Udev rules set a /dev/root symlink to the real root and add
a mount script to /mount/. This enables the proper use of pre-mount
scripts and prevents mount being killed by a udev timeout.
---
modules.d/40network/net-genrules.sh | 8 ++++----
modules.d/95debug/install | 2 +-
modules.d/95iscsi/iscsiroot | 2 +-
modules.d/95nbd/nbdroot | 7 ++++---
modules.d/95nfs/nfsroot | 23 +++++++++++++----------
modules.d/95rootfs-block/block-genrules.sh | 8 ++++----
modules.d/99base/init | 9 ++++++++-
7 files changed, 35 insertions(+), 24 deletions(-)
diff --git a/modules.d/40network/net-genrules.sh b/modules.d/40network/net-genrules.sh
index f843c53..dbd0474 100755
--- a/modules.d/40network/net-genrules.sh
+++ b/modules.d/40network/net-genrules.sh
@@ -19,20 +19,20 @@ fix_bootif() {
BOOTIF=$(getarg 'BOOTIF=')
if [ -n "$BOOTIF" ] ; then
BOOTIF=$(fix_bootif "$BOOTIF")
- printf 'ACTION=="add", SUBSYSTEM=="net", ATTR{address}=="%s", RUN+="/sbin/initqueue /sbin/ifup $env{INTERFACE}"\n' "$BOOTIF"
+ printf 'ACTION=="add", SUBSYSTEM=="net", ATTR{address}=="%s", RUN+="/sbin/ifup $env{INTERFACE}"\n' "$BOOTIF"
# If we have to handle multiple interfaces, handle only them.
elif [ -n "$IFACES" ] ; then
for iface in $IFACES ; do
- printf 'ACTION=="add", SUBSYSTEM=="net", KERNEL=="%s", RUN+="/sbin/initqueue /sbin/ifup $env{INTERFACE}"\n' "$iface"
+ printf 'ACTION=="add", SUBSYSTEM=="net", KERNEL=="%s", RUN+="/sbin/ifup $env{INTERFACE}"\n' "$iface"
done
# Default: We don't know the interface to use, handle all
else
- printf 'ACTION=="add", SUBSYSTEM=="net", RUN+="/sbin/initqueue /sbin/ifup $env{INTERFACE}"\n'
+ printf 'ACTION=="add", SUBSYSTEM=="net", RUN+="/sbin/ifup $env{INTERFACE}"\n'
fi
# Udev event 'online' only gets fired from ifup/dhclient-script.
# No special rules required
- printf 'ACTION=="online", SUBSYSTEM=="net", RUN+="/sbin/initqueue /sbin/netroot $env{INTERFACE}"\n'
+ printf 'ACTION=="online", SUBSYSTEM=="net", RUN+="/sbin/netroot $env{INTERFACE}"\n'
} > /etc/udev/rules.d/60-net.rules
diff --git a/modules.d/95debug/install b/modules.d/95debug/install
index 33a724d..6d4f089 100755
--- a/modules.d/95debug/install
+++ b/modules.d/95debug/install
@@ -1,3 +1,3 @@
#!/bin/bash
-dracut_install ln ps grep more dmesg cat rm strace free showmount
+dracut_install ln ps grep more cat rm strace free showmount
dracut_install ping netstat rpcinfo
diff --git a/modules.d/95iscsi/iscsiroot b/modules.d/95iscsi/iscsiroot
index 8ee7cbc..316d8f4 100755
--- a/modules.d/95iscsi/iscsiroot
+++ b/modules.d/95iscsi/iscsiroot
@@ -122,7 +122,7 @@ echo "InitiatorName='$iscsi_initiator'" > /dev/.initiatorname.iscsi
