[libvirt] [PATCH] storage: allow metadata preallocation when creating qcow2 images
by Ján Tomko
Currently the 'allocation' element is not used when creating new images
with qemu-img. This patch interprets a non-zero value as a request to
preallocate metadata when a qcow2 image is created.
Bug: https://bugzilla.redhat.com/show_bug.cgi?id=684793
---
src/storage/storage_backend.c | 19 +++++++++++++------
1 files changed, 13 insertions(+), 6 deletions(-)
diff --git a/src/storage/storage_backend.c b/src/storage/storage_backend.c
index 41a19a1..bf6f7cc 100644
--- a/src/storage/storage_backend.c
+++ b/src/storage/storage_backend.c
@@ -669,10 +669,15 @@ virStorageBackendCreateQemuImg(virConnectPtr conn,
int imgformat = -1;
virCommandPtr cmd = NULL;
bool do_encryption = (vol->target.encryption != NULL);
+ bool preallocate = false;
unsigned long long int size_arg;
virCheckFlags(0, -1);
+ /* qcow2: preallocate metadata if requested allocation is non-zero */
+ if (vol->allocation > 0 && vol->target.format == VIR_STORAGE_FILE_QCOW2)
+ preallocate = true;
+
const char *type = virStorageFileFormatTypeToString(vol->target.format);
const char *backingType = vol->backingStore.path ?
virStorageFileFormatTypeToString(vol->backingStore.format) : NULL;
@@ -842,12 +847,14 @@ virStorageBackendCreateQemuImg(virConnectPtr conn,
vol->target.path, NULL);
virCommandAddArgFormat(cmd, "%lluK", size_arg);
- if (do_encryption) {
- if (imgformat == QEMU_IMG_BACKING_FORMAT_OPTIONS) {
- virCommandAddArgList(cmd, "-o", "encryption=on", NULL);
- } else {
- virCommandAddArg(cmd, "-e");
- }
+ if (imgformat == QEMU_IMG_BACKING_FORMAT_OPTIONS &&
+ (do_encryption || preallocate)) {
+ virCommandAddArg(cmd, "-o");
+ virCommandAddArgFormat(cmd, "%s%s%s", do_encryption ? "encryption=on" : "",
+ (do_encryption && preallocate) ? "," : "",
+ preallocate ? "preallocation=metadata" : "");
+ } else if (do_encryption){
+ virCommandAddArg(cmd, "-e");
}
}
--
1.7.8.6
12 years
[libvirt] Expose virDomainGetAutostart through virsh?
by Ruben Kerkhof
Hi list,
I'd like to check if a domain has autostart enabled. I do this now by
looking if there's a symlink in /etc/libvirt/qemu/autostart, but it
feels a bit hackish.
Is this something that could be added to virsh?
Something like virsh get-autostart domain would be great.
Kind regards,
Ruben
12 years
[libvirt] Proposed: always allow packets internal to an interface
by Gene Czarcinski
Currently, when an interface (virtual network) is started, if no ip
address is defined, then no rule is added to bemit "internal" network
traffic. However, virtual guests can use such a network to communicate
if a rule is added to the iptables/ip6tables rule set. This will work
even if no ip address is defined on an interface (which is valid).
I propose that rules of the following forms be added when an interface
is started and removed when it is destroyed:
iptables -I FORWARD 1 -i virbr18 -o virbr18 -j ACCEPT
ip6tables -I FORWARD 1 -i virbr18 -o virbr18 -j ACCEPT
If a user wants a "very private network", the user has to run the above
commands. The proposal simply does this automatically.
Gene
12 years
[libvirt] dnsmasq supporting RA instead of radvd patch
by Gene Czarcinski
I have a working patch to have dnsmasq support RA instead of radvd.
However, something has come up and it will be a week to ten days before
I can get it in shape to submit.
The current patch has three variables added to the _virNetworkObj
structure: dnsmasqRA flag and both major and minor values for the
dnsmasq's version.
I use "dnsmasq --version" and then parse out the major/minor version
values. If major>2, then dnamsqFA=1. If major=2 and minor>=63, then
dnsmasqRA=1. For all other cases, dnsmasqRA=0.
Code is added to the radvd functions which checks dnsmasqRA and exits if
it is 1.
Code is added to the dnsmasq configuration file if dnsmasqRa=1. If
dhcp-range or dhcp-hosts is specified for IPv6, then enable-ra is added
for stateful (dhcpv6). Otherwise, a special
"dhcp-range=<ipv6-subnet-address>,ra-only" so that the ManagedFlag will
be off in the RA packets for stateless operation.
OK, how does that sound? Everyone comfortable with that?
Another thing is that I plan to add a test such that if the radvd
executable is not valid, the dnsmasqRA=1.
As I was doing this, I also looked through the libvirt.spec file. My,
what a wonderful example of wizardly that is. Anyway, I thought some
updates may be in ortder:
- increase the minimum version for dnsmasq from 2.41 to 2.48.
- why is radvd required for rpmbuild?
- in light of my patch, make radvd an optional runtime requirement. I am
not a spec file expert by any means but there must be a way to not
require radvd if dnsmasq >- 2.63.
Comments?
Gene
12 years
[libvirt] [PATCH] qemu: Fix domain ID numbering race condition
by Peter Krempa
When the libvirt daemon is restarted it tries to reconnect to running
qemu domains. Since commit d38897a5d4b1880e1998394b2a37bba979bbdff1 the
re-connection code runs in separate threads. In the original
implementation the maximum of domain ID's (that is used as an
initializer for numbering guests created next) while libvirt was
reconnecting to the guest.
