[Gluster-users] [Nfs-ganesha-devel] Problems in /usr/libexec/ganesha/dbus-send.sh and ganesha dbus interface when disabling exports from gluster

[Malahal Naineni]

I have no knowledge of dbus-send.sh, is it GLUSTER fsal specific? I
don't see it in ganesha source code at all. I use ganesha_mgr command to
show/delete/remove exports. Can you try it and see if that works?

"ganesha_mgr remove_export 2" should be the correct call in your case.

Regards, Malahal.

Alessandro De Salvo [Alessandro.DeSalvo at roma1.infn.it] wrote:
> Hi,
> when disabling exports from gluster 3.7.1, by using gluster vol set <volume> ganesha.enable off, I always get the following error:
> 
> Error: Dynamic export addition/deletion failed. Please see log file for details
> 
> This message is produced by the failure of /usr/libexec/ganesha/dbus-send.sh, and in fact if I manually perform the command to remove the share I see:
> 
> # dbus-send --print-reply --system --dest=org.ganesha.nfsd /org/ganesha/nfsd/ExportMgr org.ganesha.nfsd.exportmgr.RemoveExport uint16:2
> Error org.freedesktop.DBus.Error.NoReply: Message did not receive a reply (timeout by message bus)
> 
> So, there is a timeout and it fails completely.
> In this case I think there is a bug in /usr/libexec/ganesha/dbus-send.sh, since it blindly deletes the share config if the RemoveExport fails (function check_cmd_status()), but leaves the %include inside ganesha.conf as in the check_cmd_status() there is a runaway condition and the other removal statements are then not executed. I believe the logic should be fixed here, otherwise even a restart of the service will fail due to the bad configuration.
> 
> What’s more worrying is the problem with the dbus. Issuing a DisplayExport before the RemoveExport apparently fixes the problem, so something like this always works:
> 
> # dbus-send --print-reply --system --dest=org.ganesha.nfsd /org/ganesha/nfsd/ExportMgr org.ganesha.nfsd.exportmgr.DisplayExport uint16:2
> # dbus-send --print-reply --system --dest=org.ganesha.nfsd /org/ganesha/nfsd/ExportMgr org.ganesha.nfsd.exportmgr.RemoveExport uint16:2
> 
> So, it’s like the DisplayExport is forcing someway a refresh that is needed by the RemoveExport. Any idea why?
> I’m using the latest version of ganesha 2.2.0, i.e. 2.2.0-3.
> Thanks,
> 
> 	Alessandro
> 
> PS: sorry for reporting so many things in a few days :-)



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