[ClusterLabs] Antw: Re: Performance of a mirrored LV (cLVM) with OCFS: Attempt to monitor it

Lars Marowsky-Bree lmb at suse.com
Mon Apr 25 06:47:12 EDT 2016


On 2016-04-25T12:40:31, Ulrich Windl <Ulrich.Windl at rz.uni-regensburg.de> wrote:

> As we've made good experience with MD-RAID, I really thought about having an
> MD-RAID on one node and export that RAID via iSCSI to all the nodes that need
> access. Unfortunately I cannot compare performance ahead of time 8-(

The additional IO hop would pretty badly hurt. Not so much on bandwidth
(if your NICs are capable of handling the throughput), but latency adds
up.


-- 
Architect SDS, Distinguished Engineer
SUSE Linux GmbH, GF: Felix Imendörffer, Jane Smithard, Graham Norton, HRB 21284 (AG Nürnberg)
"Experience is the name everyone gives to their mistakes." -- Oscar Wilde





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