With the threaded implementation this opens a possibility for race
conditions with the thread that is autostarting guests. When there's a
guest running with id 1 and the daemon is restarted. The autostart code
is reached first and spawns the first guest that should be autostarted
as id 1. This results into the following unwanted situation:
# virsh list
Id Name State
----------------------------------------------------
1 guest1 running
1 guest2 running
This patch extracts the detection code before the re-connection threads
are started so that the maximum id of the guests being reconnected to is
known.
The only semantic change created by this is if the guest with greatest ID
quits before we are able to reconnect it's ID is used anyway as the
greatest one as without this patch the greatest ID of a process we could
successfuly reconnect to would be used.
---
src/qemu/qemu_driver.c | 21 +++++++++++++++++++++
src/qemu/qemu_process.c | 3 ---
2 files changed, 21 insertions(+), 3 deletions(-)
diff --git a/src/qemu/qemu_driver.c b/src/qemu/qemu_driver.c
index 3309f34..8ca8913 100644
--- a/src/qemu/qemu_driver.c
+++ b/src/qemu/qemu_driver.c
@@ -590,6 +590,20 @@ qemuDomainNetsRestart(void *payload,
virDomainObjUnlock(vm);
}
+
+static void
+qemuDomainFindMaxID(void *payload,
+ const void *name ATTRIBUTE_UNUSED,
+ void *data)
+{
+ virDomainObjPtr vm = payload;
+ int *driver_maxid = data;
+
+ if (vm->def->id >= *driver_maxid)
+ *driver_maxid = vm->def->id + 1;
+}
+
+
/**
* qemudStartup:
*
@@ -863,6 +877,13 @@ qemudStartup(int privileged) {
NULL, NULL) < 0)
goto error;
+ /* find the maximum ID from active and transient configs to initialize
+ * the driver with. This is to avoid race between autostart and reconnect
+ * threads */
+ virHashForEach(qemu_driver->domains.objs,
+ qemuDomainFindMaxID,
+ &(qemu_driver->nextvmid));
+
virHashForEach(qemu_driver->domains.objs, qemuDomainNetsRestart, NULL);
conn = virConnectOpen(qemu_driver->uri);
diff --git a/src/qemu/qemu_process.c b/src/qemu/qemu_process.c
index d8cf4c3..8bf80e7 100644
--- a/src/qemu/qemu_process.c
+++ b/src/qemu/qemu_process.c
@@ -3230,9 +3230,6 @@ qemuProcessReconnect(void *opaque)
goto error;
}
- if (obj->def->id >= driver->nextvmid)
- driver->nextvmid = obj->def->id + 1;
-
endjob:
if (!qemuDomainObjEndJob(driver, obj))
obj = NULL;
--
1.8.0
12 years
[libvirt] [PATCHv3 00/19] qemu block-commit support
by Eric Blake
This v3 posting resolves all the comments I had from Doug, Laine,
and myself, and has passed my testing with SELinux enabled.
v2 was here:
https://www.redhat.com/archives/libvir-list/2012-October/msg00633.html
See below for interdiff, and individual patches for more notes
about changes
Also available at:
http://repo.or.cz/w/libvirt/ericb.git/shortlog/refs/heads/blockjob
git fetch git://repo.or.cz/libvirt/ericb.git blockjob
Eric Blake (19):
storage: list more file types
storage: treat 'aio' like 'raw' at parse time
storage: match RNG to supported driver types
storage: use enum for default driver type
storage: use enum for disk driver type
storage: use enum for snapshot driver type
storage: don't probe non-files
storage: get entire metadata chain in one call
storage: don't require caller to pre-allocate metadata struct
storage: remember relative names in backing chain
storage: make it easier to find file within chain
storage: cache backing chain while qemu domain is live
storage: use cache to walk backing chain
blockjob: remove unused parameters after previous patch
blockjob: manage qemu block-commit monitor command
blockjob: wire up online qemu block-commit
blockjob: implement shallow commit flag in qemu
blockjob: refactor qemu disk chain permission grants
blockjob: properly label disks for qemu block-commit
docs/schemas/domaincommon.rng | 27 +-
docs/schemas/domainsnapshot.rng | 2 +-
src/conf/capabilities.h | 4 +-
src/conf/domain_conf.c | 165 +++------
src/conf/domain_conf.h | 8 +-
src/conf/snapshot_conf.c | 23 +-
src/conf/snapshot_conf.h | 2 +-
src/conf/storage_conf.c | 15 +-
src/libvirt.c | 2 -
src/libvirt_private.syms | 1 +
src/libxl/libxl_conf.c | 42 ++-
src/libxl/libxl_driver.c | 6 +-
