv-disk-drive-network-vxhs.xml
diff --git a/docs/formatdomain.html.in b/docs/formatdomain.html.in
index 11b3330..ade35a3 100644
--- a/docs/formatdomain.html.in
+++ b/docs/formatdomain.html.in
@@ -2276,9 +2276,9 @@
<dd>
The <code>protocol</code> attribute specifies the protocol to
access to the requested image. Possible values are "nbd",
- "iscsi", "rbd", "sheepdog" or "gluster". If the
- <code>protocol</code> attribute is "rbd", "sheepdog" or
- "gluster", an additional attribute <code>name</code> is
+ "iscsi", "rbd", "sheepdog", "gluster" or "vxhs". If the
+ <code>protocol</code> attribute is "rbd", "sheepdog", "gluster"
+ or "vxhs", an additional attribute <code>name</code> is
mandatory to specify which volume/image will be used. For "nbd",
the <code>name</code> attribute is optional. For "iscsi"
(<span class="since">since 1.0.4</span>), the <code>name</code>
@@ -2388,6 +2388,12 @@
<td> one or more (<span class="since">Since 2.1.0</span>), just one prior to that </td>
<td> 24007 </td>
</tr>
+ <tr>
+ <td> vxhs </td>
+ <td> a server running Veritas HyperScale daemon </td>
+ <td> only one </td>
+ <td> 9999 </td>
+ </tr>
</table>
<p>
gluster supports "tcp", "rdma", "unix" as valid values for the
diff --git a/docs/schemas/domaincommon.rng b/docs/schemas/domaincommon.rng
index 19d45fd..e569e0a 100644
--- a/docs/schemas/domaincommon.rng
+++ b/docs/schemas/domaincommon.rng
@@ -1464,6 +1464,7 @@
<value>ftp</value>
<value>ftps</value>
<value>tftp</value>
+ <value>vxhs</value>
</choice>
</attribute>
<optional>
diff --git a/src/qemu/qemu_command.c b/src/qemu/qemu_command.c
index 4a5fce3..c7b95aa 100644
--- a/src/qemu/qemu_command.c
+++ b/src/qemu/qemu_command.c
@@ -491,6 +491,9 @@ qemuNetworkDriveGetPort(int protocol,
/* no default port specified */
return 0;
+ case VIR_STORAGE_NET_PROTOCOL_VXHS:
+ return 9999;
+
case VIR_STORAGE_NET_PROTOCOL_RBD:
case VIR_STORAGE_NET_PROTOCOL_LAST:
case VIR_STORAGE_NET_PROTOCOL_NONE:
@@ -1034,6 +1037,7 @@ qemuBuildNetworkDriveStr(virStorageSourcePtr src,
case VIR_STORAGE_NET_PROTOCOL_TFTP:
case VIR_STORAGE_NET_PROTOCOL_ISCSI:
case VIR_STORAGE_NET_PROTOCOL_GLUSTER:
+ case VIR_STORAGE_NET_PROTOCOL_VXHS:
ret = qemuBuildNetworkDriveURI(src, secinfo);
break;
diff --git a/src/qemu/qemu_driver.c b/src/qemu/qemu_driver.c
index a82e58b..4910004 100644
--- a/src/qemu/qemu_driver.c
+++ b/src/qemu/qemu_driver.c
@@ -13724,6 +13724,7 @@ qemuDomainSnapshotPrepareDiskExternalBackingInactive(virDomainDiskDefPtr disk)
case VIR_STORAGE_NET_PROTOCOL_FTPS:
case VIR_STORAGE_NET_PROTOCOL_TFTP:
case VIR_STORAGE_NET_PROTOCOL_SSH:
+ case VIR_STORAGE_NET_PROTOCOL_VXHS:
case VIR_STORAGE_NET_PROTOCOL_LAST:
virReportError(VIR_ERR_INTERNAL_ERROR,
_("external inactive snapshots are not supported on "
@@ -13787,6 +13788,7 @@ qemuDomainSnapshotPrepareDiskExternalOverlayActive(virDomainSnapshotDiskDefPtr d
case VIR_STORAGE_NET_PROTOCOL_FTPS:
case VIR_STORAGE_NET_PROTOCOL_TFTP:
