init now has the following points to inject scripts:
/cmdline/*.sh
scripts for command line parsing
/pre-udev/*.sh
scripts to run before udev is started
/pre-trigger/*.sh
scripts to run before the main udev trigger is pulled
/initqueue/*.sh
runs in parallel to the udev trigger
Udev events can add scripts here with /sbin/initqueue.
If /sbin/initqueue is called with the "--onetime" option, the script
will be removed after it was run.
If /initqueue/work is created and udev >= 143 then this loop can
process the jobs in parallel to the udevtrigger.
If the udev queue is empty and no root device is found or no root
filesystem was mounted, the user will be dropped to a shell after
a timeout.
Scripts can remove themselves from the initqueue by "rm $job".
/pre-mount/*.sh
scripts to run before the root filesystem is mounted
NFS is an exception, because it has no device node to be created
and mounts in the udev events
/mount/*.sh
scripts to mount the root filesystem
NFS is an exception, because it has no device node to be created
and mounts in the udev events
If the udev queue is empty and no root device is found or no root
filesystem was mounted, the user will be dropped to a shell after
a timeout.
/pre-pivot/*.sh
scripts to run before the real init is executed and the initramfs
disappears
All processes started before should be killed here.
The behaviour of the dmraid module demonstrates how to use the new
mechanism. If it detects a device which is part of a raidmember from a
udev rule, it installs a job to scan for dmraid devices, if the udev
queue is empty. After a scan, it removes itsself from the queue.
---
modules.d/50plymouth/63-luks.rules | 2 +-
modules.d/90crypt/70-luks.rules | 2 +-
modules.d/90dmraid/61-dmraid.rules | 12 ++++
modules.d/90dmraid/dmraid.sh | 3 -
modules.d/90dmraid/dmraid_scan | 8 +++
modules.d/90dmraid/install | 3 +-
modules.d/95rootfs-block/block-genrules.sh | 4 ++
modules.d/95rootfs-block/install | 1 +
modules.d/99base/init | 82 +++++++++++++++-------------
modules.d/99base/initqueue | 11 +++-
test/TEST-10-RAID/test.sh | 2 +-
test/TEST-30-ISCSI/test.sh | 2 +-
test/TEST-40-NBD/test.sh | 2 +-
13 files changed, 85 insertions(+), 49 deletions(-)
create mode 100644 modules.d/90dmraid/61-dmraid.rules
delete mode 100644 modules.d/90dmraid/dmraid.sh
create mode 100755 modules.d/90dmraid/dmraid_scan
diff --git a/modules.d/50plymouth/63-luks.rules
b/modules.d/50plymouth/63-luks.rules
index c3c6627..f55bf39 100644
--- a/modules.d/50plymouth/63-luks.rules
+++ b/modules.d/50plymouth/63-luks.rules
@@ -7,6 +7,6 @@
SUBSYSTEM!="block", GOTO="luks_end"
ACTION!="add|change", GOTO="luks_end"
-ENV{ID_FS_TYPE}=="crypto_LUKS", RUN+="/sbin/initqueue /sbin/cryptroot-ask
$env{DEVNAME} luks-$env{ID_FS_UUID}"
+ENV{ID_FS_TYPE}=="crypto_LUKS", RUN+="/sbin/initqueue --onetime
/sbin/cryptroot-ask $env{DEVNAME} luks-$env{ID_FS_UUID}"
LABEL="luks_end"
diff --git a/modules.d/90crypt/70-luks.rules b/modules.d/90crypt/70-luks.rules
index c3c6627..f55bf39 100644
--- a/modules.d/90crypt/70-luks.rules
+++ b/modules.d/90crypt/70-luks.rules
@@ -7,6 +7,6 @@
SUBSYSTEM!="block", GOTO="luks_end"
ACTION!="add|change", GOTO="luks_end"
-ENV{ID_FS_TYPE}=="crypto_LUKS", RUN+="/sbin/initqueue /sbin/cryptroot-ask
$env{DEVNAME} luks-$env{ID_FS_UUID}"
+ENV{ID_FS_TYPE}=="crypto_LUKS", RUN+="/sbin/initqueue --onetime
/sbin/cryptroot-ask $env{DEVNAME} luks-$env{ID_FS_UUID}"
LABEL="luks_end"
diff --git a/modules.d/90dmraid/61-dmraid.rules
b/modules.d/90dmraid/61-dmraid.rules
new file mode 100644
index 0000000..a8034db
--- /dev/null
+++ b/modules.d/90dmraid/61-dmraid.rules
@@ -0,0 +1,12 @@
+# This file causes block devices with Linux RAID (mdadm) signatures to
+# automatically cause mdadm to be run.
