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Adding grub2 mkconfig support patch

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Added simply for convenience until this, or an equivilant, change
is merged in the upstream grub2 source.

Signed-off-by: Brian Behlendorf <behlendorf1@llnl.gov>
Issue #847
This commit is contained in:
Manuel Amador (Rudd-O) 2012-07-23 12:26:17 -07:00 committed by Brian Behlendorf
parent c171ea71bb
commit 7eebaff409
1 changed files with 31 additions and 0 deletions
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31
patches/grub-mkconfig-zfs-support.diff Normal file
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@ -0,0 +1,31 @@
diff -up ./util/grub-mkconfig.in.original ./util/grub-mkconfig.in
--- ./util/grub-mkconfig.in.original 2012-03-27 13:03:49.475388000 -0700
+++ ./util/grub-mkconfig.in 2012-03-27 13:06:38.948080000 -0700
@@ -140,9 +140,24 @@ if test -e ${GRUB_PREFIX}/device.map ; t
${grub_mkdevicemap}
fi
-# Device containing our userland. Typically used for root= parameter.
-GRUB_DEVICE="`${grub_probe} --target=device /`"
-GRUB_DEVICE_UUID="`${grub_probe} --device ${GRUB_DEVICE} --target=fs_uuid 2> /dev/null`" || true
+# Attempt to detect if the root file system is in ZFS first
+unset GRUB_DEVICE
+unset GRUB_DEVICE_BOOT
+getzfsgrubdevice() {
+ mount | while read dev dummy mntpnt dummy2 fstype rest ; do
+ if [ -n "$GRUB_DEVICE" ] ; then break ; fi
+ if [ "$fstype" != "zfs" ] ; then continue ; fi
+ if [ "$mntpnt" != "/" ] ; then continue ; fi
+ GRUB_DEVICE=`fstab-decode echo "$dev"`
+ GRUB_DEVICE="ZFS=$GRUB_DEVICE" ; echo "$GRUB_DEVICE" ; break
+ done
+}
+GRUB_DEVICE=`getzfsgrubdevice`
+if [ -z "$GRUB_DEVICE" ] ; then
+ # Device containing our userland. Typically used for root= parameter.
+ GRUB_DEVICE="`${grub_probe} --target=device /`"
+ GRUB_DEVICE_UUID="`${grub_probe} --device ${GRUB_DEVICE} --target=fs_uuid 2> /dev/null`" || true
+fi
# Device containing our /boot partition. Usually the same as GRUB_DEVICE.
GRUB_DEVICE_BOOT="`${grub_probe} --target=device /boot`"