2016-03-04 20:28:21 +00:00
|
|
|
From 6ea648a482015d3379acbe4f6f78991e3e923c47 Mon Sep 17 00:00:00 2001
|
2016-03-04 18:32:29 +00:00
|
|
|
From: Don Zickus <dzickus@redhat.com>
|
|
|
|
|
Date: Wed, 22 Jul 2015 13:59:55 -0400
|
2016-03-04 20:28:21 +00:00
|
|
|
Subject: [PATCH 71/85] ppc64le sync mkconfig to disk (#1212114)
|
2016-03-04 18:32:29 +00:00
|
|
|
|
|
|
|
|
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
|
2016-03-04 19:24:31 +00:00
|
|
|
index fb87247..73a18f7 100644
|
2016-03-04 18:32:29 +00:00
|
|
|
--- a/util/grub-mkconfig.in
|
|
|
|
|
+++ b/util/grub-mkconfig.in
|
2016-03-04 19:24:31 +00:00
|
|
|
@@ -294,3 +294,12 @@ fi
|
2016-03-04 18:32:29 +00:00
|
|
|
|
|
|
|
|
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
|
|
|
|
|
|
