Bind mounts

2017-11-20T13:17:45Z

Websavers: Better wording to clarify that the additional script is not a replacement for the one above, but rather needs to be run first.

Bind mounts can be used to make directories on the hardware node visible to the container.

This is how you can make host system's <code>/mnt/disk</code> directory available to a container 777:
<source lang="bash">
CTID=777

echo '#!/bin/bash
. /etc/vz/vz.conf
. ${VE_CONFFILE}
SRC=/mnt/disk
DST=/mnt/disk
if [ ! -e ${VE_ROOT}${DST} ]; then mkdir -p ${VE_ROOT}${DST}; fi
mount -n -t simfs ${SRC} ${VE_ROOT}${DST} -o ${SRC}
' > /etc/vz/conf/${CTID}.mount

chmod +x /etc/vz/conf/${CTID}.mount
</source>

If you want read-only mount, add <code>-r</code> option to mount command.

{{Note|When specifying destination directory, always use /vz/root/ or ${VE_ROOT} env. variable <nowiki>(avoid using /vz/private)</nowiki>}}
{{Note|When binding directories from one container to another, make sure you have proper boot order (See [[Man/vzctl.8|BOOTORDER]] param.)}}

'''Instruction above will not work on OpenVZ 7 until you run the script below to enable Bind mounts:'''

<source lang="bash">
cat <<'EOF' > /etc/vz/conf/vps.mount
#!/bin/bash
. ${VE_CONFFILE}
VE_MOUNT=$(echo ${VE_CONFFILE} | sed 's/\.conf$/.mount/')
[ -x ${VE_MOUNT} ] && . ${VE_MOUNT}
exit 0
EOF

chmod +x /etc/vz/conf/vps.mount
</source>

== See also ==
* {{Man|vzctl|8}} (ACTION SCRIPTS section)
* [[NFS]]
* [[FUSE]]
* [[Mounting filesystems]]

[[Category:HOWTO]]

OpenVZ Virtuozzo Containers Wiki - User contributions [en]

Bind mounts