Bug#1035665: grub-efi-amd64: GRUB command "halt" generates 1 "unsafe shutdown" on NVMe-SSD (Samsung 980)

Alf alf.debianfan at gmx.de
Sun May 7 12:12:46 BST 2023


Package: grub-efi-amd64
Version: 2.06-12
Severity: important
Tags: d-i

Dear Maintainer,

   * What led up to the situation?
Select a command line in GRUB-menu ("c") and enter "halt to shutdown the PC.
Acording to official documentation on grub 2.06 (https://www.gnu.org/software/grub/manual/grub/grub.html paragraph 16.3.31) it should perform a shutdown using APM.
After every "halt" command the PC powers off and at next boot my NVMe-SSD, Samsung 980 has the SMART-attribute "unsafe shutdowns" increased by 1.
This indicates that the SSD's Buffers have not been transferred to NAND before the power is cut.

Remark: said SSD uses host memory buffer (HMB), a technique becoming popular.

Those unsafe shutdowns do NOT happen when I perform a "poweroff" or "shutdown -h" on a booted system (here Bookworm).

I tried to verify that it is not a single issue by discussing this issue in the German debianforum and got the same beheaviour on similar hardware confirrmed.
https://debianforum.de/forum/viewtopic.php?t=186800#p1326586

-- Package-specific info:

*********************** BEGIN /proc/mounts
/dev/nvme0n1p4 / ext4 rw,relatime,errors=remount-ro,stripe=32 0 0
/dev/nvme0n1p6 /home/ingo/data ext4 rw,noatime,errors=remount-ro,stripe=32 0 0
/dev/nvme0n1p1 /boot/efi vfat rw,relatime,fmask=0077,dmask=0077,codepage=437,iocharset=ascii,shortname=mixed,utf8,errors=remount-ro 0 0
*********************** END /proc/mounts

*********************** BEGIN /boot/grub/grub.cfg
#
# DO NOT EDIT THIS FILE
#
# It is automatically generated by grub-mkconfig using templates
# from /etc/grub.d and settings from /etc/default/grub
#

### BEGIN /etc/grub.d/00_header ###
if [ -s $prefix/grubenv ]; then
  set have_grubenv=true
  load_env
fi
if [ "${next_entry}" ] ; then
   set default="${next_entry}"
   set next_entry=
   save_env next_entry
   set boot_once=true
else
   set default="0"
fi

if [ x"${feature_menuentry_id}" = xy ]; then
  menuentry_id_option="--id"
else
  menuentry_id_option=""
fi

export menuentry_id_option

if [ "${prev_saved_entry}" ]; then
  set saved_entry="${prev_saved_entry}"
  save_env saved_entry
  set prev_saved_entry=
  save_env prev_saved_entry
  set boot_once=true
fi

function savedefault {
  if [ -z "${boot_once}" ]; then
    saved_entry="${chosen}"
    save_env saved_entry
  fi
}
function load_video {
  if [ x$feature_all_video_module = xy ]; then
    insmod all_video
  else
    insmod efi_gop
    insmod efi_uga
    insmod ieee1275_fb
    insmod vbe
    insmod vga
    insmod video_bochs
    insmod video_cirrus
  fi
}

if [ x$feature_default_font_path = xy ] ; then
   font=unicode
else
insmod part_gpt
insmod ext2
search --no-floppy --fs-uuid --set=root 419e6a3e-0a83-4f46-b3cb-dcd21f7bc2ec
    font="/usr/share/grub/unicode.pf2"
fi

if loadfont $font ; then
  set gfxmode=1024x768
  load_video
  insmod gfxterm
  set locale_dir=$prefix/locale
  set lang=de_DE
  insmod gettext
fi
terminal_output gfxterm
if [ "${recordfail}" = 1 ] ; then
  set timeout=30
else
  if [ x$feature_timeout_style = xy ] ; then
    set timeout_style=menu
    set timeout=7
  # Fallback normal timeout code in case the timeout_style feature is
  # unavailable.
  else
    set timeout=7
  fi
fi
### END /etc/grub.d/00_header ###

