[PATCH v6 7/8] virsh: Add mode option to domdirtyrate-calc virsh api
huangy81 at chinatelecom.cn
huangy81 at chinatelecom.cn
Sun Feb 20 13:28:14 UTC 2022
From: Hyman Huang(黄勇) <huangy81 at chinatelecom.cn>
Extend domdirtyrate-calc virsh api with mode option, either
of these three options "page-sampling,dirty-bitmap,dirty-ring"
can be specified when calculating dirty page rate.
Signed-off-by: Hyman Huang(黄勇) <huangy81 at chinatelecom.cn>
---
docs/manpages/virsh.rst | 7 +++++--
src/libvirt-domain.c | 12 +++++++++++-
tools/virsh-completer-domain.c | 17 +++++++++++++++++
tools/virsh-completer-domain.h | 4 ++++
tools/virsh-domain.c | 42 +++++++++++++++++++++++++++++++++++++++++-
tools/virsh-domain.h | 9 +++++++++
6 files changed, 87 insertions(+), 4 deletions(-)
diff --git a/docs/manpages/virsh.rst b/docs/manpages/virsh.rst
index 429879d..00d21a1 100644
--- a/docs/manpages/virsh.rst
+++ b/docs/manpages/virsh.rst
@@ -1717,13 +1717,16 @@ domdirtyrate-calc
::
domdirtyrate-calc <domain> [--seconds <sec>]
+ --mode=[page-sampling | dirty-bitmap | dirty-ring]
Calculate an active domain's memory dirty rate which may be expected by
user in order to decide whether it's proper to be migrated out or not.
The ``seconds`` parameter can be used to calculate dirty rate in a
specific time which allows 60s at most now and would be default to 1s
-if missing. The calculated dirty rate information is available by calling
-'domstats --dirtyrate'.
+if missing. These three *page-sampling, dirty-bitmap, dirty-ring* modes
+are mutually exclusive and alternative when specify calculation mode,
+*page-sampling* is the default mode if missing. The calculated dirty
+rate information is available by calling 'domstats --dirtyrate'.
domdisplay
diff --git a/src/libvirt-domain.c b/src/libvirt-domain.c
index 8be2c21..7be4e02 100644
--- a/src/libvirt-domain.c
+++ b/src/libvirt-domain.c
@@ -13337,7 +13337,7 @@ virDomainGetMessages(virDomainPtr domain,
* virDomainStartDirtyRateCalc:
* @domain: a domain object
* @seconds: specified calculating time in seconds
- * @flags: extra flags; not used yet, so callers should always pass 0
+ * @flags: bitwise-OR of supported virDomainDirtyRateCalcFlags
*
* Calculate the current domain's memory dirty rate in next @seconds.
* The calculated dirty rate information is available by calling
@@ -13361,6 +13361,16 @@ virDomainStartDirtyRateCalc(virDomainPtr domain,
virCheckReadOnlyGoto(conn->flags, error);
+ VIR_EXCLUSIVE_FLAGS_GOTO(VIR_DOMAIN_DIRTYRATE_MODE_PAGE_SAMPLING,
+ VIR_DOMAIN_DIRTYRATE_MODE_DIRTY_BITMAP,
+ error);
+ VIR_EXCLUSIVE_FLAGS_GOTO(VIR_DOMAIN_DIRTYRATE_MODE_PAGE_SAMPLING,
+ VIR_DOMAIN_DIRTYRATE_MODE_DIRTY_RING,
+ error);
+ VIR_EXCLUSIVE_FLAGS_GOTO(VIR_DOMAIN_DIRTYRATE_MODE_DIRTY_BITMAP,
+ VIR_DOMAIN_DIRTYRATE_MODE_DIRTY_RING,
+ error);
+
if (conn->driver->domainStartDirtyRateCalc) {
int ret;
ret = conn->driver->domainStartDirtyRateCalc(domain, seconds, flags);
diff --git a/tools/virsh-completer-domain.c b/tools/virsh-completer-domain.c
index b4e744c..1c2df56 100644
--- a/tools/virsh-completer-domain.c
+++ b/tools/virsh-completer-domain.c
@@ -1150,3 +1150,20 @@ virshDomainNumatuneModeCompleter(vshControl *ctl G_GNUC_UNUSED,
return ret;
}
+
+
+char **
+virshDomainDirtyRateCalcModeCompleter(vshControl *ctl,
+ const vshCmd *cmd,
+ unsigned int flags)
+{
+ const char *modes[] = {"page-sampling", "dirty-bitmap", "dirty-ring", NULL};
+ const char *mode = NULL;
+
+ virCheckFlags(0, NULL);
+
+ if (vshCommandOptStringQuiet(ctl, cmd, "mode", &mode) < 0)
+ return NULL;
+
+ return virshCommaStringListComplete(mode, modes);
+}
diff --git a/tools/virsh-completer-domain.h b/tools/virsh-completer-domain.h
index 94bb3b5..044c675 100644
--- a/tools/virsh-completer-domain.h
+++ b/tools/virsh-completer-domain.h
@@ -186,3 +186,7 @@ char **
virshDomainNumatuneModeCompleter(vshControl *ctl,
const vshCmd *cmd,
unsigned int flags);
+char **
+virshDomainDirtyRateCalcModeCompleter(vshControl *ctl,
+ const vshCmd *cmd,
+ unsigned int flags);
diff --git a/tools/virsh-domain.c b/tools/virsh-domain.c
index 433ea67..256258b 100644
--- a/tools/virsh-domain.c
+++ b/tools/virsh-domain.c
@@ -14486,14 +14486,28 @@ static const vshCmdOptDef opts_domdirtyrate_calc[] = {
.help = N_("calculate memory dirty rate within specified seconds, "
"the supported value range from 1 to 60, default to 1.")
