Re: New Grub2 verses Debian 9.5 -boots slow and strange?

[jmh6]

On Sat, 20 Oct 2018, Pascal Hambourg wrote:

> Le 20/10/2018 ? 13:27, address@hidden a ?crit :
> >    I wanted to try to answer your question about I meant by Debian 9.5 
> > boot being flaky and slow.
> >
> >    Here is what happens now. I can't easily capture these screens.
> >
> >    Power up machine
> >    Grub screen for a few seconds
> >    Two lines looking for SD 4:0:0:0 [sdb]
> >
> > Seems normal except looking for 4:0:0:0 as SDB and not finding anything 
> > so it gives up eventually?
>
> "sd x:x:x:x" is a virtual SCSI device bus identifier thing. It is 
> internal to the kernel. What are the exact lines ? You can find them in 
> the output of "dmesg" after booting.
>
> >    Gave up waiting for suspend/resume device
>
> This is a swap device identifier issue. The swap used for hibernation 
> can be defined in several locations. What is the output of the following 
> commands ?
>
> blkid -t TYPE=swap
>
> grep -i resume /proc/cmdline /etc/default/grub
> grep -i resume /etc/initramfs-tools/{initramfs.conf,conf.d/*}
>
> > Boot process decides this is a very slow hard drive so decides to wait 
> > for it to warm up?
>
> No. Just waiting for non-existent devices and eventually giving up.
>
> >    My guess at this point would be that when Debian was installed SDB 
> > was at 4:0:0:0 and that grub or the early Debian boot process goes to 
> > look for that physical device and does not find it?
>
> It does not matter what the SCSI identifier was during the installation 
> process. As I wrote, it is an internal kernel thing. It is not used to 
> identify the root or swap device.

Hi Pascal,

  The commands you suggested did not produce output.

  I hope what I have done gives you the output you want.

  I just ran this on this same system. It was still running so the system 
has been running for quite a while.

  John


------------------------------
address@hidden:/# blkid -t TYPE=swap
address@hidden:/# blkid
/dev/sda1: UUID="1ce2377a-0eb0-4e1f-842c-4574f5a59514" TYPE="ext2" 
PARTUUID="82218f90-01"
/dev/sda4: LABEL="HDDRECOVERY" UUID="EAA4A5F5A4A5C503" TYPE="ntfs" 
PARTUUID="82218f90-04"
/dev/sda5: UUID="d796f4cf-1174-4d13-af62-8fad64865a4b" TYPE="reiserfs" 
PARTUUID="82218f90-05"
/dev/sdb1: UUID="342345d7-94fa-42d2-ae4c-8e947418fd32" TYPE="ext4" 
PARTUUID="db44f11b-01"
/dev/sda2: PARTUUID="82218f90-02"
/dev/sdb5: PARTUUID="db44f11b-05"
address@hidden:/# cat /proc/cmdline
BOOT_IMAGE=/boot/vmlinuz-4.9.0-7-amd64 
root=UUID=342345d7-94fa-42d2-ae4c-8e947418fd32 ro quiet
address@hidden:/# cat /etc/default/grub
# If you change this file, run 'update-grub' afterwards to update
# /boot/grub/grub.cfg.
# For full documentation of the options in this file, see:
#   info -f grub -n 'Simple configuration'

GRUB_DEFAULT=0
GRUB_TIMEOUT=5
GRUB_DISTRIBUTOR=`lsb_release -i -s 2> /dev/null || echo Debian`
GRUB_CMDLINE_LINUX_DEFAULT="quiet"
GRUB_CMDLINE_LINUX=""

# Uncomment to enable BadRAM filtering, modify to suit your needs
# This works with Linux (no patch required) and with any kernel that 
obtains
# the memory map information from GRUB (GNU Mach, kernel of FreeBSD ...)
#GRUB_BADRAM="0x01234567,0xfefefefe,0x89abcdef,0xefefefef"

# Uncomment to disable graphical terminal (grub-pc only)
#GRUB_TERMINAL=console

# The resolution used on graphical terminal
# note that you can use only modes which your graphic card supports via 
VBE
# you can see them in real GRUB with the command `vbeinfo'
#GRUB_GFXMODE=640x480

# Uncomment if you don't want GRUB to pass "root=UUID=xxx" parameter to 
Linux
#GRUB_DISABLE_LINUX_UUID=true

# Uncomment to disable generation of recovery mode menu entries
#GRUB_DISABLE_RECOVERY="true"

# Uncomment to get a beep at grub start
#GRUB_INIT_TUNE="480 440 1"
address@hidden:/# cd /etc/initramfs-tools/
address@hidden:/etc/initramfs-tools# cat initramfs.conf
#
# initramfs.conf
# Configuration file for mkinitramfs(8). See initramfs.conf(5).
#
# Note that configuration options from this file can be overridden
# by config files in the /etc/initramfs-tools/conf.d directory.

#
# MODULES: [ most | netboot | dep | list ]
#
# most - Add most filesystem and all harddrive drivers.
#
# dep - Try and guess which modules to load.
#
# netboot - Add the base modules, network modules, but skip block devices.
#
# list - Only include modules from the 'additional modules' list
#

MODULES=most

#
# BUSYBOX: [ y | n | auto ]
#
# Use busybox shell and utilities.  If set to n, klibc utilities will be 
used.
# If set to auto (or unset), busybox will be used if installed and klibc 
will
# be used otherwise.
#

BUSYBOX=auto

#
# KEYMAP: [ y | n ]
#
# Load a keymap during the initramfs stage.
#

KEYMAP=n

#
# COMPRESS: [ gzip | bzip2 | lzma | lzop | xz ]
#

COMPRESS=gzip

#
# NFS Section of the config.
#

#
# DEVICE: ...
#
# Specify a specific network interface, like eth0
# Overridden by optional ip= bootarg
#

DEVICE=

#
# NFSROOT: [ auto | HOST:MOUNT ]
#

NFSROOT=auto

address@hidden:/etc/initramfs-tools# cd conf.d
address@hidden:/etc/initramfs-tools/conf.d# ls
resume
address@hidden:/etc/initramfs-tools/conf.d# cat resume
RESUME=UUID=b66a9345-332d-4abf-a081-351ab08ed7f9
address@hidden:/etc/initramfs-tools/conf.d#



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