case VIR_STORAGE_NET_PROTOCOL_SSH:
+ case VIR_STORAGE_NET_PROTOCOL_VXHS:
case VIR_STORAGE_NET_PROTOCOL_LAST:
virReportError(VIR_ERR_INTERNAL_ERROR,
_("external active snapshots are not supported on "
@@ -13932,6 +13934,7 @@ qemuDomainSnapshotPrepareDiskInternal(virConnectPtr conn,
case VIR_STORAGE_NET_PROTOCOL_FTPS:
case VIR_STORAGE_NET_PROTOCOL_TFTP:
case VIR_STORAGE_NET_PROTOCOL_SSH:
+ case VIR_STORAGE_NET_PROTOCOL_VXHS:
case VIR_STORAGE_NET_PROTOCOL_LAST:
virReportError(VIR_ERR_INTERNAL_ERROR,
_("internal inactive snapshots are not supported on "
diff --git a/src/qemu/qemu_parse_command.c b/src/qemu/qemu_parse_command.c
index c3b27aa..f2edc28 100644
--- a/src/qemu/qemu_parse_command.c
+++ b/src/qemu/qemu_parse_command.c
@@ -263,6 +263,16 @@ qemuParseNBDString(virDomainDiskDefPtr disk)
return -1;
}
+static int
+qemuParseVxHSString(virDomainDiskDefPtr def)
+{
+ virURIPtr uri = NULL;
+
+ if (!(uri = virURIParse(def->src->path)))
+ return -1;
+
+ return qemuParseDriveURIString(def, uri, "vxhs");
+}
/*
* This method takes a string representing a QEMU command line ARGV set
@@ -737,6 +747,12 @@ qemuParseCommandLineDisk(virDomainXMLOptionPtr xmlopt,
if (VIR_STRDUP(def->src->path, vdi) < 0)
goto error;
}
+ } else if (STRPREFIX(def->src->path, "vxhs:")) {
+ def->src->type = VIR_STORAGE_TYPE_NETWORK;
+ def->src->protocol = VIR_STORAGE_NET_PROTOCOL_VXHS;
+
+ if (qemuParseVxHSString(def) < 0)
+ goto error;
} else {
def->src->type = VIR_STORAGE_TYPE_FILE;
}
@@ -1933,6 +1949,10 @@ qemuParseCommandLine(virCapsPtr caps,
disk->src->type = VIR_STORAGE_TYPE_NETWORK;
disk->src->protocol = VIR_STORAGE_NET_PROTOCOL_SHEEPDOG;
val += strlen("sheepdog:");
+ } else if (STRPREFIX(val, "vxhs:")) {
+ disk->src->type = VIR_STORAGE_TYPE_NETWORK;
+ disk->src->protocol = VIR_STORAGE_NET_PROTOCOL_VXHS;
+ val += strlen("vxhs:");
} else {
disk->src->type = VIR_STORAGE_TYPE_FILE;
}
@@ -2009,6 +2029,11 @@ qemuParseCommandLine(virCapsPtr caps,
goto error;
break;
+ case VIR_STORAGE_NET_PROTOCOL_VXHS:
+ if (qemuParseVxHSString(disk) < 0)
+ goto error;
+
+ break;
case VIR_STORAGE_NET_PROTOCOL_HTTP:
case VIR_STORAGE_NET_PROTOCOL_HTTPS:
case VIR_STORAGE_NET_PROTOCOL_FTP:
diff --git a/src/util/virstoragefile.c b/src/util/virstoragefile.c
index 272db67..a730a01 100644
--- a/src/util/virstoragefile.c
+++ b/src/util/virstoragefile.c
@@ -86,7 +86,8 @@ VIR_ENUM_IMPL(virStorageNetProtocol, VIR_STORAGE_NET_PROTOCOL_LAST,
"ftp",
"ftps",
"tftp",
- "ssh")
+ "ssh",
+ "vxhs")
VIR_ENUM_IMPL(virStorageNetHostTransport, VIR_STORAGE_NET_HOST_TRANS_LAST,
"tcp",
@@ -2634,6 +2635,7 @@ virStorageSourceParseBackingColon(virStorageSourcePtr src,
case VIR_STORAGE_NET_PROTOCOL_ISCSI:
case VIR_STORAGE_NET_PROTOCOL_GLUSTER:
case VIR_STORAGE_NET_PROTOCOL_SSH:
+ case VIR_STORAGE_NET_PROTOCOL_VXHS:
virReportError(VIR_ERR_INTERNAL_ERROR,
_("malformed backing store path for protocol %s"),
protocol);
