Arch Linux

kekoso

Member

Registered: 2023-02-04

Posts: 3

Boot problems after update

Hello, quite often after an update with -Syu I encounter a system boot error: can't mount /boot. Just go as root and update the kernel, after which everything works fine. fstab is generated via genfstab and usually all system works. How do I troubleshoot system start issues that occur from time to time? Cause it's annoying from time to time. Thanks.

d.ALT

Member

Registered: 2019-05-10

Posts: 959

Re: Boot problems after update

Post here:

$ lsblk -f

$ cat /etc/fstab

$ cat /proc/cmdline

$ mount | grep -E '^/dev/(s|n)' | sort

$ ls -l /boot

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<49,17,III,I>    Fama di loro il mondo esser non lassa;
<50,17,III,I>    misericordia e giustizia li sdegna:
<51,17,III,I>    non ragioniam di lor, ma guarda e passa.

kekoso

Member

Registered: 2023-02-04

Posts: 3

Re: Boot problems after update

[anatoly@ThinkPad ~]$ lsblk -f
NAME FSTYPE FSVER LABEL UUID                                 FSAVAIL FSUSE% MOUNTPOINTS
sda                                                                         
├─sda1
│    vfat   FAT32       EE7A-825A                             329,6M    36% /boot/efi
│                                                                           /boot
├─sda2
│    ext4   1.0         ff8ddcca-b4f2-4bef-8ab3-5be9bde42ee0    4,9G    78% /
├─sda3
│    ext4   1.0         28cc85ed-f463-4273-b931-ad1a6d52e13b    8,9G    84% /home
└─sda4
     swap   1           ea8e56c4-5c37-4fd0-97f0-e73eb1428cad                [SWAP]
[anatoly@ThinkPad ~]$ cat /etc/fstab
# Static information about the filesystems.
# See fstab(5) for details.

# <file system> <dir> <type> <options> <dump> <pass>
# <device>        <dir>        <type>        <options>        <dump> <fsck>
/dev/sda1         /boot        vfat          defaults         0      2
/dev/sda2         /            ext4          defaults         0      1
/dev/sda3         /home        ext4          defaults         0      2
/dev/sda4         none         swap          defaults         0      0
# /dev/sda2
UUID=ff8ddcca-b4f2-4bef-8ab3-5be9bde42ee0	/         	ext4      	rw,relatime	0 1

# /dev/sda1
UUID=EE7A-825A      	/boot/efi 	vfat      	rw,relatime,fmask=0022,dmask=0022,codepage=437,iocharset=ascii,shortname=mixed,utf8,errors=remount-ro	0 2

# /dev/sda3
UUID=28cc85ed-f463-4273-b931-ad1a6d52e13b	/home     	ext4      	rw,relatime	0 2

# /dev/sda4
UUID=ea8e56c4-5c37-4fd0-97f0-e73eb1428cad	none      	swap      	defaults  	0 0

# /dev/sda2
UUID=ff8ddcca-b4f2-4bef-8ab3-5be9bde42ee0	/         	ext4      	rw,relatime	0 1

# /dev/sda3
UUID=28cc85ed-f463-4273-b931-ad1a6d52e13b	/home     	ext4      	rw,relatime	0 2

# /dev/sda1
UUID=EE7A-825A      	/boot/efi 	vfat      	rw,relatime,fmask=0022,dmask=0022,codepage=437,iocharset=ascii,shortname=mixed,utf8,errors=remount-ro	0 2

# /dev/sda4
UUID=ea8e56c4-5c37-4fd0-97f0-e73eb1428cad	none      	swap      	defaults  	0 0

[anatoly@ThinkPad ~]$ cat /proc/cmdline
BOOT_IMAGE=/boot/vmlinuz-linux root=UUID=ff8ddcca-b4f2-4bef-8ab3-5be9bde42ee0 rw loglevel=3 quiet
[anatoly@ThinkPad ~]$ mount | grep -E '^/dev/(s|n)' | sort
/dev/sda1 on /boot/efi type vfat (rw,relatime,fmask=0022,dmask=0022,codepage=437,iocharset=ascii,shortname=mixed,utf8,errors=remount-ro)
/dev/sda1 on /boot type vfat (rw,relatime,fmask=0022,dmask=0022,codepage=437,iocharset=ascii,shortname=mixed,utf8,errors=remount-ro)
/dev/sda2 on / type ext4 (rw,relatime)
/dev/sda3 on /home type ext4 (rw,relatime)
[anatoly@ThinkPad ~]$ ls -l /boot
итого 185608
drwxr-xr-x 3 root root     4096 янв  1  1970 EFI
-rwxr-xr-x 1 root root 68603962 фев  4 11:44 initramfs-linux-fallback.img
-rwxr-xr-x 1 root root 13995484 фев  4 11:43 initramfs-linux.img
-rwxr-xr-x 1 root root 70049731 фев  4 11:44 initramfs-linux-zen-fallback.img
-rwxr-xr-x 1 root root 14156076 фев  4 11:44 initramfs-linux-zen.img
-rwxr-xr-x 1 root root 11208160 фев  4 11:43 vmlinuz-linux
-rwxr-xr-x 1 root root 12031488 фев  4 11:43 vmlinuz-linux-zen
[anatoly@ThinkPad ~]$ 

d.ALT

Member

Registered: 2019-05-10

Posts: 959

Re: Boot problems after update

What did you do to your poor ArchLinux? Don't you feel bad for it?

Your fstab is a mess, I'm really pleasantly surprised that your system is even able to boot!!
You're mounting sda1 recursively into both /boot and /boot/efi

Please, boot off from ArchLinux USB to enter into Live Enviroment, make backups and fix your fstab accordingly in order to mount sda1 (BOOT+ESP) into /boot only.

Ask here for any doubts.

---

<49,17,III,I>    Fama di loro il mondo esser non lassa;
<50,17,III,I>    misericordia e giustizia li sdegna:
<51,17,III,I>    non ragioniam di lor, ma guarda e passa.

Head_on_a_Stick

Member

From: The Wirral

Registered: 2014-02-20

Posts: 9,003

Website

Re: Boot problems after update

I think the problem may have been caused by running genfstab multiple times. The installation guide directs the output using ">>", which would append any further invocations. The command should really be idempotent but I suppose the guide only says to run it once.

So the OP should probably just use ">" instead of ">>" when running genfstab from the live ISO (with the partitions correctly mounted ofc) to allow it to overwrite instead of append. The header comments will be lost but they're not really needed.

---

Jin, Jîyan, Azadî

kekoso

Member

Registered: 2023-02-04

Posts: 3

Re: Boot problems after update

Yes, you are all right, it was strange, I made a new fstab, fixed the system, all work, I think the problem is solved. Thanks a lot.