[libvirt] [PATCH v2] virsh: freecell --all getting wrong NUMA nodes count
Jiri Denemark
jdenemar at redhat.com
Fri Feb 18 07:57:17 UTC 2011
> diff --git a/src/nodeinfo.c b/src/nodeinfo.c
> index 22d53e5..ba2f793 100644
> --- a/src/nodeinfo.c
> +++ b/src/nodeinfo.c
> @@ -468,7 +468,8 @@ nodeGetCellsFreeMemory(virConnectPtr conn ATTRIBUTE_UNUSED,
> long long mem;
> if (numa_node_size64(n, &mem) < 0) {
> nodeReportError(VIR_ERR_INTERNAL_ERROR,
> - "%s", _("Failed to query NUMA free memory"));
> + "%s: %d", _("Failed to query NUMA free memory "
> + "for node"), n);
This is hard to translate and it doesn't work well if the number needs to be
somewhere else than at the end in some language. It should rather look like
_("Failed to query NUMA free memory for node: %d"), n
> goto cleanup;
> }
> freeMems[numCells++] = mem;
> diff --git a/tools/virsh.c b/tools/virsh.c
> index 50d5e33..165a791 100644
> --- a/tools/virsh.c
> +++ b/tools/virsh.c
> @@ -2301,32 +2307,60 @@ cmdFreecell(vshControl *ctl, const vshCmd *cmd)
> }
>
> if (all_given) {
> - if (virNodeGetInfo(ctl->conn, &info) < 0) {
> - vshError(ctl, "%s", _("failed to get NUMA nodes count"));
> + cap_xml = virConnectGetCapabilities(ctl->conn);
> + if (!cap_xml) {
> + vshError(ctl, "%s", _("unable to get node capabilities"));
> goto cleanup;
> }
>
> - if (!info.nodes) {
> - vshError(ctl, "%s", _("no NUMA nodes present"));
> + xml = xmlReadDoc((const xmlChar *) cap_xml, "node.xml", NULL,
> + XML_PARSE_NOENT | XML_PARSE_NONET |
Space at the end of the line above.
> + XML_PARSE_NOWARNING);
> +
> + if (!xml) {
> + vshError(ctl, "%s", _("unable to get node capabilities"));
> goto cleanup;
> }
>
> - if (VIR_ALLOC_N(nodes, info.nodes) < 0) {
> - vshError(ctl, "%s", _("could not allocate memory"));
> + ctxt = xmlXPathNewContext(xml);
> + nodes_cnt = virXPathNodeSet("/capabilities/host/topology/cells/cell",
> + ctxt, &nodes);
> +
> + if (nodes_cnt == -1) {
> + vshError(ctl, "%s", _("could not get information about "
> + "NUMA topology"));
> goto cleanup;
> }
>
> - ret = virNodeGetCellsFreeMemory(ctl->conn, nodes, 0, info.nodes);
> - if (ret != info.nodes) {
> - vshError(ctl, "%s", _("could not get information about "
> - "all NUMA nodes"));
> + if ((VIR_ALLOC_N(nodes_free, nodes_cnt) < 0) ||
> + (VIR_ALLOC_N(nodes_id, nodes_cnt) < 0)){
> + vshError(ctl, "%s", _("could not allocate memory"));
> goto cleanup;
> }
You can use vshCalloc, which already prints an error and fails. Yeah, virsh
code is a mess and doesn't really fit in general libvirt coding standards. But
that's a different story.
>
> + for (i = 0; i < nodes_cnt; i++) {
> + unsigned long id;
> + char *val = virXMLPropString(nodes[i], "id");
> + char *conv = NULL;
> + id = strtoul(val, &conv, 10);
> + if (*conv !='\0') {
> + vshError(ctl, "%s", _("conversion from string failed"));
> + goto cleanup;
> + }
Apart from the funky indentation, you can use virStrToLong_ul() to do the job.
Also val is leaked here, you should free it just after converting it to
integer.
> + nodes_id[i]=id;
> + ret = virNodeGetCellsFreeMemory(ctl->conn, &(nodes_free[i]), id, 1);
> + if (ret != 1) {
> + vshError(ctl, "%s %lu", _("failed to get free memory for "
> + "NUMA node nuber:"), id);
Move %lu inside the translatable string here as well.
> + goto cleanup;
> + }
> + }
> +
> memory = 0;
> - for (cell = 0; cell < info.nodes; cell++) {
> - vshPrint(ctl, "%5d: %10llu kB\n", cell, (nodes[cell]/1024));
> - memory += nodes[cell];
> + for (cell = 0; cell < nodes_cnt; cell++) {
> + vshPrint(ctl, "%5lu: %10llu kB\n", nodes_id[cell],
> + (nodes_free[cell]/1024));
> + memory += nodes_free[cell];
> }
>
> vshPrintExtra(ctl, "--------------------\n");
Otherwise it looks good.
Jirka
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