Changeset 2f6d8ec

Timestamp:

09/07/2019 01:43:10 PM (5 years ago)

Author:

Pierre Labastie <pieere@…>

Branches:

10.0, 10.1, 11.0, 11.1, 11.2, 11.3, 12.0, 12.1, 12.2, 9.1, gimp3, kea, ken/TL2024, ken/inkscape-core-mods, ken/tuningfonts, lazarus, lxqt, plabs/newcss, plabs/python-mods, python3.11, qt5new, rahul/power-profiles-daemon, renodr/vulkan-addition, trunk, upgradedb, xry111/for-12.3, xry111/intltool, xry111/llvm18, xry111/soup3, xry111/spidermonkey128, xry111/test-20220226, xry111/xf86-video-removal

Children:

810c25c

Parents:

57394c4

Message:

Add the possibility for resuming from disk in initramfs. This allows kernel
command lines like this:
linux /boot/vmlinuz-5.2.11-lfs-SVN-20190902 root=UUID=47a81d89-8788-4ec4-99dd-0f3a0943e96b resume=LABEL=MYSWAP ro
initrd /boot/initrd.img-5.2.11-lfs-1

git-svn-id: svn://svn.linuxfromscratch.org/BLFS/trunk/BOOK@22107 af4574ff-66df-0310-9fd7-8a98e5e911e0

File:

• postlfs/filesystems/initramfs.xml (modified) (5 diffs)

postlfs/filesystems/initramfs.xml

@@ -223 +223 @@
   cp -a /lib/systemd $WDIR/lib
 fi
+if [ -d /lib/elogind ]; then
+  cp -a /lib/elogind $WDIR/lib
+fi
 
 # Install the kernel modules if requested
@@ -306 +309 @@
 }
 
+do_try_resume()
+{
+   case "$resume" in
+      UUID=* ) eval $resume; resume="/dev/disk/by-uuid/$UUID"  ;;
+      LABEL=*) eval $resume; resume="/dev/disk/by-label/$LABEL" ;;
+   esac
+
+   if $noresume || ! [ -b "$resume" ]; then return; fi
+
+   ls -lH "$resume" | ( read x x x x maj min x
+       echo -n ${maj%,}:$min > /sys/power/resume )
+}
+
 init=/sbin/init
 root=
@@ -313 +329 @@
 rootflags=
 device=
+resume=
+noresume=false
 
 mount -n -t devtmpfs devtmpfs /dev
@@ -328 +346 @@
     rootfstype=*) rootfstype=${param#rootfstype=} ;;
     rootflags=* ) rootflags=${param#rootflags=}   ;;
+    resume=*    ) resume=${param#resume=}         ;;
+    noresume    ) noresume=true                   ;;
     ro          ) ro="ro"                         ;;
     rw          ) ro="rw"                         ;;
@@ -353 +373 @@
 if [ -n "$rootdelay"    ] ; then sleep "$rootdelay"              ; fi
 
+do_try_resume # This function will not return if resuming from disk
 do_mount_root