[libvirt] [PATCH] tools: avoid text spilling into variables
by Dariusz Gadomski
From: Christian Ehrhardt <christian.ehrhardt(a)canonical.com>
While libvirt-guests.sh is running cases can let guest_is_on fail which
causes check_guests_shutdown to print output.
That output shall not spill into the users of function
check_guests_shutdown which is therefore now returning values in a
variable like guest_is_on already did.
Original-Author: Christian Ehrhardt <christian.ehrhardt(a)canonical.com>
Modified-By: Jorge Niedbalski <niedbalski(a)ubuntu.com>
---
tools/libvirt-guests.sh.in | 15 +++++++++------
1 file changed, 9 insertions(+), 6 deletions(-)
diff --git a/tools/libvirt-guests.sh.in b/tools/libvirt-guests.sh.in
index 8a158cca4..91a2f3283 100644
--- a/tools/libvirt-guests.sh.in
+++ b/tools/libvirt-guests.sh.in
@@ -329,12 +329,13 @@ guest_count()
# check_guests_shutdown URI GUESTS
# check if shutdown is complete on guests in "GUESTS" and returns only
# guests that are still shutting down
+# Result is returned in "guests_shutting_down"
check_guests_shutdown()
{
uri=$1
guests=$2
- guests_up=
+ guests_shutting_down=
for guest in $guests; do
if ! guest_is_on "$uri" "$guest" >/dev/null 2>&1; then
eval_gettext "Failed to determine state of guest: \$guest. Not tracking it anymore."
@@ -342,10 +343,9 @@ check_guests_shutdown()
continue
fi
if "$guest_running"; then
- guests_up="$guests_up $guest"
+ guests_shutting_down="$guests_shutting_down $guest"
fi
done
- echo "$guests_up"
}
# print_guests_shutdown URI BEFORE AFTER
@@ -392,8 +392,10 @@ shutdown_guests_parallel()
guest=$1
shift
guests=$*
- shutdown_guest_async "$uri" "$guest"
- on_shutdown="$on_shutdown $guest"
+ if [ -z "$(echo $on_shutdown | grep $guest)" -a -n "$(guest_name "$uri" "$guest")" ]; then
+ shutdown_guest_async "$uri" "$guest"
+ on_shutdown="$on_shutdown $guest"
+ fi
done
sleep 1
@@ -420,7 +422,8 @@ shutdown_guests_parallel()
fi
on_shutdown_prev=$on_shutdown
- on_shutdown=$(check_guests_shutdown "$uri" "$on_shutdown")
+ check_guests_shutdown "$uri" "$on_shutdown"
+ on_shutdown="$guests_shutting_down"
print_guests_shutdown "$uri" "$on_shutdown_prev" "$on_shutdown"
done
}
--
2.14.1
6 years, 2 months
[libvirt] Should we switch to a different JSON library?
by Martin Kletzander
Hi everyone,
so we are using yajl for parsing JSON. However there are some reasons
why we might consider switching to another one:
1) It is basically dead upstream
2) We're just using the lexer part of it
3) We only use it for parsing
4) The are workarounds for it in the code
So I looked at some options and found few other libraries, I only took
those that are widely available (read: I checked if some random
downstream distro has them), however most of them were not very much
usable. Except one. But here's the list of few others that didn't look
that bad either. All are MIT-licensed, try to be thread-safe and
support pkg-config:
- libfastjson [1] - from rsyslog community, optimized for working with
logs, used almost only by rsyslog, it's supposed to
have doxygen docs, they switched to libfastjson
from json-c due to some problems with it
(performance, ref counting bug, ...)
- json-c [2] - looked abandoned until I looked at the proper github
page, "documentation" in doxygen
- Jansson [3] - I really like this one. The API seems very intuitive,
it has nice documentation [4] in readthedocs (and I'm
not talking about the visual style, but how easy is to
find information), it can be used for formatting JSON
in a similar way we are doing it. It has json_auto_t
(optional) type that uses the attribute cleanup for
automatic scope dereference (just in case we want to
use it), it has iterators... did I tell you I like this
one a lot?
What do you (others) think of switching the JSON library? Do you know
about any other projects that could be used considering license,
platform support, etc.? Also feel free to fix any mistakes I might have
posted. I double-checked it, but you know, "trust, but verify".
