Re: [libvirt] [PATCH] errors: Improve error reporting to log multiple errors instead of just the last one

On 01/19/2012 02:20 PM, Daniel P. Berrange wrote: > On Thu, Jan 19, 2012 at 02:13:59PM +0100, Michal Novotny wrote: >> This patch introduces a new structure called virErrorsPtr which can get all >> the errors that occurred since the connection open. The error callback function >> is being used as many times as necessary. The new public function called >> virGetAllErrors() has been introduced to get all the errors that occurred. > This impl is effectively an unbounded memory leak, if you consider > that applications will keep the same virConnectPtr open more or > less forever. > > In addition any libvirt API that raises multiple errors should be > considered broken, so I don't think we should have any such API > for querying multiple errors. > > What is the situation that motivated this new API ? This is simple. When you have situation with e.g. disk or domain creation. It fails but you don't know why. Sometimes the disk creation may fail on insufficient permissions and sometimes there may be not enough space etc... The same for domain creation.