From: Max Reitz <mreitz@redhat.com>
To: "Benoît Canet" <benoit.canet@irqsave.net>
Cc: kwolf@redhat.com, qemu-devel@nongnu.org, stefanha@redhat.com
Subject: Re: [Qemu-devel] [PATCH V9 06/11] quorum: Add quorum mechanism.
Date: Tue, 29 Oct 2013 17:42:01 +0100 [thread overview]
Message-ID: <526FE559.2000201@redhat.com> (raw)
In-Reply-To: <20131028123119.GB2890@irqsave.net>
Am 28.10.2013 13:31, schrieb Benoît Canet:
> Le Friday 04 Oct 2013 à 16:48:12 (+0200), Max Reitz a écrit :
>> On 2013-10-02 14:39, Benoît Canet wrote:
>>> Use gnutls's SHA-256 to compare versions.
>> Wouldn't CRC32 suffice? (I don't really oppose using SHA, but taking
>> in gnutls as a dependency just for comparing several memory areas
>> seems a bit much to me)
> Initially it gzip's addler32 was used but someone was concerned with the risk
> of collisions.
> Anyway the code fallback using hashes only when something wrong is detected so
> it won't impact the normal case.
>
> Best regards
>
> Benoît
Yes, that's correct, but it adds a new dependency to qemu. Personally, I
am unable to decide whether this is better than having a higher risk of
collisions with CRC, so I'll leave the decision to someone more
qualified (like you). ;-)
Max
next prev parent reply other threads:[~2013-10-29 16:42 UTC|newest]
Thread overview: 36+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-10-02 12:39 [Qemu-devel] [PATCH V9 00/11] Quorum block driver Benoît Canet
2013-10-02 12:39 ` [Qemu-devel] [PATCH V9 01/11] quorum: Create quorum.c, add QuorumSingleAIOCB and QuorumAIOCB Benoît Canet
2013-10-04 14:33 ` Max Reitz
2013-10-02 12:39 ` [Qemu-devel] [PATCH V9 02/11] quorum: Create BDRVQuorumState and BlkDriver and do init Benoît Canet
2013-10-04 14:34 ` Max Reitz
2013-10-02 12:39 ` [Qemu-devel] [PATCH V9 03/11] quorum: Add quorum_aio_writev and its dependencies Benoît Canet
2013-10-04 14:35 ` Max Reitz
2013-10-28 12:21 ` Benoît Canet
2013-10-29 17:21 ` Max Reitz
2013-10-29 20:06 ` Benoît Canet
2013-10-02 12:39 ` [Qemu-devel] [PATCH V9 04/11] blkverify: Extract qemu_iovec_clone() and qemu_iovec_compare() from blkverify Benoît Canet
2013-10-02 12:39 ` [Qemu-devel] [PATCH V9 05/11] quorum: Add quorum_aio_readv Benoît Canet
2013-10-04 14:38 ` Max Reitz
2013-10-02 12:39 ` [Qemu-devel] [PATCH V9 06/11] quorum: Add quorum mechanism Benoît Canet
2013-10-04 14:48 ` Max Reitz
2013-10-28 12:31 ` Benoît Canet
2013-10-29 16:42 ` Max Reitz [this message]
2013-10-28 13:04 ` Benoît Canet
2013-10-29 17:34 ` Max Reitz
2013-10-02 12:39 ` [Qemu-devel] [PATCH V9 07/11] quorum: Add quorum_getlength() Benoît Canet
2013-10-04 14:49 ` Max Reitz
2013-10-02 12:39 ` [Qemu-devel] [PATCH V9 08/11] quorum: Add quorum_invalidate_cache() Benoît Canet
2013-10-02 12:39 ` [Qemu-devel] [PATCH V9 09/11] quorum: Add quorum_co_get_block_status Benoît Canet
2013-10-04 14:51 ` Max Reitz
2013-10-02 12:39 ` [Qemu-devel] [PATCH V9 10/11] quorum: Add quorum_co_flush() Benoît Canet
2013-10-04 14:53 ` Max Reitz
2013-10-02 12:39 ` [Qemu-devel] [PATCH V9 11/11] quorum: Add quorum_open() and quorum_close() Benoît Canet
2013-10-04 15:14 ` Max Reitz
2013-10-04 15:31 ` Eric Blake
2013-10-07 7:23 ` Max Reitz
2013-10-04 14:31 ` [Qemu-devel] [PATCH V9 00/11] Quorum block driver Max Reitz
2013-10-04 22:25 ` Benoît Canet
2013-10-29 7:59 ` Benoît Canet
2013-10-29 17:55 ` Max Reitz
2013-10-29 17:56 ` Max Reitz
2013-10-29 20:06 ` Benoît Canet
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