Hitoshi Mitake

@twanc sbd isn't tested and not mature. Actually, benchmark by @zhanghongzhou showed that iSCSI interface of sheepdog provides better performance: https://github.com/sheepdog/sheepdog/issues/156#issuecomment-142472095 Could you try iSCSI instead of sbd? You can...

@sirio81 BTW, how did you formatted your cluster in this case? -c 2:1?

@clicx currently sheepdog doesn't provide the notification mechanism. Is polling not suitable for your use case? I'd like to know the detailed requirement of the notification.

Polling means frequent and periodic checking of the attr. Anyway, using attrs for the locking purpose isn't a good idea. Assume a schedule like below: 1. VM1 is using VDI1...

The qemu block driver communicates with only one gateway that is specified during the boot time of the qemu process. And the gateway node calculates object locations based on sheepdog's...

> improve sheepdog datapath : qemu communicates directly with the node that has the data instead of going thru the gateway I'm not sure about the effort of this optimization...

Thanks a lot, I'm looking forwrad to seeing your simulator and its results :) It has been a long desired feature but no one could work on it for now.

The scenario seems to be a good example. If we can have a general simulator that can handle configurable parameters (e.g. a number of disks, a number of nodes, a...

@dachary thanks a lot for the simulator! It seems to be really good for start point. I'd like to review it in detail this week, could you wait for a...

@dachary I looked your code and the below would be a source of the imbalance. > v->hash = sd_hash_64(host); For calculating the vnode correctly, the initial hash value needs to...