Date: Tue, 13 Mar 2001 16:51:18 +0900 From: Makoto MATSUSHITA <matusita@jp.FreeBSD.org> To: current@FreeBSD.ORG Subject: Re: swap-backed md-based /tmp to replace mfs-based one Message-ID: <20010313165118S.matusita@jp.FreeBSD.org> In-Reply-To: <20010311151109.A69412@mollari.cthul.hu> References: <20010312.062914.92581299.ume@mahoroba.org> <20010312.062914.92581299.ume@mahoroba.org> <20010311151109.A69412@mollari.cthul.hu>
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kris> We really need to provide a better rc.conf hook for doing this --
kris> expecting people to write their own script just to create a /tmp
kris> is lame.
Here is just an example script (CAUTION: not well-tested) to create a
filesystem/swap with mdconfig(8). This script support not only '/tmp
by mdconfig(8)', but also replaces 'swapfile' variable of rc.conf with
more generic way.
Sorry no diffs for rc.conf(5) nor any comments of this script, but
seeing is believing:)
-- -
Makoto `MAR' MATSUSHITA
#!/bin/sh
#
# mdconfig(8) knob for /etc/rc
#
# Example:
# mdconfig_filesystems='tmp swap'
#
# mdconfig_tmp_type='swap'
# mdconfig_tmp_size='32M'
# mdconfig_tmp_newfs_enable='YES'
# mdconfig_tmp_newfs_flags=''
# mdconfig_tmp_tunefs_enable='YES'
# mdconfig_tmp_tunefs_flags='-n enable'
# mdconfig_tmp_dir='/tmp'
# mdconfig_tmp_mode='1777'
# mdconfig_tmp_owner='root:wheel'
#
# mdconfig_swap_type="vnode"
# mdconfig_swap_file="/swapfile"
# mdconfig_swap_dir="swap"
#
# Note:
# - No support of 'mdconfig -u unit'.
# - No error checking of mdconfig(8).
#
for mdfs in ${mdconfig_filesystems}; do
eval _type=\$mdconfig_${mdfs}_type
eval _size=\$mdconfig_${mdfs}_size
eval _file=\$mdconfig_${mdfs}_file
eval _flags=\$mdconfig_${mdfs}_flags
eval _newfs_enable=\$mdconfig_${mdfs}_newfs_enable
eval _newfs_flags=\$mdconfig_${mdfs}_newfs_flags
eval _tunefs_enable=\$mdconfig_${mdfs}_tunefs_enable
eval _tunefs_flags=\$mdconfig_${mdfs}_tunefs_flags
eval _dir=\$mdconfig_${mdfs}_dir
eval _mode=\$mdconfig_${mdfs}_mode
eval _owner=\$mdconfig_${mdfs}_owner
case ${_type} in
[Ss][Ww][Aa][Pp])
_args="-t swap -s ${_size}"
;;
[Vv][Nn][Oo][Dd][Ee])
_args="-t vnode -f ${_file}"
;;
[Mm][Aa][Ll][Ll][Oo][Cc])
_args="-t malloc -s ${size}"
;;
esac
_mddev=`mdconfig -a ${_args} ${_flags}`
case ${_newfs_enable} in
[Yy][Ee][Ss])
disklabel -r -w ${_mddev} auto
newfs ${_newfs_flags} /dev/${_mddev}c >/dev/null 2>&1
;;
*)
;;
esac
case ${_tunefs_enable} in
[Yy][Ee][Ss])
tunefs ${_tunefs_flags} /dev/${_mddev}c >/dev/null 2>&1
;;
*)
;;
esac
case ${_dir} in
[Ss][Ww][Aa][Pp])
swapon /dev/${_mddev}
;;
*)
if [ ! -d ${_dir} ]; then
mkdir -p ${_dir}
fi
mount /dev/${_mddev}c ${_dir}
if [ -n "${_mode}" ]; then
chmod ${_mode} ${_dir}
fi
if [ -n "${_owner}" ]; then
chown ${_owner} ${_dir}
fi
;;
esac
done
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