diff --git a/src/util/virstoragefile.h b/src/util/virstoragefile.h
index 3d09468..88dff36 100644
--- a/src/util/virstoragefile.h
+++ b/src/util/virstoragefile.h
@@ -132,6 +132,7 @@ typedef enum {
VIR_STORAGE_NET_PROTOCOL_FTPS,
VIR_STORAGE_NET_PROTOCOL_TFTP,
VIR_STORAGE_NET_PROTOCOL_SSH,
+ VIR_STORAGE_NET_PROTOCOL_VXHS,
VIR_STORAGE_NET_PROTOCOL_LAST
} virStorageNetProtocol;
diff --git a/tests/qemuxml2argvdata/qemuxml2argv-disk-drive-network-vxhs.args b/tests/qemuxml2argvdata/qemuxml2argv-disk-drive-network-vxhs.args
new file mode 100644
index 0000000..3d37b00
--- /dev/null
+++ b/tests/qemuxml2argvdata/qemuxml2argv-disk-drive-network-vxhs.args
@@ -0,0 +1,23 @@
+LC_ALL=C \
+PATH=/bin \
+HOME=/home/test \
+USER=test \
+LOGNAME=test \
+QEMU_AUDIO_DRV=none \
+/usr/libexec/qemu-kvm \
+-name QEMUGuest1 \
+-S \
+-M pc \
+-cpu qemu32 \
+-m 214 \
+-smp 1,sockets=1,cores=1,threads=1 \
+-uuid c7a5fdbd-edaf-9455-926a-d65c16db1809 \
+-nographic \
+-nodefaults \
+-monitor unix:/tmp/lib/domain--1-QEMUGuest1/monitor.sock,server,nowait \
+-no-acpi \
+-boot c \
+-usb \
+-drive file=vxhs://192.168.0.1:9999/eb90327c-8302-4725-9e1b-4e85ed4dc251,\
+format=raw,if=none,id=drive-virtio-disk0,cache=none \
+-device virtio-blk-pci,bus=pci.0,addr=0x4,drive=drive-virtio-disk0,id=virtio-disk0
diff --git a/tests/qemuxml2argvdata/qemuxml2argv-disk-drive-network-vxhs.xml b/tests/qemuxml2argvdata/qemuxml2argv-disk-drive-network-vxhs.xml
new file mode 100644
index 0000000..45c807f
--- /dev/null
+++ b/tests/qemuxml2argvdata/qemuxml2argv-disk-drive-network-vxhs.xml
@@ -0,0 +1,34 @@
+<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/libexec/qemu-kvm</emulator>
+ <disk type='network' device='disk'>
+ <driver name='qemu' type='raw' cache='none'/>
+ <source protocol='vxhs' name='eb90327c-8302-4725-9e1b-4e85ed4dc251'>
+ <host name='192.168.0.1' port='9999'/>
+ </source>
+ <backingStore/>
+ <target dev='vda' bus='virtio'/>
+ <serial>eb90327c-8302-4725-9e1b-4e85ed4dc251</serial>
+ <alias name='virtio-disk0'/>
+ <address type='pci' domain='0x0000' bus='0x00' slot='0x04' function='0x0'/>
+ </disk>
+ <controller type='usb' 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 1ee8402..d94e3f2 100644
--- a/tests/qemuxml2argvtest.c
+++ b/tests/qemuxml2argvtest.c
@@ -869,6 +869,7 @@ mymain(void)
# endif
DO_TEST("disk-drive-network-rbd-ipv6", NONE);
DO_TEST_FAILURE("disk-drive-network-rbd-no-colon", NONE);
+ DO_TEST("disk-drive-network-vxhs", NONE);
DO_TEST("disk-drive-no-boot",
QEMU_CAPS_BOOTINDEX);
DO_TEST_PARSE_ERROR("disk-device-lun-type-invalid",
--
2.5.5
7 years, 11 months
[libvirt] [PATCH 00/11] Allow creation of vHBA by parent_wwnn/wwpn or fabric_name
by John Ferlan
https://bugzilla.redhat.com/show_bug.cgi?id=1349696
Lots of details in the bz, but essentially the problem is that providing
a "parent" scsi_hostX value has drawbacks on reboots because what was
scsi_hostX could turn into scsi_hostY on subsequent reboots.
