getattr ERROR: Request couldn't be completed in time

getattr ERROR: Request couldn't be completed in time

[Matthias Leopold]

hi,

i'm trying to mount a NFS 4 share with "sec=sys" from a NetApp FAS3250 
on a CentOS KVM guest. this doesn't work, the mount doesn't complete and 
hangs.

mount command is:
/bin/mount -v -t nfs -s -o vers=4.1,sec=sys 10.110.96.90:/home /home/cir

what i'm seeing in tcpdump is:

08:36:48.875019 IP 10.110.96.112.2456702824 > 10.110.96.90.2049: 212 
getattr fh 0,1/53
08:36:48.875355 IP 10.110.96.90.2049 > 10.110.96.112.2456702824: reply 
ok 96 getattr ERROR: Request couldn't be completed in time

server: 10.110.96.90
client: 10.110.96.112

status of nfs services:

nfslock: running
rpcbind: running
rpcidmapd: stopped

this happens with a centos 6 _and_ a centos 7 client (both KVM).
NFS 3 mount from the same host don't work either.

other kvm guests (centos 6) on the same physical host can mount the 
share with no problem.

the netapp admin tells me there's "no problem" on his side.
iptables is disabled of course.

###

what could be the problem on my (client) side?
could this be a kvm problem?

kvm host is centos 6.
network mode is "bridge".
network driver is "virtio".

thx for any advice
matthias

Re: getattr ERROR: Request couldn't be completed in time

[J. Bruce Fields]

On Tue, May 31, 2016 at 02:10:14PM +0200, Matthias Leopold wrote:
> hi,
> 
> i'm trying to mount a NFS 4 share with "sec=sys" from a NetApp
> FAS3250 on a CentOS KVM guest. this doesn't work, the mount doesn't
> complete and hangs.
> 
> mount command is:
> /bin/mount -v -t nfs -s -o vers=4.1,sec=sys 10.110.96.90:/home /home/cir
> 
> what i'm seeing in tcpdump is:
> 
> 08:36:48.875019 IP 10.110.96.112.2456702824 > 10.110.96.90.2049: 212
> getattr fh 0,1/53
> 08:36:48.875355 IP 10.110.96.90.2049 > 10.110.96.112.2456702824:
> reply ok 96 getattr ERROR: Request couldn't be completed in time

I guess that's NFS4ERR_DELAY?  (Wireshark would show the details.)

> server: 10.110.96.90
> client: 10.110.96.112
> 
> status of nfs services:
> 
> nfslock: running
> rpcbind: running
> rpcidmapd: stopped
> 
> this happens with a centos 6 _and_ a centos 7 client (both KVM).
> NFS 3 mount from the same host don't work either.
> 
> other kvm guests (centos 6) on the same physical host can mount the
> share with no problem.
> 
> the netapp admin tells me there's "no problem" on his side.

I think that needs to be looked into in more detail.

--b.

> iptables is disabled of course.
> 
> ###
> 
> what could be the problem on my (client) side?
> could this be a kvm problem?
> 
> kvm host is centos 6.
> network mode is "bridge".
> network driver is "virtio".
> 
> thx for any advice
> matthias
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