[libvirt] by libvirt api(virStoragePoolRefresh) to refresh pool, discovered the connection is very slow
饶俊明
RAOJUNMING113 at pingan.com.cn
Thu Sep 24 03:24:04 UTC 2015
Hello
In ours project,use libvirt(libvirt-0.10.2-46.el6) to manage storage pool(the type of pool is ceph rbd),
by libvirt api(virStoragePoolRefresh) to refresh pool, discovered the connection(libvirt to ceph) is very slow
libvirt is how to deal with pool refresh.
tks!!!
Jason rao
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Today's Topics:
1. [PATCH] domain: Fix migratable XML with graphics/@listen
(Jiri Denemark)
2. [PATCH] storage: Fix incorrect format for <disk> <auth> XML
(John Ferlan)
3. Re: [PATCH v2] qemuDomainDeviceDefPostParse: Drop useless
checks (John Ferlan)
4. Re: [PATCH RFC 4/7] libxl: implement virDomainBlockStats
(Jim Fehlig)
5. [PATCH 0/6] Fix some Coverity issues (John Ferlan)
----------------------------------------------------------------------
Message: 1
Date: Wed, 23 Sep 2015 22:48:14 +0200
From: Jiri Denemark <jdenemar at redhat.com>
To: libvir-list at redhat.com
Subject: [libvirt] [PATCH] domain: Fix migratable XML with
graphics/@listen
Message-ID:
<1e763711f268f0f5d09f6a70aab87bf13dd459f9.1443041294.git.jdenemar at redhat.com>
As of commit 6992994, we set graphics/@listen attribute according to the first listen child element even if that element is of type='network'.
This was done for backward compatibility with applications which only support the original listen attribute. However, by doing so we broke migration to older libvirt which tried to check that the listen attribute matches one of the listen child elements but which did not take type='network' elements into account.
We are not concerned about compatibility with old applications when formatting domain XML for migration for two reasons. The XML is consumed only by libvirtd and the IP address associated with type='network'
listen address on the source host is just useless on the destination host. Thus, we can safely avoid propagating the type='network' IP address to graphics/@listen attribute when creating migratable XML.
https://bugzilla.redhat.com/show_bug.cgi?id=1265111
Signed-off-by: Jiri Denemark <jdenemar at redhat.com>
---
src/conf/domain_conf.c | 16 +++++++---------
1 file changed, 7 insertions(+), 9 deletions(-)
diff --git a/src/conf/domain_conf.c b/src/conf/domain_conf.c index c890977..033ae46 100644
--- a/src/conf/domain_conf.c
+++ b/src/conf/domain_conf.c
@@ -21020,19 +21020,17 @@ virDomainGraphicsDefFormat(virBufferPtr buf,
* <graphics>. This is done to improve backward compatibility.
*/
for (i = 0; i < def->nListens; i++) {
- virDomainGraphicsListenType listenType;
-
if (flags & VIR_DOMAIN_DEF_FORMAT_MIGRATABLE &&
def->listens[i].fromConfig)
continue;
- listenType = virDomainGraphicsListenGetType(def, i);
- if (listenType == VIR_DOMAIN_GRAPHICS_LISTEN_TYPE_ADDRESS ||
- (listenType == VIR_DOMAIN_GRAPHICS_LISTEN_TYPE_NETWORK &&
- !(flags & VIR_DOMAIN_DEF_FORMAT_INACTIVE))) {
- if ((listenAddr = virDomainGraphicsListenGetAddress(def, i)))
- break;
- }
+ if (def->listens[i].type == VIR_DOMAIN_GRAPHICS_LISTEN_TYPE_NETWORK &&
+ flags & (VIR_DOMAIN_DEF_FORMAT_INACTIVE |
+ VIR_DOMAIN_DEF_FORMAT_MIGRATABLE))
+ continue;
+
+ if ((listenAddr = virDomainGraphicsListenGetAddress(def, i)))
+ break;
}
virBufferAsprintf(buf, "<graphics type='%s'", type);
--
2.5.3
------------------------------
Message: 2
Date: Wed, 23 Sep 2015 16:54:35 -0400
From: John Ferlan <jferlan at redhat.com>
To: libvir-list at redhat.com
Subject: [libvirt] [PATCH] storage: Fix incorrect format for <disk>
<auth> XML
Message-ID: <1443041675-19738-1-git-send-email-jferlan at redhat.com>
https://bugzilla.redhat.com/show_bug.cgi?id=1256999
When creating a copy of the 'authdef', need to take into account the
slight variation between <disk> and <pool> before blindly copying
the 'authType' field. This ensures virStorageAuthDefFormat will
properly format the <auth> XML for a <disk>.