src/qemu/qemu_capabilities.c | 3 +
src/qemu/qemu_capabilities.h | 1 +
src/qemu/qemu_cgroup.c | 14 +-
src/qemu/qemu_cgroup.h | 6 +-
src/qemu/qemu_command.c | 18 +-
src/qemu/qemu_domain.c | 33 +-
src/qemu/qemu_domain.h | 3 +
src/qemu/qemu_driver.c | 371 ++++++++++++++-------
src/qemu/qemu_hotplug.c | 13 +-
src/qemu/qemu_monitor.c | 30 ++
src/qemu/qemu_monitor.h | 7 +
src/qemu/qemu_monitor_json.c | 34 ++
src/qemu/qemu_monitor_json.h | 7 +
src/qemu/qemu_process.c | 11 +
src/security/security_dac.c | 7 -
src/security/security_selinux.c | 11 -
src/security/virt-aa-helper.c | 20 +-
src/storage/storage_backend_fs.c | 15 +-
src/util/storage_file.c | 282 ++++++++++++----
src/util/storage_file.h | 43 ++-
src/vbox/vbox_tmpl.c | 6 +-
src/xenxs/xen_sxpr.c | 26 +-
src/xenxs/xen_xm.c | 28 +-
tests/sexpr2xmldata/sexpr2xml-curmem.xml | 2 +-
.../sexpr2xml-disk-block-shareable.xml | 2 +-
.../sexpr2xml-disk-drv-blktap-raw.xml | 2 +-
.../sexpr2xml-disk-drv-blktap2-raw.xml | 2 +-
39 files changed, 859 insertions(+), 435 deletions(-)
diff --git a/src/conf/domain_conf.c b/src/conf/domain_conf.c
index 81cb3aa..afa4cfe 100644
--- a/src/conf/domain_conf.c
+++ b/src/conf/domain_conf.c
@@ -971,7 +971,7 @@ void virDomainDiskDefFree(virDomainDiskDefPtr def)
VIR_FREE(def->src);
VIR_FREE(def->dst);
VIR_FREE(def->driverName);
- virStorageFileFreeMetadata(def->chain);
+ virStorageFileFreeMetadata(def->backingChain);
VIR_FREE(def->mirror);
VIR_FREE(def->auth.username);
VIR_FREE(def->wwn);
@@ -3723,8 +3723,12 @@ virDomainDiskDefParseXML(virCapsPtr caps,
xmlStrEqual(cur->name, BAD_CAST "driver")) {
driverName = virXMLPropString(cur, "name");
driverType = virXMLPropString(cur, "type");
- if (STREQ_NULLABLE(driverType, "aio"))
- memcpy(driverType, "raw", strlen("raw"));
+ if (STREQ_NULLABLE(driverType, "aio")) {
+ /* In-place conversion to "raw", for Xen back-compat */
+ driverType[0] = 'r';
+ driverType[1] = 'a';
+ driverType[2] = 'w';
+ }
cachetag = virXMLPropString(cur, "cache");
error_policy = virXMLPropString(cur, "error_policy");
rerror_policy = virXMLPropString(cur, "rerror_policy");
@@ -4185,7 +4189,8 @@ virDomainDiskDefParseXML(virCapsPtr caps,
driverType);
goto error;
}
- } else {
+ } else if (def->type == VIR_DOMAIN_DISK_TYPE_FILE ||
+ def->type == VIR_DOMAIN_DISK_TYPE_BLOCK) {
def->format = caps->defaultDiskDriverType;
}
@@ -14763,10 +14768,10 @@ done:
/* Call iter(disk, name, depth, opaque) for each element of disk and
- its backing chain in the pre-populated disk->chain.
- ignoreOpenFailure determines whether to warn about a chain that
- mentions a backing file without also having metadata on that
- file. */
+ * its backing chain in the pre-populated disk->backingChain.
+ * ignoreOpenFailure determines whether to warn about a chain that
+ * mentions a backing file without also having metadata on that
+ * file. */
int virDomainDiskDefForeachPath(virDomainDiskDefPtr disk,
bool ignoreOpenFailure,
virDomainDiskDefPathIterator iter,
@@ -14782,7 +14787,7 @@ int virDomainDiskDefForeachPath(virDomainDiskDefPtr disk,
if (iter(disk, disk->src, 0, opaque) < 0)
goto cleanup;
- tmp = disk->chain;
+ tmp = disk->backingChain;
while (tmp && tmp->backingStoreIsFile) {
if (!ignoreOpenFailure && !tmp->backingMeta) {
virReportError(VIR_ERR_INTERNAL_ERROR,
diff --git a/src/conf/domain_conf.h b/src/conf/domain_conf.h
index 9c3abec..10ef841 100644
--- a/src/conf/domain_conf.h
+++ b/src/conf/domain_conf.h
@@ -569,7 +569,7 @@ struct _virDomainDiskDef {
} auth;
char *driverName;
int format; /* enum virStorageFileFormat */
- virStorageFileMetadataPtr chain;
+ virStorageFileMetadataPtr backingChain;
char *mirror;
int mirrorFormat; /* enum virStorageFileFormat */
diff --git a/src/qemu/qemu_cgroup.c b/src/qemu/qemu_cgroup.c
index 428befd..db371a0 100644
--- a/src/qemu/qemu_cgroup.c
+++ b/src/qemu/qemu_cgroup.c
@@ -87,8 +87,7 @@ qemuSetupDiskPathAllow(virDomainDiskDefPtr disk,
}
-int qemuSetupDiskCgroup(struct qemud_driver *driver ATTRIBUTE_UNUSED,
- virDomainObjPtr vm,
+int qemuSetupDiskCgroup(virDomainObjPtr vm,
virCgroupPtr cgroup,
virDomainDiskDefPtr disk)
{
@@ -127,8 +126,7 @@ qemuTeardownDiskPathDeny(virDomainDiskDefPtr disk ATTRIBUTE_UNUSED,