### BEGIN /etc/grub.d/05_debian_theme ###
insmod part_gpt
insmod ext2
search --no-floppy --fs-uuid --set=root 419e6a3e-0a83-4f46-b3cb-dcd21f7bc2ec
insmod png
if background_image /usr/share/desktop-base/emerald-theme/grub/grub-16x9.png; then
  set color_normal=white/black
  set color_highlight=black/white
else
  set menu_color_normal=cyan/blue
  set menu_color_highlight=white/blue
fi
### END /etc/grub.d/05_debian_theme ###

### BEGIN /etc/grub.d/09_custom ###
# This file provides an easy way to add custom menu entries.  Simply type the
# menu entries you want to add after this comment.  Be careful not to change
# the 'exec tail' line above.
menuentry 'Debian Bookworm on nvme0n1p4' {
   search --fs-uuid --set=root 419e6a3e-0a83-4f46-b3cb-dcd21f7bc2ec
   linux /vmlinuz root=UUID=419e6a3e-0a83-4f46-b3cb-dcd21f7bc2ec ro quiet
   initrd /initrd.img
}

menuentry 'Debian Service System on nvme0n1p2' {
   search --fs-uuid --set=root f137f033-f121-4857-9b00-f8ecaa32fff8
#   linux /vmlinuz root=UUID=f137f033-f121-4857-9b00-f8ecaa32fff8 ro quiet nvme_core.default_ps_max_latency>
   linux /vmlinuz root=UUID=f137f033-f121-4857-9b00-f8ecaa32fff8 ro quiet
   initrd /initrd.img
}

menuentry 'Debian Test System on nvme0n1p5' {
   search --fs-uuid --set=root 689af3dd-5898-4c3c-a688-366815c0f79f
   linux /vmlinuz root=UUID=689af3dd-5898-4c3c-a688-366815c0f79f ro quiet
   initrd /initrd.img
}

menuentry "--------" {
        normal
}

menuentry " Reboot" {
	reboot
}

#menuentry " Shutdown" {
#        halt
#}

menuentry "--------" {
        normal
}
### END /etc/grub.d/09_custom ###

### BEGIN /etc/grub.d/10_linux ###
function gfxmode {
	set gfxpayload="${1}"
}
set linux_gfx_mode=
export linux_gfx_mode
menuentry 'Debian GNU/Linux' --class debian --class gnu-linux --class gnu --class os $menuentry_id_option 'gnulinux-simple-419e6a3e-0a83-4f46-b3cb-dcd21f7bc2ec' {
	load_video
	insmod gzio
	if [ x$grub_platform = xxen ]; then insmod xzio; insmod lzopio; fi
	insmod part_gpt
	insmod ext2
	search --no-floppy --fs-uuid --set=root 419e6a3e-0a83-4f46-b3cb-dcd21f7bc2ec
	echo	'Loading Linux 6.1.0-7-amd64 ...'
	linux	/boot/vmlinuz-6.1.0-7-amd64 root=UUID=419e6a3e-0a83-4f46-b3cb-dcd21f7bc2ec ro  quiet
	echo	'Loading initial ramdisk ...'
	initrd	/boot/initrd.img-6.1.0-7-amd64
}
submenu 'Advanced options for Debian GNU/Linux' $menuentry_id_option 'gnulinux-advanced-419e6a3e-0a83-4f46-b3cb-dcd21f7bc2ec' {
	menuentry 'Debian GNU/Linux, with Linux 6.1.0-7-amd64' --class debian --class gnu-linux --class gnu --class os $menuentry_id_option 'gnulinux-6.1.0-7-amd64-advanced-419e6a3e-0a83-4f46-b3cb-dcd21f7bc2ec' {
		load_video
		insmod gzio
		if [ x$grub_platform = xxen ]; then insmod xzio; insmod lzopio; fi
		insmod part_gpt
		insmod ext2
		search --no-floppy --fs-uuid --set=root 419e6a3e-0a83-4f46-b3cb-dcd21f7bc2ec
		echo	'Loading Linux 6.1.0-7-amd64 ...'
		linux	/boot/vmlinuz-6.1.0-7-amd64 root=UUID=419e6a3e-0a83-4f46-b3cb-dcd21f7bc2ec ro  quiet
		echo	'Loading initial ramdisk ...'
		initrd	/boot/initrd.img-6.1.0-7-amd64
	}
	menuentry 'Debian GNU/Linux, with Linux 6.1.0-7-amd64 (recovery mode)' --class debian --class gnu-linux --class gnu --class os $menuentry_id_option 'gnulinux-6.1.0-7-amd64-recovery-419e6a3e-0a83-4f46-b3cb-dcd21f7bc2ec' {
		load_video
		insmod gzio
		if [ x$grub_platform = xxen ]; then insmod xzio; insmod lzopio; fi
		insmod part_gpt
		insmod ext2
		search --no-floppy --fs-uuid --set=root 419e6a3e-0a83-4f46-b3cb-dcd21f7bc2ec
		echo	'Loading Linux 6.1.0-7-amd64 ...'
		linux	/boot/vmlinuz-6.1.0-7-amd64 root=UUID=419e6a3e-0a83-4f46-b3cb-dcd21f7bc2ec ro single
		echo	'Loading initial ramdisk ...'
		initrd	/boot/initrd.img-6.1.0-7-amd64
	}
}