Signed-off-by: John Ferlan <jferlan at redhat.com>
---
src/util/virstoragefile.c | 7 ++++++-
1 file changed, 6 insertions(+), 1 deletion(-)
diff --git a/src/util/virstoragefile.c b/src/util/virstoragefile.c
index 2aa1d90..0b72cb3 100644
--- a/src/util/virstoragefile.c
+++ b/src/util/virstoragefile.c
@@ -1522,7 +1522,12 @@ virStorageAuthDefCopy(const virStorageAuthDef *src)
/* Not present for storage pool, but used for disk source */
if (VIR_STRDUP(ret->secrettype, src->secrettype) < 0)
goto error;
- ret->authType = src->authType;
+ /* A <disk> uses secrettype, while a <pool> uses authType, so
+ * if we have a secrettype, then don't copy authType; otherwise,
+ * we will format the authType in <disk>
+ */
+ if (!ret->secrettype)
+ ret->authType = src->authType;
ret->secretType = src->secretType;
if (ret->secretType == VIR_STORAGE_SECRET_TYPE_UUID) {
memcpy(ret->secret.uuid, src->secret.uuid, sizeof(ret->secret.uuid));
--
2.1.0
------------------------------
Message: 3
Date: Wed, 23 Sep 2015 18:03:47 -0400
From: John Ferlan <jferlan at redhat.com>
To: Michal Privoznik <mprivozn at redhat.com>, libvir-list at redhat.com
Subject: Re: [libvirt] [PATCH v2] qemuDomainDeviceDefPostParse: Drop
useless checks
Message-ID: <560321C3.1000808 at redhat.com>
Content-Type: text/plain; charset=windows-1252
On 09/23/2015 07:19 AM, Michal Privoznik wrote:
> Now that virQEMUDriverCreateXMLConf is never called with NULL
> (after 086f37e97aab) we can safely drop useless check in
> qemuDomainDeviceDefPostParse as we are guaranteed to be always
> called with the driver initialized. Therefore checking if driver
> is NULL makes no sense. Moreover, if we mix it with direct driver
> dereference. And after that, we are sure that nor @cfg will be
> NULL, therefore we can drop checks for that too.
>
> Signed-off-by: Michal Privoznik <mprivozn at redhat.com>
> ---
>
> diff to v1:
> - drop checks for !cfg too
>
> src/qemu/qemu_domain.c | 64 ++++++++++++++++++++------------------------------
> 1 file changed, 26 insertions(+), 38 deletions(-)
>
ACK
John
Coverity error goes away too.
------------------------------
Message: 4
Date: Wed, 23 Sep 2015 16:24:30 -0600
From: Jim Fehlig <jfehlig at suse.com>
To: Joao Martins <joao.m.martins at oracle.com>
Cc: libvir-list at redhat.com
Subject: Re: [libvirt] [PATCH RFC 4/7] libxl: implement
virDomainBlockStats
Message-ID: <5603269E.6090101 at suse.com>
Content-Type: text/plain; charset=ISO-8859-1
Joao Martins wrote:
> Introduce initial support for domainBlockStats API call that
> allow us to query block device statistics. openstack nova
> uses this API call to query block statistics, alongside
> virDomainMemoryStats and virDomainInterfaceStats. Note that
> this patch only introduces it for VBD for starters. QDisk
> will come in a separate patch series.
>
> A new statistics data structure is introduced to fit common
> statistics among others specific to the underlying block
> backends. For the VBD statistics on linux these are exported
> via sysfs on the path:
>
> "/sys/bus/xen-backend/devices/vbd-<domid>-<devid>/statistics"
>
> To calculate the block devid two libxl functions were ported
> (libxlDiskPathMatches and libxlDiskPathParse) to libvirt to
> make sure the devid is calculate in the same way as libxl.
> Each backend implements its own function to extract statistics
> and let there be handled the different platforms. An alternative
> would be to reuse libvirt xen driver function.
>
> VBD stats are exposed in reqs and number of sectors from
> blkback, and it's up to us to convert it to sector sizes.
