[Gluster-users] how well will this work

Stephan von Krawczynski skraw at ithnet.com
Thu Dec 27 20:36:16 UTC 2012

Dear JM,

unfortunately one has to tell openly that the whole concept that is tried here
is simply wrong. The problem is not the next-bug-to-fix. The problem is the
client strategy in user space. It is broken by design. You can either believe
this or go ahead ignoring it and never really get a good and stable setup.
Really, the whole we-close-our-eyes-and-hope-it-will-turn-out-well strategy
looks just like btrfs. Read the archives, I told them years ago it will not
work out in our life time. And today, still they have no ready-for-production
fs, and believe me: it never will be there.
And the same goes for glusterfs. It _could_ be the greatest fs on earth, but
only if you accept:

1) Throw away all non-linux code. Because this war is over since long.
2) Make a kernel based client/server implementation. Because it is the only
way to acceptable performance.
3) Implement true undelete feature. Make delete a move to a deleted-files area.

These are the minimal steps to take for a real success, everything else is
just beating the dead horse. 


On Thu, 27 Dec 2012 10:03:10 -0500 (EST)
John Mark Walker <johnmark at redhat.com> wrote:

> Look, fuse its issues that we all know about. Either it works for you or it doesn't. If fuse bothers you that much, look into libgfapi. 
> Re: NFS - I'm trying to help track this down. Please either add your comment to an existing bug or create a new ticket. 
> Either way, ranting won't solve your problem or inspire anyone to fix it. 
> -JM
> Stephan von Krawczynski <skraw at ithnet.com> wrote:
> On Wed, 26 Dec 2012 22:04:09 -0800
> Joe Julian <joe at julianfamily.org> wrote:
> > It would probably be better to ask this with end-goal questions instead 
> > of with a unspecified "critical feature" list and "performance problems".
> > 
> > 6 months ago, for myself and quite an extensive (and often impressive) 
> > list of users there were no missing critical features nor was there any 
> > problems with performance. That's not to say that they did not meet your 
> > design specifications, but without those specs you're the only one who 
> > could evaluate that.
> Well, then the list of users does obviously not contain me ;-)
> The damn thing will only become impressive if a native kernel client module is
> done. FUSE is really a pain.
> And read my lips: the NFS implementation has general load/performance problems.
> Don't be surprised if it jumps into your face.
> Why on earth do they think linux has NFS as kernel implementation?
> -- 
> Regards,
> Stephan
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