From fab623aa983f7e713cb27024935191a57c164840 Mon Sep 17 00:00:00 2001 From: Don Zickus Date: Wed, 22 Jul 2015 13:59:55 -0400 Subject: [PATCH 68/85] ppc64le sync mkconfig to disk (#1212114) If creating a new grub2 entry using grub2-mkconfig, the entry is not immediately sync'd to disk. If a crash happens before the writeback, the subsequent reboot fails because the grub2.cfg is corrupted. Address this by forcing all the changes (mainly the fs meta data) to disk before finishing the grub2 conf changes. Tested by 'grub2-mkconfig -o /etc/grub22.cfg; echo c > /proc/sysrq-trigger'. Before, the machine would panic and on reboot be stuck without a grub.cfg to read. After, works as expected. Resolves: rhbz#1212114 --- util/grub-mkconfig.in | 9 +++++++++ 1 file changed, 9 insertions(+) diff --git a/util/grub-mkconfig.in b/util/grub-mkconfig.in index 435c1cd..54732a2 100644 --- a/util/grub-mkconfig.in +++ b/util/grub-mkconfig.in @@ -293,3 +293,12 @@ fi gettext "done" >&2 echo >&2 + +# make sure changes make it to the disk. +# if /boot is a mountpoint, force the meta data on disk +# to by-pass writeback delay. +# PPC64LE-only to deal with Petitboot issues +ARCH=$(uname -m) +if [ "${ARCH}" = "ppc64le" ]; then + sync && mountpoint -q /boot &&fsfreeze -f /boot && fsfreeze -u /boot +fi -- 2.5.0