> The sector size is gathered through xenstore in the device
> backend entry "physical-sector-size". This adds up an extra
> dependency namely of xenstore for doing the xs_read.
>
> BlockStatsFlags variant is also implemented which has the
> added benefit of getting the number of flush requests.
>
> Signed-off-by: Joao Martins <joao.m.martins at oracle.com>
> ---
> configure.ac | 2 +-
> src/libxl/libxl_driver.c | 420 +++++++++++++++++++++++++++++++++++++++++++++++
> 2 files changed, 421 insertions(+), 1 deletion(-)
>
> diff --git a/configure.ac b/configure.ac
> index ef7fbdb..56fb266 100644
> --- a/configure.ac
> +++ b/configure.ac
> @@ -896,7 +896,7 @@ if test "$with_libxl" != "no" ; then
> LIBS="$LIBS $LIBXL_LIBS"
> AC_CHECK_LIB([xenlight], [libxl_ctx_alloc], [
> with_libxl=yes
> - LIBXL_LIBS="$LIBXL_LIBS -lxenlight -lxenctrl"
> + LIBXL_LIBS="$LIBXL_LIBS -lxenlight -lxenctrl -lxenstore"
> ],[
> if test "$with_libxl" = "yes"; then
> fail=1
> diff --git a/src/libxl/libxl_driver.c b/src/libxl/libxl_driver.c
> index dc83083..fd952a3 100644
> --- a/src/libxl/libxl_driver.c
> +++ b/src/libxl/libxl_driver.c
> @@ -59,6 +59,7 @@
> #include "network/bridge_driver.h"
> #include "locking/domain_lock.h"
> #include "virstats.h"
> +#include <xenstore.h>
>
> #define VIR_FROM_THIS VIR_FROM_LIBXL
>
> @@ -75,6 +76,7 @@ VIR_LOG_INIT("libxl.libxl_driver");
> #define LIBXL_CONFIG_FORMAT_SEXPR "xen-sxpr"
>
> #define LIBXL_NB_TOTAL_CPU_STAT_PARAM 1
> +#define LIBXL_NB_TOTAL_BLK_STAT_PARAM 6
>
> #define HYPERVISOR_CAPABILITIES "/proc/xen/capabilities"
> #define HYPERVISOR_XENSTORED "/dev/xen/xenstored"
> @@ -103,6 +105,25 @@ struct _libxlOSEventHookInfo {
> int id;
> };
>
> +/* Object used to store disk statistics across multiple xen backends */
> +typedef struct _libxlBlockStats libxlBlockStats;
> +typedef libxlBlockStats *libxlBlockStatsPtr;
> +struct _libxlBlockStats {
> + long long rd_req;
> + long long rd_bytes;
> + long long wr_req;
> + long long wr_bytes;
> + long long f_req;
> +
> + char *backend;
> + union {
> + struct {
> + long long ds_req;
> + long long oo_req;
> + } vbd;
> + } u;
> +};
> +
> /* Function declarations */
> static int
> libxlDomainManagedSaveLoad(virDomainObjPtr vm,
> @@ -4641,6 +4662,403 @@ libxlDomainIsUpdated(virDomainPtr dom)
> }
>
> static int
> +libxlDiskPathMatches(const char *virtpath, const char *devtype,
> + int *index_r, int max_index,
> + int *partition_r, int max_partition)
> +{
> + const char *p;
> + char *ep;
> + int tl, c;
> + long pl;
> +
> + tl = strlen(devtype);
> + if (memcmp(virtpath, devtype, tl))
> + return 0;
> +
> + /* We decode the drive letter as if it were in base 52
> + * with digits a-zA-Z, more or less */
> + *index_r = -1;
> + p = virtpath + tl;
> + for (;;) {
> + c = *p++;
> + if (c >= 'a' && c <= 'z') {
> + c -= 'a';
> + } else {
> + --p;
> + break;
> + }
> + (*index_r)++;
> + (*index_r) *= 26;
> + (*index_r) += c;
> +
> + if (*index_r > max_index)
> + return 0;
> + }
> +
> + if (!*p) {
> + *partition_r = 0;
> + return 1;
> + }
> +
> + if (*p == '0')
> + return 0; /* leading zeroes not permitted in partition number */
> +
> + if (virStrToLong_l(p, &ep, 10, &pl) < 0)
> + return 0;
> +
> + if (pl > max_partition || *ep)
> + return 0;
> +
