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setmem: add --current option to virsh setmem command

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This patch adds the new option (--current) to the "virsh setmem" command.
When --current option is specified, it affects a "current" domain.
The word "current" denotes that if a domain is running, it affects
a running domain only; otherwise it affects a persistent domain.

Signed-off-by: Taku Izumi <izumi.taku@jp.fujitsu.com>
This commit is contained in:
Taku Izumi 2011-03-23 14:49:28 +09:00 committed by Eric Blake
parent 95298e2380
commit 80427f1d87
2 changed files with 20 additions and 6 deletions
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20
tools/virsh.c
View File

@ -2932,6 +2932,7 @@ static const vshCmdOptDef opts_setmem[] = {
{"kilobytes", VSH_OT_INT, VSH_OFLAG_REQ, N_("number of kilobytes of memory")},
{"config", VSH_OT_BOOL, 0, N_("affect next boot")},
{"live", VSH_OT_BOOL, 0, N_("affect running domain")},
{"current", VSH_OT_BOOL, 0, N_("affect current domain")},
{NULL, 0, 0, NULL}
};
@ -2944,14 +2945,23 @@ cmdSetmem(vshControl *ctl, const vshCmd *cmd)
int ret = TRUE;
int config = vshCommandOptBool(cmd, "config");
int live = vshCommandOptBool(cmd, "live");
int current = vshCommandOptBool(cmd, "current");
int flags = 0;
/* Need to use flags if config was specified, but prefer older api
* for live-only behavior otherwise */
if (config) {
flags = VIR_DOMAIN_MEM_CONFIG;
if (current) {
if (live || config) {
vshError(ctl, "%s", _("--current must be specified exclusively"));
return FALSE;
}
flags = VIR_DOMAIN_MEM_CURRENT;
} else {
if (config)
flags |= VIR_DOMAIN_MEM_CONFIG;
if (live)
flags |= VIR_DOMAIN_MEM_LIVE;
/* neither option is specified */
if (!live && !config)
flags = -1;
}
if (!vshConnectionUsability(ctl, ctl->conn))
@ -2984,7 +2994,7 @@ cmdSetmem(vshControl *ctl, const vshCmd *cmd)
return FALSE;
}
if (!flags) {
if (flags == -1) {
if (virDomainSetMemory(dom, kilobytes) != 0) {
ret = FALSE;
}

6
tools/virsh.pod
View File

@ -583,11 +583,15 @@ B<Note>: The weight and cap parameters are defined only for the
XEN_CREDIT scheduler and are now I<DEPRECATED>.
=item B<setmem> I<domain-id> B<kilobytes> optional I<--config> I<--live>
I<--current>
Change the memory allocation for a guest domain.
If I<--live> is specified, perform a memory balloon of a running guest.
If I<--config> is specified, affect the next boot of a persistent guest.
Both flags may be given. If neither flag is given, I<--live> is assumed.
If I<--current> is specified, affect the current guest state.
Both I<--live> and I<--config> flags may be given, but I<--current> is
exclusive. If no flag is specified, behavior is different depending
on hypervisor.
Some hypervisors require a larger granularity than kilobytes, and requests
that are not an even multiple will be rounded up. For example, vSphere/ESX