[Gluster-users] GlusterFS as virtual machine storage

WK wkmail at bneit.com
Sun Sep 10 20:06:55 UTC 2017

On 9/10/2017 2:02 AM, Pavel Szalbot wrote:
> WK: I use bonded 2x10Gbps and I do get crashes only in heavy I/O
> situations (fio). Upgrading system (apt-get dist-upgrade) was ok, so
> this might be even related to amount of IOPS.
> -ps

Well, 20Gbps of writes could overwhelm a lot of DFS clusters. We saw VMs 
being overwhelmed by Gigabit speed large file copy ops into the VM with 
early versions of Ceph and MooseFS (MFS 1.6.x. was really vulnerable to 
that, MFS 3.x is much improved in that regard).

Your success with the fuse client may be because it has a more 
complicated path than libgfapi, thus slowing down/buffering data enough 
to let the cluster catch up.

Also you are on simple replica. With a more advanced Gluster setup 
involving distribute that write load would be spread out more.

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