From: "J. Bruce Fields" <bfields@fieldses.org>
To: Rob Landley <rlandley@parallels.com>
Cc: "Kirill A. Shutemov" <kas@openvz.org>,
Trond Myklebust <Trond.Myklebust@netapp.com>,
Neil Brown <neilb@suse.de>, Pavel Emelyanov <xemul@parallels.com>,
linux-nfs@vger.kernel.org,
"David S. Miller" <davem@davemloft.net>,
Al Viro <viro@ZenIV.linux.org.uk>,
containers@lists.linux-foundation.org, netdev@vger.kernel.org,
linux-kernel@vger.kernel.org
Subject: Re: [PATCH v3 00/16] make rpc_pipefs be mountable multiple time
Date: Thu, 20 Jan 2011 10:52:39 -0500 [thread overview]
Message-ID: <20110120155238.GD11588@fieldses.org> (raw)
In-Reply-To: <4D383F60.4080907@parallels.com>
On Thu, Jan 20, 2011 at 07:57:52AM -0600, Rob Landley wrote:
> I've also mounted NFS shares in test environments I never mounted
> rpc_pipefs in. (It's possible that the nfs.mount command was doing so
> for me, and apparently unmounting it again afterwards.) My test
> environment is exporting with the userspace NFS daemon so it's not using
> the kernel cacheing infrastructure.
If you grep for rpc_mkpipe() you'll see it's only used in the idmapping
and rpcsec_gss code; which means you wouldn't need it unless using NFSv4
(which uses idmapping) or rpcsec_gss.
> > There is client dir (nfs/clntX) in rpc_pipefs for every sunrpc client.
> > Both client and server (see fs/nfsd/nfs4callback.c) can create sunrpc
> > client. So we rpc_pipefs on both side.
>
> Ok, both client and server can create instances. And use them to do what?
>
> I understand that the kernel needs to handle RPC calls to service NFS
> requests, what I'm not figuring out is how userspace is involved after
> the initial mount except on the other side of filesystem-agnostic system
> calls.
If you want to see the code on the userland side of the interfaces, see
utils/gssd and utils/idmapd in the nfs-utils code.
--b.
next prev parent reply other threads:[~2011-01-20 15:52 UTC|newest]
Thread overview: 64+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-01-14 13:48 [PATCH v3 00/16] make rpc_pipefs be mountable multiple time Kirill A. Shutemov
2011-01-14 13:48 ` [PATCH v3 01/16] sunrpc: mount rpc_pipefs on initialization Kirill A. Shutemov
2011-01-14 13:49 ` [PATCH v3 02/16] sunrpc: introduce init_rpc_pipefs Kirill A. Shutemov
2011-01-14 13:49 ` [PATCH v3 03/16] sunrpc: push init_rpc_pipefs up to rpc_create() callers Kirill A. Shutemov
2011-01-14 13:49 ` Kirill A. Shutemov
2011-01-14 13:49 ` [PATCH v3 04/16] sunrpc: tag svc_serv with rpc_pipefs mount point Kirill A. Shutemov
2011-01-14 13:49 ` Kirill A. Shutemov
2011-01-14 13:49 ` [PATCH v3 05/16] sunrpc: get rpc_pipefs mount point for svc_serv from callers Kirill A. Shutemov
2011-01-14 13:49 ` [PATCH v3 06/16] lockd: get rpc_pipefs mount point " Kirill A. Shutemov
2011-01-14 13:49 ` Kirill A. Shutemov
2011-01-14 13:49 ` [PATCH v3 07/16] sunrpc: get rpc_pipefs mount point for rpcb_create[_local] " Kirill A. Shutemov
2011-01-14 13:49 ` [PATCH v3 08/16] sunrpc: tag pipefs field of cache_detail with rpc_pipefs mount point Kirill A. Shutemov
2011-01-14 13:49 ` Kirill A. Shutemov
2011-01-14 13:49 ` [PATCH v3 09/16] sunrpc: introduce rpc_pipefs_add_destroy_cb() Kirill A. Shutemov
[not found] ` <1295012954-7769-10-git-send-email-kas-GEFAQzZX7r8dnm+yROfE0A@public.gmane.org>
2011-01-20 11:37 ` Kirill A. Shutemov
2011-01-20 11:37 ` Kirill A. Shutemov
2011-01-20 11:37 ` Kirill A. Shutemov
[not found] ` <1295012954-7769-1-git-send-email-kas-GEFAQzZX7r8dnm+yROfE0A@public.gmane.org>
2011-01-14 13:48 ` [PATCH v3 01/16] sunrpc: mount rpc_pipefs on initialization Kirill A. Shutemov