}
-int qemuTeardownDiskCgroup(struct qemud_driver *driver ATTRIBUTE_UNUSED,
- virDomainObjPtr vm,
+int qemuTeardownDiskCgroup(virDomainObjPtr vm,
virCgroupPtr cgroup,
virDomainDiskDefPtr disk)
{
@@ -230,7 +228,7 @@ int qemuSetupCgroup(struct qemud_driver *driver,
for (i = 0; i < vm->def->ndisks ; i++) {
if (qemuDomainDetermineDiskChain(driver, vm->def->disks[i],
false) < 0 ||
- qemuSetupDiskCgroup(driver, vm, cgroup, vm->def->disks[i]) < 0)
+ qemuSetupDiskCgroup(vm, cgroup, vm->def->disks[i]) < 0)
goto cleanup;
}
diff --git a/src/qemu/qemu_cgroup.h b/src/qemu/qemu_cgroup.h
index 362080a..c552162 100644
--- a/src/qemu/qemu_cgroup.h
+++ b/src/qemu/qemu_cgroup.h
@@ -36,12 +36,10 @@ typedef struct _qemuCgroupData qemuCgroupData;
bool qemuCgroupControllerActive(struct qemud_driver *driver,
int controller);
-int qemuSetupDiskCgroup(struct qemud_driver *driver,
- virDomainObjPtr vm,
+int qemuSetupDiskCgroup(virDomainObjPtr vm,
virCgroupPtr cgroup,
virDomainDiskDefPtr disk);
-int qemuTeardownDiskCgroup(struct qemud_driver *driver,
- virDomainObjPtr vm,
+int qemuTeardownDiskCgroup(virDomainObjPtr vm,
virCgroupPtr cgroup,
virDomainDiskDefPtr disk);
int qemuSetupHostUsbDeviceCgroup(usbDevice *dev,
diff --git a/src/qemu/qemu_command.c b/src/qemu/qemu_command.c
index f071769..4196caf 100644
--- a/src/qemu/qemu_command.c
+++ b/src/qemu/qemu_command.c
@@ -2129,7 +2129,7 @@ qemuBuildDriveStr(virConnectPtr conn ATTRIBUTE_UNUSED,
disk->tray_status == VIR_DOMAIN_DISK_TRAY_OPEN)) {
if (disk->type == VIR_DOMAIN_DISK_TYPE_DIR) {
/* QEMU only supports magic FAT format for now */
- if (disk->format && disk->format != VIR_STORAGE_FILE_FAT) {
+ if (disk->format > 0 && disk->format != VIR_STORAGE_FILE_FAT) {
virReportError(VIR_ERR_INTERNAL_ERROR,
_("unsupported disk driver type for '%s'"),
virStorageFileFormatTypeToString(disk->format));
@@ -5210,7 +5210,7 @@ qemuBuildCommandLine(virConnectPtr conn,
if (disk->type == VIR_DOMAIN_DISK_TYPE_DIR) {
/* QEMU only supports magic FAT format for now */
- if (disk->format && disk->format != VIR_STORAGE_FILE_FAT) {
+ if (disk->format > 0 && disk->format != VIR_STORAGE_FILE_FAT) {
virReportError(VIR_ERR_INTERNAL_ERROR,
_("unsupported disk driver type for '%s'"),
virStorageFileFormatTypeToString(disk->format));
diff --git a/src/qemu/qemu_domain.c b/src/qemu/qemu_domain.c
index 9675454..45f3a5e 100644
--- a/src/qemu/qemu_domain.c
+++ b/src/qemu/qemu_domain.c
@@ -2016,30 +2016,23 @@ qemuDomainDetermineDiskChain(struct qemud_driver *driver,
virDomainDiskDefPtr disk,
bool force)
{
- int format;
+ bool probe = driver->allowDiskFormatProbing;
if (!disk->src)
return 0;
- if (disk->chain) {
+ if (disk->backingChain) {
if (force) {
- virStorageFileFreeMetadata(disk->chain);
- disk->chain = NULL;
+ virStorageFileFreeMetadata(disk->backingChain);
+ disk->backingChain = NULL;
} else {
return 0;
}
}
- if (disk->format > 0)
- format = disk->format;
- else if (driver->allowDiskFormatProbing)
- format = VIR_STORAGE_FILE_AUTO;
- else
- format = VIR_STORAGE_FILE_RAW;
-
- disk->chain = virStorageFileGetMetadata(disk->src, format,
- driver->user, driver->group,
- driver->allowDiskFormatProbing);
- if (!disk->chain && !force)
+ disk->backingChain = virStorageFileGetMetadata(disk->src, disk->format,
+ driver->user, driver->group,
+ probe);
+ if (!disk->backingChain)
return -1;
return 0;
}
diff --git a/src/qemu/qemu_driver.c b/src/qemu/qemu_driver.c
index 7a47cf7..3829a89 100644
--- a/src/qemu/qemu_driver.c
+++ b/src/qemu/qemu_driver.c
@@ -5826,7 +5826,7 @@ qemuDomainAttachDeviceDiskLive(virConnectPtr conn,
vm->def->name);
goto end;
}
- if (qemuSetupDiskCgroup(driver, vm, cgroup, disk) < 0)
+ if (qemuSetupDiskCgroup(vm, cgroup, disk) < 0)
goto end;
}
switch (disk->device) {
@@ -5862,7 +5862,7 @@ qemuDomainAttachDeviceDiskLive(virConnectPtr conn,
}
if (ret != 0 && cgroup) {
- if (qemuTeardownDiskCgroup(driver, vm, cgroup, disk) < 0)
+ if (qemuTeardownDiskCgroup(vm, cgroup, disk) < 0)
VIR_WARN("Failed to teardown cgroup for disk path %s",
NULLSTR(disk->src));
}
@@ -6058,7 +6058,7 @@ qemuDomainChangeDiskMediaLive(virDomainObjPtr vm,
vm->def->name);