So add the ability to use the parent wwnn/wwpn or fabric_wwn as 'search'
criteria in order to create either non persistent vHBA's via nodedev or
persistent vHBA's via storage pools.
NB: Documentation of this "process" is on the wiki:
http://wiki.libvirt.org/page/NPIV_in_libvirt
and would need to be adjusted once/if the changes are accepted.
John Ferlan (11):
nodedev: Fix crash in libvirtd on vHBA creation path
nodedev: Create helpers to search for vport capable nodedevs
nodedev: Add ability to find a vport capable vHBA
nodedev: Add the ability to create vHBA by parent wwnn/wwpn or
fabric_wwn
conf: Add more fchost search fields for storage pool vHBA creation
iscsi: Clean up createVport exit paths
iscsi: Change order of checks in createVport
iscsi: Converge more createVport checks
util: Remove need for extra VIR_FREE's in virGetFCHostNameByWWN
util: Introduce virGetFCHostNameByFabricWWN
iscsi: Add parent wwnn/wwpn or fabric capability for createVport
docs/schemas/basictypes.rng | 15 +++
docs/schemas/nodedev.rng | 15 +++
src/conf/node_device_conf.c | 234 +++++++++++++++++++++++++++++++----
src/conf/node_device_conf.h | 17 +++
src/conf/storage_conf.c | 21 +++-
src/conf/storage_conf.h | 3 +
src/libvirt_private.syms | 4 +
src/node_device/node_device_driver.c | 28 ++++-
src/storage/storage_backend_scsi.c | 86 +++++++------
src/util/virutil.c | 113 ++++++++++++-----
src/util/virutil.h | 4 +
11 files changed, 439 insertions(+), 101 deletions(-)
--
2.7.4
7 years, 11 months
[libvirt] [PATCH] tests: enable virpolkittest on any ELF platform
by Pino Toscano
This tests uses preload, which should work on any ELF-based platform
(and indeed it passes on Linux, GNU/kFreeBSD, and FreeBSD).
Also remove the WITH_DBUS conditional, as the test is already built
based on that conditional.
---
tests/virpolkittest.c | 6 +++---
1 file changed, 3 insertions(+), 3 deletions(-)
diff --git a/tests/virpolkittest.c b/tests/virpolkittest.c
index a51dd1c..4495c7c 100644
--- a/tests/virpolkittest.c
+++ b/tests/virpolkittest.c
@@ -22,7 +22,7 @@
#include "testutils.h"
-#if defined(WITH_DBUS) && defined(__linux__)
+#if defined(__ELF__)
# include <stdlib.h>
# include <dbus/dbus.h>
@@ -352,10 +352,10 @@ mymain(void)
VIRT_TEST_MAIN_PRELOAD(mymain, abs_builddir "/.libs/virdbusmock.so")
-#else /* ! (WITH_DBUS && __linux__) */
+#else /* ! __ELF__ */
int
main(void)
{
return EXIT_AM_SKIP;
}
-#endif /* ! WITH_DBUS */
+#endif /* ! __ELF__ */
--
2.7.4
8 years
[libvirt] [PATCH 0/2] configure gnutls cleanup
by Pavel Hrdina
Pavel Hrdina (2):
configure: move gnutls check into virt-gnutls.m4
m4/virt-gnutls: remove code for gnutls < 2.2.0
configure.ac | 109 +-----------------------------------------------------
m4/virt-gnutls.m4 | 62 +++++++++++++++++++++++++++++++
2 files changed, 64 insertions(+), 107 deletions(-)
create mode 100644 m4/virt-gnutls.m4
--
2.10.1
8 years
[libvirt] [PATCH] Allow virtio-console on PPC64
by Shivaprasad G Bhat
virQEMUCapsSupportsChardev existing checks returns true
for spapr-vty alone. Instead verify spapr-vty validity
and let the logic to return true for other device types
so that virtio-console passes.
