Missing snapshots from read-only snapshots

English Install/Boot/Login
1

I have an issue where I don’t see all my snapshots when I go to the read-only snapshots in GRUB.

I’m on microos.

This is the output from running snapper ls;

 # | Type   | Præ # | Dato                          | Bruger | Brugt plads | Oprydning | Beskrivelse             | Brugerdata
-----+--------+-------+-------------------------------+--------+-------------+-----------+-------------------------+--------------
  0  | single |       |                               | root   |             |           | current                 |
 70  | single |       | tir 28 nov 2023 10:05:20 CET  | root   |  132,38 MiB | number    | Snapshot Update of #69  | important=yes
 71  | single |       | ons 29 nov 2023 11:17:08 CET  | root   |  115,97 MiB | number    | Snapshot Update of #70  | important=yes
 72  | single |       | fre 01 dec 2023 09:53:49 CET  | root   |  160,53 MiB | number    | Snapshot Update of #71  | important=yes
 73  | single |       | lør 02 dec 2023 23:30:05 CET  | root   |  134,33 MiB | number    | Snapshot Update of #72  | important=yes
 74  | single |       | søn 03 dec 2023 18:50:25 CET  | root   |  215,76 MiB | number    | Snapshot Update of #73  | important=yes
 78  | single |       | fre 08 dec 2023 11:18:33 CET  | root   |  864,74 MiB | number    | Snapshot Update of #72  | important=yes
 84  | single |       | fre 15 dec 2023 10:01:28 CET  | root   |  111,95 MiB | number    | Snapshot Update of #70  | important=yes
 85  | single |       | lør 16 dec 2023 22:16:39 CET  | root   |   29,77 MiB | number    | Snapshot Update of #84  | important=yes
149  | single |       | fre 29 mar 2024 22:25:09 CET  | root   |    2,91 GiB | number    | Snapshot Update of #148 | important=yes
194  | single |       | ons 12 jun 2024 09:56:06 CEST | root   |   39,32 MiB | number    | Snapshot Update of #193 |
195  | single |       | tor 13 jun 2024 10:56:50 CEST | root   |   25,96 MiB | number    | Snapshot Update of #194 |
196  | single |       | fre 14 jun 2024 10:01:19 CEST | root   |   27,41 MiB | number    | Snapshot Update of #195 |
197  | single |       | lør 15 jun 2024 13:01:40 CEST | root   |   38,36 MiB | number    | Snapshot Update of #196 |
198  | single |       | tir 18 jun 2024 11:38:38 CEST | root   |  130,94 MiB | number    | Snapshot Update of #197 |
199  | single |       | ons 19 jun 2024 10:13:19 CEST | root   |   48,00 KiB | number    | Snapshot Update of #198 |
200  | single |       | tor 20 jun 2024 09:51:59 CEST | root   |  934,87 MiB | number    | Snapshot Update of #199 |
201  | single |       | fre 21 jun 2024 10:48:01 CEST | root   |   16,00 KiB | number    | Snapshot Update of #85  |
202- | single |       | fre 21 jun 2024 11:07:27 CEST | root   |   16,00 KiB | number    | rollback backup of #201 | important=yes
203  | single |       | fre 21 jun 2024 11:07:27 CEST | root   |   48,00 KiB |           | writable copy of #199   |
204+ | single |       | fre 21 jun 2024 11:35:31 CEST | root   |  958,79 MiB | number    | Snapshot Update of #203 |

I’m only seeing snapshot #70-84 and #202 in the GRUB boot menu. All others are missing.

This is my /.snapshots/grub-snapshot.cfg;

if [ -z "$extra_cmdline" ]; then
  submenu  "Start bootloader from a read-only snapshot" {
    if [ -f "/.snapshots/202/grub-snapshot.cfg" ]; then
      source "/.snapshots/202/grub-snapshot.cfg"
    fi
    if [ -f "/.snapshots/85/grub-snapshot.cfg" ]; then
      source "/.snapshots/85/grub-snapshot.cfg"
    fi
    if [ -f "/.snapshots/84/grub-snapshot.cfg" ]; then
      source "/.snapshots/84/grub-snapshot.cfg"
    fi
    if [ -f "/.snapshots/78/grub-snapshot.cfg" ]; then
      source "/.snapshots/78/grub-snapshot.cfg"
    fi
    if [ -f "/.snapshots/74/grub-snapshot.cfg" ]; then
      source "/.snapshots/74/grub-snapshot.cfg"
    fi
    if [ -f "/.snapshots/73/grub-snapshot.cfg" ]; then
      source "/.snapshots/73/grub-snapshot.cfg"
    fi
    if [ -f "/.snapshots/72/grub-snapshot.cfg" ]; then
      source "/.snapshots/72/grub-snapshot.cfg"
    fi
    if [ -f "/.snapshots/71/grub-snapshot.cfg" ]; then
      source "/.snapshots/71/grub-snapshot.cfg"
    fi
    if [ -f "/.snapshots/70/grub-snapshot.cfg" ]; then
      source "/.snapshots/70/grub-snapshot.cfg"
    fi
    if [ x$snapshot_found != xtrue ]; then
      submenu "Not Found" { true; }
    fi
  }
fi