### END /etc/grub.d/10_linux ###

### BEGIN /etc/grub.d/20_linux_xen ###

### END /etc/grub.d/20_linux_xen ###

### BEGIN /etc/grub.d/30_os-prober ###
menuentry 'Debian GNU/Linux 12 (bookworm) (on /dev/nvme0n1p2)' --class debian --class gnu-linux --class gnu --class os $menuentry_id_option 'osprober-gnulinux-simple-f137f033-f121-4857-9b00-f8ecaa32fff8' {
	insmod part_gpt
	insmod ext2
	search --no-floppy --fs-uuid --set=root f137f033-f121-4857-9b00-f8ecaa32fff8
	linux /vmlinuz root=UUID=f137f033-f121-4857-9b00-f8ecaa32fff8 ro quiet
	initrd /initrd.img
}
submenu 'Advanced options for Debian GNU/Linux 12 (bookworm) (on /dev/nvme0n1p2)' $menuentry_id_option 'osprober-gnulinux-advanced-f137f033-f121-4857-9b00-f8ecaa32fff8' {
	menuentry 'Service System on nvme0n1p2 (on /dev/nvme0n1p2)' --class gnu-linux --class gnu --class os $menuentry_id_option 'osprober-gnulinux-/vmlinuz--f137f033-f121-4857-9b00-f8ecaa32fff8' {
		insmod part_gpt
		insmod ext2
		search --no-floppy --fs-uuid --set=root f137f033-f121-4857-9b00-f8ecaa32fff8
		linux /vmlinuz root=UUID=f137f033-f121-4857-9b00-f8ecaa32fff8 ro quiet
		initrd /initrd.img
	}
	menuentry 'Service System on nvme0n1p2 (recovery mode) (on /dev/nvme0n1p2)' --class gnu-linux --class gnu --class os $menuentry_id_option 'osprober-gnulinux-/vmlinuz-root=UUID=f137f033-f121-4857-9b00-f8ecaa32fff8 ro single-f137f033-f121-4857-9b00-f8ecaa32fff8' {
		insmod part_gpt
		insmod ext2
		search --no-floppy --fs-uuid --set=root f137f033-f121-4857-9b00-f8ecaa32fff8
		linux /vmlinuz root=UUID=f137f033-f121-4857-9b00-f8ecaa32fff8 ro single
		initrd /initrd.img
	}
}

