I moved this to initramfs-tools. I made the following change, ran 'update-grub' and rebooted. after reboot:
$ dmesg | grep 'sda1.*mou'
[ 5.614279] EXT4-fs (sda1): mounted filesystem with ordered data mode. Opts: (null)
[ 6.452427] EXT4-fs (sda1): re-mounted. Opts: discard
$ diff -u /etc/default/grub.d/50-cloudimg-settings.cfg.orig /etc/default/grub.d/50-cloudimg-settings.cfg
--- /etc/default/grub.d/50-cloudimg-settings.cfg.orig 2016-08-22 18:47:12.878049696 +0000
+++ /etc/default/grub.d/50-cloudimg-settings.cfg 2016-08-22 18:47:18.306335571 +0000
@@ -2,7 +2,7 @@
# CLOUD_IMG: This file was created/modified by the Cloud Image build process
# Set the default commandline
-GRUB_CMDLINE_LINUX_DEFAULT="console=tty1 console=ttyS0 earlyprintk=ttyS0 rootdelay=300"
+GRUB_CMDLINE_LINUX_DEFAULT="console=tty1 console=ttyS0 earlyprintk=ttyS0"
I moved this to initramfs-tools. I made the following change, ran 'update-grub' and rebooted. after reboot:
$ dmesg | grep 'sda1.*mou'
[ 5.614279] EXT4-fs (sda1): mounted filesystem with ordered data mode. Opts: (null)
[ 6.452427] EXT4-fs (sda1): re-mounted. Opts: discard
$ diff -u /etc/default/ grub.d/ 50-cloudimg- settings. cfg.orig /etc/default/ grub.d/ 50-cloudimg- settings. cfg grub.d/ 50-cloudimg- settings. cfg.orig 2016-08-22 18:47:12.878049696 +0000 grub.d/ 50-cloudimg- settings. cfg 2016-08-22 18:47:18.306335571 +0000
--- /etc/default/
+++ /etc/default/
@@ -2,7 +2,7 @@
# CLOUD_IMG: This file was created/modified by the Cloud Image build process
# Set the default commandline LINUX_DEFAULT= "console= tty1 console=ttyS0 earlyprintk=ttyS0 rootdelay=300" LINUX_DEFAULT= "console= tty1 console=ttyS0 earlyprintk=ttyS0"
-GRUB_CMDLINE_
+GRUB_CMDLINE_
# Set the grub console type serial
GRUB_TERMINAL=