Re: [Qemu-devel] [PATCH v5 2/2] block/quorum: add simple read pattern support

2014-08-21 Thread Liu Yuan
On Mon, Aug 18, 2014 at 01:59:28PM +0800, Liu Yuan wrote: On Fri, Aug 15, 2014 at 03:59:04PM +0200, Benoît Canet wrote: The Friday 15 Aug 2014 à 13:05:17 (+0800), Liu Yuan wrote : This patch adds single read pattern to quorum driver and quorum vote is default pattern. For now

Re: [Qemu-devel] [PATCH v5 2/2] block/quorum: add simple read pattern support

2014-08-21 Thread Benoît Canet
The Friday 15 Aug 2014 à 13:05:17 (+0800), Liu Yuan wrote : This patch adds single read pattern to quorum driver and quorum vote is default pattern. For now we do a quorum vote on all the reads, it is designed for unreliable underlying storage such as non-redundant NFS to make sure data

Re: [Qemu-devel] [PATCH v5 2/2] block/quorum: add simple read pattern support

2014-08-18 Thread Liu Yuan
On Fri, Aug 15, 2014 at 03:59:04PM +0200, Benoît Canet wrote: The Friday 15 Aug 2014 à 13:05:17 (+0800), Liu Yuan wrote : This patch adds single read pattern to quorum driver and quorum vote is default pattern. For now we do a quorum vote on all the reads, it is designed for

Re: [Qemu-devel] [PATCH v5 2/2] block/quorum: add simple read pattern support

2014-08-15 Thread Benoît Canet
The Friday 15 Aug 2014 à 13:05:17 (+0800), Liu Yuan wrote : This patch adds single read pattern to quorum driver and quorum vote is default pattern. For now we do a quorum vote on all the reads, it is designed for unreliable underlying storage such as non-redundant NFS to make sure data

[Qemu-devel] [PATCH v5 2/2] block/quorum: add simple read pattern support

2014-08-14 Thread Liu Yuan
This patch adds single read pattern to quorum driver and quorum vote is default pattern. For now we do a quorum vote on all the reads, it is designed for unreliable underlying storage such as non-redundant NFS to make sure data integrity at the cost of the read performance. For some use cases as