The non-pseries machines dont have spapr-vio-bus. So, the
function always returned false for them before.
Fixes - https://bugzilla.redhat.com/show_bug.cgi?id=1257813
Signed-off-by: Shivaprasad G Bhat <sbhat(a)linux.vnet.ibm.com>
---
src/qemu/qemu_capabilities.c | 7 +++++--
1 file changed, 5 insertions(+), 2 deletions(-)
diff --git a/src/qemu/qemu_capabilities.c b/src/qemu/qemu_capabilities.c
index 6eee85d..784496b 100644
--- a/src/qemu/qemu_capabilities.c
+++ b/src/qemu/qemu_capabilities.c
@@ -4286,9 +4286,12 @@ virQEMUCapsSupportsChardev(const virDomainDef *def,
return false;
if ((def->os.arch == VIR_ARCH_PPC) || ARCH_IS_PPC64(def->os.arch)) {
+ if (!qemuDomainMachineIsPSeries(def))
+ return false;
/* only pseries need -device spapr-vty with -chardev */
- return (chr->deviceType == VIR_DOMAIN_CHR_DEVICE_TYPE_SERIAL &&
- chr->info.type == VIR_DOMAIN_DEVICE_ADDRESS_TYPE_SPAPRVIO);
+ if (chr->deviceType == VIR_DOMAIN_CHR_DEVICE_TYPE_SERIAL &&
+ chr->info.type != VIR_DOMAIN_DEVICE_ADDRESS_TYPE_SPAPRVIO)
+ return false;
}
if ((def->os.arch != VIR_ARCH_ARMV7L) && (def->os.arch != VIR_ARCH_AARCH64))
8 years
[libvirt] [PATCH v2 0/1] storage: vstorage support
by Olga Krishtal
The patch supports pool and volume managment using Vistuozzo Storage (vstorage)
as a backend.
To define pool use:
virsh -c qemu+unix:///system pool-define-as --name VZ --type vstorage
--source-name vz7-vzstorage --target /vzstorage_pool
The resulting XML:
<pool type='vstorage'>
<name>VZ</name>
<uuid>5f45665b-66fa-4b18-84d1-248774cff3a1</uuid>
<capacity unit='bytes'>107374182400</capacity>
<allocation unit='bytes'>1441144832</allocation>
<available unit='bytes'>105933037568</available>
<source>
<name>vz7-vzstorage</name>
</source>
<target>
<path>/vzstorage_pool</path>
<permissions>
<mode>0700</mode>
<owner>0</owner>
<group>0</group>
</permissions>
</target>
</pool>
For the vstorage pool the only obligatory parameter, which stores cluster name,
is --source-name.
