For devices with filesystem, udev /dev/disk/by-uuid/* links are usually
reliable. So improve the get_persistent_dev() by using by-uuid/* firstly,
and fallback to use by-id/*
An exception is multipath devices, child and top layer device may have
same uuid. As dm devices maintain /dev/mapper/* as persistent names, just
do not doing converting for them.
Signed-off-by: Dave Young <dyoung@xxxxxxxxxx>
---
dracut-functions.sh | 5 ++++-
1 file changed, 4 insertions(+), 1 deletion(-)
--- dracut.orig/dracut-functions.sh
+++ dracut/dracut-functions.sh
@@ -242,10 +242,13 @@ fi
get_persistent_dev() {
local i _tmp _dev
+ # /dev/mapper/* suppose to be persistent
+ [[ $1 =~ /dev/mapper ]] && echo $1 && return
+
_dev=$(udevadm info --query=name --name="$1" 2>/dev/null)
[ -z "$_dev" ] && return
- for i in /dev/disk/by-id/*; do
+ for i in /dev/disk/by-uuid/* /dev/disk/by-id/*; do
_tmp=$(udevadm info --query=name --name="$i" 2>/dev/null)
if [ "$_tmp" = "$_dev" ]; then
echo $i
--
To unsubscribe from this list: send the line "unsubscribe initramfs" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at http://vger.kernel.org/majordomo-info.html
