Re: rbd cache command thru admin socket

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Thanks, Jason--

Turns out AppArmor was indeed enabled (I was not aware of that).
Disabled it and now I see the socket but it seems to only be there
temporarily while some client app is running.

The original reason I wanted to use this socket was that I am also
using an rbd images thru kvm and I wanted to be able to flush and 
invalidate the rbd cache as an experiment.

I would have thought the socket would get created and stay there as
long as kvm is active (since kvm is using librbd).  But even when I 
access the rbd disk from the VM, I don't see any socket created at all.

-- Tom


> -----Original Message-----
> From: Jason Dillaman [mailto:jdillama@xxxxxxxxxx]
> Sent: Thursday, June 30, 2016 6:15 PM
> To: Deneau, Tom <tom.deneau@xxxxxxx>
> Cc: ceph-users <ceph-users@xxxxxxxx>
> Subject: Re:  rbd cache command thru admin socket
> 
> Can you check the permissions on "/var/run/ceph/" and ensure that the user
> your client runs under has permissions to access the directory?
> If the permissions are OK, do you have SElinux or AppArmor enabled and
> enforcing?
> 
> On Thu, Jun 30, 2016 at 5:37 PM, Deneau, Tom <tom.deneau@xxxxxxx> wrote:
> > I was following the instructions in
> >
> > https://www.sebastien-han.fr/blog/2015/09/02/ceph-validate-that-the-rb
> > d-cache-is-active/
> >
> > because I wanted to look at some of the rbd cache state and possibly
> > flush and invalidate it
> >
> > My ceph.conf has
> > [client]
> >         rbd default features = 1
> >         rbd default format = 2
> >         admin socket = /var/run/ceph/$cluster-$type.$id.$pid.$cctid.asok
> >         log file = /var/log/ceph/
> >
> > I have a client only node (no osds) and on that node I ran fio with the
> librbd engine, which worked fine.  But I did not see anything in
> /var/run/ceph on that client node.  Is there something else I have to do?
> >
> > -- Tom Deneau, AMD
> >
> >
> > _______________________________________________
> > ceph-users mailing list
> > ceph-users@xxxxxxxxxxxxxx
> > http://lists.ceph.com/listinfo.cgi/ceph-users-ceph.com
> 
> 
> 
> --
> Jason
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