Have a nice day,
Martin
[1] https://github.com/rsyslog/libfastjson
[2] https://github.com/json-c/json-c
[3] http://www.digip.org/jansson/
[4] https://jansson.readthedocs.io/
6 years, 3 months
[libvirt] [PATCH 00/14] Basic implementation of persistent reservations
by Michal Privoznik
QEMU added support for SCSI persistent reservations. The way QEMU
implemented that makes it slightly harder for libvirt to adapt to - it's
a small binary that needs to start before qemu so that it can connect to
it. Basically, what libvirt does is:
1) start qemu-pr-helper (the small binary from above),
2) records its PID for tracking purposes
3) start qemu
and when shutting down a domain the process is reversed:
1) shut down qemu process,
2) kill qemu-pr-helper (PID was saved earlier).
Now, here also lies the last missing piece to he puzzle - what if
qemu-pr-helper dies while qemu is running? After some discussion with
Paolo it was agreed that qemu will emit an event for libvirt so that we
can respawn the process. Anyway, that shouldn't be a show stopper for
these patches (if it was the patch set might get too big).
Please test, review and comment.
As usual, you can find the patches on my github too:
https://github.com/zippy2/libvirt/tree/pr
Michal Privoznik (14):
virstoragefile: Introduce virStoragePRDef
qemuDomainDiskChangeSupported: Deny changing reservations
qemu: Introduce pr-manager-helper capability
qemu_domain: Introduce qemuDomainDiskPRObject
qemu: Generate alias for pr-helper
qemu: Store prAlias and prPath in status XML
qemu: Generate cmd line at startup
qemu: Introduce pr_helper to qemu.conf
qemu: Start PR daemons on domain startup
qemu: Track PR daemons PIDs in status XML
qemu_domain: Introduce qemuDomainGetPRUsageCount
qemu_process.c: Introduce qemuProcessSetupPRDaemon
qemu_hotplug: Hotplug of reservations
qemu_hotplug: Hotunplug of reservations
docs/formatdomain.html.in | 25 +-
docs/schemas/domaincommon.rng | 19 +-
docs/schemas/storagecommon.rng | 34 ++
m4/virt-driver-qemu.m4 | 5 +
src/conf/domain_conf.c | 36 ++
src/libvirt_private.syms | 4 +
src/qemu/libvirtd_qemu.aug | 1 +
src/qemu/qemu.conf | 4 +
src/qemu/qemu_capabilities.c | 2 +
src/qemu/qemu_capabilities.h | 1 +
src/qemu/qemu_command.c | 59 +++
src/qemu/qemu_conf.c | 7 +-
src/qemu/qemu_conf.h | 1 +
src/qemu/qemu_domain.c | 435 ++++++++++++++++++++-
src/qemu/qemu_domain.h | 29 ++
src/qemu/qemu_hotplug.c | 110 ++++++
src/qemu/qemu_process.c | 160 ++++++++
src/qemu/qemu_process.h | 4 +
src/qemu/test_libvirtd_qemu.aug.in | 1 +
src/util/virstoragefile.c | 166 ++++++++
src/util/virstoragefile.h | 17 +
.../disk-virtio-scsi-reservations-not-managed.args | 28 ++
.../disk-virtio-scsi-reservations-not-managed.xml | 40 ++
.../disk-virtio-scsi-reservations.args | 29 ++
.../disk-virtio-scsi-reservations.xml | 38 ++
tests/qemuxml2argvtest.c | 8 +
.../disk-virtio-scsi-reservations-not-managed.xml | 1 +
.../disk-virtio-scsi-reservations.xml | 1 +
tests/qemuxml2xmltest.c | 4 +
29 files changed, 1250 insertions(+), 19 deletions(-)
create mode 100644 tests/qemuxml2argvdata/disk-virtio-scsi-reservations-not-managed.args
create mode 100644 tests/qemuxml2argvdata/disk-virtio-scsi-reservations-not-managed.xml
create mode 100644 tests/qemuxml2argvdata/disk-virtio-scsi-reservations.args
create mode 100644 tests/qemuxml2argvdata/disk-virtio-scsi-reservations.xml
create mode 120000 tests/qemuxml2xmloutdata/disk-virtio-scsi-reservations-not-managed.xml
create mode 120000 tests/qemuxml2xmloutdata/disk-virtio-scsi-reservations.xml
--
2.13.6
6 years, 3 months
[libvirt] [PATCH] fix regex to check CN from server certificate
by Tiago M. Vieira
Currently when the script validates the PKI files and
the certificate 'Subject:' field contains RDNs after
the Common Name (CN), these values are also included,
creating a false result that the CN is not correct.
A small change to the sed regex fixes this issue, by
extracting only the value for CN and nothing else. The
regex is replaced with the exact same regex used to
extract the CN value from the client certificate.
