On 08/15/2012 09:35 PM, Osier Yang wrote: > The parameter value for cpuset could be in special format like > "0-10,^7", which is not recongnized by cgroup. This patch is to
s/recongnized/recognized/
> ensure the cpuset is formated as expected before passing it to
s/formated/formatted/
> 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;
> + }
We have enough of this open-coded conversions in the code base that it
would be worth common helper routines to make the conversion much easier
to use in the clients (for a later patch). But for the purposes of
fixing the bug at hand, your patch does the trick.
>
> 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 */
s/formated/formatted/
ACK with nits fixed.
--
Eric Blake ebl...@redhat.com +1-919-301-3266
Libvirt virtualization library http://libvirt.org
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