+# See udev(8) for syntax
+
+SUBSYSTEM!="block", GOTO="dm_end"
+ACTION!="add|change", GOTO="dm_end"
+
+ENV{ID_FS_TYPE}=="linux_raid_member", GOTO="dm_end"
+
+ENV{ID_FS_TYPE}=="*_raid_member", RUN+="/sbin/initqueue /sbin/dmraid_scan"
+
+LABEL="dm_end"
diff --git a/modules.d/90dmraid/dmraid.sh b/modules.d/90dmraid/dmraid.sh
deleted file mode 100644
index 4e2d5bf..0000000
--- a/modules.d/90dmraid/dmraid.sh
+++ /dev/null
@@ -1,3 +0,0 @@
-dmraid -ay -Z
-udevadm settle --timeout=30 >/dev/null 2>&1
-
diff --git a/modules.d/90dmraid/dmraid_scan b/modules.d/90dmraid/dmraid_scan
new file mode 100755
index 0000000..433e5d3
--- /dev/null
+++ b/modules.d/90dmraid/dmraid_scan
@@ -0,0 +1,8 @@
+#!/bin/sh
+
+if udevadm settle --timeout=0 >/dev/null 2>&1; then
+ # run dmraid if udev has settled
+ dmraid -ay -Z
+ [ -e "$job" ] && rm -f "$job"
+fi
+
diff --git a/modules.d/90dmraid/install b/modules.d/90dmraid/install
index 636f1d2..9314c00 100755
--- a/modules.d/90dmraid/install
+++ b/modules.d/90dmraid/install
@@ -1,4 +1,5 @@
#!/bin/bash
dracut_install dmraid
-inst_hook pre-mount 10 "$moddir/dmraid.sh"
+inst "$moddir/dmraid_scan" /sbin/dmraid_scan
inst_rules 64-md-raid.rules
+inst_rules "$moddir/61-dmraid.rules"
diff --git a/modules.d/95rootfs-block/block-genrules.sh
b/modules.d/95rootfs-block/block-genrules.sh
index 5d1a669..10471ea 100644
--- a/modules.d/95rootfs-block/block-genrules.sh
+++ b/modules.d/95rootfs-block/block-genrules.sh
@@ -5,4 +5,8 @@ if [ "${root%%:*}" = "block" ]; then
printf 'SYMLINK=="%s", SYMLINK+="root"\n' \
${root#block:/dev/}
) >> /etc/udev/rules.d/99-mount.rules
+ (
+ printf '[ -e "%s" ] && { ln -s "%s" /dev/root; rm "$job"; }\n' \
+ "${root#block:}" "${root#block:}"
+ ) >> /initqueue/blocksymlink.sh
fi
diff --git a/modules.d/95rootfs-block/install b/modules.d/95rootfs-block/install
index 618d357..d6c161a 100755
--- a/modules.d/95rootfs-block/install
+++ b/modules.d/95rootfs-block/install
@@ -1,4 +1,5 @@
#!/bin/sh
+dracut_install ln
inst_hook cmdline 95 "$moddir/parse-block.sh"
inst_hook pre-udev 30 "$moddir/block-genrules.sh"
inst_hook mount 99 "$moddir/mount-root.sh"
diff --git a/modules.d/99base/init b/modules.d/99base/init
index bb20220..f082765 100755
--- a/modules.d/99base/init
+++ b/modules.d/99base/init
@@ -16,36 +16,6 @@ emergency_shell()
sh -i
}
-do_initqueue()
-{
- while :; do
- # bail out, if we have mounted the root filesystem
- [ -d "$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
--exit-if-exists=/dev/root
- else
- udevadm settle --timeout=30
- fi
- [ -f /initqueue/work ] || break
- rm /initqueue/work
-
- 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
-}
-
export PATH=/sbin:/bin:/usr/sbin:/usr/bin
export TERM=linux
NEWROOT="/sysroot"
@@ -116,7 +86,47 @@ source_all pre-trigger
# then the rest
udevadm trigger $udevtriggeropts >/dev/null 2>&1
-do_initqueue
+i=0
+while :; do
+ # bail out, if we have mounted the root filesystem
+ [ -d "$NEWROOT/proc" ] && break;
+
+ # check if root can be mounted
+ [ -e /dev/root ] && break;
+
+ if [ $UDEVVERSION -ge 143 ]; then
+ udevadm settle --exit-if-exists=/initqueue/work
--exit-if-exists=/dev/root
+ else
+ udevadm settle --timeout=30
+ fi
+ unset queuetriggered
+ if [ -f /initqueue/work ]; then
+ rm /initqueue/work
+ queuetriggered="1"
+ fi
+
+ for job in /initqueue/*.sh; do
+ [ -e "$job" ] || break
+ job=$job . $job
+
+ # bail out, if we have mounted the root filesystem
+ [ -d "$NEWROOT/proc" ] && break;
+ # check if root can be mounted
+ [ -e /dev/root ] && break;
+ done
+
+ [ -n "$queuetriggered" ] && continue
+
+ if udevadm settle --timeout=0 >/dev/null 2>&1; then
+ # no more udev jobs
+ sleep 0.5
+ i=$(($i+1))
