File libxl-set-migration-constraints.patch of Package libvirt.9813
From 6409e928eb4c2287dca59b139650fab77ea99fb8 Mon Sep 17 00:00:00 2001
From: Olaf Hering <olaf@aepfle.de>
Date: Fri, 9 May 2014 11:55:31 -0600
Subject: [PATCH] libvirt: set migration constraints from cmdline
References: fate#316614
Signed-off-by: Olaf Hering <olaf@aepfle.de>
Signed-off-by: Jim Fehlig <jfehlig@suse.com>
---
include/libvirt/libvirt-domain.h | 25 +++++++++++++++++++++++++
src/libxl/libxl_driver.c | 17 ++++++++++++++++-
src/libxl/libxl_migration.c | 29 +++++++++++++++++++++++++----
src/libxl/libxl_migration.h | 14 +++++++++++++-
tools/virsh-domain.c | 38 ++++++++++++++++++++++++++++++++++++++
tools/virsh.pod | 8 ++++++++
6 files changed, 125 insertions(+), 6 deletions(-)
Index: libvirt-4.0.0/include/libvirt/libvirt-domain.h
===================================================================
--- libvirt-4.0.0.orig/include/libvirt/libvirt-domain.h
+++ libvirt-4.0.0/include/libvirt/libvirt-domain.h
@@ -1008,6 +1008,31 @@ typedef enum {
*/
# define VIR_MIGRATE_PARAM_AUTO_CONVERGE_INCREMENT "auto_converge.increment"
+/**
+ * VIR_MIGRATE_PARAM_SUSE_MAX_ITERS:
+ *
+ * virDomainMigrate* params field: xc_domain_save max_iters
+ */
+#define VIR_MIGRATE_PARAM_SUSE_MAX_ITERS "max_iters"
+/**
+ * VIR_MIGRATE_PARAM_SUSE_MAX_FACTOR:
+ *
+ * virDomainMigrate* params field: xc_domain_save max_factor
+ */
+#define VIR_MIGRATE_PARAM_SUSE_MAX_FACTOR "max_factor"
+/**
+ * VIR_MIGRATE_PARAM_SUSE_MIN_REMAINING:
+ *
+ * virDomainMigrate* params field: xc_domain_save min_remaining
+ */
+#define VIR_MIGRATE_PARAM_SUSE_MIN_REMAINING "min_remaining"
+/**
+ * VIR_MIGRATE_PARAM_SUSE_ABORT_IF_BUSY:
+ *
+ * virDomainMigrate* params field: xc_domain_save abort_if_busy
+ */
+#define VIR_MIGRATE_PARAM_SUSE_ABORT_IF_BUSY "abort_if_busy"
+
/* Domain migration. */
virDomainPtr virDomainMigrate (virDomainPtr domain, virConnectPtr dconn,
unsigned long flags, const char *dname,
Index: libvirt-4.0.0/src/libxl/libxl_driver.c
===================================================================
--- libvirt-4.0.0.orig/src/libxl/libxl_driver.c
+++ libvirt-4.0.0/src/libxl/libxl_driver.c
@@ -6081,6 +6081,9 @@ libxlDomainMigratePerform3Params(virDoma
const char *dname = NULL;
const char *uri = NULL;
int ret = -1;
+ libxlDomainMigrationProps props = {
+ .virFlags = flags,
+ };
#ifdef LIBXL_HAVE_NO_SUSPEND_RESUME
virReportUnsupportedError();
@@ -6097,6 +6100,18 @@ libxlDomainMigratePerform3Params(virDoma
virTypedParamsGetString(params, nparams,
VIR_MIGRATE_PARAM_DEST_NAME,
&dname) < 0 ||
+ virTypedParamsGetUInt(params, nparams,
+ VIR_MIGRATE_PARAM_SUSE_MAX_ITERS,
+ &props.max_iters) < 0 ||
+ virTypedParamsGetUInt(params, nparams,
+ VIR_MIGRATE_PARAM_SUSE_MAX_FACTOR,
+ &props.max_factor) < 0 ||
+ virTypedParamsGetUInt(params, nparams,
+ VIR_MIGRATE_PARAM_SUSE_MIN_REMAINING,
+ &props.min_remaining) < 0 ||
+ virTypedParamsGetUInt(params, nparams,