menuentry 'Debian GNU/Linux 12 (bookworm) (on /dev/nvme0n1p5)' --class debian --class gnu-linux --class gnu --class os $menuentry_id_option 'osprober-gnulinux-simple-689af3dd-5898-4c3c-a688-366815c0f79f' {
	insmod part_gpt
	insmod ext2
	search --no-floppy --fs-uuid --set=root 689af3dd-5898-4c3c-a688-366815c0f79f
	linux /vmlinuz root=UUID=689af3dd-5898-4c3c-a688-366815c0f79f ro quiet
	initrd /initrd.img
}
submenu 'Advanced options for Debian GNU/Linux 12 (bookworm) (on /dev/nvme0n1p5)' $menuentry_id_option 'osprober-gnulinux-advanced-689af3dd-5898-4c3c-a688-366815c0f79f' {
	menuentry 'Test System on nvme0n1p5 (on /dev/nvme0n1p5)' --class gnu-linux --class gnu --class os $menuentry_id_option 'osprober-gnulinux-/vmlinuz--689af3dd-5898-4c3c-a688-366815c0f79f' {
		insmod part_gpt
		insmod ext2
		search --no-floppy --fs-uuid --set=root 689af3dd-5898-4c3c-a688-366815c0f79f
		linux /vmlinuz root=UUID=689af3dd-5898-4c3c-a688-366815c0f79f ro quiet
		initrd /initrd.img
	}
	menuentry 'Test System on nvme0n1p5 (recovery mode) (on /dev/nvme0n1p5)' --class gnu-linux --class gnu --class os $menuentry_id_option 'osprober-gnulinux-/vmlinuz-root=UUID=689af3dd-5898-4c3c-a688-366815c0f79f ro single-689af3dd-5898-4c3c-a688-366815c0f79f' {
		insmod part_gpt
		insmod ext2
		search --no-floppy --fs-uuid --set=root 689af3dd-5898-4c3c-a688-366815c0f79f
		linux /vmlinuz root=UUID=689af3dd-5898-4c3c-a688-366815c0f79f ro single
		initrd /initrd.img
	}
}

### END /etc/grub.d/30_os-prober ###

### BEGIN /etc/grub.d/30_uefi-firmware ###
menuentry 'UEFI Firmware Settings' $menuentry_id_option 'uefi-firmware' {
	fwsetup
}
### END /etc/grub.d/30_uefi-firmware ###

### BEGIN /etc/grub.d/41_custom ###
if [ -f  ${config_directory}/custom.cfg ]; then
  source ${config_directory}/custom.cfg
elif [ -z "${config_directory}" -a -f  $prefix/custom.cfg ]; then
  source $prefix/custom.cfg
fi
### END /etc/grub.d/41_custom ###
*********************** END /boot/grub/grub.cfg

*********************** BEGIN /proc/mdstat
cat: /proc/mdstat: No such file or directory
*********************** END /proc/mdstat