+ [ $i -gt 20 ] && getarg rdshell \
+ && { flock -s 9 ; emergency_shell; } 9>/.console_lock
+ fi
+done
+unset job
+unset queuetriggered
# pre-mount happens before we try to mount the root filesystem,
# and happens once.
@@ -124,23 +134,19 @@ getarg 'rdbreak=pre-mount' && emergency_shell
source_all pre-mount
getarg 'rdbreak=mount' && emergency_shell
-do_initqueue
-
# mount scripts actually try to mount the root filesystem, and may
# be sourced any number of times. As soon as one suceeds, no more are sourced.
i=0
while :; do
[ -d "$NEWROOT/proc" ] && break;
-
for f in /mount/*.sh; do
[ -f "$f" ] && . "$f"
- do_initqueue
- [ "$ROOTFS_MOUNTED" ] && break;
+ [ -d "$NEWROOT/proc" ] && break;
done
- sleep 0.5
i=$(($i+1))
- { flock -s 9 ; [ $i -gt 20 ] && emergency_shell; } 9>/.console_lock
+ [ $i -gt 20 ] && getarg rdshell \
+ && { flock -s 9 ; emergency_shell; } 9>/.console_lock
done
# pre pivot scripts are sourced just before we switch over to the new root.
diff --git a/modules.d/99base/initqueue b/modules.d/99base/initqueue
index 0a760b7..a5c6ef6 100755
--- a/modules.d/99base/initqueue
+++ b/modules.d/99base/initqueue
@@ -1,5 +1,12 @@
#!/bin/sh
-echo "$@" > /tmp/$$.job
-mv /tmp/$$.job /initqueue/
+if [ "$1" = "--onetime" ]; then
+ onetime="yes"
+ shift
+fi
+echo "$@" > /tmp/$$.sh
+if [ -n "$onetime" ]; then
+ echo '[ -e "$job" ] && rm "$job"' >> /tmp/$$.sh
+fi
+mv /tmp/$$.sh /initqueue/
>> /initqueue/work
diff --git a/test/TEST-10-RAID/test.sh b/test/TEST-10-RAID/test.sh
index 23f9aff..700c377 100755
--- a/test/TEST-10-RAID/test.sh
+++ b/test/TEST-10-RAID/test.sh
@@ -38,7 +38,7 @@ test_setup() {
initdir=overlay
. $basedir/dracut-functions
dracut_install sfdisk mke2fs poweroff cp umount
- inst_simple ./create-root.sh /pre-mount/01create-root.sh
+ inst_simple ./create-root.sh /initqueue/01create-root.sh
)
# create an initramfs that will create the target root filesystem.
diff --git a/test/TEST-30-ISCSI/test.sh b/test/TEST-30-ISCSI/test.sh
index 6469950..d9da529 100755
--- a/test/TEST-30-ISCSI/test.sh
+++ b/test/TEST-30-ISCSI/test.sh
@@ -81,7 +81,7 @@ test_setup() {
initdir=overlay
. $basedir/dracut-functions
dracut_install sfdisk mke2fs poweroff cp umount
- inst_simple ./create-root.sh /pre-mount/01create-root.sh
+ inst_simple ./create-root.sh /initqueue/01create-root.sh
)
# create an initramfs that will create the target root filesystem.
diff --git a/test/TEST-40-NBD/test.sh b/test/TEST-40-NBD/test.sh
index 2f54511..07de7fe 100755
--- a/test/TEST-40-NBD/test.sh
+++ b/test/TEST-40-NBD/test.sh
@@ -184,7 +184,7 @@ make_encrypted_root() {
initdir=overlay
. $basedir/dracut-functions
dracut_install mke2fs poweroff cp umount
- inst_simple ./create-root.sh /pre-mount/01create-root.sh
+ inst_simple ./create-root.sh /initqueue/01create-root.sh
)
# create an initramfs that will create the target root filesystem.
--
1.6.2.5
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