Re: [ceph-users] fiemap bug on giant

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[dropping ceph-users]

On Tue, 25 Nov 2014, Haomai Wang wrote:
> It's surprised that the test machine run on a very new kernel but
> occur this problem:
> 
> plana 47 is 12.04.5 with kernel 3.18.0-rc6-ceph-00024-geb0e5fd
> 
> plana 50 is 12.04.4 with kernel 3.17.0-rc6-ceph-00002-ge8acad6
> 
> Which local filesystem is ran on?

This run was XFS.  It looks like it returned a mapping for fewer bytes 
than it was asked for... 54548 turned into 53904.  That's a bit 
disconcerting!  Maybe teh issue is that the start offset wasn't aligned?

sage



> 
> On Tue, Nov 25, 2014 at 5:03 AM, Samuel Just <sam.just@xxxxxxxxxxx> wrote:
> > Bug #10166 (http://tracker.ceph.com/issues/10166) can cause recovery
> > to result in incorrect object sizes on giant if the setting 'filestore
> > fiemap' is set to true.  This setting is disabled by default.  This
> > should be fixed in a future point release, though filestore fiemap
> > will probably continue to default to false.
> > -Sam
> > _______________________________________________
> > ceph-users mailing list
> > ceph-users@xxxxxxxxxxxxxx
> > http://lists.ceph.com/listinfo.cgi/ceph-users-ceph.com
> 
> 
> 
> -- 
> Best Regards,
> 
> Wheat
> _______________________________________________
> ceph-users mailing list
> ceph-users@xxxxxxxxxxxxxx
> http://lists.ceph.com/listinfo.cgi/ceph-users-ceph.com
> 
> 
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