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From: Eric Blake <eblake@redhat.com>
To: "Kevin Wolf" <kwolf@redhat.com>,
	"Benoît Canet" <benoit.canet@irqsave.net>
Cc: qemu-devel@nongnu.org, stefanha@redhat.com, mreitz@redhat.com
Subject: Re: [Qemu-devel] [PATCH V19 06/12] quorum: Add quorum mechanism.
Date: Fri, 21 Feb 2014 15:44:06 -0700	[thread overview]
Message-ID: <5307D6B6.3050108@redhat.com> (raw)
In-Reply-To: <20140221223809.GI3346@dhcp-200-207.str.redhat.com>

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On 02/21/2014 03:38 PM, Kevin Wolf wrote:
>>>> +- "ret":          The IO return code.
>>>
>>> What values is this likely to contain?  Is it a finite set, in which
>>> case it would be nice to have a QAPI enum that describes the set of
>>> return codes, rather than a raw number?
>>
>> It's anything that the block stack could return as an error.
> 
> In other words, it's meaning depends on the host and the value is only
> suitable for human readers. Perhaps we could change this to strerror(),
> which is, I believe, the same as error_setg_errno() does.

Ah, so you're saying that 'ret' would be a '-errno' value - in that
case, yes, converting it to string, and documenting this field as a
human-only strerror() representation of the error would also work (using
'str', rather than an enum type).

-- 
Eric Blake   eblake redhat com    +1-919-301-3266
Libvirt virtualization library http://libvirt.org


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  reply	other threads:[~2014-02-21 22:44 UTC|newest]

Thread overview: 24+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2014-02-21 21:21 [Qemu-devel] [PATCH V19 00/12] Quorum block filter Benoît Canet
2014-02-21 21:21 ` [Qemu-devel] [PATCH V19 01/12] quorum: Create quorum.c, add QuorumChildRequest and QuorumAIOCB Benoît Canet
2014-02-21 21:21 ` [Qemu-devel] [PATCH V19 02/12] quorum: Create BDRVQuorumState and BlkDriver and do init Benoît Canet
2014-02-21 21:21 ` [Qemu-devel] [PATCH V19 03/12] quorum: Add quorum_aio_writev and its dependencies Benoît Canet
2014-02-21 21:21 ` [Qemu-devel] [PATCH V19 04/12] blkverify: Extract qemu_iovec_clone() and qemu_iovec_compare() from blkverify Benoît Canet
2014-02-21 21:21 ` [Qemu-devel] [PATCH V19 05/12] quorum: Add quorum_aio_readv Benoît Canet
2014-02-21 21:21 ` [Qemu-devel] [PATCH V19 06/12] quorum: Add quorum mechanism Benoît Canet
2014-02-21 22:09   ` Eric Blake
2014-02-21 22:30     ` Benoît Canet
2014-02-21 22:38       ` Kevin Wolf
2014-02-21 22:44         ` Eric Blake [this message]
2014-02-21 22:50           ` Benoît Canet
2014-02-21 23:32             ` Eric Blake
2014-02-21 22:41       ` Eric Blake
2014-02-21 21:21 ` [Qemu-devel] [PATCH V19 07/12] quorum: Add quorum_getlength() Benoît Canet
2014-02-21 21:21 ` [Qemu-devel] [PATCH V19 08/12] quorum: Add quorum_invalidate_cache() Benoît Canet
2014-02-21 21:21 ` [Qemu-devel] [PATCH V19 09/12] quorum: Add quorum_co_flush() Benoît Canet
2014-02-21 21:21 ` [Qemu-devel] [PATCH V19 10/12] quorum: Implement recursive .bdrv_recurse_is_first_non_filter in quorum Benoît Canet
2014-02-21 21:21 ` [Qemu-devel] [PATCH V19 11/12] quorum: Add quorum_open() and quorum_close() Benoît Canet
2014-02-21 21:57   ` Eric Blake
2014-02-21 21:21 ` [Qemu-devel] [PATCH V19 12/12] quorum: Add unit test Benoît Canet
2014-02-21 21:39 ` [Qemu-devel] [PATCH V19 00/12] Quorum block filter Kevin Wolf
2014-02-21 22:49 ` Eric Blake
2014-02-21 22:58   ` Benoît Canet

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