[Bug 947988] Re: fixrtc kernel option always sets system time

[Oliver Grawert]

could you try this patch (regenerate your initrd after applying it to
/usr/share/initramfs-tools/scripts/local-premount/fixrtc):

--- /usr/share/initramfs-tools/scripts/local-premount/fixrtc	2010-04-26 16:59:13.000000000 +0200
+++ fixrtc	2012-03-06 14:47:49.580000000 +0100
@@ -50,12 +50,19 @@
 done
 
 if [ -n "$BROKEN_CLOCK" -a -n "$ROOTDEV" ];then
-        ROOTDISK=$(readlink -f "$ROOTDEV") &&
+        ROOTDISK=$(readlink -f "$ROOTDEV")
 
-        TIMESTR=$(dumpe2fs -h "$ROOTDISK" 2>/dev/null|grep "Last mount time") &&
-        TIME=${TIMESTR#*:} &&
+        TIMESTR=$(dumpe2fs -h "$ROOTDISK" 2>/dev/null|grep "Last mount time")
+        TIME=${TIMESTR#*:}
 
-        date --set="${TIME} 1 minute" >/dev/null 2>&1
+	hwclock -s
+
+	MOUNTTIME=$(date --utc --date  "${TIME}"  +%s)
+	CURDATE=$(date --utc --date "$(date)" +%s)
+
+	if [ "$MOUNTTIME" -gt "$CURDATE" ]; then
+        	date --set="${TIME} 1 minute" >/dev/null 2>&1
+	fi
 fi
 
 # This script is best-effort.  If we couldn't fudge the clock as desired,


** Changed in: initramfs-tools (Ubuntu)
   Importance: Undecided => High

** Changed in: initramfs-tools (Ubuntu)
       Status: New => Triaged

** Changed in: initramfs-tools (Ubuntu)
     Assignee: (unassigned) => Oliver Grawert (ogra)

** Also affects: initramfs-tools (Ubuntu Precise)
   Importance: High
     Assignee: Oliver Grawert (ogra)
       Status: Triaged

** Changed in: initramfs-tools (Ubuntu Precise)
    Milestone: None => ubuntu-12.04-beta-2

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https://bugs.launchpad.net/bugs/947988

Title:
  fixrtc kernel option always sets system time

Status in “initramfs-tools” package in Ubuntu:
  Triaged
Status in “initramfs-tools” source package in Precise:
  Triaged

Bug description:
  
  On Natty armel, the kernel option 'fixrtc' exists to set the system time from the last mount time from the rootfs. This allows systems which does not have a valid RTC time at startup to be able to boot of the root file system.

  When the 'fixrtc' option is used, the system time is set to the last
  mount time, regardless if the system time is already set to something
  valid. There should be a comparison between the current system time
  and the last mount time. The fixrtc should only come into play if the
  system time is less than the last mount time of the fs.

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