automagic bind mounts

C

c0mputerking

Renowned Member
Oct 5, 2011
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I would like to mount a host mount point on a guest os eery tiime it is restarted have found some scripts by googling around, and on these forums here http://wiki.openvz.org/Bind_mounts and http://newpush.com/2010/02/openvz-shared-directory-mounting-from-host-to-guest-systems/ here.

I have manual mounting working like this but of course i need this to stick each time the virtual machine is restarted.

mount --bind /usr/local/backups/backuppc /var/lib/vz/root/202/var/lib/backuppc

Here is a preposed 202.mount script edited to my needs think??? (im confused about the variables or if i need them) for one machine will it work and where do i put it?

#!/bin/bash
source /etc/vz/vz.conf
source ${VE_CONFFILE}
echo "Starting ${VEID}.mount..."
mount --bind /usr/local/backups/backuppc ${VE_ROOT}/var/lib/backuppc
echo "...${VEID}.mount complete"

Also this author suggests a 202.umount script
#!/bin/bash
source /etc/vz/vz.conf
source ${VE_CONFFILE}
echo "Starting ${VEID}.umount..."
umount ${VE_ROOT}/var/lib/backuppc
echo "...${VEID}.umount done"

PS i have started a post here http://computerking.ca/node/611 about making this work with a ct and backuppc here if anyone is interested hoever it is not finished yet. I will probably make it a seperate blog in the end too
 
To answer my own post i believe that the scripts go in /var/pve/conf havent had at chance to try this out yet but hopefully in the next couple of days
 
you need to save the CTID.mount scripts in /etc/pve/nodes/<yournodename>/openvz/

in this folder you have for example a 101.conf and then you can add a 101.mount script.
 
Thanks Tom i just got it working tested a reboot of host and the guest thing get mounted and unmounted correctly. I also just finished creating a clever post in this thread with my ugly scripts (not sure how to get variables working or if proxmox/openvz even uses them) however i must have pressed a wrong button somewhere as i do not see my clever post here now.

Anyways to summarize my post that got lost i managed to get things working i put these scripts in /var/vz/conf/202.mount
#!/bin/bash
source /etc/vz/vz.conf
#source ${VE_CONFFILE}
#echo "Starting ${VEID}.mount..."
echo "Starting 202.mount..."
#mount --bind /usr/local/backups/backuppc ${VE_ROOT}/var/lib/backuppc
mount --bind /usr/local/backups/backuppc /var/lib/vz/root/202/var/lib/backuppc
echo "...202.mount complete"

and /var/vz/conf/202.umount
#!/bin/bash
source /etc/vz/vz.conf
source ${VE_CONFFILE}
echo "Starting ${VEID}.umount..."
umount ${VE_ROOT}/var/lib/backuppc
echo "...${VEID}.umount done"

However i have taken your advice and moved the scripts to the more correct location of /etc/pve/nodes/<yournodename>/openvz/ to my suprise they were already there? must be an link or something?

mv 202.mount 202.umount /etc/pve/nodes/sun/openvz/
mv: `202.mount' and `/etc/pve/nodes/sun/openvz/202.mount' are the same file
mv: `202.umount' and `/etc/pve/nodes/sun/openvz/202.umount' are the same file

For testing what log to i watch to see these get mounted? /var/log/vzctr.log

As always thank you very much for your help
 
Last edited:
opps i have my umount script wrong it is now this
#!/bin/bash
source /etc/vz/vz.conf
#source ${VE_CONFFILE}
echo "Starting 202.umount..."
#umount ${VE_ROOT}/var/lib/backuppc
umount /var/lib/vz/root/202/var/lib/backuppc
#echo "...${VEID}.umount done"
echo "...202.umount done"
~
 
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