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qemu: Suppress error reporting from qemuMonitorDelObject in cleanup paths

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Many calls of qemuMonitorDelObject don't actually check the return value
or report the error from the object deletion itself since they are on
cleanup paths. In some cases this can lead to reporting of spurious
errors e.g. when qemuMonitorDelObject is used to clean up a possibly
pre-existing objects.

Add a new argument for qemuMonitorDelObject which controls whether
the internals report errors from qemu and fix all callers accordingly.

Note that some of the cases on device unplug which check the error code
don't in fact propagate the error to the user, but in this case it is
important to add the log entry anyways for tracing that the device
deletion failed.

https://bugzilla.redhat.com/show_bug.cgi?id=1784040

Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Michal Privoznik <mprivozn@redhat.com>
This commit is contained in:
Peter Krempa 2020-03-18 12:24:40 +01:00
parent 103bfbfd74
commit 64ed4d00c4
7 changed files with 31 additions and 26 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

10
src/qemu/qemu_block.c
View File

@ -1732,19 +1732,19 @@ qemuBlockStorageSourceAttachRollback(qemuMonitorPtr mon,
ignore_value(qemuMonitorBlockdevDel(mon, data->storageNodeName));
if (data->prmgrAlias)
ignore_value(qemuMonitorDelObject(mon, data->prmgrAlias));
ignore_value(qemuMonitorDelObject(mon, data->prmgrAlias, false));
if (data->authsecretAlias)
ignore_value(qemuMonitorDelObject(mon, data->authsecretAlias));
ignore_value(qemuMonitorDelObject(mon, data->authsecretAlias, false));
if (data->encryptsecretAlias)
ignore_value(qemuMonitorDelObject(mon, data->encryptsecretAlias));
ignore_value(qemuMonitorDelObject(mon, data->encryptsecretAlias, false));
if (data->httpcookiesecretAlias)
ignore_value(qemuMonitorDelObject(mon, data->httpcookiesecretAlias));
ignore_value(qemuMonitorDelObject(mon, data->httpcookiesecretAlias, false));
if (data->tlsAlias)
ignore_value(qemuMonitorDelObject(mon, data->tlsAlias));
ignore_value(qemuMonitorDelObject(mon, data->tlsAlias, false));
virErrorRestore(&orig_err);

2
src/qemu/qemu_driver.c
View File

@ -6047,7 +6047,7 @@ qemuDomainHotplugDelIOThread(virQEMUDriverPtr driver,
qemuDomainObjEnterMonitor(driver, vm);
rc = qemuMonitorDelObject(priv->mon, alias);
rc = qemuMonitorDelObject(priv->mon, alias, true);
exp_niothreads--;
if (rc < 0)
goto exit_monitor;