},
+ {.name = "mode",
+ .type = VSH_OT_STRING,
+ .completer = virshDomainDirtyRateCalcModeCompleter,
+ .help = N_("dirty page rate calculation mode, either of these 3 options "
+ "'page-sampling,dirty-bitmap,dirty-ring' can be specified.")
+ },
{.name = NULL}
};
+VIR_ENUM_IMPL(virshDomainDirtyRateCalcMode,
+ VIRSH_DOMAIN_DIRTYRATE_CALC_MODE_LAST,
+ "page-sampling",
+ "dirty-bitmap",
+ "dirty-ring");
+
static bool
cmdDomDirtyRateCalc(vshControl *ctl, const vshCmd *cmd)
{
g_autoptr(virshDomain) dom = NULL;
int seconds = 1; /* the default value is 1 */
+ const char *modestr = NULL;
+ unsigned int flags = 0;
if (!(dom = virshCommandOptDomain(ctl, cmd, NULL)))
return false;
@@ -14501,7 +14515,33 @@ cmdDomDirtyRateCalc(vshControl *ctl, const vshCmd *cmd)
if (vshCommandOptInt(ctl, cmd, "seconds", &seconds) < 0)
return false;
- if (virDomainStartDirtyRateCalc(dom, seconds, 0) < 0)
+ if (vshCommandOptStringReq(ctl, cmd, "mode", &modestr) < 0)
+ return false;
+
+ if (modestr) {
+ int mode = virshDomainDirtyRateCalcModeTypeFromString(modestr);
+
+ if (mode < 0) {
+ vshError(ctl, _("Unknown calculation mode '%s'"), modestr);
+ return false;
+ }
+
+ switch ((virshDomainDirtyRateCalcMode) mode) {
+ case VIRSH_DOMAIN_DIRTYRATE_CALC_MODE_PAGE_SAMPLING:
+ flags |= VIR_DOMAIN_DIRTYRATE_MODE_PAGE_SAMPLING;
+ break;
+ case VIRSH_DOMAIN_DIRTYRATE_CALC_MODE_DIRTY_BITMAP:
+ flags |= VIR_DOMAIN_DIRTYRATE_MODE_DIRTY_BITMAP;;
+ break;
+ case VIRSH_DOMAIN_DIRTYRATE_CALC_MODE_DIRTY_RING:
+ flags |= VIR_DOMAIN_DIRTYRATE_MODE_DIRTY_RING;;
+ break;
+ case VIRSH_DOMAIN_DIRTYRATE_CALC_MODE_LAST:
+ break;
+ }
+ }
+
+ if (virDomainStartDirtyRateCalc(dom, seconds, flags) < 0)
return false;
vshPrintExtra(ctl, _("Start to calculate domain's memory "
diff --git a/tools/virsh-domain.h b/tools/virsh-domain.h
index cf5ce28..6a94438 100644
--- a/tools/virsh-domain.h
+++ b/tools/virsh-domain.h
@@ -46,6 +46,15 @@ typedef enum {
VIR_ENUM_DECL(virshDomainInterfaceSourceMode);
+typedef enum {
+ VIRSH_DOMAIN_DIRTYRATE_CALC_MODE_PAGE_SAMPLING,
+ VIRSH_DOMAIN_DIRTYRATE_CALC_MODE_DIRTY_BITMAP,
+ VIRSH_DOMAIN_DIRTYRATE_CALC_MODE_DIRTY_RING,
+ VIRSH_DOMAIN_DIRTYRATE_CALC_MODE_LAST,
+} virshDomainDirtyRateCalcMode;
+
+VIR_ENUM_DECL(virshDomainDirtyRateCalcMode);
+
extern const vshCmdDef domManagementCmds[];
VIR_ENUM_DECL(virshDomainProcessSignal);
--
1.8.3.1
More information about the libvir-list
mailing list