goto end;
}
- if (qemuSetupDiskCgroup(driver, vm, cgroup, disk) < 0)
+ if (qemuSetupDiskCgroup(vm, cgroup, disk) < 0)
goto end;
}
@@ -6077,7 +6077,7 @@ qemuDomainChangeDiskMediaLive(virDomainObjPtr vm,
}
if (ret != 0 && cgroup) {
- if (qemuTeardownDiskCgroup(driver, vm, cgroup, disk) < 0)
+ if (qemuTeardownDiskCgroup(vm, cgroup, disk) < 0)
VIR_WARN("Failed to teardown cgroup for disk path %s",
NULLSTR(disk->src));
}
@@ -10462,7 +10462,8 @@ typedef enum {
/* Several operations end up adding or removing a single element of a
* disk backing file chain; this helper function ensures that the lock
* manager, cgroup device controller, and security manager labelling
- * are all aware of each new file before it is added to a chain. */
+ * are all aware of each new file before it is added to a chain, and
+ * can revoke access to a file no longer needed in a chain. */
static int
qemuDomainPrepareDiskChainElement(struct qemud_driver *driver,
virDomainObjPtr vm,
@@ -10476,26 +10477,26 @@ qemuDomainPrepareDiskChainElement(struct qemud_driver *driver,
* temporarily modify the disk in place. */
char *origsrc = disk->src;
int origformat = disk->format;
- virStorageFileMetadataPtr origchain = disk->chain;
+ virStorageFileMetadataPtr origchain = disk->backingChain;
bool origreadonly = disk->readonly;
int ret = -1;
disk->src = (char *) file; /* casting away const is safe here */
disk->format = VIR_STORAGE_FILE_RAW;
- disk->chain = NULL;
+ disk->backingChain = NULL;
disk->readonly = mode == VIR_DISK_CHAIN_READ_ONLY;
if (mode == VIR_DISK_CHAIN_NO_ACCESS) {
if (virSecurityManagerRestoreImageLabel(driver->securityManager,
vm->def, disk) < 0)
VIR_WARN("Unable to restore security label on %s", disk->src);
- if (cgroup && qemuTeardownDiskCgroup(driver, vm, cgroup, disk) < 0)
+ if (cgroup && qemuTeardownDiskCgroup(vm, cgroup, disk) < 0)
VIR_WARN("Failed to teardown cgroup for disk path %s", disk->src);
if (virDomainLockDiskDetach(driver->lockManager, vm, disk) < 0)
VIR_WARN("Unable to release lock on %s", disk->src);
} else if (virDomainLockDiskAttach(driver->lockManager, driver->uri,
vm, disk) < 0 ||
- (cgroup && qemuSetupDiskCgroup(driver, vm, cgroup, disk) < 0) ||
+ (cgroup && qemuSetupDiskCgroup(vm, cgroup, disk) < 0) ||
virSecurityManagerSetImageLabel(driver->securityManager,
vm->def, disk) < 0) {
goto cleanup;
@@ -10506,7 +10507,7 @@ qemuDomainPrepareDiskChainElement(struct qemud_driver *driver,
cleanup:
disk->src = origsrc;
disk->format = origformat;
- disk->chain = origchain;
+ disk->backingChain = origchain;
disk->readonly = origreadonly;
return ret;
}
@@ -10802,7 +10803,6 @@ cleanup:
return ret;
}
-
/* The domain is expected to hold monitor lock. */
static int
qemuDomainSnapshotCreateSingleDiskActive(struct qemud_driver *driver,
@@ -10848,14 +10848,14 @@ qemuDomainSnapshotCreateSingleDiskActive(struct qemud_driver *driver,
VIR_FORCE_CLOSE(fd);
}
- /* XXX Here, we know we are about to alter disk->chain if
+ /* XXX Here, we know we are about to alter disk->backingChain if
* successful, so we nuke the existing chain so that future
* commands will recompute it. Better would be storing the chain
* ourselves rather than reprobing, but this requires modifying
* domain_conf and our XML to fully track the chain across
* libvirtd restarts. */
- virStorageFileFreeMetadata(disk->chain);
- disk->chain = NULL;
+ virStorageFileFreeMetadata(disk->backingChain);
+ disk->backingChain = NULL;
if (qemuDomainPrepareDiskChainElement(driver, vm, cgroup, disk, source,
VIR_DISK_CHAIN_READ_WRITE) < 0) {
@@ -12737,8 +12737,9 @@ qemuDomainBlockCommit(virDomainPtr dom, const char *path, const char *base,
if (!top) {
top_canon = disk->src;
- top_meta = disk->chain;
- } else if (!(top_canon = virStorageFileChainLookup(disk->chain, disk->src,
+ top_meta = disk->backingChain;
+ } else if (!(top_canon = virStorageFileChainLookup(disk->backingChain,
+ disk->src,
top, &top_meta,
&top_parent))) {
virReportError(VIR_ERR_INVALID_ARG,
@@ -12762,6 +12763,9 @@ qemuDomainBlockCommit(virDomainPtr dom, const char *path, const char *base,
base ? base : "(default)", top_canon, path);
goto endjob;
}
+ /* Note that this code exploits the fact that