+ VIR_MIGRATE_PARAM_SUSE_ABORT_IF_BUSY,
+ &props.abort_if_busy) < 0 ||
virTypedParamsGetString(params, nparams,
VIR_MIGRATE_PARAM_URI,
&uri) < 0)
@@ -6111,11 +6126,11 @@ libxlDomainMigratePerform3Params(virDoma
if ((flags & (VIR_MIGRATE_TUNNELLED | VIR_MIGRATE_PEER2PEER))) {
if (libxlDomainMigrationPerformP2P(driver, vm, dom->conn, dom_xml,
- dconnuri, uri, dname, flags) < 0)
+ dconnuri, uri, dname, &props) < 0)
goto cleanup;
} else {
if (libxlDomainMigrationPerform(driver, vm, dom_xml, dconnuri,
- uri, dname, flags) < 0)
+ uri, dname, &props) < 0)
goto cleanup;
}
Index: libvirt-4.0.0/src/libxl/libxl_migration.c
===================================================================
--- libvirt-4.0.0.orig/src/libxl/libxl_migration.c
+++ libvirt-4.0.0/src/libxl/libxl_migration.c
@@ -347,18 +347,39 @@ libxlMigrateReceive(virNetSocketPtr sock
static int
libxlDoMigrateSend(libxlDriverPrivatePtr driver,
virDomainObjPtr vm,
- unsigned long flags,
+ const libxlDomainMigrationProps *props,
int sockfd)
{
libxlDriverConfigPtr cfg = libxlDriverConfigGet(driver);
+#ifdef LIBXL_HAVE_DOMAIN_SUSPEND_SUSE
+ libxl_domain_suspend_suse_properties libxl_props = {
+ .flags = 0,
+ };
+#else
int xl_flags = 0;
+#endif
int ret;
- if (flags & VIR_MIGRATE_LIVE)
+#ifdef LIBXL_HAVE_DOMAIN_SUSPEND_SUSE
+ if (props->virFlags & VIR_MIGRATE_LIVE)
+ libxl_props.flags |= LIBXL_SUSPEND_LIVE;
+
+ libxl_props.max_iters = props->max_iters;
+ libxl_props.max_factor = props->max_factor;
+ libxl_props.min_remaining = props->min_remaining;
+ if (props->abort_if_busy)
+ libxl_props.flags |= LIBXL_SUSPEND_ABORT_IF_BUSY;
+
+ ret = libxl_domain_suspend_suse(cfg->ctx, vm->def->id, sockfd,
+ &libxl_props, NULL);
+#else
+ if (props->virFlags & VIR_MIGRATE_LIVE)
xl_flags = LIBXL_SUSPEND_LIVE;
ret = libxl_domain_suspend(cfg->ctx, vm->def->id, sockfd,
xl_flags, NULL);
+#endif
+
if (ret != 0) {
virReportError(VIR_ERR_INTERNAL_ERROR, "%s",
_("Failed to send migration data to destination host"));
@@ -928,7 +949,7 @@ struct libxlTunnelControl {
static int
libxlMigrationStartTunnel(libxlDriverPrivatePtr driver,
virDomainObjPtr vm,
- unsigned long flags,
+ const libxlDomainMigrationProps *props,
virStreamPtr st,
struct libxlTunnelControl **tnl)
{
@@ -961,7 +982,7 @@ libxlMigrationStartTunnel(libxlDriverPri
virObjectUnlock(vm);
/* Send data to pipe */
- ret = libxlDoMigrateSend(driver, vm, flags, tc->dataFD[1]);
+ ret = libxlDoMigrateSend(driver, vm, props, tc->dataFD[1]);
virObjectLock(vm);
out:
@@ -996,7 +1017,7 @@ libxlDoMigrateP2P(libxlDriverPrivatePtr
const char *dconnuri ATTRIBUTE_UNUSED,
const char *dname,
const char *uri,
- unsigned int flags)
+ const libxlDomainMigrationProps *props)
{
virDomainPtr ddomain = NULL;
virTypedParameterPtr params = NULL;
@@ -1041,11 +1062,11 @@ libxlDoMigrateP2P(libxlDriverPrivatePtr
/* We don't require the destination to have P2P support
* as it looks to be normal migration from the receiver perpective.
