NFS help

[dcalvache]

I was looking at openvz forums and wiki and i can find a way to make a mount of NFS permanent in a VE. In fisical machines is easy as we can configure this in /etc/fstab, but in a Ve i dont know how it is posible.

Any idea?

 

[Nemesiz]

Well, in your place i would try to mount NFS to /var/lib/vz/private/VID/mount-point

 

[dcalvache]

Ty for the answer, but that i need is to mount inside the virtual machine to access the NFS from the virtual machine.

 

[Nemesiz]

I don`t know how you try but:

1. [host]# umount /dev/sda1
2. [host]# mount /dev/sda1 /var/lib/vz/root/101/boot
3. [guest]# # ls -la /boot/

total 16604
drwxr-xr-x 4 root root 1024 Mar 24 09:34 .
drwxr-xr-x 20 root root 4096 Apr 1 06:25 ..
-rw-r--r-- 1 root root 1224980 Jan 14 11:00 System.map-2.6.24-2-pve
-rw-r--r-- 1 root root 83337 Jan 14 11:00 config-2.6.24-2-pve
drwxr-xr-x 2 root root 1024 Mar 24 09:35 grub
-rw-r--r-- 1 root root 13451203 Jan 14 11:01 initrd.img-2.6.24-2-pve
drwx------ 2 root root 1024 Mar 30 16:06 lost+found
-rw-r--r-- 1 root root 94760 Mar 19 2006 memtest86+.bin
-rw-r--r-- 1 root root 2066528 Jan 14 11:00 vmlinuz-2.6.24-2-pve

4. [host] # umount /dev/sda1
5. [guest] # ls -la /boot/

total 8
drwxr-xr-x 2 root root 4096 Dec 4 09:22 .
drwxr-xr-x 20 root root 4096 Apr 1 06:25 ..


Sorry for my previously mistake

/var/lib/vz/private/VID/mount-point - wrong
/var/lib/vz/root/VID/mount-point - correct

 

[dcalvache]

YEs, this can match with my problem, then all i need is to include the mount in Fstab of the host to make it permanent.


Lots of thanks, ill try tomorrow in the work.

Again Lots of thanks

 

[Nemesiz]

all i need is to include the mount in Fstab of the host to make it permanent.

I suggest to make some script and mount NFS only after VM has started.

If you try to mount before VM :
mount /dev/sda1 /var/lib/vz/root/101/boot
mount: mount point /var/lib/vz/root/101/boot does not exist

If you create a directory /var/lib/vz/root/101/boot and then mount NFS and start VM :
/var/lib/vz/root/101/boot - empty dir

So first you have to start VM and then mount NFS.

 

[tom]

see also http://www.proxmox.com/forum/showthread.php?p=4540#poststop

 

[dcalvache]

Ty tom for the answer, but i just managed to get a diferent solution that works for me, i think ...


I write down my solution:

TO USE PERSISTENT NFS SHARE ON VE.


1.- install nfs-common on both host and guest
2.- modify CT to accept NFS. ex.

vzctl set 101 --features "nfs:on" --save

3.- restart CT.

vzctl restart 101

4.- create a script that invoques the mount and umount, like this:

store.sh

#! /bin/sh
### BEGIN INIT INFO
### END INIT INFO

. /lib/init/vars.sh
. /lib/lsb/init-functions


case "$1" in
    start)
        mount -t nfs 10.4.3.87:/home/shares /home/nfs
        ;;
    restart|reload|force-reload)
        echo "Error: argument '$1' not supported" >&2
        exit 3
        ;;
    stop)
        /etc/init.d/nfs-common restart
        umount /home/nfs
        ;;
    *)
        echo "Usage: $0 start|stop" >&2
        exit 3
        ;;
esac

and save it in /etc/init.d/
modify to make it executable

5 .- and at last, fill the runlevels to load/unload the script, something like this :

update-rc.d store.sh defaults 95 95

Thank you all guys to make me to meet this solution, if you see something wrong, please told me.

 

[dietmar]

Ty 4.- create a script that invoques the mount and umount, like this:

or simply use /etc/fstab inside the CT?

 

[dcalvache]

Ohh i was thinking that in a VE isn´t posible to use Fstab

Sorry for my big mistake.