v2:
- maximum code reusage
- fixed name issue - we use vstorage
- simplified findPoolSources
Olga Krishtal (1):
storage: vz storage pool support
configure.ac | 28 ++++++++++
docs/schemas/storagepool.rng | 13 +++++
include/libvirt/libvirt-storage.h | 1 +
src/conf/storage_conf.c | 16 +++++-
src/conf/storage_conf.h | 4 +-
src/storage/storage_backend.c | 3 +
src/storage/storage_backend_fs.c | 114 ++++++++++++++++++++++++++++++++++++--
src/storage/storage_backend_fs.h | 3 +
src/storage/storage_driver.c | 2 +
tools/virsh-pool.c | 2 +
tools/virsh.c | 3 +
11 files changed, 181 insertions(+), 8 deletions(-)
--
1.8.3.1
8 years
[libvirt] [PATCH v3] qemu: report block job errors from qemu to the user
by Nikolay Shirokovskiy
So that you can see nice report on migration:
"error: operation failed: migration of disk sda failed: No space left on device"
diff from v2:
1. split into 2 patches
2. change formal documentation where it is present accordingly
3. add variable initialization for safety
Nikolay Shirokovskiy (2):
qemu: prepare blockjob complete event error usage
qemu: report drive mirror errors on migration
src/qemu/qemu_blockjob.c | 14 ++++++++++--
src/qemu/qemu_blockjob.h | 3 ++-
src/qemu/qemu_domain.c | 1 +
src/qemu/qemu_domain.h | 1 +
src/qemu/qemu_driver.c | 4 ++--
src/qemu/qemu_migration.c | 54 +++++++++++++++++++++++++++++++-------------
src/qemu/qemu_monitor.c | 5 ++--
src/qemu/qemu_monitor.h | 4 +++-
src/qemu/qemu_monitor_json.c | 4 +++-
src/qemu/qemu_process.c | 4 ++++
10 files changed, 69 insertions(+), 25 deletions(-)
--
1.8.3.1
8 years
Re: [libvirt] [Qemu-ppc] [RFC PATCH qemu] spapr_pci: Create PCI-express root bus by default
by Andrea Bolognani
On Tue, 2016-11-01 at 13:46 +1100, David Gibson wrote:
> On Mon, Oct 31, 2016 at 03:10:23PM +1100, Alexey Kardashevskiy wrote:
> >
> > On 31/10/16 13:53, David Gibson wrote:
> > >
> > > On Fri, Oct 28, 2016 at 12:07:12PM +0200, Greg Kurz wrote:
> > > >
> > > > On Fri, 28 Oct 2016 18:56:40 +1100
> > > > Alexey Kardashevskiy <aik(a)ozlabs.ru> wrote:
> > > >
> > > > >
> > > > > At the moment sPAPR PHB creates a root buf of TYPE_PCI_BUS type.
> > > > > This means that vfio-pci devices attached to it (and this is
> > > > > a default behaviour) hide PCIe extended capabilities as
> > > > > the bus does not pass a pci_bus_is_express(pdev->bus) check.
> > > > >
> > > > > This changes adds a default PCI bus type property to sPAPR PHB
> > > > > and uses TYPE_PCIE_BUS if none passed; older machines get TYPE_PCI_BUS
> > > > > for backward compatibility as a bus type is used in the bus name
> > > > > so the root bus name becomes "pcie.0" instead of "pci.0".
> > > > >
> > > > > Signed-off-by: Alexey Kardashevskiy <aik(a)ozlabs.ru>
> > > > > ---
> > > > >
> > > > > What can possibly go wrong with such change of a name?
> > > > > From devices prospective, I cannot see any.
> > > > >
> > > > > libvirt might get upset as "pci.0" will not be available,
> > > > > will it make sense to create pcie.0 as a root bus and always
> > > > > add a PCIe->PCI bridge and name its bus "pci.0"?
> > > > >
> > > > > Or create root bus from TYPE_PCIE_BUS and force name to "pci.0"?
> > > > > pci_register_bus() can do this.