+ * virStorageFileChainLookup guarantees a simple pointer
+ * comparison will work, rather than needing full-blown STREQ. */
if ((flags & VIR_DOMAIN_BLOCK_COMMIT_SHALLOW) &&
base_canon != top_meta->backingStore) {
virReportError(VIR_ERR_INVALID_ARG,
@@ -14165,7 +14169,7 @@ static virDriver qemuDriver = {
.domainBlockJobSetSpeed = qemuDomainBlockJobSetSpeed, /* 0.9.4 */
.domainBlockPull = qemuDomainBlockPull, /* 0.9.4 */
.domainBlockRebase = qemuDomainBlockRebase, /* 0.9.10 */
- .domainBlockCommit = qemuDomainBlockCommit, /* 0.10.3 */
+ .domainBlockCommit = qemuDomainBlockCommit, /* 1.0.0 */
.isAlive = qemuIsAlive, /* 0.9.8 */
.nodeSuspendForDuration = nodeSuspendForDuration, /* 0.9.8 */
.domainSetBlockIoTune = qemuDomainSetBlockIoTune, /* 0.9.8 */
diff --git a/src/qemu/qemu_hotplug.c b/src/qemu/qemu_hotplug.c
index ca441f2..7381921 100644
--- a/src/qemu/qemu_hotplug.c
+++ b/src/qemu/qemu_hotplug.c
@@ -2006,7 +2006,7 @@ int qemuDomainDetachPciDiskDevice(struct qemud_driver *driver,
VIR_WARN("Unable to restore security label on %s", dev->data.disk->src);
if (cgroup != NULL) {
- if (qemuTeardownDiskCgroup(driver, vm, cgroup, dev->data.disk) < 0)
+ if (qemuTeardownDiskCgroup(vm, cgroup, dev->data.disk) < 0)
VIR_WARN("Failed to teardown cgroup for disk path %s",
NULLSTR(dev->data.disk->src));
}
@@ -2089,7 +2089,7 @@ int qemuDomainDetachDiskDevice(struct qemud_driver *driver,
VIR_WARN("Unable to restore security label on %s", dev->data.disk->src);
if (cgroup != NULL) {
- if (qemuTeardownDiskCgroup(driver, vm, cgroup, dev->data.disk) < 0)
+ if (qemuTeardownDiskCgroup(vm, cgroup, dev->data.disk) < 0)
VIR_WARN("Failed to teardown cgroup for disk path %s",
NULLSTR(dev->data.disk->src));
}
diff --git a/src/qemu/qemu_monitor_json.c b/src/qemu/qemu_monitor_json.c
index d0ecd1e..d1ce9cc 100644
--- a/src/qemu/qemu_monitor_json.c
+++ b/src/qemu/qemu_monitor_json.c
@@ -3284,7 +3284,7 @@ cleanup:
int
qemuMonitorJSONBlockCommit(qemuMonitorPtr mon, const char *device,
const char *top, const char *base,
- unsigned long speed)
+ unsigned long long speed)
{
int ret = -1;
virJSONValuePtr cmd;
diff --git a/src/qemu/qemu_monitor_json.h b/src/qemu/qemu_monitor_json.h
index 71bc6aa..61127a7 100644
--- a/src/qemu/qemu_monitor_json.h
+++ b/src/qemu/qemu_monitor_json.h
@@ -239,7 +239,7 @@ int qemuMonitorJSONBlockCommit(qemuMonitorPtr mon,
const char *device,
const char *top,
const char *base,
- unsigned long bandwidth)
+ unsigned long long bandwidth)
ATTRIBUTE_NONNULL(1) ATTRIBUTE_NONNULL(2) ATTRIBUTE_NONNULL(3);
int qemuMonitorJSONArbitraryCommand(qemuMonitorPtr mon,
diff --git a/src/qemu/qemu_process.c b/src/qemu/qemu_process.c
index 1eb93a6..3a087e2 100644
--- a/src/qemu/qemu_process.c
+++ b/src/qemu/qemu_process.c
@@ -4121,18 +4121,6 @@ void qemuProcessStop(struct qemud_driver *driver,
networkReleaseActualDevice(net);
}
- /* XXX For now, disk chains should only be cached while qemu is
- * running. Since we don't track the chain in XML, a user is free
- * to update the chain while the domain is offline, and then when
- * they next boot the domain we should re-read the chain from the
- * files at that point in time. Only when we track the chain in
- * XML can we forbid the user from altering the chain of an
- * offline domain. */
- for (i = 0; i < def->ndisks; i++) {
- virStorageFileFreeMetadata(def->disks[i]->chain);
- def->disks[i]->chain = NULL;
- }
-
retry:
if ((ret = qemuRemoveCgroup(driver, vm, 0)) < 0) {
if (ret == -EBUSY && (retries++ < 5)) {
diff --git a/src/security/virt-aa-helper.c b/src/security/virt-aa-helper.c
index 729c0d1..263fc92 100644
--- a/src/security/virt-aa-helper.c
+++ b/src/security/virt-aa-helper.c
@@ -919,21 +919,13 @@ get_files(vahControl * ctl)
}
for (i = 0; i < ctl->def->ndisks; i++) {
- int ret;
- int format;
virDomainDiskDefPtr disk = ctl->def->disks[i];
- if (disk->format > 0)
- format = disk->format;
- else if (ctl->allowDiskFormatProbing)
- format = VIR_STORAGE_FILE_AUTO;
- else
- format = VIR_STORAGE_FILE_RAW;
-
/* XXX - if we knew the qemu user:group here we could send it in
* so that the open could be re-tried as that user:group.
