Note: This bug is displayed in read-only format because
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Description of problem:
The /boot directory in RHEL CoreOS will soon be mounted read-only after version 4.7. Because of this, kdump will not be able to place the generated kdump initrd next to the kernel image in `KDUMP_BOOTDIR`.
Possible solutions would be to make the location of the generated kdump initrd configurable, or to remount /boot writable whenever kdump needs to write to it.
How reproducible:
Always
Steps to Reproduce:
1. systemctl start kdump.service
Actual results:
kdump does not have permission to write to the /boot directory so it cannot build the kdump initramfs.
Expected results:
Crash recovery kernel arming succeeds.
Additional info:
https://issues.redhat.com/browse/GRPA-3209
The v3 patch is ready for merge into rhel, however, there is a selinux problem [1] which need to be fixed first.
The initramfs can be created in /var/lib/kdump successfully by v3 patch, but the selinux policy refuses kexec-tools to load it,
thus fails the kdump arming. So this bug is blocked by bz1951323
[1] https://github.com/fedora-selinux/selinux-policy/issues/727
Since the problem described in this bug report should be
resolved in a recent advisory, it has been closed with a
resolution of ERRATA.
For information on the advisory (Low: kexec-tools security, bug fix, and enhancement update), and where to find the updated
files, follow the link below.
If the solution does not work for you, open a new bug report.
https://access.redhat.com/errata/RHSA-2021:4404