From: "Daniel P. Berrange" <berrange@redhat.com> If an LXC VM fails to start, quite a few cleanup paths will result in the original error message being overwritten. Some other cleanup paths also forgot to actually terminate the VM. * src/lxc/lxc_driver.c: Ensure VM is terminated on startup failure and preserve original error --- src/lxc/lxc_driver.c | 29 +++++++++++++++++++++-------- 1 files changed, 21 insertions(+), 8 deletions(-) diff --git a/src/lxc/lxc_driver.c b/src/lxc/lxc_driver.c index 23efe1e..eabc1fb 100644 --- a/src/lxc/lxc_driver.c +++ b/src/lxc/lxc_driver.c @@ -1622,6 +1622,7 @@ static int lxcVmStart(virConnectPtr conn, char *timestamp; virCommandPtr cmd = NULL; lxcDomainObjPrivatePtr priv = vm->privateData; + virErrorPtr err = NULL; if (!lxc_driver->cgroup) { lxcError(VIR_ERR_INTERNAL_ERROR, "%s", @@ -1753,8 +1754,7 @@ static int lxcVmStart(virConnectPtr conn, _("guest failed to start: %s"), out); } - lxcVmTerminate(driver, vm, VIR_DOMAIN_SHUTOFF_FAILED); - goto cleanup; + goto error; } if ((priv->monitorWatch = virEventAddHandle( @@ -1762,31 +1762,33 @@ static int lxcVmStart(virConnectPtr conn, VIR_EVENT_HANDLE_ERROR | VIR_EVENT_HANDLE_HANGUP, lxcMonitorEvent, vm, NULL)) < 0) { - lxcVmTerminate(driver, vm, VIR_DOMAIN_SHUTOFF_FAILED); - goto cleanup; + goto error; } if (autoDestroy && lxcProcessAutoDestroyAdd(driver, vm, conn) < 0) - goto cleanup; + goto error; /* * Again, need to save the live configuration, because the function * requires vm->def->id != -1 to save tty info surely. */ if (virDomainSaveConfig(driver->stateDir, vm->def) < 0) - goto cleanup; + goto error; if (virDomainObjSetDefTransient(driver->caps, vm, false) < 0) - goto cleanup; + goto error; /* Write domain status to disk. */ if (virDomainSaveStatus(driver->caps, driver->stateDir, vm) < 0) - goto cleanup; + goto error; rc = 0; cleanup: + if (rc != 0 && !err) + err = virSaveLastError(); + VIR_WARN("Cleanup %s" , err && err->message ? err->message : NULL); virCommandFree(cmd); if (VIR_CLOSE(logfd) < 0) { virReportSystemError(errno, "%s", _("could not close logfile")); @@ -1805,7 +1807,18 @@ cleanup: VIR_FORCE_CLOSE(handshakefds[0]); VIR_FORCE_CLOSE(handshakefds[1]); VIR_FREE(logfile); + + if (err) { + virSetError(err); + virResetError(err); + } + return rc; + +error: + err = virSaveLastError(); + lxcVmTerminate(driver, vm, VIR_DOMAIN_SHUTOFF_FAILED); + goto cleanup; } /** -- 1.7.6.4