*/
- disk->chain = virStorageFileGetMetadata(disk->src, format, -1, -1,
+ disk->chain = virStorageFileGetMetadata(disk->src, disk->format,
+ -1, -1,
ctl->allowDiskFormatProbing,
NULL);
@@ -942,8 +934,7 @@ get_files(vahControl * ctl)
* be passing ignoreOpenFailure = false and handle open errors more
* careful than just ignoring them.
*/
- ret = virDomainDiskDefForeachPath(disk, true, add_file_path, &buf);
- if (ret != 0)
+ if (virDomainDiskDefForeachPath(disk, true, add_file_path, &buf) < 0)
goto clean;
}
diff --git a/src/util/storage_file.c b/src/util/storage_file.c
index 218891e..882df6e 100644
--- a/src/util/storage_file.c
+++ b/src/util/storage_file.c
@@ -271,7 +271,8 @@ qcow2GetBackingStoreFormat(int *format,
break;
*format = virStorageFileFormatTypeFromString(
((const char *)buf)+offset);
- break;
+ if (*format <= VIR_STORAGE_FILE_NONE)
+ return -1;
}
offset += len;
@@ -353,12 +354,10 @@ qcowXGetBackingStore(char **res,
* between the end of the header (QCOW2_HDR_TOTAL_SIZE)
* and the start of the backingStoreName (offset)
*/
- if (isQCow2 && format) {
+ if (isQCow2 && format &&
qcow2GetBackingStoreFormat(format, buf, buf_size, QCOW2_HDR_TOTAL_SIZE,
- offset);
- if (*format <= VIR_STORAGE_FILE_NONE)
- return BACKING_STORE_INVALID;
- }
+ offset) < 0)
+ return BACKING_STORE_INVALID;
return BACKING_STORE_OK;
}
@@ -517,7 +516,7 @@ qedGetBackingStore(char **res,
(*res)[size] = '\0';
if (flags & QED_F_BACKING_FORMAT_NO_PROBE)
- *format = virStorageFileFormatTypeFromString("raw");
+ *format = VIR_STORAGE_FILE_RAW;
else
*format = VIR_STORAGE_FILE_AUTO_SAFE;
@@ -954,7 +953,7 @@ virStorageFileGetMetadataRecurse(const char *path, int format,
ret = virStorageFileGetMetadataFromFD(path, fd, format);
if (VIR_CLOSE(fd) < 0)
- virReportSystemError(errno, _("could not close file %s"), path);
+ VIR_WARN("could not close file %s", path);
if (ret && ret->backingStoreIsFile) {
if (ret->backingStoreFormat == VIR_STORAGE_FILE_AUTO && !allow_probe)
@@ -1004,6 +1003,9 @@ virStorageFileGetMetadata(const char *path, int format,
if (!cycle)
return NULL;
+
+ if (format <= VIR_STORAGE_FILE_NONE)
+ format = allow_probe ? VIR_STORAGE_FILE_AUTO : VIR_STORAGE_FILE_RAW;
ret = virStorageFileGetMetadataRecurse(path, format, uid, gid,
allow_probe, cycle);
virHashFree(cycle);
@@ -1261,13 +1263,14 @@ const char *virStorageFileGetSCSIKey(const char *path)
}
#endif
-/* Given a CHAIN that starts at the named file START, return the
- * canonical name for the backing file NAME within that chain, or pass
- * NULL to find the base of the chain. If *META is not NULL, set it
+/* Given a CHAIN that starts at the named file START, return a string
+ * pointing to either START or within CHAIN that gives the preferred
+ * name for the backing file NAME within that chain. Pass NULL for
+ * NAME to find the base of the chain. If META is not NULL, set *META
* to the point in the chain that describes NAME (or to NULL if the
- * backing element is not a file). If *PARENT is not NULL, set it to
- * the canonical name of the parent (or to NULL if NAME matches
- * START). The results point within CHAIN, and must not be
+ * backing element is not a file). If PARENT is not NULL, set *PARENT
+ * to the preferred name of the parent (or to NULL if NAME matches
+ * START). Since the results point within CHAIN, they must not be
* independently freed. */
const char *
virStorageFileChainLookup(virStorageFileMetadataPtr chain, const char *start,
@@ -1301,12 +1304,12 @@ virStorageFileChainLookup(virStorageFileMetadataPtr chain, const char *start,
STREQ(name, owner->backingStore)) {
break;
} else if (owner->backingStoreIsFile) {
- char *abs = absolutePathFromBaseFile(*parent, name);
- if (abs && STREQ(abs, owner->backingStore)) {
- VIR_FREE(abs);
+ char *absName = absolutePathFromBaseFile(*parent, name);
+ if (absName && STREQ(absName, owner->backingStore)) {
+ VIR_FREE(absName);
break;
}
- VIR_FREE(abs);
+ VIR_FREE(absName);
}
*parent = owner->backingStore;
owner = owner->backingMeta;
--
1.7.11.7
12 years
[libvirt] [PATCH] Add NUMA memory and CPU thread siblings to capabilities
by Dusty Mabe
This patch is a follow up to https://www.redhat.com/archives/libvir-list/2012-October/msg01382.html.
