Re: help with nfs export/mount

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On Sat, Sep 21, 2013 at 07:36:24AM -0700, Jody Gugelhupf wrote:
> but now my syslog and dmesg on nfs serverside is full of these msg'es:

rpcdebug -m rpc -c all

--b.

> 
> Sep 21 16:34:13 fatzo kernel: [8295937.032636] RPC:       Want update, refage=120, age=116
> Sep 21 16:34:21 fatzo kernel: [8295945.056091] RPC:       Want update, refage=120, age=0
> Sep 21 16:34:26 fatzo kernel: [8295950.056027] RPC:       Want update, refage=120, age=5
> Sep 21 16:34:31 fatzo kernel: [8295955.056024] RPC:       Want update, refage=120, age=10
> Sep 21 16:34:36 fatzo kernel: [8295960.056024] RPC:       Want update, refage=120, age=15
> Sep 21 16:34:41 fatzo kernel: [8295965.056095] RPC:       Want update, refage=120, age=20
> Sep 21 16:34:46 fatzo kernel: [8295970.056030] RPC:       Want update, refage=120, age=25
> Sep 21 16:34:51 fatzo kernel: [8295975.056046] RPC:       Want update, refage=120, age=30
> Sep 21 16:35:05 fatzo kernel: [8295989.155466] RPC:       Want update, refage=120, age=44
> Sep 21 16:35:10 fatzo kernel: [8295994.152029] RPC:       Want update, refage=120, age=49
> Sep 21 16:35:15 fatzo kernel: [8295999.152050] RPC:       Want update, refage=120, age=54
> Sep 21 16:35:26 fatzo kernel: [8296010.195221] RPC:       Want update, refage=120, age=65
> Sep 21 16:35:31 fatzo kernel: [8296015.192028] RPC:       Want update, refage=120, age=70
> Sep 21 16:35:47 fatzo kernel: [8296031.235390] RPC:       Want update, refage=120, age=86
> Sep 21 16:35:52 fatzo kernel: [8296036.232029] RPC:       Want update, refage=120, age=91
> Sep 21 16:35:57 fatzo kernel: [8296041.232100] RPC:       Want update, refage=120, age=96
> Sep 21 16:36:08 fatzo kernel: [8296052.275643] RPC:       Want update, refage=120, age=107
> Sep 21 16:36:13 fatzo kernel: [8296057.272027] RPC:       Want update, refage=120, age=112
> Sep 21 16:36:29 fatzo kernel: [8296073.315985] RPC:       Want update, refage=120, age=0
> Sep 21 16:36:34 fatzo kernel: [8296078.312026] RPC:       Want update, refage=120, age=5
> Sep 21 16:36:39 fatzo kernel: [8296083.312096] RPC:       Want update, refage=120, age=10
> Sep 21 16:36:50 fatzo kernel: [8296094.356721] RPC:       Want update, refage=120, age=21
> Sep 21 16:36:55 fatzo kernel: [8296099.356097] RPC:       Want update, refage=120, age=26
> Sep 21 16:37:03 fatzo kernel: [8296107.389078] RPC:       Want update, refage=1800, age=903
> Sep 21 16:37:11 fatzo kernel: [8296115.367365] RPC:       Want update, refage=120, age=42
> Sep 21 16:37:16 fatzo kernel: [8296120.364090] RPC:       Want update, refage=120, age=47
> Sep 21 16:37:21 fatzo kernel: [8296125.364043] RPC:       Want update, refage=120, age=52
> Sep 21 16:37:33 fatzo kernel: [8296136.418063] RPC:       Want update, refage=120, age=63
> Sep 21 16:37:38 fatzo kernel: [8296141.416131] RPC:       Want update, refage=120, age=68
> Sep 21 16:37:54 fatzo kernel: [8296157.441174] RPC:       Want update, refage=120, age=85
> Sep 21 16:37:59 fatzo kernel: [8296162.440067] RPC:       Want update, refage=120, age=90
> Sep 21 16:38:04 fatzo kernel: [8296167.440097] RPC:       Want update, refage=120, age=95
> Sep 21 16:38:15 fatzo kernel: [8296178.501474] RPC:       Want update, refage=120, age=106
> Sep 21 16:38:19 fatzo kernel: [8296182.467950] RPC:       Want update, refage=1800, age=907
> Sep 21 16:38:20 fatzo kernel: [8296183.500042] RPC:       Want update, refage=120, age=111
> Sep 21 16:38:35 fatzo kernel: [8296198.952120] RPC:       Want update, refage=120, age=0
> Sep 21 16:38:40 fatzo kernel: [8296203.952047] RPC:       Want update, refage=120, age=5
> Sep 21 16:38:45 fatzo kernel: [8296208.952030] RPC:       Want update, refage=120, age=10
> Sep 21 16:38:50 fatzo kernel: [8296213.952032] RPC:       Want update, refage=120, age=15
> Sep 21 16:38:55 fatzo kernel: [8296218.952025] RPC:       Want update, refage=120, age=20
> Sep 21 16:39:00 fatzo kernel: [8296223.953579] RPC:       Want update, refage=120, age=20
> tired to find something about this but not much returned, 
> 
> 
> 
> ----- Original Message -----
> From: Jody Gugelhupf <knueffle@xxxxxxxxx>
> To: J. Bruce Fields <bfields@xxxxxxxxxxxx>
> Cc: "linux-nfs@xxxxxxxxxxxxxxx" <linux-nfs@xxxxxxxxxxxxxxx>
> Sent: Saturday, September 21, 2013 12:51:26 PM
