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Re: [libvirt] [PATCH 5/6] Implemet lxcDomainBlockStats for lxc driver



On 01/15/2014 07:23 AM, Thorsten Behrens wrote:
> ---
>  src/lxc/lxc_driver.c | 51 +++++++++++++++++++++++++++++++++++++++++++++++++++
>  1 file changed, 51 insertions(+)
> 
> diff --git a/src/lxc/lxc_driver.c b/src/lxc/lxc_driver.c
> index 1e9c77a..1d2a457 100644
> --- a/src/lxc/lxc_driver.c
> +++ b/src/lxc/lxc_driver.c
> @@ -2021,6 +2021,56 @@ lxcDomainGetSchedulerParameters(virDomainPtr domain,
>  
>  
>  static int
> +lxcDomainBlockStats(virDomainPtr dom,
> +                    const char *path,
> +                    struct _virDomainBlockStats *stats)
> +{
> +    int ret = -1, idx;
> +    virDomainObjPtr vm;
> +    virDomainDiskDefPtr disk = NULL;
> +    virLXCDomainObjPrivatePtr priv;
> +
> +    if (!(vm = lxcDomObjFromDomain(dom)))
> +        return ret;
> +
> +    priv = vm->privateData;
> +
> +    if (virDomainBlockStatsEnsureACL(dom->conn, vm->def) < 0)
> +        goto cleanup;
> +
> +    if (!virDomainObjIsActive(vm)) {
> +        virReportError(VIR_ERR_OPERATION_INVALID,
> +                       "%s", _("domain is not running"));
> +        goto cleanup;
> +    }
> +
> +    if ((idx = virDomainDiskIndexByName(vm->def, path, false)) < 0) {
> +        virReportError(VIR_ERR_INVALID_ARG,
> +                       _("invalid path: %s"), path);
> +        goto cleanup;
> +    }
> +    disk = vm->def->disks[idx];
> +
> +    if (!disk->info.alias) {
> +        virReportError(VIR_ERR_INTERNAL_ERROR,
> +                       _("missing disk device alias name for %s"), disk->dst);
> +        goto cleanup;
> +    }
> +
> +    ret = virCgroupGetBlkioIoDeviceServiced(priv->cgroup,
> +                                            disk->info.alias,
> +                                            &stats->rd_bytes,
> +                                            &stats->wr_bytes,
> +                                            &stats->rd_req,
> +                                            &stats->wr_req);
> +cleanup:
> +    if (vm)
> +        virObjectUnlock(vm);
> +    return ret;
> +}
> +
> +
> +static int
>  lxcDomainSetBlkioParameters(virDomainPtr dom,
>                              virTypedParameterPtr params,
>                              int nparams,
> @@ -4962,6 +5012,7 @@ static virDriver lxcDriver = {
>      .domainGetSchedulerParametersFlags = lxcDomainGetSchedulerParametersFlags, /* 0.9.2 */
>      .domainSetSchedulerParameters = lxcDomainSetSchedulerParameters, /* 0.5.0 */
>      .domainSetSchedulerParametersFlags = lxcDomainSetSchedulerParametersFlags, /* 0.9.2 */
> +    .domainBlockStats = lxcDomainBlockStats, /* 0.4.1 */

Just one question.
Can't we implement the new API domainBlockStatsFlags?


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