Since that one hasn't been reviewed yet I combined that work with new work to add memory
information to virsh capabilities output and am submitting them both in this patch.
With this virsh capabilities output will have the following form:
<topology>
<cells num='2'>
<cell id='0'>
<memory unit='KiB'>12572412</memory>
<cpus num='12'>
<cpu id='0' thread_siblings='0,12'/>
.
.
</cpus>
</cell>
</cells>
</topology>
Hope you guys can find this useful.
Dusty
Dusty Mabe (1):
Add NUMA memory and CPU thread siblings to capabilities
docs/schemas/capability.rng | 15 +++
src/conf/capabilities.c | 65 ++++++++++---
src/conf/capabilities.h | 7 +-
src/nodeinfo.c | 155 +++++++++++++++++++++++++++++-
src/test/test_driver.c | 2 +-
src/xen/xend_internal.c | 4 +-
tests/capabilityschemadata/caps-test3.xml | 88 +++++++++++++++++
7 files changed, 319 insertions(+), 17 deletions(-)
create mode 100644 tests/capabilityschemadata/caps-test3.xml
--
1.7.11.7
12 years
[libvirt] [PATCH] net: update default.xml to match creation by libvirt
by Eric Blake
I noticed that after a fresh install, the file
/etc/libvirt/qemu/networks/default.xml lacked the usual header
inserted by modern 'virsh net-edit'; and traced it to the fact
that libvirt.spec installs this file by copying a template
rather than using libvirt API. We might as well make our template
match what libvirt itself would generate in that location.
* src/network/default.xml: Add header and newer XML details.
---
src/network/default.xml | 11 +++++++++--
1 file changed, 9 insertions(+), 2 deletions(-)
diff --git a/src/network/default.xml b/src/network/default.xml
index 9cfc01e..e124621 100644
--- a/src/network/default.xml
+++ b/src/network/default.xml
@@ -1,7 +1,14 @@
+<!--
+WARNING: THIS IS AN AUTO-GENERATED FILE. CHANGES TO IT ARE LIKELY TO BE
+OVERWRITTEN AND LOST. Changes to this xml configuration should be made using:
+ virsh net-edit default
+or other application using the libvirt API.
+-->
+
<network>
<name>default</name>
- <bridge name="virbr0" />
- <forward/>
+ <forward mode='nat'/>
+ <bridge name="virbr0" stp='on' delay='0'/>
<ip address="192.168.122.1" netmask="255.255.255.0">
<dhcp>
<range start="192.168.122.2" end="192.168.122.254" />
--
1.7.11.7
12 years
[libvirt] [PATCH 0/3] dnsmasq conf-file, interface=, and DHCPv6
by Gene Czarcinski
The three sets of patches implement the changes listed below. Although
they were developed on v1.0.0, they have been updated to the current
git master as of the time of their submital [so if anything major
updated bridge_driver.c, network_conf.c or dnamasq.c, your milage may vary].
These three patches are dependent in the order shown.
Along with the usual make, make check, and make syntax-check, a dist tarball
was created and it, along with a spec file, were used to create rpms.
There has been only limited testing with the newly created rpms but there
was extensive testing of these patches fitted to libvirt v1.0.0.
Gene Czarcinski (3):
v6-6: put dnsmasq parameters into a file
v6-6: add dnsmasq interface= parameter
v6-6: Add support for DHCPv6
docs/formatnetwork.html.in | 108 ++++-
src/conf/network_conf.c | 100 +++--
src/network/bridge_driver.c | 461 +++++++++++++--------
src/network/bridge_driver.h | 7 +-
src/util/dnsmasq.c | 9 +-
tests/networkxml2argvdata/isolated-network.argv | 25 +-
.../networkxml2argvdata/nat-network-dns-hosts.argv | 16 +-
.../nat-network-dns-srv-record-minimal.argv | 36 +-
.../nat-network-dns-srv-record.argv | 36 +-
.../nat-network-dns-txt-record.argv | 30 +-
tests/networkxml2argvdata/nat-network.argv | 28 +-
tests/networkxml2argvdata/netboot-network.argv | 29 +-
.../networkxml2argvdata/netboot-proxy-network.argv | 26 +-
tests/networkxml2argvdata/routed-network.argv | 14 +-
tests/networkxml2argvtest.c | 46 +-
15 files changed, 621 insertions(+), 350 deletions(-)
--
1.7.11.7
12 years
[libvirt] [PATCH 2/2] AbortJob: Fix documentation
by Michal Privoznik
This API was never synchronous and probably doesn't even need to be.
---
I am sending this as a separate patch as regardless if my
previous patch got accepted or not this one is still true.
src/libvirt.c | 3 +--
1 files changed, 1 insertions(+), 2 deletions(-)
diff --git a/src/libvirt.c b/src/libvirt.c
index bcb8233..bdb1dc6 100644
--- a/src/libvirt.c
+++ b/src/libvirt.c
@@ -17182,8 +17182,7 @@ error:
* @domain: a domain object
*
* Requests that the current background job be aborted at the
- * soonest opportunity. This will block until the job has
- * either completed, or aborted.
+ * soonest opportunity.
*
* Returns 0 in case of success and -1 in case of failure.
*/
--
1.7.8.6
12 years
