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util: Propagate numad failures correctly

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Right now, if numad fails, we raise an error but return an
empty string to the caller instead of a NULL pointer, which
means processing will continue and the user will see

  # virsh start guest
  error: Failed to start domain guest
  error: invalid argument: Failed to parse bitmap ''

instead of a more reasonable

  # virsh start guest
  error: Failed to start domain guest
  error: operation failed: Failed to query numad for the advisory nodeset

Make sure the user gets a better error message.

https://bugzilla.redhat.com/show_bug.cgi?id=1716387

Signed-off-by: Andrea Bolognani <abologna@redhat.com>
Reviewed-by: Daniel Henrique Barboza <danielhb413@gmail.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
This commit is contained in:
Andrea Bolognani 2019-06-03 18:45:27 +02:00
parent 5f2212c062
commit b34fb1fb6f
1 changed files with 4 additions and 2 deletions
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6
src/util/virnuma.c
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@ -66,10 +66,12 @@ virNumaGetAutoPlacementAdvice(unsigned short vcpus,
virCommandSetOutputBuffer(cmd, &output);
if (virCommandRun(cmd, NULL) < 0)
virReportError(VIR_ERR_INTERNAL_ERROR, "%s",
if (virCommandRun(cmd, NULL) < 0) {
virReportError(VIR_ERR_OPERATION_FAILED, "%s",
_("Failed to query numad for the "
"advisory nodeset"));
VIR_FREE(output);
}
return output;
}