---
tools/virt-pki-validate.in | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/tools/virt-pki-validate.in b/tools/virt-pki-validate.in
index 206637abf..b04680dde 100755
--- a/tools/virt-pki-validate.in
+++ b/tools/virt-pki-validate.in
@@ -255,7 +255,7 @@ then
echo CA organization: $ORG
echo Server organization: $S_ORG
fi
- S_HOST=`"$CERTOOL" -i --infile "$LIBVIRT/servercert.pem" | grep Subject: | sed 's+.*CN=\([a-zA-Z\. _-]*\)+\1+'`
+ S_HOST=`"$CERTOOL" -i --infile "$LIBVIRT/servercert.pem" | grep Subject: | sed 's+.*CN=\(.[a-zA-Z \._-]*\).*+\1+'`
if test "$S_HOST" != "`hostname -s`" && test "$S_HOST" != "`hostname`"
then
echo The server certificate does not seem to match the host name
--
2.14.3
6 years, 3 months
[libvirt] [PATCH] qemu: report a nicer error when USB is disabled
by Ján Tomko
If the user tries to define a domain that has
<controller type='usb' model='none'/>
and also some USB devices, we report an error:
error: internal error: No free USB ports
Which is technically still correct for a domain with no USB ports.
Change it to:
USB is disabled for this domain, but USB devices are present in the domain XML
https://bugzilla.redhat.com/show_bug.cgi?id=1347550
---
src/conf/domain_conf.c | 2 +-
src/conf/domain_conf.h | 2 ++
src/libvirt_private.syms | 1 +
src/qemu/qemu_domain_address.c | 7 +++++++
4 files changed, 11 insertions(+), 1 deletion(-)
diff --git a/src/conf/domain_conf.c b/src/conf/domain_conf.c
index f3b4dd33d..028fcb5be 100644
--- a/src/conf/domain_conf.c
+++ b/src/conf/domain_conf.c
@@ -5116,7 +5116,7 @@ virDomainDiskDefValidate(const virDomainDiskDef *disk)
return 0;
}
-static bool
+bool
virDomainDefHasUSB(const virDomainDef *def)
{
size_t i;
diff --git a/src/conf/domain_conf.h b/src/conf/domain_conf.h
index bb3b6f0c3..32e191e0a 100644
--- a/src/conf/domain_conf.h
+++ b/src/conf/domain_conf.h
@@ -2656,6 +2656,8 @@ int virDomainDefPostParse(virDomainDefPtr def,
unsigned int parseFlags,
virDomainXMLOptionPtr xmlopt,
void *parseOpaque);
+bool
+virDomainDefHasUSB(const virDomainDef *def);
int virDomainDefValidate(virDomainDefPtr def,
virCapsPtr caps,
diff --git a/src/libvirt_private.syms b/src/libvirt_private.syms
index 5b1bc5e4f..21f226258 100644
--- a/src/libvirt_private.syms
+++ b/src/libvirt_private.syms
@@ -267,6 +267,7 @@ virDomainDefGetVcpusTopology;
virDomainDefHasDeviceAddress;
virDomainDefHasMemballoon;
virDomainDefHasMemoryHotplug;
+virDomainDefHasUSB;
virDomainDefHasVcpusOffline;
virDomainDefMaybeAddController;
virDomainDefMaybeAddInput;
diff --git a/src/qemu/qemu_domain_address.c b/src/qemu/qemu_domain_address.c
index 69c0c8bf2..0d565b3ea 100644
--- a/src/qemu/qemu_domain_address.c
+++ b/src/qemu/qemu_domain_address.c
@@ -2644,6 +2644,13 @@ qemuDomainUSBAddressAddHubs(virDomainDefPtr def)
&data,
false));
+ if (data.count && !virDomainDefHasUSB(def)) {
+ virReportError(VIR_ERR_CONFIG_UNSUPPORTED, "%s",
+ _("USB is disabled for this domain, but USB devices "
+ "are present in the domain XML"));
+ return -1;
+ }
+
if (data.count > available_ports)
hubs_needed = VIR_DIV_UP(data.count - available_ports + 1,
VIR_DOMAIN_USB_HUB_PORTS - 1);
--
2.13.0
6 years, 3 months
[libvirt] [PATCH] Migration: Preserve the failed job in case migration job is terminated beyond the perform phase.
by Prerna Saxena
In case of non-p2p migration, in case libvirt client gets disconnected from source libvirt
after PERFORM phase is over, the daemon just resets the current migration job.