29
src/qemu/qemu_hotplug.c
View File

@ -390,7 +390,8 @@ qemuHotplugRemoveManagedPR(virQEMUDriverPtr driver,
if (qemuDomainObjEnterMonitorAsync(driver, vm, asyncJob) < 0)
goto cleanup;
ignore_value(qemuMonitorDelObject(priv->mon, qemuDomainGetManagedPRAlias()));
ignore_value(qemuMonitorDelObject(priv->mon, qemuDomainGetManagedPRAlias(),
false));
if (qemuDomainObjExitMonitor(driver, vm) < 0)
goto cleanup;
@ -471,7 +472,7 @@ qemuDomainDetachDBusVMState(virQEMUDriverPtr driver,
qemuDomainObjEnterMonitorAsync(driver, vm, asyncJob) < 0)
return -1;
ret = qemuMonitorDelObject(priv->mon, alias);
ret = qemuMonitorDelObject(priv->mon, alias, true);
if (qemuDomainObjExitMonitor(driver, vm) < 0)
return -1;
@ -1685,10 +1686,10 @@ qemuDomainDelTLSObjects(virQEMUDriverPtr driver,
goto cleanup;
if (tlsAlias)
ignore_value(qemuMonitorDelObject(priv->mon, tlsAlias));
ignore_value(qemuMonitorDelObject(priv->mon, tlsAlias, false));
if (secAlias)
ignore_value(qemuMonitorDelObject(priv->mon, secAlias));
ignore_value(qemuMonitorDelObject(priv->mon, secAlias, false));
ignore_value(qemuDomainObjExitMonitor(driver, vm));
@ -1850,9 +1851,9 @@ qemuDomainDelChardevTLSObjects(virQEMUDriverPtr driver,
qemuDomainObjEnterMonitor(driver, vm);
ignore_value(qemuMonitorDelObject(priv->mon, tlsAlias));
ignore_value(qemuMonitorDelObject(priv->mon, tlsAlias, false));
if (secAlias)
ignore_value(qemuMonitorDelObject(priv->mon, secAlias));
ignore_value(qemuMonitorDelObject(priv->mon, secAlias, false));
if (qemuDomainObjExitMonitor(driver, vm) < 0)
return -1;
@ -2307,7 +2308,7 @@ qemuDomainAttachRNGDevice(virQEMUDriverPtr driver,
exit_monitor:
virErrorPreserveLast(&orig_err);
if (objAlias)
ignore_value(qemuMonitorDelObject(priv->mon, objAlias));
ignore_value(qemuMonitorDelObject(priv->mon, objAlias, false));
if (rng->backend == VIR_DOMAIN_RNG_BACKEND_EGD && chardevAdded)
ignore_value(qemuMonitorDetachCharDev(priv->mon, charAlias));
if (qemuDomainObjExitMonitor(driver, vm) < 0)
@ -2443,7 +2444,7 @@ qemuDomainAttachMemory(virQEMUDriverPtr driver,
exit_monitor:
virErrorPreserveLast(&orig_err);
if (objAdded)
ignore_value(qemuMonitorDelObject(priv->mon, objalias));
ignore_value(qemuMonitorDelObject(priv->mon, objalias, false));
if (qemuDomainObjExitMonitor(driver, vm) < 0)
mem = NULL;
@ -2665,7 +2666,7 @@ qemuDomainAttachHostSCSIDevice(virQEMUDriverPtr driver,
drvstr, devstr);
}
if (secobjAlias)
ignore_value(qemuMonitorDelObject(priv->mon, secobjAlias));
ignore_value(qemuMonitorDelObject(priv->mon, secobjAlias, false));
ignore_value(qemuDomainObjExitMonitor(driver, vm));
virErrorRestore(&orig_err);
@ -3041,7 +3042,7 @@ qemuDomainAttachShmemDevice(virQEMUDriverPtr driver,
if (shmem->server.enabled)
ignore_value(qemuMonitorDetachCharDev(priv->mon, charAlias));
else
ignore_value(qemuMonitorDelObject(priv->mon, memAlias));
ignore_value(qemuMonitorDelObject(priv->mon, memAlias, false));
}
if (qemuDomainObjExitMonitor(driver, vm) < 0)
@ -4367,7 +4368,7 @@ qemuDomainRemoveMemoryDevice(virQEMUDriverPtr driver,
backendAlias = g_strdup_printf("mem%s", mem->info.alias);
qemuDomainObjEnterMonitor(driver, vm);
rc = qemuMonitorDelObject(priv->mon, backendAlias);
rc = qemuMonitorDelObject(priv->mon, backendAlias, true);
if (qemuDomainObjExitMonitor(driver, vm) < 0)
rc = -1;
@ -4483,7 +4484,7 @@ qemuDomainRemoveHostDevice(virQEMUDriverPtr driver,
/* If it fails, then so be it - it was a best shot */
if (objAlias)
ignore_value(qemuMonitorDelObject(priv->mon, objAlias));
ignore_value(qemuMonitorDelObject(priv->mon, objAlias, false));
if (qemuDomainObjExitMonitor(driver, vm) < 0)
return -1;
@ -4741,7 +4742,7 @@ qemuDomainRemoveRNGDevice(virQEMUDriverPtr driver,
qemuDomainObjEnterMonitor(driver, vm);
if (rc == 0 &&
qemuMonitorDelObject(priv->mon, objAlias) < 0)
qemuMonitorDelObject(priv->mon, objAlias, true) < 0)
rc = -1;
if (rng->backend == VIR_DOMAIN_RNG_BACKEND_EGD &&
@ -4802,7 +4803,7 @@ qemuDomainRemoveShmemDevice(virQEMUDriverPtr driver,
if (shmem->server.enabled)
rc = qemuMonitorDetachCharDev(priv->mon, charAlias);
else
rc = qemuMonitorDelObject(priv->mon, memAlias);
rc = qemuMonitorDelObject(priv->mon, memAlias, true);
if (qemuDomainObjExitMonitor(driver, vm) < 0)
return -1;

5
src/qemu/qemu_monitor.c
View File

@ -2966,13 +2966,14 @@ qemuMonitorAddObject(qemuMonitorPtr mon,
int
qemuMonitorDelObject(qemuMonitorPtr mon,
const char *objalias)
const char *objalias,
bool report_error)
{
VIR_DEBUG("objalias=%s", objalias);
QEMU_CHECK_MONITOR(mon);
return qemuMonitorJSONDelObject(mon, objalias);
return qemuMonitorJSONDelObject(mon, objalias, report_error);
}

3
src/qemu/qemu_monitor.h
View File

@ -931,7 +931,8 @@ int qemuMonitorAddObject(qemuMonitorPtr mon,
ATTRIBUTE_NONNULL(2);
int qemuMonitorDelObject(qemuMonitorPtr mon,
const char *objalias);
const char *objalias,
bool report_error);
int qemuMonitorAddDrive(qemuMonitorPtr mon,
const char *drivestr);

5
src/qemu/qemu_monitor_json.c
View File

@ -4448,7 +4448,8 @@ qemuMonitorJSONAddObject(qemuMonitorPtr mon,
int
qemuMonitorJSONDelObject(qemuMonitorPtr mon,
const char *objalias)
const char *objalias,
bool report_error)
{
g_autoptr(virJSONValue) cmd = NULL;
g_autoptr(virJSONValue) reply = NULL;
@ -4459,7 +4460,7 @@ qemuMonitorJSONDelObject(qemuMonitorPtr mon,
if (qemuMonitorJSONCommand(mon, cmd, &reply) < 0)
return -1;
if (qemuMonitorJSONCheckError(cmd, reply) < 0)
if (qemuMonitorJSONCheckErrorFull(cmd, reply, report_error) < 0)
return -1;
return 0;

3
src/qemu/qemu_monitor_json.h
View File

@ -237,7 +237,8 @@ int qemuMonitorJSONAddObject(qemuMonitorPtr mon,
virJSONValuePtr props);
int qemuMonitorJSONDelObject(qemuMonitorPtr mon,
const char *objalias);
const char *objalias,
bool report_error);
int qemuMonitorJSONTransaction(qemuMonitorPtr mon, virJSONValuePtr *actions)
ATTRIBUTE_NONNULL(1) ATTRIBUTE_NONNULL(2);