*********************** BEGIN LVM
*********************** END LVM

*********************** BEGIN /dev/disk/by-id
total 0
lrwxrwxrwx 1 root root 13 May  7 12:19 nvme-Samsung_SSD_980_1TB_S649NL0T621719X -> ../../nvme0n1
lrwxrwxrwx 1 root root 15 May  7 12:19 nvme-Samsung_SSD_980_1TB_S649NL0T621719X-part1 -> ../../nvme0n1p1
lrwxrwxrwx 1 root root 15 May  7 12:19 nvme-Samsung_SSD_980_1TB_S649NL0T621719X-part2 -> ../../nvme0n1p2
lrwxrwxrwx 1 root root 15 May  7 12:19 nvme-Samsung_SSD_980_1TB_S649NL0T621719X-part3 -> ../../nvme0n1p3
lrwxrwxrwx 1 root root 15 May  7 12:19 nvme-Samsung_SSD_980_1TB_S649NL0T621719X-part4 -> ../../nvme0n1p4
lrwxrwxrwx 1 root root 15 May  7 12:19 nvme-Samsung_SSD_980_1TB_S649NL0T621719X-part5 -> ../../nvme0n1p5
lrwxrwxrwx 1 root root 15 May  7 12:19 nvme-Samsung_SSD_980_1TB_S649NL0T621719X-part6 -> ../../nvme0n1p6
lrwxrwxrwx 1 root root 13 May  7 12:19 nvme-eui.002538d621a0aac5 -> ../../nvme0n1
lrwxrwxrwx 1 root root 15 May  7 12:19 nvme-eui.002538d621a0aac5-part1 -> ../../nvme0n1p1
lrwxrwxrwx 1 root root 15 May  7 12:19 nvme-eui.002538d621a0aac5-part2 -> ../../nvme0n1p2
lrwxrwxrwx 1 root root 15 May  7 12:19 nvme-eui.002538d621a0aac5-part3 -> ../../nvme0n1p3
lrwxrwxrwx 1 root root 15 May  7 12:19 nvme-eui.002538d621a0aac5-part4 -> ../../nvme0n1p4
lrwxrwxrwx 1 root root 15 May  7 12:19 nvme-eui.002538d621a0aac5-part5 -> ../../nvme0n1p5
lrwxrwxrwx 1 root root 15 May  7 12:19 nvme-eui.002538d621a0aac5-part6 -> ../../nvme0n1p6
*********************** END /dev/disk/by-id

*********************** BEGIN /dev/disk/by-uuid
total 0
lrwxrwxrwx 1 root root 15 May  7 12:19 2310-B833 -> ../../nvme0n1p1
lrwxrwxrwx 1 root root 15 May  7 12:19 3ef0ed60-3517-4059-8b30-faf6ce892d2a -> ../../nvme0n1p6
lrwxrwxrwx 1 root root 15 May  7 12:19 419e6a3e-0a83-4f46-b3cb-dcd21f7bc2ec -> ../../nvme0n1p4
lrwxrwxrwx 1 root root 15 May  7 12:19 689af3dd-5898-4c3c-a688-366815c0f79f -> ../../nvme0n1p5
lrwxrwxrwx 1 root root 15 May  7 12:19 855f657b-634f-4192-a99c-8b30f536cd86 -> ../../nvme0n1p3
lrwxrwxrwx 1 root root 15 May  7 12:19 f137f033-f121-4857-9b00-f8ecaa32fff8 -> ../../nvme0n1p2
*********************** END /dev/disk/by-uuid

-- System Information:
Debian Release: 12.0
  APT prefers testing-security
  APT policy: (500, 'testing-security'), (500, 'testing'), (50, 'unstable')
Architecture: amd64 (x86_64)

Kernel: Linux 6.1.0-7-amd64 (SMP w/12 CPU threads; PREEMPT)
Kernel taint flags: TAINT_USER, TAINT_OOT_MODULE, TAINT_UNSIGNED_MODULE
Locale: LANG=de_DE.UTF-8, LC_CTYPE=de_DE.UTF-8 (charmap=UTF-8), LANGUAGE not set
Shell: /bin/sh linked to /usr/bin/dash
Init: systemd (via /run/systemd/system)
LSM: AppArmor: enabled

Versions of packages grub-efi-amd64 depends on:
ii  debconf [debconf-2.0]  1.5.82
ii  grub-common            2.06-12
ii  grub-efi-amd64-bin     2.06-12
ii  grub2-common           2.06-12
ii  ucf                    3.0043+nmu1

grub-efi-amd64 recommends no packages.

grub-efi-amd64 suggests no packages.

-- debconf information:
  grub2/update_nvram: true
  grub2/kfreebsd_cmdline:
* grub2/linux_cmdline_default: quiet
  grub2/force_efi_extra_removable: false
  grub2/enable_os_prober: false
  grub2/kfreebsd_cmdline_default: quiet
* grub2/gnumach_cmdline:
* grub2/linux_cmdline:



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