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setmem: add the new options to "virsh setmem" command

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This patch adds the new options (--live and --config)  to "virsh setmem" command.
The behavior of above options is the same as that of "virsh setvcpus" and so on.
That is, when the --config option is specified, a modification is effective for
the persistent domain. Moreover we can modify the memory size of inactive domains
as well as that of active domains.

Signed-off-by: Taku Izumi <izumi.taku@jp.fujitsu.com>
This commit is contained in:
Taku Izumi 2011-03-02 17:13:39 +09:00 committed by Eric Blake
parent 55141abf9d
commit 2d70a46911
2 changed files with 26 additions and 8 deletions
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19
tools/virsh.c
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@ -2904,6 +2904,8 @@ static const vshCmdInfo info_setmem[] = {
static const vshCmdOptDef opts_setmem[] = {
{"domain", VSH_OT_DATA, VSH_OFLAG_REQ, N_("domain name, id or uuid")},
{"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")},
{NULL, 0, 0, NULL}
};
@ -2914,6 +2916,17 @@ cmdSetmem(vshControl *ctl, const vshCmd *cmd)
virDomainInfo info;
unsigned long kilobytes = 0;
int ret = TRUE;
int config = vshCommandOptBool(cmd, "config");
int live = vshCommandOptBool(cmd, "live");
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 (live)
flags |= VIR_DOMAIN_MEM_LIVE;
}
if (!vshConnectionUsability(ctl, ctl->conn))
return FALSE;
@ -2945,9 +2958,15 @@ cmdSetmem(vshControl *ctl, const vshCmd *cmd)
return FALSE;
}
if (!flags) {
if (virDomainSetMemory(dom, kilobytes) != 0) {
ret = FALSE;
}
} else {
if (virDomainSetMemoryFlags(dom, kilobytes, flags) < 0) {
ret = FALSE;
}
}
virDomainFree(dom);
return ret;

11
tools/virsh.pod
View File

@ -578,9 +578,12 @@ Therefore, -1 is a useful shorthand for 262144.
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>
=item B<setmem> I<domain-id> B<kilobytes> optional I<--config> I<--live>
Immediately change the current memory allocation for an active guest domain.
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.
Some hypervisors require a larger granularity than kilobytes, and requests
that are not an even multiple will be rounded up. For example, vSphere/ESX
@ -590,10 +593,6 @@ rounds the parameter up unless the kB argument is evenly divisible by 1024
For Xen, you can only adjust the memory of a running domain if the domain is
paravirtualized or running the PV balloon driver.
Note, this command only works on active guest domains. To change the memory
allocation for an inactive guest domain, use the virsh B<edit> command to
update the XML <currentMemory> element.
=item B<setmaxmem> I<domain-id> B<kilobytes>
Change the maximum memory allocation limit for an inactive guest domain.