> + *partition_r = pl;
> + return 1;
> +}
> +
> +static int
> +libxlDiskPathParse(const char *virtpath, int *pdisk, int *ppartition)
> +{
> + int disk, partition;
> + char *ep;
> + unsigned long ul;
> + int chrused;
> +
> + chrused = -1;
> + if ((sscanf(virtpath, "d%ip%i%n", &disk, &partition, &chrused) >= 2
> + && chrused == strlen(virtpath) && disk < (1<<20) && partition < 256)
> + ||
> + libxlDiskPathMatches(virtpath, "xvd",
> + &disk, (1<<20)-1,
> + &partition, 255)) {
> + if (pdisk) *pdisk = disk;
> + if (ppartition) *ppartition = partition;
> + if (disk <= 15 && partition <= 15)
> + return (202 << 8) | (disk << 4) | partition;
> + else
> + return (1 << 28) | (disk << 8) | partition;
> + }
> +
> + errno = virStrToLong_ul(virtpath, &ep, 0, &ul);
> + if (!errno && !*ep && ul <= INT_MAX) {
> + /* FIXME: should parse ul to determine these. */
> + if (pdisk || ppartition)
> + return -1;
> + return ul;
> + }
> +
> + if (libxlDiskPathMatches(virtpath, "hd",
> + &disk, 3,
> + &partition, 63)) {
> + if (pdisk) *pdisk = disk;
> + if (ppartition) *ppartition = partition;
> + return ((disk<2 ? 3 : 22) << 8) | ((disk & 1) << 6) | partition;
> + }
> + if (libxlDiskPathMatches(virtpath, "sd",
> + &disk, 15,
> + &partition, 15)) {
> + if (pdisk) *pdisk = disk;
> + if (ppartition) *ppartition = partition;
> + return (8 << 8) | (disk << 4) | partition;
> + }
> + return -1;
> +}
> +
> +#define LIBXL_VBD_SECTOR_SIZE 512
> +
> +static int
> +libxlDiskSectorSize(int domid, int devno)
> +{
> + char *path, *val;
> + struct xs_handle *handle;
> + int ret = LIBXL_VBD_SECTOR_SIZE;
> + unsigned int len;
> +
> + handle = xs_daemon_open_readonly();
> + if (!handle) {
> + virReportError(VIR_ERR_INTERNAL_ERROR,
> + "%s", _("cannot read sector size"));
> + return ret;
> + }
> +
> + if (virAsprintf(&path, "/local/domain/%d/device/vbd/%d/backend",
> + domid, devno) < 0)
>
Indentation looks off.
> + goto close;
> +
> + if ((val = xs_read(handle, XBT_NULL, path, &len)) == NULL)
> + goto cleanup;
> +
> + VIR_FREE(path);
> + if (virAsprintf(&path, "%s/physical-sector-size", val) < 0) {
> + VIR_FREE(val);
> + goto close;
> + }
> +
> + VIR_FREE(val);
> + if ((val = xs_read(handle, XBT_NULL, path, &len)) == NULL)
> + goto cleanup;
> +
> + if (sscanf(val, "%d", &ret) != 1)
> + ret = -1;
>
Should ret be set back to LIBXL_VBD_SECTOR_SIZE? '-1' wouldn't be a good
value for the calling function.
> +
> + VIR_FREE(val);
> +
> + cleanup:
> + VIR_FREE(path);
> + close:
> + xs_daemon_close(handle);
> + return ret;
> +}
> +
> +static int
> +libxlDomainBlockStatsVBD(virDomainObjPtr vm,
> + const char *dev,
> + libxlBlockStatsPtr stats)
> +{
> + int ret = -1;
> + int devno = libxlDiskPathParse(dev, NULL, NULL);
> + int size = libxlDiskSectorSize(vm->def->id, devno);
> +#ifdef __linux__
> + char *path, *name, *val;
> + unsigned long long stat;
> +
> + if (VIR_STRDUP(stats->backend, "vbd") < 0) {
> + virReportError(VIR_ERR_OPERATION_INVALID,
> + "%s", _("cannot set backend"));
>
VIR_STRDUP() already reports OOM error, which is about the only one it
can encounter.
> + return -1;
> + }
> +
> + ret = virAsprintf(&path, "/sys/bus/xen-backend/devices/vbd-%d-%d/statistics",
> + vm->def->id, devno);
>
The usual pattern is 'if (virAsprintf(...) < 0)'.