How do I fix this? It seems whenever the transactional-update.timertriggers a new update only second-latest snapshots get added.

2

Show output of

LC_ALL=en_US.UTF-8 LANGUAGE=en ls -l /.snapshots/*/grub-snapshot.cfg
3 
-rw-r-----. 1 root root 511 Jun 24 10:51 /.snapshots/202/grub-snapshot.cfg
-rw-r-----. 1 root root 511 Jun 24 10:51 /.snapshots/205/grub-snapshot.cfg
-rw-r-----. 1 root root 511 Jun 24 10:51 /.snapshots/208/grub-snapshot.cfg
-rw-r-----. 1 root root 506 Jun 24 10:51 /.snapshots/72/grub-snapshot.cfg
-rw-r-----. 1 root root 506 Jun 24 10:51 /.snapshots/73/grub-snapshot.cfg
-rw-r-----. 1 root root 506 Jun 24 10:51 /.snapshots/74/grub-snapshot.cfg
-rw-r-----. 1 root root 506 Jun 24 10:51 /.snapshots/78/grub-snapshot.cfg
-rw-r-----. 1 root root 506 Jun 24 10:51 /.snapshots/84/grub-snapshot.cfg
-rw-r-----. 1 root root 506 Jun 24 10:51 /.snapshots/85/grub-snapshot.cfg

You can see it has added new snapshots but the other snapshots are still missing.

4

You got it backwards. The other snapshots are missing in grub menu because grub-snapshot.cfg files are missing in these snapshots. As long as it works now I would just ignore it.

5

Yes - but no new snapshots are created in the GRUB read-only snapshots menu. This ONLY happens if I do a sudo transactional-update rollback. Sorry I did not mention that.

I really would like it to add new entries whenever a transactional-update is done. Just like it did originally when everything worked.

6

Start with showing (with English messages please)

zypper search -si snapper
7

Appreciate the help! Here you go;

Loading repository data...
Reading installed packages...

S  | Name                 | Type    | Version    | Arch   | Repository
---+----------------------+---------+------------+--------+------------------------
i  | grub2-snapper-plugin | package | 2.12-20.1  | noarch | openSUSE-Tumbleweed-Oss
i  | libsnapper7          | package | 0.11.0-1.1 | x86_64 | openSUSE-Tumbleweed-Oss
i+ | snapper              | package | 0.11.0-1.1 | x86_64 | openSUSE-Tumbleweed-Oss
8

That should be enough. AFAICT it creates grub-snapshot.cfg if

  • snapshot is read-only
  • the file /boot/grub2/grub.cfg inside this snapshot exists

Can you check it for the snapshots that are missing?

1 Like
9 
#
# DO NOT EDIT THIS FILE
#
# It is automatically generated by grub2-mkconfig using templates
# from /etc/grub.d and settings from /etc/default/grub
#

### BEGIN /etc/grub.d/00_header ###
set btrfs_relative_path="y"
export btrfs_relative_path
if [ -f ${config_directory}/grubenv ]; then
  load_env -f ${config_directory}/grubenv
elif [ -s $prefix/grubenv ]; then
  load_env
fi

if [ "${env_block}" ] ; then
  set env_block="(${root})${env_block}"
  export env_block
  load_env -f "${env_block}"
fi

if [ "${next_entry}" ] ; then
   set default="${next_entry}"
   set next_entry=
   save_env next_entry
   if [ "${env_block}" ] ; then
     save_env -f "${env_block}" next_entry
   fi
   set boot_once=true
else
   set default="${saved_entry}"
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}"
    if [ "${env_block}" ] ; then
      save_env -f "${env_block}" saved_entry
    else
      save_env saved_entry
    fi

