On 09/11/2013 10:09 AM, Kal Black wrote:
Hello,
I asked this question some days ago but did not get any answer so far so
I am posting it again.
Can someone explain how Gluster native client reads from a Gluster
replicated volume?
1. Is there a mechanism that would spread requests, form a single
client, among all bricks/servers, taking part in a replica volume?
A gluster native client sends read requests to every replica in the volume.
It reads from the first server to respond.
Other responses are discarded. The client only reads from a single server.
2. Would the native client take a decision where (brick/server) to fetch
a file from based on some criteria or it will be bound to a give
brick/server all the time?
3. Is a file being downloaded from just one of the gluster servers?
I did some tests, trying to measure network traffic between gluster
servers and a client using "iptraf" and "gluster volume status Volname
client", which gave confusing results so I would like someone to clear
this out for me if possible.
Thank you!
Kal
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Kaleb
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