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fix(steps-guix-jump): harden linux64 kexec handoff

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vxtls 2026-03-20 08:03:02 -04:00
parent eb44754931
commit 3817181838
1 changed files with 11 additions and 3 deletions
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14
steps-guix/jump/linux64.sh
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@ -7,6 +7,16 @@ new_kernel="/boot/vmlinuz-linux64"
current_kernel="/boot/vmlinuz" current_kernel="/boot/vmlinuz"
backup_kernel="/boot/vmlinuz-32bit.backup" backup_kernel="/boot/vmlinuz-32bit.backup"
quiesce_filesystem_for_kexec() {
if command -v dhcpcd >/dev/null 2>&1; then
dhcpcd -x >/dev/null 2>&1 || true
fi
sync
echo s > /proc/sysrq-trigger || true
echo u > /proc/sysrq-trigger || true
mount -o remount,ro / || true
}
if [ ! -f "${new_kernel}" ]; then if [ ! -f "${new_kernel}" ]; then
echo "Missing new kernel image: ${new_kernel}" >&2 echo "Missing new kernel image: ${new_kernel}" >&2
exit 1 exit 1
@ -26,7 +36,5 @@ else
kexec -l "${current_kernel}" --console-serial \ kexec -l "${current_kernel}" --console-serial \
--append="console=ttyS0 root=/dev/sda1 init=/init rw rootwait consoleblank=0" --append="console=ttyS0 root=/dev/sda1 init=/init rw rootwait consoleblank=0"
fi fi
sync quiesce_filesystem_for_kexec
echo u > /proc/sysrq-trigger || true
mount -o remount,ro / || true
kexec -e kexec -e