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add --live support to "virsh dump" 

This is trivial for QEMU since you just have to not stop the vm before
starting the dump.  And for Xen, you just pass the flag down to xend.

* include/libvirt/libvirt.h.in (virDomainCoreDumpFlags): Add VIR_DUMP_LIVE.
* src/qemu/qemu_driver.c (qemudDomainCoreDump): Support live dumping.
* src/xen/xend_internal.c (xenDaemonDomainCoreDump): Support live dumping.
* tools/virsh.c (opts_dump): Add --live. (cmdDump): Map it to VIR_DUMP_LIVE.
This commit is contained in:
Paolo Bonzini 2009-12-14 12:10:38 +01:00 committed by Daniel Veillard
parent b927aed8a3
commit 1fb7af40cd
4 changed files with 8 additions and 4 deletions
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1
include/libvirt/libvirt.h.in
View File

@ -337,6 +337,7 @@ typedef virDomainInterfaceStatsStruct *virDomainInterfaceStatsPtr;
/* Domain core dump flags. */
typedef enum {
VIR_DUMP_CRASH = (1 << 0), /* crash after dump */
VIR_DUMP_LIVE = (1 << 1), /* live dump */
} virDomainCoreDumpFlags;
/* Domain migration flags. */

7
src/qemu/qemu_driver.c
View File

@ -3856,15 +3856,14 @@ static int qemudDomainCoreDump(virDomainPtr dom,
driver->securityDriver->domainSetSavedStateLabel(dom->conn, vm, path) == -1)
goto endjob;
/* Migrate will always stop the VM, so once we support live dumping
the resume condition will stay the same, independent of whether
the stop command is issued. */
/* Migrate will always stop the VM, so the resume condition is
independent of whether the stop command is issued. */
resume = (vm->state == VIR_DOMAIN_RUNNING);
qemuDomainObjPrivatePtr priv = vm->privateData;
/* Pause domain for non-live dump */
if (vm->state == VIR_DOMAIN_RUNNING) {
if (!(flags & VIR_DUMP_LIVE) && vm->state == VIR_DOMAIN_RUNNING) {
qemuDomainObjEnterMonitor(vm);
if (qemuMonitorStopCPUs(priv->mon) < 0) {
qemuDomainObjExitMonitor(vm);

1
src/xen/xend_internal.c
View File

@ -3255,6 +3255,7 @@ xenDaemonDomainCoreDump(virDomainPtr domain, const char *filename,
return xend_op(domain->conn, domain->name,
"op", "dump", "file", filename, "live", "0",
"live", (flags & VIR_DUMP_LIVE ? "1" : "0"),
"crash", (flags & VIR_DUMP_CRASH ? "1" : "0"),
NULL);
}

3
tools/virsh.c
View File

@ -1431,6 +1431,7 @@ static const vshCmdInfo info_dump[] = {
};
static const vshCmdOptDef opts_dump[] = {
{"live", VSH_OT_BOOL, 0, gettext_noop("perform a live core dump if supported")},
{"crash", VSH_OT_BOOL, 0, gettext_noop("crash the domain after core dump")},
{"domain", VSH_OT_DATA, VSH_OFLAG_REQ, gettext_noop("domain name, id or uuid")},
{"file", VSH_OT_DATA, VSH_OFLAG_REQ, gettext_noop("where to dump the core")},
@ -1455,6 +1456,8 @@ cmdDump(vshControl *ctl, const vshCmd *cmd)
if (!(dom = vshCommandOptDomain(ctl, cmd, &name)))
return FALSE;
if (vshCommandOptBool (cmd, "live"))
flags |= VIR_DUMP_LIVE;
if (vshCommandOptBool (cmd, "crash"))
flags |= VIR_DUMP_CRASH;