Re: [PATCH 1/5] virlog: Don't log devmapper

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On 03/26/2018 10:44 AM, Peter Krempa wrote:
> On Mon, Mar 26, 2018 at 09:49:08 +0200, Peter Krempa wrote:
>> On Mon, Mar 26, 2018 at 07:16:42 +0200, Michal Privoznik wrote:
>>> Unless overridden, libdevmapper logs all messages to stderr.
>>> Therefore if something goes wrong in storage_backend_mpath.c or
>>> parthelper.c we don't honour user set logging targets.
> 
> 'parthelper.c' does not use our logging code and also does not use any
> libdevmapper.h functions. According to my experiment the header file
> include can be dropped.
> 
>>>
>>> Signed-off-by: Michal Privoznik <mprivozn@xxxxxxxxxx>
>>> ---
>>>  src/util/virlog.c | 23 +++++++++++++++++++++++
>>>  1 file changed, 23 insertions(+)
>>
>> I think this should be done in the function which registers the mpath
>> storage backend. For now it should work as is, but given that we are
>> going to split the daemons this code will not really be necessary in
>> other places.
> 
> So looking at the new code you've added in this series, it still might
> be desirable to move all the libdevmapper use into the storage driver
> and keep it there, so users wanting to use multipath would need to
> install the corresponding storage driver.
> 
> Given that moving it there might be impractical, I'll suggest that you
> move it to a separate util file and add virOnce infrastructure to set
> the error helpers.
> 

Okay, fair enough. I'll wait for review on the rest of the patches
before I post v2.

Thanks,
Michal

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