Re: crushmap rule issue: choose vs. chooseleaf

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On Thu, 24 Jun 2010, Jim Schutt wrote:
> On Thu, 2010-06-24 at 12:20 -0600, Sage Weil wrote:
> > Hi Jim,
> > 
> > Okay, I fixed another bug and am now able to use your map without 
> > problems.  The fix is pushed to the unstable branch in ceph.git.
> 
> Great, thanks!  I really appreciate you being able to take a look so 
> quickly.

No problem!

> > I'm surprised we didn't run into this before.. it looks like it's been 
> > broken for a while.  I'm adding a tracker item to set up some unit tests 
> > for this stuff so we can avoid this sort of regression.. the crush code 
> > should be really easy to check.
> 
> That sounds great.
> 
> I'm still having a little trouble, though.
> 
> My map works for me now, in the sense that I can mount
> the file system from a client.
> 
> But when I try to write to it, vmstat on the server shows
> I get a little burst of I/O on the servers, and then nothing.

Oh, the same fix needs to be applied to the kernel code as well.  I've 
just pushed that out (ceph-client.git master and 
ceph-client-standalone.git master+master-backport branches).  Hopefully 
that will clear it up?

sage
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