Sorry, but I realized after reading ...
http://lists.debian.org/debian-boot/2004/06/msg02301.html
... that what I was doing was a little overkill.
Here is a better approach. I've tested it both on ext3 (to ensure I
haven't broken something when xfs_freeze exists, but the filesystem is
not xfs), and xfs.
Here is xfs_freeze.diff, suitable for replacing xfs_freeze.diff that is
in debian/patches of the source package.
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--- svn.old/util/grub-install.in 2005-04-25 11:47:21.563643409 -0600
+++ svn/util/grub-install.in 2005-04-25 11:51:26.828576206 -0600
@@ -81,6 +81,17 @@
EOF
}
+# Usage: xfs_hack
+# Routine to flush xfs filesystem log (sync doesn't do this)
+# sleep is needed to give time for the log to be flushed
+xfs_hack () {
+ if which xfs_freeze >/dev/null ; then
+ xfs_freeze -f ${grubdir} 2>/dev/null
+ sleep 1
+ xfs_freeze -u ${grubdir} 2>/dev/null
+ fi
+}
+
# Usage: convert os_device
# Convert an OS device to the corresponding GRUB drive.
# This part is OS-specific.
@@ -336,6 +347,7 @@
# Create a safe temporary file.
test -n "$mklog" && log_file=`$mklog`
+ xfs_hack
$grub_shell --batch $no_floppy --device-map=$device_map <<EOF >$log_file
quit
EOF
@@ -426,6 +438,7 @@
count=5
tmp=`echo $file | sed "s|^${grubdir}|${grub_prefix}|"`
while test $count -gt 0; do
+ xfs_hack
$grub_shell --batch $no_floppy --device-map=$device_map <<EOF >$log_file
dump ${root_drive}${tmp} ${img_file}
quit
@@ -451,6 +464,7 @@
test -n "$mklog" && log_file=`$mklog`
# Now perform the installation.
+xfs_hack
$grub_shell --batch $no_floppy --device-map=$device_map <<EOF >$log_file
root $root_drive
setup $force_lba --stage2=$grubdir/stage2 --prefix=$grub_prefix $install_drive
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