> Subject: Re: help with nfs export/mount
> 
> thanks a lot!!!
> 
> I tried the commands you suggested below for further debug and this one:
> cat /proc/net/rpc/nfsd.export/content
> 
> showed me a folder that was first "mount --bind" into one of the exported folders and later it was moved from the original storage location but the "mount --bind" wasn't removed, that caused some sort of error and thus the nfs mounts were not working, once i corrected the original location of that "mount --bind" it all worked :)
> 
> 
> ----- Original Message -----
> From: J. Bruce Fields <bfields@xxxxxxxxxxxx>
> To: Jody Gugelhupf <knueffle@xxxxxxxxx>
> Cc: "linux-nfs@xxxxxxxxxxxxxxx" <linux-nfs@xxxxxxxxxxxxxxx>
> Sent: Thursday, September 19, 2013 5:15:51 PM
> Subject: Re: help with nfs export/mount
> 
> On Thu, Sep 19, 2013 at 07:46:32AM -0700, Jody Gugelhupf wrote:
> > ah ok, i have dropped the "fsid=0" as you had suggested but had still mounted with "sudo mount 192.168.2.3:/ /home/jarvis/Videos/xbmc"
> > though when doing tab completition on cli it does show 
> > ls /home/jarvis/Videos/xbmc/
> > ls /home/jarvis/Videos/xbmc/home
> > 
> > ls /home/jarvis/Videos/xbmc/home/user
> > 
> > ls /home/jarvis/Videos/xbmc/home/user/media
> > 
> > ls /home/jarvis/Videos/xbmc/home/user/media/Series
> > 
> > and then hangs indeed
> 
> That does sound like a kernel or mountd bug.  Possibly it's confused by
> the bind mounts.  Could you post the contents of /proc/self/mounts on
> the server?
> 
> Also, reproduce the hang as above on the client, then as root on the
> server, run:
> 
>     rpcdebug -m rpc -s cache
>     cat /proc/net/auth.unix.ip/content
>     cat /proc/net/rpc/nfsd.fh/content
>     cat /proc/net/rpc/nfsd.export/content
> 
> and post the output.
> 
> Finally if you're up to building the latest nfs-utils and kernel from
> source it would be interesting to know whether the bug persists
> upstream.
> 
> --b.
> 
> > 
> > 
> > 
> > 
> > ----- Original Message -----
> > From: J. Bruce Fields <bfields@xxxxxxxxxxxx>
> > To: Jody Gugelhupf <knueffle@xxxxxxxxx>
> > Cc: "linux-nfs@xxxxxxxxxxxxxxx" <linux-nfs@xxxxxxxxxxxxxxx>
> > Sent: Thursday, September 19, 2013 4:25:35 PM
> > Subject: Re: help with nfs export/mount
> > 
> > On Thu, Sep 19, 2013 at 07:21:04AM -0700, Jody Gugelhupf wrote:
> > > on client side (in order):
> > > 
> > > sudo mount 192.168.2.3:/ /home/jarvis/Videos/xbmc
> > 
> > As I said, if you've dropped the "fsid=0" (which you should) then you
> > should be mounting the real server-side path, not /.
> > 
> > > no error msg, then trying to access the directory:
> > > ls /home/jarvis/Videos/xbmc/home/user/media/Series
> > > the console does not react,
> > 
> > So the mount succeeds, but the "ls" hangs?
> > 
> > --b.
> > 
> > > i open a new console and see again 
> > > Sep 19 14:15:56 darkstar kernel: [61095.429346] nfs: server 192.168.2.3 OK
> > > Sep 19 14:17:01 darkstar kernel: [61280.169706] nfs: server 192.168.2.3 not responding, still trying
> > > 
> > > 
> > > but i also noticed this (didn't see it before)
> > > Sep 19 16:12:53 darkstar rpc.idmapd[576]: nss_getpwnam: name 'user' not found in domain 'localdomain'
> > > 
> > > 
> > > 
> > > ----- Original Message -----
> > > From: J. Bruce Fields <bfields@xxxxxxxxxxxx>
> > > To: Jody Gugelhupf <knueffle@xxxxxxxxx>
> > > Cc: "linux-nfs@xxxxxxxxxxxxxxx" <linux-nfs@xxxxxxxxxxxxxxx>
> > > Sent: Thursday, September 19, 2013 4:08:46 PM
> > > Subject: Re: help with nfs export/mount
> > > 
> > > On Thu, Sep 19, 2013 at 07:03:30AM -0700, Jody Gugelhupf wrote:
> > > > on server side I see in dmesg this:
> > > > [8040437.603605] nfsd: last server has exited, flushing export cache
> > > > [8040439.496016] NFSD: Using /var/lib/nfs/v4recovery as the NFSv4 state recovery directory
> > > > [8040439.496035] NFSD: starting 90-second grace period
> > > > 
> > > > on client side i only see:
> > > > Sep 19 13:27:56 darkstar kernel: [61095.429346] nfs: server 192.168.2.3 OK
> > > > Sep 19 13:31:01 darkstar kernel: [61280.169706] nfs: server 192.168.2.3 not responding, still trying
> > > >  is there a way to further debug?
> > > 
> > > Exactly what commands did you type, and what things happened, in what
> > > order?
> > > 
> > > --b.
> > > 
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