[Libguestfs] P2Vs seem to require a very robust Ethernet

[Greg Scott]

Trying a P2V again, this time using a physical Fedora system for the NFS RHEV Export domain instead of the Storagetek NFS server.  Everything else is the same.  Same source server, same conversion server, same v2v and p2v versions for now.  The only variable different is the RHEV Export NFS server.  

Nothing is ever simple.  For our new F16 NFS server, with the new systemd, the startup rules have changed.  For anyone else who needs to use an F16 system as an NFS server for RHEV exports or maybe ISOs, here are some notes.  YMMV, but this worked for me.  Thanks to several forums for the raw materials that went into the notes below.

- Greg

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First things first.  We need a usable text editor.  

yum install nano

Now we should change selinux to "permissive".

[root at IT etc]# cd /etc/selinux
[root at IT selinux]# ls
config  restorecond.conf  restorecond_user.conf  semanage.conf  targeted
[root at IT selinux]# nano config
[root at IT selinux]# more config
# This file controls the state of SELinux on the system.
# SELINUX= can take one of these three values:
#       enforcing - SELinux security policy is enforced.
#       permissive - SELinux prints warnings instead of enforcing.
#       disabled - SELinux is fully disabled.
SELINUX=permissive
# SELINUXTYPE= type of policy in use. Possible values are:
#       targeted - Only targeted network daemons are protected.
#       strict - Full SELinux protection.
SELINUXTYPE=targeted
[root at IT selinux]#

Now install the packages we need for NFS.

yum install nfs-utils (This should pull in all the dependencies including rpcbind.)
yum install system-config-nfs
yum install system-config-nfs-docs

Set them to start at boot time.  And open up all the firewall rules.

systemctl enable rpcbind.service
systemctl enable nfs-server.service
systemctl disable iptables.service

Start everything up for now.

systemctl stop iptables.service
systemsctl start rpcbind.service
systemctl start nfs-server.service

And now we can set up our NFS share and edit /etc/exports.  Where is the best place to put the NFS share we want?

[root at IT /]# df -h
Filesystem                 Size  Used Avail Use% Mounted on
rootfs                      50G  2.7G   47G   6% /
devtmpfs                   1.5G     0  1.5G   0% /dev
tmpfs                      1.5G  240K  1.5G   1% /dev/shm
tmpfs                      1.5G   40M  1.4G   3% /run
/dev/mapper/vg_it-lv_root   50G  2.7G   47G   6% /
tmpfs                      1.5G   40M  1.4G   3% /run
tmpfs                      1.5G     0  1.5G   0% /sys/fs/cgroup
tmpfs                      1.5G     0  1.5G   0% /media
/dev/sde3                  485M   56M  404M  13% /boot
/dev/mapper/vg_it-lv_home  212G  252M  201G   1% /home
[root at IT /]# ls /home
fredy  lost+found
[root at IT /]# mkdir /home/RHEVexports
[root at IT /]# chown 36.36 /home/RHEVexports
[root at IT /]# ls -al /home total 32
drwxr-xr-x.  5 root  root   4096 Dec  5 20:12 .
dr-xr-xr-x. 21 root  root   4096 Dec  5 11:49 ..
drwx------. 25 fredy fredy  4096 Dec  5 11:49 fredy
drwx------.  2 root  root  16384 Nov 29 06:32 lost+found
drwxr-xr-x.  2    36    36  4096 Dec  5 20:12 RHEVexports

[root at IT etc]# nano /etc/exports
[root at IT etc]# more /etc/exports
/home/RHEVexports                       *(rw,sync,nohide,no_root_squash)

[root at IT etc]# exportfs -av
exporting *:/home/RHEVexports
[root at IT etc]#

We decided /home/RHEVexports seems like a reasonable location.  And now it's mountable from a different system:

[root at Fedora16-64P2V log]# mkdir /mnt/stuff
[root at Fedora16-64P2V log]# mount -t nfs 175.10.0.95:/home/RHEVexports /mnt/stuff
[root at Fedora16-64P2V log]# cd /mnt/stuff
[root at Fedora16-64P2V stuff]# touch a.a
[root at Fedora16-64P2V stuff]# rm a.a
rm: remove regular empty file `a.a'? y
[root at Fedora16-64P2V stuff]# cd /
[root at Fedora16-64P2V /]# umount /mnt/stuff [root at Fedora16-64P2V /]#

Should be ready to use as the RHEV-M export domain now.