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virsh: Adding blkiotune command to virsh tool

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Adding blkiotune command to virsh tool

Signed-off-by: Gui Jianfeng <guijianfeng@cn.fujitsu.com>
This commit is contained in:
Gui Jianfeng 2011-02-22 13:33:24 +08:00 committed by Eric Blake
parent f84a756eca
commit 17e7556dcf
2 changed files with 136 additions and 0 deletions
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131
tools/virsh.c
View File

@ -3035,6 +3035,136 @@ cmdSetmaxmem(vshControl *ctl, const vshCmd *cmd)
return ret;
}
/*
* "blkiotune" command
*/
static const vshCmdInfo info_blkiotune[] = {
{"help", N_("Get or set blkio parameters")},
{"desc", N_("Get or set the current blkio parameters for a guest" \
" domain.\n" \
" To get the blkio parameters use following command: \n\n" \
" virsh # blkiotune <domain>")},
{NULL, NULL}
};
static const vshCmdOptDef opts_blkiotune[] = {
{"domain", VSH_OT_DATA, VSH_OFLAG_REQ, N_("domain name, id or uuid")},
{"weight", VSH_OT_INT, VSH_OFLAG_NONE,
N_("IO Weight in range [100, 1000]")},
{NULL, 0, 0, NULL}
};
static int
cmdBlkiotune(vshControl * ctl, const vshCmd * cmd)
{
virDomainPtr dom;
int weight = 0;
int nparams = 0;
unsigned int i = 0;
virBlkioParameterPtr params = NULL, temp = NULL;
int ret = FALSE;
if (!vshConnectionUsability(ctl, ctl->conn))
return FALSE;
if (!(dom = vshCommandOptDomain(ctl, cmd, NULL)))
return FALSE;
if (vshCommandOptInt(cmd, "weight", &weight) < 0) {
vshError(ctl, "%s",
_("Unable to parse integer parameter"));
goto cleanup;
}
if (weight) {
nparams++;
if (weight < 0) {
virDomainFree(dom);
vshError(ctl, _("Invalid value of %d for I/O weight"), weight);
goto cleanup;
}
}
if (nparams == 0) {
/* get the number of blkio parameters */
if (virDomainGetBlkioParameters(dom, NULL, &nparams, 0) != 0) {
vshError(ctl, "%s",
_("Unable to get number of blkio parameters"));
goto cleanup;
}
if (nparams == 0) {
/* nothing to output */
ret = TRUE;
goto cleanup;
}
/* now go get all the blkio parameters */
params = vshCalloc(ctl, nparams, sizeof(*params));
if (virDomainGetBlkioParameters(dom, params, &nparams, 0) != 0) {
vshError(ctl, "%s", _("Unable to get blkio parameters"));
goto cleanup;
}
for (i = 0; i < nparams; i++) {
switch (params[i].type) {
case VIR_DOMAIN_BLKIO_PARAM_INT:
vshPrint(ctl, "%-15s: %d\n", params[i].field,
params[i].value.i);
break;
case VIR_DOMAIN_BLKIO_PARAM_UINT:
vshPrint(ctl, "%-15s: %u\n", params[i].field,
params[i].value.ui);
break;
case VIR_DOMAIN_BLKIO_PARAM_LLONG:
vshPrint(ctl, "%-15s: %lld\n", params[i].field,
params[i].value.l);
break;
case VIR_DOMAIN_BLKIO_PARAM_ULLONG:
vshPrint(ctl, "%-15s: %llu\n", params[i].field,
params[i].value.ul);
break;
case VIR_DOMAIN_BLKIO_PARAM_DOUBLE:
vshPrint(ctl, "%-15s: %f\n", params[i].field,
params[i].value.d);
break;
case VIR_DOMAIN_BLKIO_PARAM_BOOLEAN:
vshPrint(ctl, "%-15s: %d\n", params[i].field,
params[i].value.b);
break;
default:
vshPrint(ctl, "unimplemented blkio parameter type\n");
}
}
ret = TRUE;
} else {
/* set the blkio parameters */
params = vshCalloc(ctl, nparams, sizeof(*params));
for (i = 0; i < nparams; i++) {
temp = &params[i];
temp->type = VIR_DOMAIN_BLKIO_PARAM_UINT;
if (weight) {
temp->value.ui = weight;
strncpy(temp->field, VIR_DOMAIN_BLKIO_WEIGHT,
sizeof(temp->field));
weight = 0;
}
}
if (virDomainSetBlkioParameters(dom, params, nparams, 0) != 0)
vshError(ctl, "%s", _("Unable to change blkio parameters"));
else
ret = TRUE;
}
cleanup:
VIR_FREE(params);
virDomainFree(dom);
return ret;
}
/*
* "memtune" command
*/
@ -10289,6 +10419,7 @@ static const vshCmdDef domManagementCmds[] = {
{"attach-disk", cmdAttachDisk, opts_attach_disk, info_attach_disk},
{"attach-interface", cmdAttachInterface, opts_attach_interface, info_attach_interface},
{"autostart", cmdAutostart, opts_autostart, info_autostart},
{"blkiotune", cmdBlkiotune, opts_blkiotune, info_blkiotune},
#ifndef WIN32
{"console", cmdConsole, opts_console, info_console},
#endif

5
tools/virsh.pod
View File

@ -618,6 +618,11 @@ flags, the current settings are displayed; with a flag, the
appropriate limit is adjusted if supported by the hypervisor. LXC and
QEMU/KVM supports I<--hard-limit>, I<--soft-limit>, and I<--swap-hard-limit>.
=item B<blkiotune> I<domain-id> optional I<--weight> B<weight>
Display or set the blkio parameters. QEMU/KVM supports I<--weight>.
I<--weight> is in range [100, 1000].
=item B<setvcpus> I<domain-id> I<count> optional I<--maximum> I<--config>
I<--live>