*/
- destflags = flags & ~(VIR_MIGRATE_PEER2PEER);
+ destflags = props->virFlags & ~(VIR_MIGRATE_PEER2PEER);
VIR_DEBUG("Prepare3");
virObjectUnlock(vm);
- if (flags & VIR_MIGRATE_TUNNELLED) {
+ if (props->virFlags & VIR_MIGRATE_TUNNELLED) {
if (!(st = virStreamNew(dconn, 0)))
goto confirm;
ret = dconn->driver->domainMigratePrepareTunnel3Params
@@ -1059,7 +1080,7 @@ libxlDoMigrateP2P(libxlDriverPrivatePtr
if (ret == -1)
goto confirm;
- if (!(flags & VIR_MIGRATE_TUNNELLED)) {
+ if (!(props->virFlags & VIR_MIGRATE_TUNNELLED)) {
if (uri_out) {
if (virTypedParamsReplaceString(¶ms, &nparams,
VIR_MIGRATE_PARAM_URI, uri_out) < 0) {
@@ -1074,11 +1095,11 @@ libxlDoMigrateP2P(libxlDriverPrivatePtr
}
VIR_DEBUG("Perform3 uri=%s", NULLSTR(uri_out));
- if (flags & VIR_MIGRATE_TUNNELLED)
- ret = libxlMigrationStartTunnel(driver, vm, flags, st, &tc);
+ if (props->virFlags & VIR_MIGRATE_TUNNELLED)
+ ret = libxlMigrationStartTunnel(driver, vm, props, st, &tc);
else
ret = libxlDomainMigrationPerform(driver, vm, NULL, NULL,
- uri_out, NULL, flags);
+ uri_out, NULL, props);
if (ret < 0) {
notify_source = false;
orig_err = virSaveLastError();
@@ -1113,7 +1134,7 @@ libxlDoMigrateP2P(libxlDriverPrivatePtr
confirm:
if (notify_source) {
VIR_DEBUG("Confirm3 cancelled=%d vm=%p", cancelled, vm);
- ret = libxlDomainMigrationConfirm(driver, vm, flags, cancelled);
+ ret = libxlDomainMigrationConfirm(driver, vm, props->virFlags, cancelled);
if (ret < 0)
VIR_WARN("Guest %s probably left in 'paused' state on source",
@@ -1121,7 +1142,7 @@ libxlDoMigrateP2P(libxlDriverPrivatePtr
}
cleanup:
- if (flags & VIR_MIGRATE_TUNNELLED) {
+ if (props->virFlags & VIR_MIGRATE_TUNNELLED) {
libxlMigrationStopTunnel(tc);
virObjectUnref(st);
}
@@ -1168,7 +1189,7 @@ libxlDomainMigrationPerformP2P(libxlDriv
const char *dconnuri,
const char *uri_str ATTRIBUTE_UNUSED,
const char *dname,
- unsigned int flags)
+ const libxlDomainMigrationProps *props)
{
int ret = -1;
bool useParams;
@@ -1203,7 +1224,7 @@ libxlDomainMigrationPerformP2P(libxlDriv
}
ret = libxlDoMigrateP2P(driver, vm, sconn, xmlin, dconn, dconnuri,
- dname, uri_str, flags);
+ dname, uri_str, props);
if (ret < 0) {
/*
@@ -1233,7 +1254,7 @@ libxlDomainMigrationPerform(libxlDriverP
const char *dconnuri ATTRIBUTE_UNUSED,
const char *uri_str,
const char *dname ATTRIBUTE_UNUSED,
- unsigned int flags)
+ const libxlDomainMigrationProps *props)
{
libxlDomainObjPrivatePtr priv = vm->privateData;
char *hostname = NULL;
@@ -1273,7 +1294,7 @@ libxlDomainMigrationPerform(libxlDriverP
/* suspend vm and send saved data to dst through socket fd */
virObjectUnlock(vm);
- ret = libxlDoMigrateSend(driver, vm, flags, sockfd);
+ ret = libxlDoMigrateSend(driver, vm, props, sockfd);
virObjectLock(vm);
if (ret < 0) {
Index: libvirt-4.0.0/src/libxl/libxl_migration.h
===================================================================
--- libvirt-4.0.0.orig/src/libxl/libxl_migration.h
+++ libvirt-4.0.0/src/libxl/libxl_migration.h
@@ -39,6 +39,10 @@
VIR_MIGRATE_PARAM_URI, VIR_TYPED_PARAM_STRING, \
VIR_MIGRATE_PARAM_DEST_NAME, VIR_TYPED_PARAM_STRING, \
VIR_MIGRATE_PARAM_DEST_XML, VIR_TYPED_PARAM_STRING, \
+ VIR_MIGRATE_PARAM_SUSE_MAX_ITERS, VIR_TYPED_PARAM_UINT, \
+ VIR_MIGRATE_PARAM_SUSE_MAX_FACTOR, VIR_TYPED_PARAM_UINT, \
+ VIR_MIGRATE_PARAM_SUSE_MIN_REMAINING, VIR_TYPED_PARAM_UINT, \
+ VIR_MIGRATE_PARAM_SUSE_ABORT_IF_BUSY, VIR_TYPED_PARAM_UINT, \
NULL
char *
@@ -70,6 +74,14 @@ libxlDomainMigrationPrepare(virConnectPt
int cookieinlen,
unsigned int flags);
+typedef struct {
+ unsigned int virFlags;
+ unsigned int max_iters;
+ unsigned int max_factor;
+ unsigned int min_remaining;
+ unsigned int abort_if_busy;
+} libxlDomainMigrationProps;
+
int
libxlDomainMigrationPerformP2P(libxlDriverPrivatePtr driver,
virDomainObjPtr vm,
@@ -78,7 +90,7 @@ libxlDomainMigrationPerformP2P(libxlDriv
const char *dconnuri,
const char *uri_str,
const char *dname,
- unsigned int flags);
+ const libxlDomainMigrationProps *props);
int
libxlDomainMigrationPerform(libxlDriverPrivatePtr driver,
@@ -87,7 +99,7 @@ libxlDomainMigrationPerform(libxlDriverP
const char *dconnuri,
const char *uri_str,
const char *dname,
- unsigned int flags);
+ const libxlDomainMigrationProps *props);
virDomainPtr
libxlDomainMigrationFinish(virConnectPtr dconn,
Index: libvirt-4.0.0/tools/virsh-domain.c
===================================================================
--- libvirt-4.0.0.orig/tools/virsh-domain.c
+++ libvirt-4.0.0/tools/virsh-domain.c
@@ -10540,6 +10540,22 @@ static const vshCmdOptDef opts_migrate[]
.type = VSH_OT_BOOL,
.help = N_("use TLS for migration")
},
+ {.name = "max_iters",
+ .type = VSH_OT_INT,
+ .help = N_("SUSE libxl: Number of iterations before final suspend (default: 30).")
