overlayroot和grub2 - grub菜单总是显示

Question

我在/etc/overlayroot.conf中使用配置为overlayroot=tmpfs:swap=1,recurse=0的overlayroot。

overlayroot正在按预期工作。我成功地更新了grub，简单地禁用了overlayroot，然后按我的意愿重新启用它(我正在设置一个映像，因此我正在进行一些更改)

问题是，在重新启动时，无论我如何设置grub配置，我都会看到grub菜单出现30多个。哦，我要说的是，每次我运行更新-grub并且不是只读模式。

这是我的grub配置。我也试着没有用GRUB_DISABLE_OS_PROBER=true

# 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_HIDDEN_TIMEOUT=0
GRUB_HIDDEN_TIMEOUT_QUIET=true
GRUB_TIMEOUT=0
GRUB_DISTRIBUTOR=`lsb_release -i -s 2> /dev/null || echo Debian`
GRUB_CMDLINE_LINUX_DEFAULT="quiet splash"
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"

# Disable OS Prober for selecting dual boot scenarios.
GRUB_DISABLE_OS_PROBER=true

我认为所发生的是，覆盖根改变了挂载点。因此，当overlayroot被禁用时，它不显示grub菜单就启动，而启用它时，它会看到更多的挂载点，并决定加载菜单。

在这篇文章中，我也尝试了接受的答案：https://serverfault.com/questions/549166/how-to-update-grub-on-a-system-running-overlayroot，但是我仍然得到了错误‘/usr/sbin/grub-探测:错误:未能获得’/dev/mmcblk0p2‘的规范路径。

Answer 1

好的，解决了，禁用overlayroot &添加以下内容：

/etc/default/grub

GRUB_RECORDFAIL_TIMEOUT=$GRUB_TIMEOUT

然后更新grub

update-grub

重新启用overlayroot并重新启动