  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 btrfs
search --no-floppy --fs-uuid --set=root 4571a217-be71-46a9-a2a1-793b1c20ba18
    font="/usr/share/grub2/unicode.pf2"
fi

if loadfont $font ; then
  if [ "${grub_platform}" = "efi" ]; then
    echo "Please press 't' to show the boot menu on this console"
  fi

  set gfxmode=auto
  load_video
  insmod gfxterm
fi
terminal_input console

for i in gfxterm; do
  if [ x${use_append} = xtrue ]; then
     terminal_output --append $i
  elif terminal_output $i; then
     use_append=true;
  fi
done

insmod part_gpt
insmod btrfs
search --no-floppy --fs-uuid --set=root 4571a217-be71-46a9-a2a1-793b1c20ba18
insmod gfxmenu
loadfont ($root)/boot/grub2/themes/openSUSE/DejaVuSans-Bold14.pf2
loadfont ($root)/boot/grub2/themes/openSUSE/DejaVuSans10.pf2
loadfont ($root)/boot/grub2/themes/openSUSE/DejaVuSans12.pf2
loadfont ($root)/boot/grub2/themes/openSUSE/ascii.pf2
insmod png
set theme=($root)/boot/grub2/themes/openSUSE/theme.txt
export theme
if [ x${boot_once} = xtrue ]; then
  set timeout=0
elif [ x$feature_timeout_style = xy ] ; then
  set timeout_style=menu
  set timeout=8
# Fallback normal timeout code in case the timeout_style feature is
# unavailable.
else
  set timeout=8
fi
if [ -n "$extra_cmdline" ]; then
  menuentry "Help on bootable snapshot #$snapshot_num" {
    echo "Select the default entry of the snapshot boot menu."
    echo "Examine the snapshot, and if it's OK,"
    echo "   run 'snapper rollback' and reboot."
    echo "See 'System Rollback by Booting from Snapshots'"
    echo "   in the manual for more information."
    echo "  ** Hit Any Key to return to boot menu **  "
    read
  }
fi
### END /etc/grub.d/00_header ###

### BEGIN /etc/grub.d/01_suse_ro_root ###
# On read-only root file systems /boot/writable provides a writeable
# subvolume, e.g. to store the GRUB environment block.
set boot_rw_subvol=/boot/writable
if [ "${root}" != "host" ]; then
  btrfs-mount-subvol "(${root})" "${boot_rw_subvol}" "/@/boot/writable"
fi

# Use above location to load GRUB environment variables
if [ -f ${boot_rw_subvol}/grubenv ]; then
  load_env -f ${boot_rw_subvol}/grubenv
fi
# btrfs header always beats config file
if [ "${env_block}" ] ; then
  load_env -f "${env_block}"
fi
### END /etc/grub.d/01_suse_ro_root ###

### BEGIN /etc/grub.d/05_crypttab ###
### END /etc/grub.d/05_crypttab ###

### BEGIN /etc/grub.d/05_health_check ###
# Only consider showing a fallback entry on the top level menu
if [ -z "${chosen}" -a -z "${boot_once}" ]; then
  # If flag is set on boot the last start seems to have failed - the flag
  # should have been cleared by userspace
  if [ "${health_checker_flag}" -ge 1 ]; then
    # Reset flag; it will be set again by a supported menu entry.
    # This prevents getting stuck in a loop when booting an entry that
    # doesn't support this flag yet.
    health_checker_flag=0
    if [ "${env_block}" ] ; then
      save_env -f "${env_block}" health_checker_flag
    fi
    # Try to mount /var/lib/misc from know subvolume locations
    btrfs-mount-subvol (${root}) /var /@/var
    btrfs-mount-subvol (${root}) /var/lib/misc /@/var/lib/misc

    if [ -e /var/lib/misc/health-checker.state ]; then
      source /var/lib/misc/health-checker.state
      if [ -n ${LAST_WORKING_SNAPSHOT} ]; then
        LAST_WORKING_SNAPSHOTS=${LAST_WORKING_SNAPSHOT}
      fi
    fi