However, the VM could be left paused on both source and destination in such case. In case
the client reconnects and queries migration status, the job has been blanked out from source libvirt,
and this reconnected client has no clear way of figuring out if an unclean migration had previously
been aborted.
This patch calls out a "potentially" incomplete migration as a failed job, so that a client may
be able to watch previously failed jobs for this VM and take corrective actions as needed.
Signed-off-by: Prerna Saxena <saxenap.ltc(a)gmail.com>
---
src/qemu/qemu_domain.c | 16 ++++++++++++++++
src/qemu/qemu_domain.h | 2 ++
src/qemu/qemu_migration.c | 4 ++--
3 files changed, 20 insertions(+), 2 deletions(-)
diff --git a/src/qemu/qemu_domain.c b/src/qemu/qemu_domain.c
index e8e0313..7c60d17 100644
--- a/src/qemu/qemu_domain.c
+++ b/src/qemu/qemu_domain.c
@@ -4564,6 +4564,22 @@ qemuDomainObjDiscardAsyncJob(virQEMUDriverPtr driver, virDomainObjPtr obj)
qemuDomainObjSaveJob(driver, obj);
}
+
+void
+qemuDomainObjFailAsyncJob(virQEMUDriverPtr driver, virDomainObjPtr obj)
+{
+ qemuDomainObjPrivatePtr priv = obj->privateData;
+ VIR_FREE(priv->job.completed);
+ if (VIR_ALLOC(priv->job.completed) == 0) {
+ priv->job.current->type = VIR_DOMAIN_JOB_FAILED;
+ priv->job.completed = priv->job.current;
+ } else {
+ VIR_WARN("Unable to allocate job.completed for VM %s", obj->def->name);
+ }
+ qemuDomainObjResetAsyncJob(priv);
+ qemuDomainObjEndJob(driver, obj);
+}
+
void
qemuDomainObjReleaseAsyncJob(virDomainObjPtr obj)
{
diff --git a/src/qemu/qemu_domain.h b/src/qemu/qemu_domain.h
index c33af36..6465603 100644
--- a/src/qemu/qemu_domain.h
+++ b/src/qemu/qemu_domain.h
@@ -497,6 +497,8 @@ void qemuDomainObjRestoreJob(virDomainObjPtr obj,
struct qemuDomainJobObj *job);
void qemuDomainObjDiscardAsyncJob(virQEMUDriverPtr driver,
virDomainObjPtr obj);
+void qemuDomainObjFailAsyncJob(virQEMUDriverPtr driver,
+ virDomainObjPtr obj);
void qemuDomainObjReleaseAsyncJob(virDomainObjPtr obj);
qemuMonitorPtr qemuDomainGetMonitor(virDomainObjPtr vm)
diff --git a/src/qemu/qemu_migration.c b/src/qemu/qemu_migration.c
index 69eb231..fd8950e 100644
--- a/src/qemu/qemu_migration.c
+++ b/src/qemu/qemu_migration.c
@@ -1911,8 +1911,8 @@ qemuMigrationCleanup(virDomainObjPtr vm,
VIR_WARN("Migration of domain %s finished but we don't know if the"
" domain was successfully started on destination or not",
vm->def->name);
- /* clear the job and let higher levels decide what to do */
- qemuDomainObjDiscardAsyncJob(driver, vm);
+ /* clearly "fail" the job and let higher levels decide what to do */
+ qemuDomainObjFailAsyncJob(driver, vm);
break;
case QEMU_MIGRATION_PHASE_PERFORM3:
--
1.7.1
6 years, 3 months
[libvirt] [PATCH 0/7] Keep non-persistent changes alive in snapshot
by Kothapally Madhu Pavan
Restoring to a snapshot should not overwrite the persistent XML configuration
of a snapshot as a side effect. This patchset fixes the same. Currently,
virDomainSnapshotDef only saves active domain definition of the guest.
And on restore the active domain definition is used as both active and
inactive domain definitions. This will make the non-persistent changes
persistent in snapshot image. This patchset allows to save inactive domain
definition as well and on snapshot-revert non-persistent configuration is
restored as is.
Currently, snapshot-revert is making non-presistent changes as persistent.
Here are the steps to reproduce.
Step1: virsh define $dom
Step2: virsh attach-device $dom $memory-device.xml --live
Step3: virsh snapshot-create $dom
Step4: virsh destroy $dom
Step5: virsh snapshot-revert $dom $snapshot-name
Step6: virsh destroy $dom
Step7: virsh start $dom
Here we still have $memory-device attached in Step2.