> +
> + if (!virFileExists(path)) {
> + virReportError(VIR_ERR_OPERATION_INVALID,
> + "%s", _("cannot open bus path"));
>
I think the error should be VIR_ERR_OPERATION_FAILED.
> + goto cleanup;
> + }
> +
> +#define LIBXL_SET_VBDSTAT(FIELD, VAR, MUL) \
>
Indentation is off here. Fails 'make syntax-check' with cppi installed.
> + if ((virAsprintf(&name, "%s/"FIELD, path) < 0) || \
> + (virFileReadAll(name, 256, &val) < 0) || \
> + (sscanf(val, "%llu", &stat) != 1)) { \
> + virReportError(VIR_ERR_OPERATION_INVALID, \
> + _("cannot read %s"), name); \
>
VIR_ERR_OPERATION_FAILED?
> + goto cleanup; \
> + } \
> + VAR += (stat * MUL); \
> + VIR_FREE(name); \
> + VIR_FREE(val);
> +
> + LIBXL_SET_VBDSTAT("f_req", stats->f_req, 1)
> + LIBXL_SET_VBDSTAT("wr_req", stats->wr_req, 1)
> + LIBXL_SET_VBDSTAT("rd_req", stats->rd_req, 1)
> + LIBXL_SET_VBDSTAT("wr_sect", stats->wr_bytes, size)
> + LIBXL_SET_VBDSTAT("rd_sect", stats->rd_bytes, size)
> +
> + LIBXL_SET_VBDSTAT("ds_req", stats->u.vbd.ds_req, size)
> + LIBXL_SET_VBDSTAT("oo_req", stats->u.vbd.oo_req, 1)
> + ret = 0;
> +
> + cleanup:
> + VIR_FREE(name);
> + VIR_FREE(path);
> + VIR_FREE(val);
>
This will only cleanup 'name' and 'val' from the last invocation of the
LIBXL_SET_VBDSTAT macro. 'name' and 'val' from the prior invocations
will be leaked.
> +
> +#undef LIBXL_SET_VBDSTAT
>
Another case of failing 'make syntax-check' with cppi installed.
Regards,
Jim
> +
> +#else
> + virReportError(VIR_ERR_OPERATION_UNSUPPORTED,
> + "%s", _("platform unsupported"));
> +#endif
> + return ret;
> +}
> +
> +static int
> +libxlDomainBlockStatsGatherSingle(virDomainObjPtr vm,
> + const char *path,
> + libxlBlockStatsPtr stats)
> +{
> + virDomainDiskDefPtr disk;
> + const char *disk_drv;
> + int ret = -1, disk_fmt;
> +
> + if (!(disk = virDomainDiskByName(vm->def, path, false))) {
> + virReportError(VIR_ERR_OPERATION_INVALID,
> + _("invalid path: %s"), path);
> + return ret;
> + }
> +
> + disk_fmt = virDomainDiskGetFormat(disk);
> + if (!(disk_drv = virDomainDiskGetDriver(disk)))
> + disk_drv = "qemu";
> +
> + if (STREQ(disk_drv, "phy")) {
> + if (disk_fmt != VIR_STORAGE_FILE_RAW &&
> + disk_fmt != VIR_STORAGE_FILE_NONE) {
> + virReportError(VIR_ERR_OPERATION_UNSUPPORTED,
> + _("unsupported format %s"),
> + virStorageFileFormatTypeToString(disk_fmt));
> + return ret;
> + }
> +
> + ret = libxlDomainBlockStatsVBD(vm, path, stats);
> + } else {
> + virReportError(VIR_ERR_OPERATION_UNSUPPORTED,
> + _("unsupported disk driver %s"),
> + disk_drv);
> + return ret;
> + }
> + return ret;
> +}
> +
> +static int
> +libxlDomainBlockStatsGather(virDomainObjPtr vm,
> + const char *path,
> + libxlBlockStatsPtr stats)
> +{
> + int ret = -1;
> + if (*path) {
> + if (libxlDomainBlockStatsGatherSingle(vm, path, stats) < 0)
> + return ret;
> + } else {
> + size_t i;
> + for (i = 0; i < vm->def->ndisks; ++i) {
> + if (libxlDomainBlockStatsGatherSingle(vm, vm->def->disks[i]->dst,
> + stats) < 0)
> + return ret;
> + }
> + }
> + return 0;
> +}
> +
> +static int