    # Backwards compatibility (for state file created with old
    # health-checker versions):
    # Due to boo#1048088 btrfs-list-subvols currently doesn't give a list of
    # subvolumes, so it's not possible to map
    # /var/lib/misc/health-checker.state to a snapshot directory; use
    # transactional-update state file as a workaround.
    if [ -z ${LAST_WORKING_SNAPSHOTS} -a -e /var/lib/misc/transactional-update.state ]; then
      source /var/lib/misc/transactional-update.state
    fi

    if [ -n "${LAST_WORKING_SNAPSHOTS}" ]; then
      btrfs-mount-subvol ($root) /.snapshots @/.snapshots
      for snapshot in ${LAST_WORKING_SNAPSHOTS}; do
        if [ -e "/.snapshots/${snapshot}/grub-snapshot.cfg" ]; then
          menuentry "Previous boot failed; booting snapshot ${snapshot}" { true; }
          source /.snapshots/${snapshot}/grub-snapshot.cfg
          menuentry "________________" { true; }
          set default=1
          break
        fi;
      done
    fi
  fi
fi
### END /etc/grub.d/05_health_check ###

### BEGIN /etc/grub.d/10_linux ###
menuentry 'openSUSE MicroOS'  --class opensuse --class gnu-linux --class gnu --class os $menuentry_id_option 'gnulinux-simple-4571a217-be71-46a9-a2a1-793b1c20ba18' {
	health_checker_flag=1
	if [ "${env_block}" ] ; then
		save_env -f "${env_block}" health_checker_flag
	fi
	load_video
	set gfxpayload=keep
	insmod gzio
	insmod part_gpt
	insmod btrfs
	search --no-floppy --fs-uuid --set=root 4571a217-be71-46a9-a2a1-793b1c20ba18
	echo	'Loading Linux 6.9.4-1-default ...'
	linux	/boot/vmlinuz-6.9.4-1-default root=UUID=4571a217-be71-46a9-a2a1-793b1c20ba18  ${extra_cmdline} splash=silent swapaccount=1 mitigations=auto quiet security=selinux selinux=1 enforcing=0
	echo	'Loading initial ramdisk ...'
	initrd	/boot/initrd-6.9.4-1-default
}
submenu 'Advanced options for openSUSE MicroOS' --hotkey=1 $menuentry_id_option 'gnulinux-advanced-4571a217-be71-46a9-a2a1-793b1c20ba18' {
	menuentry 'openSUSE MicroOS, with Linux 6.9.4-1-default' --hotkey=2 --class opensuse --class gnu-linux --class gnu --class os $menuentry_id_option 'gnulinux-6.9.4-1-default-advanced-4571a217-be71-46a9-a2a1-793b1c20ba18' {
		load_video
		set gfxpayload=keep
		insmod gzio
		insmod part_gpt
		insmod btrfs
		search --no-floppy --fs-uuid --set=root 4571a217-be71-46a9-a2a1-793b1c20ba18
		echo	'Loading Linux 6.9.4-1-default ...'
		linux	/boot/vmlinuz-6.9.4-1-default root=UUID=4571a217-be71-46a9-a2a1-793b1c20ba18  ${extra_cmdline} splash=silent swapaccount=1 mitigations=auto quiet security=selinux selinux=1 enforcing=0
		echo	'Loading initial ramdisk ...'
		initrd	/boot/initrd-6.9.4-1-default
	}
	menuentry 'openSUSE MicroOS, with Linux 6.9.4-1-default (recovery mode)' --hotkey=3 --class opensuse --class gnu-linux --class gnu --class os $menuentry_id_option 'gnulinux-6.9.4-1-default-recovery-4571a217-be71-46a9-a2a1-793b1c20ba18' {
		load_video
		set gfxpayload=keep
		insmod gzio
		insmod part_gpt
		insmod btrfs
		search --no-floppy --fs-uuid --set=root 4571a217-be71-46a9-a2a1-793b1c20ba18
		echo	'Loading Linux 6.9.4-1-default ...'
		linux	/boot/vmlinuz-6.9.4-1-default root=UUID=4571a217-be71-46a9-a2a1-793b1c20ba18 single  ${extra_cmdline}
		echo	'Loading initial ramdisk ...'
		initrd	/boot/initrd-6.9.4-1-default
	}
}

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

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

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

### BEGIN /etc/grub.d/25_bli ###
if [ "$grub_platform" = "efi" ]; then
  insmod bli
fi
### END /etc/grub.d/25_bli ###

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

### BEGIN /etc/grub.d/30_uefi-firmware ###
if [ "$grub_platform" = "efi" ]; then
	menuentry 'UEFI Firmware Settings' $menuentry_id_option 'uefi-firmware' {
                fwsetup --is-supported
                if [ "$?" = 0 ]; then
                        fwsetup
                else
                        echo "Your firmware doesn't support setup menu entry from a boot loader"
                        echo "Press any key to return ..."
                        read
                fi
        }
fi
### END /etc/grub.d/30_uefi-firmware ###

