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

2014-07-11 Thread Benoît Canet
The Friday 11 Jul 2014 à 11:01:22 (+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] block/quorum: add simple read pattern support

2014-07-11 Thread Eric Blake
On 07/10/2014 09:01 PM, 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 integrity at the

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

2014-07-11 Thread Liu Yuan
On Fri, Jul 11, 2014 at 12:56:53PM +0200, Benoît Canet wrote: The Friday 11 Jul 2014 à 11:01:22 (+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] block/quorum: add simple read pattern support

2014-07-11 Thread Liu Yuan
On Fri, Jul 11, 2014 at 08:06:36AM -0600, Eric Blake wrote: On 07/10/2014 09:01 PM, 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

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

2014-07-10 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