> +libxlDomainBlockStats(virDomainPtr dom,
> + const char *path,
> + virDomainBlockStatsPtr stats)
> +{
> + libxlDriverPrivatePtr driver = dom->conn->privateData;
> + virDomainObjPtr vm;
> + libxlBlockStats blkstats;
> + int ret = -1;
> +
> + if (!(vm = libxlDomObjFromDomain(dom)))
> + goto cleanup;
> +
> + if (virDomainBlockStatsEnsureACL(dom->conn, vm->def) < 0)
> + goto cleanup;
> +
> + if (libxlDomainObjBeginJob(driver, vm, LIBXL_JOB_QUERY) < 0)
> + goto cleanup;
> +
> + if (!virDomainObjIsActive(vm)) {
> + virReportError(VIR_ERR_OPERATION_INVALID,
> + "%s", _("domain is not running"));
> + goto endjob;
> + }
> +
> + memset(&blkstats, 0, sizeof(libxlBlockStats));
> + if ((ret = libxlDomainBlockStatsGather(vm, path, &blkstats)) < 0)
> + goto endjob;
> +
> + stats->rd_req = blkstats.rd_req;
> + stats->rd_bytes = blkstats.rd_bytes;
> + stats->wr_req = blkstats.wr_req;
> + stats->wr_bytes = blkstats.wr_bytes;
> + if (STREQ_NULLABLE(blkstats.backend, "vbd"))
> + stats->errs = blkstats.u.vbd.oo_req;
> + else
> + stats->errs = -1;
> +
> + endjob:
> + if (!libxlDomainObjEndJob(driver, vm)) {
> + virObjectUnlock(vm);
> + vm = NULL;
> + }
> +
> + cleanup:
> + if (vm)
> + virObjectUnlock(vm);
> + return ret;
> +}
> +
> +static int
> +libxlDomainBlockStatsFlags(virDomainPtr dom,
> + const char *path,
> + virTypedParameterPtr params,
> + int *nparams,
> + unsigned int flags)
> +{
> + libxlDriverPrivatePtr driver = dom->conn->privateData;
> + virDomainObjPtr vm;
> + libxlBlockStats blkstats;
> + int nstats;
> + int ret = -1;
> +
> + virCheckFlags(VIR_TYPED_PARAM_STRING_OKAY, -1);
> +
> + flags &= ~VIR_TYPED_PARAM_STRING_OKAY;
> +
> + if (!(vm = libxlDomObjFromDomain(dom)))
> + goto cleanup;
> +
> + if (virDomainBlockStatsFlagsEnsureACL(dom->conn, vm->def) < 0)
> + goto cleanup;
> +
> + if (libxlDomainObjBeginJob(driver, vm, LIBXL_JOB_QUERY) < 0)
> + goto cleanup;
> +
> + if (!virDomainObjIsActive(vm)) {
> + virReportError(VIR_ERR_OPERATION_INVALID,
> + "%s", _("domain is not running"));
> + goto endjob;
> + }
> +
> + /* return count of supported stats */
> + if (*nparams == 0) {
> + *nparams = LIBXL_NB_TOTAL_BLK_STAT_PARAM;
> + ret = 0;
> + goto endjob;
> + }
> +
> + memset(&blkstats, 0, sizeof(libxlBlockStats));
> + if ((ret = libxlDomainBlockStatsGather(vm, path, &blkstats)) < 0)
> + goto endjob;
> +
> + nstats = 0;
> +
> +#define LIBXL_BLKSTAT_ASSIGN_PARAM(VAR, NAME) \
> + if (nstats < *nparams && (blkstats.VAR) != -1) { \
> + if (virTypedParameterAssign(params + nstats, NAME, \
> + VIR_TYPED_PARAM_LLONG, (blkstats.VAR)) < 0) \
> + goto endjob; \
> + nstats++; \
> + }
> +
> + LIBXL_BLKSTAT_ASSIGN_PARAM(wr_bytes, VIR_DOMAIN_BLOCK_STATS_WRITE_BYTES);
> + LIBXL_BLKSTAT_ASSIGN_PARAM(wr_req, VIR_DOMAIN_BLOCK_STATS_WRITE_REQ);
> +
> + LIBXL_BLKSTAT_ASSIGN_PARAM(rd_bytes, VIR_DOMAIN_BLOCK_STATS_READ_BYTES);
> + LIBXL_BLKSTAT_ASSIGN_PARAM(rd_req, VIR_DOMAIN_BLOCK_STATS_READ_REQ);
> +
> + LIBXL_BLKSTAT_ASSIGN_PARAM(f_req, VIR_DOMAIN_BLOCK_STATS_FLUSH_REQ);
> +
