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Date: Wed, 18 Jul 2012 16:02:15 +0200
From: Paolo Bonzini <pbonzini@redhat.com>
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Subject: Re: [Qemu-devel] [RFC] introduce a dynamic library to expose qemu
 block API
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To: "Daniel P. Berrange" <berrange@redhat.com>
Cc: Anthony Liguori <aliguori@us.ibm.com>, Stefan Hajnoczi <stefanha@linux.vnet.ibm.com>, Michael Tokarev <mjt@tls.msk.ru>, qemu-devel@nongnu.org, =?UTF-8?B?TGx1w61z?= <xscript@gmx.net>, Blue Swirl <blauwirbel@gmail.com>, Stefan Weil <weil@mail.berlios.de>, Hannes Reinecke <hare@suse.de>, Wenchao Xia <xiawenc@linux.vnet.ibm.com>

Il 18/07/2012 15:58, Daniel P. Berrange ha scritto:
> How is error reporting dealt with

These APIs just return errno values.

> , and what is the intent around
> thread safety of the APIs ?  I'd like to see a fully thread safe
> API - multiple threads can use the same 'BlockDriverState *'
> concurrently, and thread-local error reporting.

This is a bit difficult to provide, since the QEMU block layer itself is
not thread-safe.

Another missing feature is passwords.

Paolo