> > > > >
> > > > >
> > > > > ---
> > > > > hw/ppc/spapr.c | 5 +++++
> > > > > hw/ppc/spapr_pci.c | 5 ++++-
> > > > > include/hw/pci-host/spapr.h | 1 +
> > > > > 3 files changed, 10 insertions(+), 1 deletion(-)
> > > > >
> > > > > diff --git a/hw/ppc/spapr.c b/hw/ppc/spapr.c
> > > > > index 0b3820b..a268511 100644
> > > > > --- a/hw/ppc/spapr.c
> > > > > +++ b/hw/ppc/spapr.c
> > > > > @@ -2541,6 +2541,11 @@ DEFINE_SPAPR_MACHINE(2_8, "2.8", true);
> > > > > .driver = TYPE_SPAPR_PCI_HOST_BRIDGE, \
> > > > > .property = "mem64_win_size", \
> > > > > .value = "0", \
> > > > > + }, \
> > > > > + { \
> > > > > + .driver = TYPE_SPAPR_PCI_HOST_BRIDGE, \
> > > > > + .property = "root_bus_type", \
> > > > > + .value = TYPE_PCI_BUS, \
> > > > > },
> > > > >
> > > > > static void phb_placement_2_7(sPAPRMachineState *spapr, uint32_t index,
> > > > > diff --git a/hw/ppc/spapr_pci.c b/hw/ppc/spapr_pci.c
> > > > > index 7cde30e..2fa1f22 100644
> > > > > --- a/hw/ppc/spapr_pci.c
> > > > > +++ b/hw/ppc/spapr_pci.c
> > > > > @@ -1434,7 +1434,9 @@ static void spapr_phb_realize(DeviceState *dev, Error **errp)
> > > > > bus = pci_register_bus(dev, NULL,
> > > > > pci_spapr_set_irq, pci_spapr_map_irq, sphb,
> > > > > &sphb->memspace, &sphb->iospace,
> > > > > - PCI_DEVFN(0, 0), PCI_NUM_PINS, TYPE_PCI_BUS);
> > > > > + PCI_DEVFN(0, 0), PCI_NUM_PINS,
> > > > > + sphb->root_bus_type ? sphb->root_bus_type :
> > > > > + TYPE_PCIE_BUS);
> > > >
> > > > Shouldn't we ensure that sphb->root_bus_type is either TYPE_PCIE_BUS or
> > > > TYPE_PCI_BUS ?
> > >
> > > Yes, I think so. In fact, I think it would be better to make the
> > > property a boolean that just selects PCI-E, rather than this which
> > > exposes qemu (semi-)internal type names on the comamnd line.
> >
> > Sure, a "pcie-root" boolean property should do.
> >
> > However this is not my main concern, I rather wonder if we have to have
> > pci.0 when we pick PCIe for the root.
>
> Right.
>
> I've added Andrea Bologna to the CC list to get a libvirt perspective.
Thanks for doing so: changes such as this one can have quite
an impact on the upper layers of the stack, so the earliest
libvirt is involved in the discussion the better.
I'm going to go a step further and cross-post to libvir-list
in order to give other libvirt contributors a chance to chime
in too.
> Andrea,
>
> To summarise the issue here:
> * As I've said before the PAPR spec kinda-sorta abstracts the
> difference between vanilla PCI and PCI-E
> * However, because within qemu we're declaring the bus as PCI that
> means some PCI-E devices aren't working right
> * In particular it means that PCI-E extended config space isn't
> available
>
> The proposal is to change (on newer machine types) the spapr PHB code
> to declare a PCI-E bus instead. AIUI this still won't make the root
> complex guest visible (which it's not supposed to be under PAPR), and
> the guest shouldn't see a difference in most cases - it will still see
> the PAPR abstracted PCIish bus, but will now be able to get extended
> config space.
>
> The possible problem from a libvirt perspective is that doing this in
> the simplest way in qemu would change the name of the default bus from
> pci.0 to pcie.0. We have two suggested ways to mitigate this:
> 1) Automatically create a PCI-E to PCI bridge, so that new machine
> types will have both a pcie.0 and pci.0 bus
> 2) Force the name of the bus to be pci.0, even though it's treated
> as PCI-E in other ways.
>
> We're trying to work out exactly what will and won't cause trouble for
> libvirt.
Option 2) is definitely a no-no, as we don't want to be piling
up even more hacks and architecture-specific code: the PCI
Express Root Bus should be called pcie.0, just as it is on q35
and mach-virt machine types.
Option 1) doesn't look too bad, but devices that are added
automatically by QEMU are an issue since we need to hardcode
knowledge of them into libvirt if we want the rest of the PCI
address allocation logic to handle them correctly.
Moreover libvirt now has the ability of building a legacy PCI
topology without user intervention, if needed to plug in
legacy devices, on machines that have a PCI Express Root Bus,
which makes the additional bridge fully redundant...
... or at least it would, if we actually had a proper
PCIe-to-PCI bridge; AFAIK, though, the closest we have is the
i82801b11-bridge that is Intel-specific despite having so far
been abused as a generic PCIe-to-PCI bridge. I'm not even
sure whether it would work at all on ppc64.