2011-01-14 13:49 ` [PATCH v3 02/16] sunrpc: introduce init_rpc_pipefs Kirill A. Shutemov
2011-01-14 13:49 ` [PATCH v3 03/16] sunrpc: push init_rpc_pipefs up to rpc_create() callers Kirill A. Shutemov
2011-01-14 13:49 ` [PATCH v3 04/16] sunrpc: tag svc_serv with rpc_pipefs mount point Kirill A. Shutemov
2011-01-14 13:49 ` [PATCH v3 05/16] sunrpc: get rpc_pipefs mount point for svc_serv from callers Kirill A. Shutemov
2011-01-14 13:49 ` [PATCH v3 06/16] lockd: get rpc_pipefs mount point " Kirill A. Shutemov
2011-01-14 13:49 ` [PATCH v3 07/16] sunrpc: get rpc_pipefs mount point for rpcb_create[_local] " Kirill A. Shutemov
2011-01-14 13:49 ` [PATCH v3 08/16] sunrpc: tag pipefs field of cache_detail with rpc_pipefs mount point Kirill A. Shutemov
2011-01-14 13:49 ` [PATCH v3 09/16] sunrpc: introduce rpc_pipefs_add_destroy_cb() Kirill A. Shutemov
2011-01-14 13:49 ` [PATCH v3 10/16] nfs: per-rpc_pipefs dns cache Kirill A. Shutemov
2011-01-14 13:49 ` [PATCH v3 11/16] Export iterate_mounts symbol to be able to use from sunrpc module Kirill A. Shutemov
2011-01-14 13:49 ` [PATCH v3 12/16] sunrpc: introduce get_rpc_pipefs() Kirill A. Shutemov
2011-01-14 13:49 ` [PATCH v3 13/16] nfs: introduce mount option 'rpcmount' Kirill A. Shutemov
2011-01-14 13:49 ` [PATCH v3 14/16] sunrpc: make rpc_pipefs be mountable multiple times Kirill A. Shutemov
2011-01-14 13:49 ` [PATCH v3 15/16] sunrpc: remove global init_rpc_pipefs Kirill A. Shutemov
2011-01-14 13:49 ` [PATCH v3 16/16] Rework get_rpc_pipefs and introduce put_rpc_pipefs() Kirill A. Shutemov
2011-01-17 12:30 ` [PATCH v3 00/16] make rpc_pipefs be mountable multiple time Rob Landley
2011-01-24 23:55 ` Kirill A. Shutemov
2011-01-14 13:49 ` [PATCH v3 10/16] nfs: per-rpc_pipefs dns cache Kirill A. Shutemov
2011-01-14 13:49 ` [PATCH v3 11/16] Export iterate_mounts symbol to be able to use from sunrpc module Kirill A. Shutemov
2011-01-14 13:49 ` Kirill A. Shutemov
2011-01-14 13:49 ` [PATCH v3 12/16] sunrpc: introduce get_rpc_pipefs() Kirill A. Shutemov
2011-01-14 13:49 ` Kirill A. Shutemov
2011-01-14 13:49 ` [PATCH v3 13/16] nfs: introduce mount option 'rpcmount' Kirill A. Shutemov
2011-01-14 13:49 ` [PATCH v3 14/16] sunrpc: make rpc_pipefs be mountable multiple times Kirill A. Shutemov
2011-01-14 13:49 ` Kirill A. Shutemov
2011-01-14 13:49 ` [PATCH v3 15/16] sunrpc: remove global init_rpc_pipefs Kirill A. Shutemov
2011-01-14 13:49 ` [PATCH v3 16/16] Rework get_rpc_pipefs and introduce put_rpc_pipefs() Kirill A. Shutemov
2011-01-14 13:49 ` Kirill A. Shutemov
2011-01-17 12:30 ` [PATCH v3 00/16] make rpc_pipefs be mountable multiple time Rob Landley
[not found] ` <4D343658.1020205-bzQdu9zFT3WakBO8gow8eQ@public.gmane.org>
2011-01-20 11:35 ` Kirill A. Shutemov
2011-01-20 11:35 ` Kirill A. Shutemov
2011-01-20 11:35 ` Kirill A. Shutemov
2011-01-20 13:57 ` Rob Landley
[not found] ` <4D383F60.4080907-bzQdu9zFT3WakBO8gow8eQ@public.gmane.org>
2011-01-20 15:52 ` J. Bruce Fields
2011-01-20 15:52 ` J. Bruce Fields [this message]
[not found] ` <20110120113552.GB24349-oKw7cIdHH8eLwutG50LtGA@public.gmane.org>
2011-01-20 13:57 ` Rob Landley
2011-01-24 23:55 ` Kirill A. Shutemov
2011-01-24 23:55 ` Kirill A. Shutemov
2011-01-24 23:55 ` Kirill A. Shutemov
2011-01-25 0:25 ` J. Bruce Fields
2011-01-25 0:25 ` J. Bruce Fields
[not found] ` <20110124235545.GA793-oKw7cIdHH8eLwutG50LtGA@public.gmane.org>
2011-01-25 0:25 ` J. Bruce Fields
2011-01-25 1:53 ` Rob Landley
2011-01-25 1:53 ` Rob Landley
2011-01-25 1:53 ` Rob Landley
-- strict thread matches above, loose matches on Subject: below --
2011-01-14 13:48 Kirill A. Shutemov
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