The parameter value for cpuset could be in special format like
"0-10,^7", which is not recongnized by cgroup. This patch is to
ensure the cpuset is formated as expected before passing it to
cgroup. As a side effect, after the patch, it parses the cpuset
early before cgroup setting, to avoid the rollback if cpuset
parsing fails afterwards.
---
src/qemu/qemu_driver.c | 77 +++++++++++++++++++++++++----------------------
1 files changed, 41 insertions(+), 36 deletions(-)
diff --git a/src/qemu/qemu_driver.c b/src/qemu/qemu_driver.c
index 369e8ed..fc412a1 100644
--- a/src/qemu/qemu_driver.c
+++ b/src/qemu/qemu_driver.c
@@ -6952,8 +6952,23 @@ qemuDomainSetNumaParameters(virDomainPtr dom,
}
} else if (STREQ(param->field, VIR_DOMAIN_NUMA_NODESET)) {
int rc;
- bool savedmask;
- char oldnodemask[VIR_DOMAIN_CPUMASK_LEN];
+ char *nodeset = NULL;
+ char *nodeset_str = NULL;
+
+ if (VIR_ALLOC_N(nodeset, VIR_DOMAIN_CPUMASK_LEN) < 0) {
+ virReportOOMError();
+ ret = -1;
+ goto cleanup;
+ };
+
+ if (virDomainCpuSetParse(params[i].value.s,
+ 0, nodeset,
+ VIR_DOMAIN_CPUMASK_LEN) < 0) {
+ virReportError(VIR_ERR_INTERNAL_ERROR, "%s",
+ _("Failed to parse nodeset"));
+ ret = -1;
+ continue;
+ }
if (flags & VIR_DOMAIN_AFFECT_LIVE) {
if (vm->def->numatune.memory.mode !=
@@ -6961,72 +6976,62 @@ qemuDomainSetNumaParameters(virDomainPtr dom,
virReportError(VIR_ERR_OPERATION_INVALID, "%s",
_("change of nodeset for running domain "
"requires strict numa mode"));
+ VIR_FREE(nodeset);
ret = -1;
continue;
}
- rc = virCgroupSetCpusetMems(group, params[i].value.s);
- if (rc != 0) {
+
+ /* Ensure the cpuset string is formated before passing to cgroup */
+ if (!(nodeset_str = virDomainCpuSetFormat(nodeset,
+ VIR_DOMAIN_CPUMASK_LEN))) {
+ virReportError(VIR_ERR_INTERNAL_ERROR, "%s",
+ _("Failed to format nodeset"));
+ VIR_FREE(nodeset);
+ ret = -1;
+ continue;
+ }
+
+ if ((rc = virCgroupSetCpusetMems(group, nodeset_str) != 0)) {
virReportSystemError(-rc, "%s",
_("unable to set numa tunable"));
+ VIR_FREE(nodeset);
+ VIR_FREE(nodeset_str);
ret = -1;
continue;
}
+ VIR_FREE(nodeset_str);
/* update vm->def here so that dumpxml can read the new
* values from vm->def. */
- savedmask = false;
if (!vm->def->numatune.memory.nodemask) {
if (VIR_ALLOC_N(vm->def->numatune.memory.nodemask,
VIR_DOMAIN_CPUMASK_LEN) < 0) {
virReportOOMError();
+ VIR_FREE(nodeset);
ret = -1;
goto cleanup;
}
} else {
- memcpy(oldnodemask, vm->def->numatune.memory.nodemask,
- VIR_DOMAIN_CPUMASK_LEN);
- savedmask = true;
- }
- if (virDomainCpuSetParse(params[i].value.s,
- 0,
- vm->def->numatune.memory.nodemask,
- VIR_DOMAIN_CPUMASK_LEN) < 0) {
- if (savedmask)
- memcpy(vm->def->numatune.memory.nodemask,
- oldnodemask, VIR_DOMAIN_CPUMASK_LEN);
- else
- VIR_FREE(vm->def->numatune.memory.nodemask);
- ret = -1;
- continue;
+ VIR_FREE(vm->def->numatune.memory.nodemask);
}
+
+ vm->def->numatune.memory.nodemask = nodeset;
}
if (flags & VIR_DOMAIN_AFFECT_CONFIG) {
- savedmask = false;
if (!persistentDef->numatune.memory.nodemask) {
if (VIR_ALLOC_N(persistentDef->numatune.memory.nodemask,
VIR_DOMAIN_CPUMASK_LEN) < 0) {
virReportOOMError();
+ VIR_FREE(nodeset);
ret = -1;
goto cleanup;
}
} else {
- memcpy(oldnodemask, persistentDef->numatune.memory.nodemask,
- VIR_DOMAIN_CPUMASK_LEN);
- savedmask = true;
- }
- if (virDomainCpuSetParse(params[i].value.s,
- 0,
- persistentDef->numatune.memory.nodemask,
- VIR_DOMAIN_CPUMASK_LEN) < 0) {
- if (savedmask)
- memcpy(persistentDef->numatune.memory.nodemask,
- oldnodemask, VIR_DOMAIN_CPUMASK_LEN);
- else
- VIR_FREE(persistentDef->numatune.memory.nodemask);
- ret = -1;
- continue;
+ VIR_FREE(persistentDef->numatune.memory.nodemask);
}
+
+ persistentDef->numatune.memory.nodemask = nodeset;
}
}
}
--
1.7.7.3
--
libvir-list mailing list
libvir-list@xxxxxxxxxx
https://www.redhat.com/mailman/listinfo/libvir-list