Moving from legacy PCI to PCI Express would definitely be an
improvement, in my opinion. As mentioned, that's already the
case for at least two other architectures, so the more we can
standardize on that, the better.
That said, considering that a big part of the PCI address
allocation logic is based off whether the specific machine
type exposes a legay PCI Root Bus or a PCI Express Root Bus,
libvirt will need a way to be able to tell which one is which.
Version checks are pretty much out of the question, as they
fail as soon as downstream releases enter the picture. A
few ways we could deal with the situation:
1) switch to PCI Express on newer machine types, and
expose some sort of capability through QMP so that
libvirt can know about the switch
2) switch between legacy PCI and PCI Express based on a
machine type option. libvirt would be able to find out
whether the option is available or not, and default to
either
<controller type='pci' model='pci-root'/>
or
<controller type='pci' model='pcie-root'/>
based on that. In order to support multiple PHBs
properly, those would have to be switchable with an
option as well
3) create an entirely new machine type, eg. pseries-pcie
or whatever someone with the ability to come up with
decent names can suggest :) That would make ppc64
similar to x86, where i440fx and q35 have different
root buses. libvirt would learn about the new machine
type, know that it has a PCI Express Root Bus, and
behave accordingly
Option 1) would break horribly with existing libvirt
versions, and so would Option 2) if we default to using
PCI Express. Option 2) with default to legacy PCI and
option 3) would work just fine with existing libvirt
versions AFAICT, but wouldn't of course expose the new
capabilities.
Option 3) is probably the one that will be less confusing
to users; we might even decide to take the chance and fix
other small annoyances with the current pseries machine
type, if there's any. On the other hand, it might very well
be considered to be too big a hammer for such a small nail.
--
Andrea Bolognani / Red Hat / Virtualization
8 years
[libvirt] [PATCH v2 00/10] admin: Introduce runtime logging APIs
by Erik Skultety
v1 here https://www.redhat.com/archives/libvir-list/2016-November/msg00009.html
since v1:
- incorporated notes raised during review
- allowed passing of NULL via the public APIs
* behaves the same way as an empty string, but lead to even more code
reduction in 'daemonSetupLogging' for practically no extra code to enable
such feature
- added forgotten documentation
- updated NEWS file
Erik Skultety (10):
virlog: Introduce virLog{Get,Set}DefaultOutput
admin: Allow passing NULL to virLogSetFilters
daemon: Hook up the virLog{Get,Set}DefaultOutput to the daemon's init
routine
admin: Introduce virAdmConnectGetLoggingOutputs
admin: Introduce virAdmConnectGetLoggingFilters
admin: Introduce virAdmConnectSetLoggingOutputs
admin: Introduce virAdmConnectSetLoggingFilters
virt-admin: Wire-up the logging APIs
admin: Add an example demonstrating how to use the logging APIs
admin: Update the news file to include the new logging features
.gitignore | 1 +
daemon/admin.c | 104 ++++++++++++++++++++++++++
daemon/libvirtd.c | 96 ++++--------------------
docs/news.html.in | 4 +
examples/Makefile.am | 3 +-
examples/admin/logging.c | 102 ++++++++++++++++++++++++++
include/libvirt/libvirt-admin.h | 16 ++++
src/admin/admin_protocol.x | 50 ++++++++++++-
src/admin/admin_remote.c | 70 ++++++++++++++++++
src/admin_protocol-structs | 26 +++++++
src/libvirt-admin.c | 157 ++++++++++++++++++++++++++++++++++++++++
src/libvirt_admin_private.syms | 6 ++
src/libvirt_admin_public.syms | 8 ++
src/libvirt_private.syms | 2 +
src/locking/lock_daemon.c | 90 ++++-------------------
src/logging/log_daemon.c | 92 ++++-------------------
src/util/virlog.c | 100 ++++++++++++++++++++++++-
src/util/virlog.h | 4 +-
tools/virt-admin.c | 120 ++++++++++++++++++++++++++++++
tools/virt-admin.pod | 90 +++++++++++++++++++++++
20 files changed, 899 insertions(+), 242 deletions(-)
create mode 100644 examples/admin/logging.c
--
2.5.5
8 years
