Re: lstat() hangs on single file

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On Sat, Feb 13, 2016 at 8:14 AM, Blade Doyle <blade.doyle@xxxxxxxxx> wrote:
> Greg,  Thats very useful info.  I had not queried the admin sockets before
> today, so I am learning new things!
>
> on the x86_64: mds, mon, and osd, and rbd + cephfs client
> ceph version 0.94.5 (9764da52395923e0b32908d83a9f7304401fee43)
>
> On the arm7 nodes: mon, osd, and rbd + cephfs clients
> ceph version 0.94.3 (95cefea9fd9ab740263bf8bb4796fd864d9afe2b)
>
> Yes, all reported ops are on the same inode.
>
> I power cycled the entire cluster last night, including mds and clients.
> That *did* clear up the read locks and I was able to access the files again.
>
> However, the stuck read locks have returned ;(   So now I have the same
> issue again.
>
> It seems likely that the "plex" media player is the client that holds the
> initial hanging read lock.  It could be something specific that app is
> doing, or could just be a coincidence.
>
> It would be reasonably easy to update ceph version on the x86_64 (mds
> server, a mon, and the client running plex).  I'll work on that if you think
> it could solve my issues?

It might. If it doesn't I'd be interested in whatever logs and
debugging information you can share with upstream to try and identify
what's going on. :)
-Greg

>
> Thanks again!
> Blade.
>
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>
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