/boot is 100% full on RHEL 8 when using XFS

Linux
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1

I’m pretty knowledgeable with Linux, yet I don’t know what to do, but rebuild the system.
Can you help?
On RHEL 8.4 system
System disk is 119 GB
/boot filesystem reside on 1GB disk partition.
/boot filesystem is xfs.
Counting files sum up with about 190 MB only.

What is the possible cause?
How to fix the situation?

2

What does df and du says?

df -TH /boot
du -ch /boot

Can you remove older kernel? Something like:

sudo dnf list --installed kernel

Then remove older kernel

sudo dnf remove --oldinstallonly
# keep 2 number of kernels should be retained
sudo dnf remove --oldinstallonly --setopt installonly_limit=2 kernel
3

[root@redwood ~]# du -ch /boot
0 /boot/efi/EFI/redhat
0 /boot/efi/EFI
0 /boot/efi
3.1M /boot/grub2/i386-pc
2.5M /boot/grub2/fonts
5.5M /boot/grub2
1.1M /boot/extlinux
16K /boot/loader/entries
16K /boot/loader
185M /boot
185M total
[root@redwood ~]# df -TH /boot
Filesystem Type Size Used Avail Use% Mounted on
/dev/sdb1 xfs 1.1G 1.1G 0 100% /boot

I manually removed the large files of 4.18.0-305.el8 from /boot. My intention was to keep the original installation and the last one.

[root@redwood ~]# dnf list --installed kernel
Updating Subscription Management repositories.
Installed Packages
kernel.x86_64 4.18.0-240.el8 @anaconda
kernel.x86_64 4.18.0-305.el8 @rhel-8-for-x86_64-baseos-rpms
kernel.x86_64 4.18.0-305.7.1.el8_4 @rhel-8-for-x86_64-baseos-rpms

4

Run xfs_estimate on /boot and see what it says. My best guess now is some sort of xfs issue. You need to look into xfs_check and then mostly xfs_repair to fix the issue. Run all commands in single user mode.

5

Thank you, your advise helped. The problem was that it has to be done in single user mode. That solved the issue.

Avigdor