NFS-mounting from a QEMU/KVM guest
This is quite embarrassing, but I'm banging my head against a wall and
hoping other eyes will spot some obvious mistake.
I have an F31 guest (fedora30) running in QEMU/KVM on an F31 host
(Bree). I want to mount a host directory via NFS in the guest. I set
this up a long time ago and it has worked through several Fedora
releases without issue, but in a fit of spring cleaning I did a fresh
install of F31 rather than my usual update, so of course now it doesn't
work. Clearly I did something right back in the day and have now
forgotten what it was.
The guest can ping the host and ping the wider Internet, so basic
connectivity works (this is via a NAT-style connection). The host can
ssh into the guest.
Firewall setup on the host:
[poc@Bree ~]$ firewall-cmd --list-all
home (active)
target: default
icmp-block-inversion: no
interfaces: enp3s0
sources:
services: dhcp dhcpv6-client dns libvirt mdns mountd nfs nfs3 plex rpc-bind rsyncd
samba samba-client ssh
ports:
protocols:
masquerade: no
forward-ports:
source-ports:
icmp-blocks:
rich rules:
And on the guest:
[poc@fedora30 ~]$ sudo firewall-cmd --list-all
home (active)
target: default
icmp-block-inversion: no
interfaces: enp1s0
sources:
services: dhcpv6-client mdns samba-client ssh
ports:
protocols:
masquerade: no
forward-ports:
source-ports:
icmp-blocks:
rich rules:
Guest ip:
[poc@fedora30 ~]$ ip addr
1: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 qdisc noqueue state UNKNOWN group default
qlen 1000
link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00
inet 127.0.0.1/8 scope host lo
valid_lft forever preferred_lft forever
inet6 ::1/128 scope host
valid_lft forever preferred_lft forever
2: enp1s0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc fq_codel state UP
group default qlen 1000
link/ether 52:54:00:ca:07:30 brd ff:ff:ff:ff:ff:ff
inet 192.168.122.156/24 brd 192.168.122.255 scope global dynamic noprefixroute
enp1s0
valid_lft 2893sec preferred_lft 2893sec
inet6 fe80::2e77:5bc1:d19a:6045/64 scope link noprefixroute
valid_lft forever preferred_lft forever
and routing:
[poc@fedora30 ~]$ ip route
default via 192.168.122.1 dev enp1s0 proto dhcp metric 100
192.168.122.0/24 dev enp1s0 proto kernel scope link src 192.168.122.156 metric 100
[poc@Bree ~]$ ping fedora30
PING fedora30 (192.168.122.156) 56(84) bytes of data.
64 bytes from fedora30 (192.168.122.156): icmp_seq=1 ttl=64 time=20.1 ms
...
Exports on the host:
[poc@Bree ~]$ sudo exportfs
/home/Media 192.168.0.0/16
/home/poc/Shared
vm-*
/home/poc/Shared
fedora*
But from the guest:
[poc@fedora30 ~]$ showmount -e bree
clnt_create: RPC: Unable to receive
What am I missing?
poc