+ },
+ {.name = "max_factor",
+ .type = VSH_OT_INT,
+ .help = N_("SUSE libxl: Max amount of memory to transfer before final suspend (default: 3*RAM).")
+ },
+ {.name = "min_remaining",
+ .type = VSH_OT_INT,
+ .help = N_("SUSE libxl: Number of dirty pages before final suspend (default: 50).")
+ },
+ {.name = "abort_if_busy",
+ .type = VSH_OT_BOOL,
+ .help = N_("SUSE libxl: Abort migration instead of doing final suspend.")
+ },
{.name = NULL}
};
@@ -10563,6 +10579,7 @@ doMigrate(void *opaque)
unsigned long long ullOpt = 0;
int rv;
virConnectPtr dconn = data->dconn;
+ unsigned int uint_opt = 0;
sigemptyset(&sigmask);
sigaddset(&sigmask, SIGINT);
@@ -10682,6 +10699,27 @@ doMigrate(void *opaque)
goto save_error;
}
+ if (vshCommandOptUInt(ctl, cmd, "max_iters", &uint_opt) > 0 && uint_opt) {
+ if (virTypedParamsAddUInt(¶ms, &nparams, &maxparams,
+ VIR_MIGRATE_PARAM_SUSE_MAX_ITERS, uint_opt) < 0)
+ goto save_error;
+ }
+ if (vshCommandOptUInt(ctl, cmd, "max_factor", &uint_opt) > 0 && uint_opt) {
+ if (virTypedParamsAddUInt(¶ms, &nparams, &maxparams,
+ VIR_MIGRATE_PARAM_SUSE_MAX_FACTOR, uint_opt) < 0)
+ goto save_error;
+ }
+ if (vshCommandOptUInt(ctl, cmd, "min_remaining", &uint_opt) > 0 && uint_opt) {
+ if (virTypedParamsAddUInt(¶ms, &nparams, &maxparams,
+ VIR_MIGRATE_PARAM_SUSE_MIN_REMAINING, uint_opt) < 0)
+ goto save_error;
+ }
+ if (vshCommandOptBool(cmd, "abort_if_busy")) {
+ if (virTypedParamsAddUInt(¶ms, &nparams, &maxparams,
+ VIR_MIGRATE_PARAM_SUSE_ABORT_IF_BUSY, 1) < 0)
+ goto save_error;
+ }
+
if (vshCommandOptStringReq(ctl, cmd, "xml", &opt) < 0)
goto out;
if (opt) {
Index: libvirt-4.0.0/tools/virsh.pod
===================================================================
--- libvirt-4.0.0.orig/tools/virsh.pod
+++ libvirt-4.0.0/tools/virsh.pod
@@ -1849,6 +1849,14 @@ Providing I<--tls> causes the migration
the migration of the domain. Usage requires proper TLS setup for both source
and target.
+SUSE-specific options for Xen: I<--max_iters> B<num> allows specifying the maximum
+number of iterations before final suspend. Default is 30. I<--max_factor> B<num>
+allows specifying the maximum amount of memory to transfer before final suspend.
+Default is (3*VM memory size). I<--min_remaining> B<num> allows specifying the
+number of dirty pages before final suspend. Default is 50. I<--abort_if_busy>
+can be used to abort the migration instead of doing the final suspend for VMs with
+busy workloads.
+
Running migration can be canceled by interrupting virsh (usually using
C<Ctrl-C>) or by B<domjobabort> command sent from another virsh instance.
