hi,all,
--
We are using glusterfs 3.5 on top of centos 6.5 with openstack version I;
We have about ~50 nodes as storage server, and 300 nova computing nodes;
One questoin we have is:
When I add new servers into the storage pool, and I will have to do re-balance for the glusterfs cluster,(first fix-layout, and then migrate data);
As for the VMs are always running and the file on glusterfs is always opened, does glusterfs support online file migration?( with vm continue running, aka, open file migration supported?)
From the documentation it looks like it is ok, but in our environment, when we does the rebalance, lots of vm got disk read-only; Which is very bad;
Looking forward to get idea/experience from friends;
A similar question is, when I have say 3 replica, one node goes down for HW maintenance and when it comes back online, How does it do the re-sync? As all the VMs disks are continuously being modified, and each VM disk is pretty big(usually 5gb-40gb); It would be nightmare to re-sync the whole brick replica?
Thx
Regards
Zhu Chao
Zhu Chao
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