This is a concept of how the fstab.sys could be implemented. The "trickery"
relies on using /bin/echo (so we can handle octal codes and to guarantee echo
-e is actually functional) and \v as a field separator, which is unlikely to be
ever used in practice...
fstab-sys would consist of cmdline hook:
- producing initqueue/finished check for all the /dev/* stuff
- producing \v separated description of what to fsck later and what to
mount
and pre-pivot hook:
- fscking in parallel per pass
- specially handling xfs (perhaps others ?)
- mounting
If such approach is fine, I'll turn it into usable form, along with
det_fs/wrap_fsck updates.
---
modules.d/95fstab-sys/module-setup.sh | 12 ++++-
modules.d/95fstab-sys/parse-fstab-sys.sh | 59 ++++++++++++++++++++++++++
modules.d/95fstab-sys/pre-pivot-fstab-sys.sh | 45 +++++++++++++++++++
3 files changed, 113 insertions(+), 3 deletions(-)
create mode 100755 modules.d/95fstab-sys/parse-fstab-sys.sh
create mode 100755 modules.d/95fstab-sys/pre-pivot-fstab-sys.sh
diff --git a/modules.d/95fstab-sys/module-setup.sh
b/modules.d/95fstab-sys/module-setup.sh
index 1fbd55b..f514571 100755
--- a/modules.d/95fstab-sys/module-setup.sh
+++ b/modules.d/95fstab-sys/module-setup.sh
@@ -7,12 +7,18 @@ check() {
}
depends() {
+ # echo fs-lib
return 0
}
install() {
+ # will be moved away to fs-lib
+ # dracut_install /sbin/fsck*
+ # type -P e2fsck >/dev/null && dracut_install e2fsck
+ # +xfs stuff
+
dracut_install /etc/fstab.sys
- dracut_install /sbin/fsck*
- type -P e2fsck >/dev/null && dracut_install e2fsck
- inst_hook pre-pivot 00 "$moddir/mount-sys.sh"
+ dracut_install echo
+ inst_hook cmdline 10 "$moddir/parse-fstab-sys.sh"
+ inst_hook pre-pivot 00 "$moddir/pre-pivot-fstab-sys.sh"
}
diff --git a/modules.d/95fstab-sys/parse-fstab-sys.sh
b/modules.d/95fstab-sys/parse-fstab-sys.sh
new file mode 100755
index 0000000..4847766
--- /dev/null
+++ b/modules.d/95fstab-sys/parse-fstab-sys.sh
@@ -0,0 +1,59 @@
+#!/bin/sh
+# -*- mode: shell-script; indent-tabs-mode: nil; sh-basic-offset: 4; -*-
+# ex: ts=8 sw=4 sts=4 et filetype=sh
+
+type getarg >/dev/null 2>&1 || . /lib/dracut-lib.sh
+
+local _dev _mp _fs _opts _dump _pass _rest _fsck
+
+while read _dev _mp _fs _opts _dump _pass _rest; do
+ [ -z "${_dev%%#*}" ] && continue # Skip comment lines
+
+ # handling block: is an overkill, but let's be consistent
+ # a little trickery - we will use \v as a separator to simplify our
+ # life; whole stuff will of course break, if someone actually uses that
+ # in fstab.sys ...
+
+ # parse special stuff
+ _dev=$(/bin/echo -en "$_dev")
+ _mp=$(/bin/echo -en "$_mp")
+ _opts=$(/bin/echo -en "$_opts")
+ _fs=$(/bin/echo -en "$_fs")
+ [ "$_pass" -gt 0 ] && _fsck="$_pass" || _fsck=0
+
+ case "$_dev" in
+ block:LABEL=*|LABEL=*)
+ _dev="${_dev#block:}"
+ _dev="$(echo -n "$_dev" | sed 's,/,\\x2f,g')"
+ _dev="/dev/disk/by-label/${_dev#LABEL=}"
+ ;;
+ block:UUID=*|UUID=*)
+ _dev="${_dev#block:}"
+ _dev="/dev/disk/by-uuid/${_dev#UUID=}"
+ ;;
+ esac
+
+ # allow only actual /dev devices to be waited for and fscked
+ if [ -z "${_dev#/dev/*}" ]; then
+ echo "[ -b \"$_dev\" ] || return 1" >>/tmp/fstab-sys.sh
+ else
+ _fsck=0
+ fi
+
+ # prepare "compiled" fstab we will use later
+ /bin/echo -e "$_dev\v$_mp\v\$_fs\v$_opts" >>/tmp/fstab-sys.compiled
+
+ # export fsck passes
+ # don't bother with printf to handle $_fsck > 9 alignment,
+ # but verify that in module-setup.sh
+ if [ "$_fsck" -gt 0 ]; then
+ /bin/echo "$_dev\v$_fs" >>/tmp/fstab-sys.pass.$_fsck
+ fi
+
+done </etc/fstab.sys
+
+# add initqueue/finished, only if there's something to add though
+if [ -e /tmp/fstab-sys.sh ]; then
+ echo "return 0" >>/tmp/fstab-sys.sh
+ mv /tmp/fstab-sys.sh $hookdir/initqueue/finished/fstab-sys.sh
+fi
diff --git a/modules.d/95fstab-sys/pre-pivot-fstab-sys.sh
b/modules.d/95fstab-sys/pre-pivot-fstab-sys.sh
new file mode 100755
index 0000000..1a4b9b7
--- /dev/null
+++ b/modules.d/95fstab-sys/pre-pivot-fstab-sys.sh
@@ -0,0 +1,45 @@
+#!/bin/sh
+# -*- mode: shell-script; indent-tabs-mode: nil; sh-basic-offset: 4; -*-
+# ex: ts=8 sw=4 sts=4 et filetype=sh
+
+type getarg >/dev/null 2>&1 || . /lib/dracut-lib.sh
+
+local _dev _mp _fs _opts _auto _manual _oldIFS _x
+
+oldIFS="$IFS"
+IFS=$(/bin/echo -ne "\v")
+
+# fsck pass
+_manual=
+for _x in /tmp/fstab-sys.pass.[0-9]; do
+ _auto=
+ while read _dev _fs; do
+ _fs=$(IFS="$oldIFS" det_fs "$_dev" "$_fs" "fstab-sys")
+ if [ $_fs = xfs ]; then
+ # xfs is special, so treat is specially ;)
+ _manual=$(/bin/echo -e "${_manual:+${_manual}\v}$_dev")
+ continue
+ fi
+ _auto=$(/bin/echo -e "${_auto:+${_auto}\v}$_dev")
+ done <$_x
+ # use updated wrap_fsck in full version
+ fsck -M -T $_auto
+done
+
+# special fsck pass for xfs and perhaps others
+for _dev in $_manual; do
+ # use updated wrap_fsck in full version
+ if ! xfs_check "$_dev"; then
+ warn "*** XFS on '$_dev' is damaged, please assist."
+ emergency_shell -n "(Repair filesystem)"
+ fi
+done
+
+# mount pass
+while read _dev _mp _fs _opts; do
+ _fs=$(IFS="$oldIFS" det_fs "$_dev" "$_fs" "fstab-sys")
+ info "Mounting $_dev"
+ mount -v -t "$_fs" -o "$_opts" "$_dev" "$NEWROOT/$_mp" 2>&1 | vinfo
+done </tmp/fstab-sys.compiled
+
+IFS="$_oldIFS"
--
1.7.4.2
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