> + if (STREQ_NULLABLE(blkstats.backend, "vbd"))
> + LIBXL_BLKSTAT_ASSIGN_PARAM(u.vbd.oo_req, VIR_DOMAIN_BLOCK_STATS_ERRS);
> +
> + *nparams = nstats;
> +
> +#undef LIBXL_BLKSTAT_ASSIGN_PARAM
> +
> + endjob:
> + if (!libxlDomainObjEndJob(driver, vm)) {
> + virObjectUnlock(vm);
> + vm = NULL;
> + }
> +
> + cleanup:
> + if (vm)
> + virObjectUnlock(vm);
> + return ret;
> +}
> +
> +static int
> libxlDomainInterfaceStats(virDomainPtr dom,
> const char *path,
> virDomainInterfaceStatsPtr stats)
> @@ -5459,6 +5877,8 @@ static virHypervisorDriver libxlHypervisorDriver = {
> #endif
> .nodeGetFreeMemory = libxlNodeGetFreeMemory, /* 0.9.0 */
> .nodeGetCellsFreeMemory = libxlNodeGetCellsFreeMemory, /* 1.1.1 */
> + .domainBlockStats = libxlDomainBlockStats, /* 1.2.20 */
> + .domainBlockStatsFlags = libxlDomainBlockStatsFlags, /* 1.2.20 */
> .domainInterfaceStats = libxlDomainInterfaceStats, /* 1.2.20 */
> .domainMemoryStats = libxlDomainMemoryStats, /* 1.2.20 */
> .domainGetCPUStats = libxlDomainGetCPUStats, /* 1.2.20 */
>
------------------------------
Message: 5
Date: Wed, 23 Sep 2015 19:18:27 -0400
From: John Ferlan <jferlan at redhat.com>
To: libvir-list at redhat.com
Subject: [libvirt] [PATCH 0/6] Fix some Coverity issues
Message-ID: <1443050313-15412-1-git-send-email-jferlan at redhat.com>
Newer Coverity (7.7.0) found a couple real issues and a few more
false positives. There's still a few more to be resolved, but still
trying to figure them out...
libxlDomainMigrationPrepare - claim is args is leaked. Although
it seems to be handled in libxlMigrateReceive or libxlDoMigrateReceive.
Don't know the code well enough to do proper triage.
qemuProcessStop - claim is usage of net->ifname in the condition
(vport->virtPortType == VIR_NETDEV_VPORT_PROFILE_OPENVSWITCH)
is using a NULL net->ifname that would have been VIR_FREE()'d
when case VIR_DOMAIN_NET_TYPE_DIRECT a few lines above.
qemuDomainBlockRebase - claim is overwriting 'dest' after call to
qemuDomainBlockCopyCommon causes resource leak. Although reading
code says otherwise, except of course if CopyCommon goes to cleanup
rather than endjob. Even changing the location doesn't resolve
the issue.
Fix the Coverity tag for the DEADCODE... It's always a coin-flip either
dead_error_begin or dead_error_condition - I gave Jiri bad advice as
to which one to use it seems.
John Ferlan (6):
Avoid Coverity FORWARD_NULL prior to strtok_r calls
tests: Resolve Coverity RESOURCE_LEAK
tests: Resolve Coverity RESOURCE_LEAK
virsh: Resolve Coverity DEADCODE
qemu: Resolve Coverity CHECKED_RETURN
qemu: Resolve Coverity RESOURCE_LEAK
src/esx/esx_vi.c | 1 +
src/libxl/libxl_conf.c | 1 +
src/openvz/openvz_conf.c | 2 ++
src/qemu/qemu_driver.c | 24 +++++++++++-------------
src/qemu/qemu_process.c | 6 +++---
src/xenapi/xenapi_utils.c | 1 +
tests/qemucaps2xmltest.c | 1 +
tests/virnetdaemontest.c | 2 ++
tools/virsh.c | 2 +-
9 files changed, 23 insertions(+), 17 deletions(-)
--
2.1.0
------------------------------
--
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