The following reply was made to PR misc/149831; it has been noted by GNATS.
From: Kenneth Vestergaard <k...@binarysolutions.dk>
To: bug-follo...@freebsd.org,
k...@binarysolutions.dk
Cc:
Subject: Re: misc/149831: [PATCH] add support to /etc/rc.d/jail for delegating
ZFS-filesystems to jails
Date: Fri, 20 Aug 2010 16:03:16 +0200
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Improved patch - it is necessary to get a stable jail-id before
launching the jail, since the delegated filesystems need to be
delegated before launching /etc/rc.
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--- src/etc/rc.d/jail.orig 2010-08-19 12:39:01.000000000 +0200
+++ src/etc/rc.d/jail 2010-08-20 15:57:07.508674101 +0200
@@ -41,6 +41,7 @@
eval _ip=\"\$jail_${_j}_ip\"
eval _interface=\"\${jail_${_j}_interface:-${jail_interface}}\"
eval _exec=\"\$jail_${_j}_exec\"
+ eval _delegate_path=\"\$jail_${_j}_delegate_path\"
i=0
while : ; do
@@ -132,6 +133,7 @@
debug "$_j procdir: $_procdir"
debug "$_j ruleset: $_ruleset"
debug "$_j fstab: $_fstab"
+ debug "$_j delegate_path: $_delegate_path"
i=0
while : ; do
@@ -635,8 +637,23 @@
i=$((i + 1))
done
- eval ${_setfib} jail ${_flags} -i ${_rootdir} ${_hostname} \
- \"${_addrl}\" ${_exec_start} > ${_tmp_jail} 2>&1
+ # create jail with 'persist', so we can get a jid before
starting it,
+ # which is needed if we need to delegate any zfs-filesystems to
it.
+ jail -i -c name=${_jail} path=${_rootdir} persist >
${_tmp_jail} 2>&1
+ _jail_id=$(head -1 ${_tmp_jail})
+ echo started jail ${_jail} with id ${_jail_id}
+
+ if [ ! -z "${_delegate_path}" ] ; then
+ jail -m jid=${_jail_id} allow.mount=1
+ /sbin/zfs get -s local -rH -o name,value jailed
${_delegate_path} | \
+ /usr/bin/awk '$2 == "on" { print $1 }' | \
+ /usr/bin/xargs -I % /sbin/zfs jail ${_jail_id} %
+ fi
+
+ eval ${_setfib} jail ${_flags} -m \
+ jid=${_jail_id} \
+ host.hostname=${_hostname} \
+ ip4.addr=\"${_addrl}\" command=${_exec_start} 2>&1
if [ "$?" -eq 0 ] ; then
_jail_id=$(head -1 ${_tmp_jail})
@@ -669,6 +686,7 @@
echo " cannot start jail \"${_jail}\": "
tail +2 ${_tmp_jail}
fi
+ jail -m jid=${_jail_id} nopersist # remove 'persist' set at
create-time
rm -f ${_tmp_jail}
done
rmdir ${_tmp_dir}
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