Re: [REGRESSION] 8f70e95f9f4159184f557 causes mount failure with EGAIN

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On Wed, 2011-03-30 at 17:12 -0400, Bryan Schumaker wrote:
> On 03/30/2011 03:32 PM, Eric Paris wrote:
> > $ git bisect good
> > 8f70e95f9f4159184f557a1db60c909d7c1bd2e3 is the first bad commit
> > commit 8f70e95f9f4159184f557a1db60c909d7c1bd2e3
> > Author: Bryan Schumaker <bjschuma@xxxxxxxxxx>
> > Date:   Thu Mar 24 17:12:31 2011 +0000
> > 
> >     NFS: Determine initial mount security
> >     
> >     When sec=<something> is not presented as a mount option,
> >     we should attempt to determine what security flavor the
> >     server is using.
> >     
> >     Signed-off-by: Bryan Schumaker <bjschuma@xxxxxxxxxx>
> >     Signed-off-by: Trond Myklebust <Trond.Myklebust@xxxxxxxxxx>
> > 
> > Using a linux-next kernel for the last 2 days I have been unable to
> > mount exports from my RHEL6 server.  mount(2) returned EAGAIN.  Turned
> 
> Thanks for letting me know.  What does your exports file look like?

# cat /etc/exports
/		127.0.0.1(fsid=0)
/export		*(rw,fsid=1,all_squash,anonuid=500,anongid=500)

The client fstab looks like:
paris.rdu.redhat.com:/export/ /storage nfs tcp,noatime,nodiratime,noauto,users,exec,suid 0 0

> 
> Bryan
> 
> > up debugging (thanks jlayton) and got:
> > 
> >         [ 1732.795056] NFS: nfs mount opts='tcp,vers=4,addr=10.11.231.241,clientaddr=10.11.231.191'
> >         [ 1732.798079] NFS:   parsing nfs mount option 'tcp'
> >         [ 1732.800210] NFS:   parsing nfs mount option 'vers=4'
> >         [ 1732.802324] NFS:   parsing nfs mount option 'addr=10.11.231.241'
> >         [ 1732.804477] NFS:   parsing nfs mount option 'clientaddr=10.11.231.191'
> >         [ 1732.805790] NFS: MNTPATH: '/export/'
> >         [ 1732.806663] --> nfs4_try_mount()
> >         [ 1732.807459] --> nfs4_create_server()
> >         [ 1732.808301] --> nfs4_init_server()
> >         [ 1732.809136] --> nfs4_set_client()
> >         [ 1732.809898] --> nfs_get_client(paris.rdu.redhat.com,v4)
> >         [ 1732.811122] NFS: get client cookie (0xffff880039cfd9e8/0xffff88003b889000)
> >         [ 1732.813771] NFS: Callback listener port = 36700 (af 2)
> >         [ 1732.814931] NFS: Callback listener port = 60202 (af 10)
> >         [ 1732.816199] --> nfs_get_client() = ffff880039cfd9e8 [new]
> >         [ 1732.817356] <-- nfs4_set_client() = 0 [new ffff880039cfd9e8]
> >         [ 1732.818587] <-- nfs4_init_server() = 0
> >         [ 1732.819476] --> nfs4_get_rootfh()
> >         [ 1732.820282] encode_compound: tag=
> >         [ 1732.822070] encode_compound: tag=
> >         [ 1732.822937] nfs4_get_rootfh: getroot error = 11
> >         [ 1732.823982] <-- nfs4_get_rootfh() = -11
> >         [ 1732.824880] --> nfs_free_server()
> >         [ 1732.846219] --> nfs_put_client({1})
> >         [ 1732.847888] --> nfs_free_client(4)
> >         [ 1732.850236] NFS: releasing client cookie (0xffff880039cfd9e8/0xffff88003b889000)
> >         [ 1732.853726] <-- nfs_free_client()
> >         [ 1732.854505] <-- nfs_free_server()
> >         [ 1732.855274] <-- nfs4_create_server() = error -11
> >         [ 1732.856187] <-- nfs4_try_mount() = -11 [error]
> > 
> > Bisected and got the commit listed above.
> > 
> 


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