# FIXME $iscsi_protocol??
-echo "iscsi_lun=$iscsi_lun . /bin/mount-lun.sh " > /mount/iscsi.sh
+echo "iscsi_lun=$iscsi_lun . /bin/mount-lun.sh " > /mount/01-$$-iscsi.sh
iscsistart -i $iscsi_initiator -t $iscsi_target_name \
-g $iscsi_target_group -a $iscsi_target_ip \
diff --git a/modules.d/95nbd/nbdroot b/modules.d/95nbd/nbdroot
index ad2e906..ecac211 100755
--- a/modules.d/95nbd/nbdroot
+++ b/modules.d/95nbd/nbdroot
@@ -93,9 +93,10 @@ done
# If we didn't get a root= on the command line, then we need to
# add the udev rules for mounting the nbd0 device
if [ ! -e /etc/udev/rules.d/99-mount.rules ]; then
- printf 'KERNEL=="%s", RUN+="/sbin/initqueue /bin/mount -t %s -o %s %s %s"\n' \
- nbd0 "$nbdfstype" "$fsopts" /dev/nbd0 "$NEWROOT" \
- > /etc/udev/rules.d/99-mount.rules
+ printf 'KERNEL=="nbd0", SYMLINK+="root"\n'> /etc/udev/rules.d/99-mount.rules
+ printf '/bin/mount -t %s -o %s %s %s\n' \
+ "$nbdfstype" "$fsopts" /dev/nbd0 "$NEWROOT" \
+ > /mount/01-$$-nbd.sh
fi
nbd-client $preopts "$nbdserver" "$nbdport" /dev/nbd0 $opts || exit 1
diff --git a/modules.d/95nfs/nfsroot b/modules.d/95nfs/nfsroot
index 0da8ee3..5f5b08f 100755
--- a/modules.d/95nfs/nfsroot
+++ b/modules.d/95nfs/nfsroot
@@ -142,14 +142,17 @@ if [ "$nfs" = "nfs4" ]; then
[ -z "$(pidof rpc.idmapd)" ] && rpc.idmapd
# XXX Should we loop here?
- exec mount -t nfs4 -o$options${nfslock+,$nfslock} \
- $server:$path $NEWROOT
-fi
-
-# NFSv{2,3} doesn't support using locks as it requires a helper to transfer
-# the rpcbind state to the new root
-[ "$nfslock" = "lock" ] && \
- warn "Locks unsupported on NFSv{2,3}, using nolock" 1>&2
+ echo mount -t nfs4 -o$options${nfslock+,$nfslock} \
+ $server:$path $NEWROOT > /mount/01-$$-nfs4.sh
+ [ -e /dev/root ] || >/dev/root
+else
+ # NFSv{2,3} doesn't support using locks as it requires a helper to transfer
+ # the rpcbind state to the new root
+ [ "$nfslock" = "lock" ] && \
+ warn "Locks unsupported on NFSv{2,3}, using nolock" 1>&2
-# XXX Should we loop here?
-exec mount -t nfs -o$options${options:+,}nolock $server:$path $NEWROOT
+ # XXX Should we loop here?
+ echo mount -t nfs -o$options${options:+,}nolock $server:$path $NEWROOT \
+ > /mount/01-$$-nfs.sh
+ [ -e /dev/root ] || >/dev/root
+fi
diff --git a/modules.d/95rootfs-block/block-genrules.sh b/modules.d/95rootfs-block/block-genrules.sh
index 2706dbb..5d1a669 100644
--- a/modules.d/95rootfs-block/block-genrules.sh
+++ b/modules.d/95rootfs-block/block-genrules.sh
@@ -1,8 +1,8 @@
if [ "${root%%:*}" = "block" ]; then
(
- printf 'KERNEL=="%s", RUN+="/sbin/initqueue /bin/mount -t %s -o %s %s %s"\n' \
- ${root#block:/dev/} "$fstype" "$rflags" "${root#block:}" "$NEWROOT"
- printf 'SYMLINK=="%s", RUN+="/sbin/initqueue /bin/mount -t %s -o %s %s %s"\n' \
- ${root#block:/dev/} "$fstype" "$rflags" "${root#block:}" "$NEWROOT"
+ printf 'KERNEL=="%s", SYMLINK+="root"\n' \
+ ${root#block:/dev/}
+ printf 'SYMLINK=="%s", SYMLINK+="root"\n' \
+ ${root#block:/dev/}
) >> /etc/udev/rules.d/99-mount.rules
fi
diff --git a/modules.d/99base/init b/modules.d/99base/init
index b49ba21..bb20220 100755
--- a/modules.d/99base/init
+++ b/modules.d/99base/init
@@ -22,8 +22,11 @@ do_initqueue()
# bail out, if we have mounted the root filesystem
[ -d "$NEWROOT/proc" ] && break;
+ # check if root can be mounted
+ [ -e /dev/root ] && break;
+
if [ $UDEVVERSION -ge 143 ]; then
- udevadm settle --exit-if-exists=/initqueue/work
+ udevadm settle --exit-if-exists=/initqueue/work --exit-if-exists=/dev/root
else
udevadm settle --timeout=30
fi
@@ -33,8 +36,12 @@ do_initqueue()
for job in /initqueue/*.job; do
. $job
rm -f $job
+
# bail out, if we have mounted the root filesystem
[ -d "$NEWROOT/proc" ] && break;
+
+ # check if root can be mounted
+ [ -e /dev/root ] && break;
done
done
}
--
1.6.2.5
--
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