### BEGIN /etc/grub.d/35_fwupd ###
### END /etc/grub.d/35_fwupd ###

### BEGIN /etc/grub.d/40_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.
### END /etc/grub.d/40_custom ###

### 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 ###

### BEGIN /etc/grub.d/80_suse_btrfs_snapshot ###
btrfs-mount-subvol ($root) /.snapshots @/.snapshots
if [ -f "/.snapshots/grub-snapshot.cfg" ]; then
  source "/.snapshots/grub-snapshot.cfg"
fi
### END /etc/grub.d/80_suse_btrfs_snapshot ###

### BEGIN /etc/grub.d/83_health_check_marker ###
# Prevent infinite waiting for disk if drivers in initrd are broken
extra_cmdline="${extra_cmdline} rd.timeout=60 rd.retry=45"
### END /etc/grub.d/83_health_check_marker ###

### BEGIN /etc/grub.d/90_persistent ###
### END /etc/grub.d/90_persistent ###

### BEGIN /etc/grub.d/95_textmode ###
if [ "${grub_platform}" = "efi" ]; then
  # On EFI systems we can only have graphics *or* serial, so allow the user
  # to switch between the two
  hiddenentry 'Text mode' --hotkey 't' {
    set textmode=true
    terminal_output console
  }
fi
### END /etc/grub.d/95_textmode ###

It seem completely normal.

10

Now I’m actually in even more trouble - my latest snapshot fails when I boot with emergency mode activating. Almost every time. I can still boot older snapshots that I have thankfully.

Is is safe to use; btrfs check --repair /dev/nvme0n1p2 in emergency mode?
It fails to mount all of the below filesystems.

These are my mounted filesystems;

/dev/nvme0n1p2 on / type btrfs (ro,relatime,seclabel,ssd,discard=async,space_cache=v2,subvolid=481,subvol=/@/.snapshots/214/snapshot)
/dev/nvme0n1p2 on /root type btrfs (rw,relatime,seclabel,ssd,discard=async,space_cache=v2,subvolid=260,subvol=/@/root)
/dev/nvme0n1p2 on /var type btrfs (rw,relatime,seclabel,ssd,discard=async,space_cache=v2,subvolid=257,subvol=/@/var)
/dev/nvme0n1p2 on /.snapshots type btrfs (rw,relatime,seclabel,ssd,discard=async,space_cache=v2,subvolid=266,subvol=/@/.snapshots)
/dev/nvme0n1p2 on /boot/grub2/i386-pc type btrfs (rw,relatime,seclabel,ssd,discard=async,space_cache=v2,subvolid=265,subvol=/@/boot/grub2/i386-pc)
/dev/nvme0n1p2 on /boot/grub2/x86_64-efi type btrfs (rw,relatime,seclabel,ssd,discard=async,space_cache=v2,subvolid=264,subvol=/@/boot/grub2/x86_64-efi)
/dev/nvme0n1p2 on /boot/writable type btrfs (rw,relatime,seclabel,ssd,discard=async,space_cache=v2,subvolid=263,subvol=/@/boot/writable)
/dev/nvme0n1p2 on /home type btrfs (rw,relatime,seclabel,ssd,discard=async,space_cache=v2,subvolid=262,subvol=/@/home)
/dev/nvme0n1p2 on /opt type btrfs (rw,relatime,seclabel,ssd,discard=async,space_cache=v2,subvolid=261,subvol=/@/opt)
/dev/nvme0n1p2 on /srv type btrfs (rw,relatime,seclabel,ssd,discard=async,space_cache=v2,subvolid=259,subvol=/@/srv)
/dev/nvme0n1p2 on /usr/local type btrfs (rw,relatime,seclabel,ssd,discard=async,space_cache=v2,subvolid=258,subvol=/@/usr/local)
/dev/nvme0n1p1 on /boot/efi type vfat (rw,relatime,fmask=0022,dmask=0022,codepage=437,iocharset=iso8859-1,shortname=mixed,utf8,errors=remount-ro)
11

After investigating this further it seems the issue is that relabel of filesystem fails.

12

I’m just writing to report that my issues have gone away.

The relabeling issue is gone; not completely sure why it happened but maybe the /etc/selinux/.autorelabel was created.

The issue with the missing snapshots is still a mystery but thankfully new snapshots now appear normally.

@arvidjaar thank you for trying to help! :wink:

13

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