This patchset is attempting to solve this issue. This patchset will also
allow user to dump and edit inactive XML configuration of a snapshot.
Dumping inactive domain definition of a snapshot is important as
--redefine uses snapshot-dumpxml output to redefine a snapshot.
Kothapally Madhu Pavan (7):
qemu: Store inactive domain configuration in snapshot
qemu: Use active and inactive snapshot configuration on restore
conf: Allow editing inactive snapshot configuration
virsh: Dump inactive XML configuration of snapshot using
snapshot-dumpxml
virsh: Edit inactive XML configuration of snapshot using snapshot-edit
virsh: Allow restoring snapshot with non-persistent configuration
tests: docs: Add schema and testcase for domainsnapshot
docs/schemas/domainsnapshot.rng | 19 +++++
include/libvirt/libvirt-domain-snapshot.h | 10 ++-
include/libvirt/libvirt-domain.h | 1 +
src/conf/domain_conf.c | 6 +-
src/conf/domain_conf.h | 2 +
src/conf/snapshot_conf.c | 48 ++++++++++++-
src/conf/snapshot_conf.h | 1 +
src/qemu/qemu_driver.c | 33 ++++++++-
.../full_domain_withinactive.xml | 83 ++++++++++++++++++++++
tests/domainsnapshotxml2xmltest.c | 1 +
tools/virsh-snapshot.c | 20 ++++++
tools/virsh.pod | 37 +++++++++-
12 files changed, 251 insertions(+), 10 deletions(-)
create mode 100644 tests/domainsnapshotxml2xmlout/full_domain_withinactive.xml
--
1.8.3.1
6 years, 3 months
[libvirt] [PATCH python 1/1] Fix type extracting from PyDict
by Edgar Kaziakhmedov
PyInt_Check returns value whether or not an input object is the integer
type. The existing implementation of extracting leads to the wrong
type interpretation in the following code:
params = {libvirt.VIR_MIGRATE_PARAM_DISKS_PORT : 50123}
...
dom.migrate3(%option1, params, %option3)
where libvirt reports:
libvirt.libvirtError: invalid argument: invalid type 'ullong' for
parameter 'disks_port', expected 'int'
So, this patch fixes that bug and allows casting to the VIR_TYPED_PARAM_INT
type.
Signed-off-by: Edgar Kaziakhmedov <edgar.kaziakhmedov(a)virtuozzo.com>
---
libvirt-utils.c | 5 +----
1 file changed, 1 insertion(+), 4 deletions(-)
diff --git a/libvirt-utils.c b/libvirt-utils.c
index f7b4478..3a00e9f 100644
--- a/libvirt-utils.c
+++ b/libvirt-utils.c
@@ -434,10 +434,7 @@ virPyDictToTypedParamOne(virTypedParameterPtr *params,
type = VIR_TYPED_PARAM_ULLONG;
#if PY_MAJOR_VERSION < 3
} else if (PyInt_Check(value)) {
- if (PyInt_AS_LONG(value) < 0)
- type = VIR_TYPED_PARAM_LLONG;
- else
- type = VIR_TYPED_PARAM_ULLONG;
+ type = VIR_TYPED_PARAM_INT;
#endif
} else if (PyFloat_Check(value)) {
type = VIR_TYPED_PARAM_DOUBLE;
--
2.11.0
6 years, 3 months
[libvirt] [PATCH] apparmor: allow libvirt to send term signal to unconfined
by Guido Günther
Otherwise stopping domains with qemu://session fails like
[164012.338157] audit: type=1400 audit(1516202208.784:99): apparmor="DENIED" operation="signal" profile="/usr/sbin/libvirtd" pid=18835 comm="libvirtd" requested_mask="send" denied_mask="send" signal=term peer="unconfined"
---
examples/apparmor/usr.sbin.libvirtd | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/examples/apparmor/usr.sbin.libvirtd b/examples/apparmor/usr.sbin.libvirtd
index 0ddec3f6e2..be4fabf905 100644
--- a/examples/apparmor/usr.sbin.libvirtd
+++ b/examples/apparmor/usr.sbin.libvirtd
@@ -63,7 +63,7 @@
signal (send) peer=/usr/sbin/dnsmasq,
signal (read, send) peer=libvirt-*,
- signal (send) set=("kill") peer=unconfined,
+ signal (send) set=("kill", "term") peer=unconfined,
# Very lenient profile for libvirtd since we want to first focus on confining
# the guests. Guests will have a very restricted profile.
--
2.15.1
6 years, 3 months
