Let me point out that this Stephan's rant (or constructive criticism)
has hijacked responses to my original question about how well (or not)
gluster will work for my specific situation. While the general comments
are relevant (as in "it won't work for anyone, here's why"), it does
take the conversation rather far afield, without changing the subject
line. That's not helpful.
Mario Kadastik wrote:
I'm going to make this as simple as possible. Every message to this list should
follow these rules:
1. be helpful
2. be constructive
3. be respectful
I will not tolerate ranting that serves no purpose. If your message doesn't
follow any of the rules above, then you shouldn't be posting it.
Might be jumping in here at a random spot, but looking at Stephan's e-mail it
was all three. It was helpful and constructive by outlining a concrete strategy
that would make glusterfs greater in his opinion and to an extent that's
something I share, performance IS an issue and makes me hesitate in moving
glusterfs to the next level at our site (right now we have a 6 node 12 brick
configuration that's used extensively as /home, target would be a 180 node 2PB
distributed 2-way replicated installation). We hit FUSE snags from day 2 and
are running on NFS right now because negative lookup caching is not in FUSE. In
fact there is no caching. And NFS has hiccups that cause issues especially for
us because we use vz containers with bind mounting so if the headnode nfs goes
stale we have to hack a lot to get the stale mount remounted in all the VZ
images. I've had at least two or three instances where I had to stop all the
containers killing user tasks to remount stably.
And to be fair at least in this particular e-mail I didn't really see much
disrespect, just some comparisons that I think still remained in respectful
range.
Mario Kadastik, PhD
Researcher
---
"Physics is like sex, sure it may have practical reasons, but that's not why we do
it"
-- Richard P. Feynman
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In theory, there is no difference between theory and practice.
In practice, there is. .... Yogi Berra
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