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Old 10-15-2012, 03:52 AM   #1
polch
LQ Newbie
 
Registered: Sep 2010
Posts: 22

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[PATCH] initrd.img : probe md devices with dynamic minor number.


Hi.

The raid arrays with dynamic minor number will be hardly identified for installation. For instance if we create the raid array with
Code:
mdadm --create /dev/md/home --level 1 --raid-devices 2 /dev/sda2 /dev/sdb2
the devices won't be visible in the installer.

I don't know if i'm on the right track, but here is a suggestion for the probe script of the initrd.img.

Code:
--- sbin/probe.bak      2012-10-15 10:24:50.058021543 +0200
+++ sbin/probe  2012-10-15 10:15:26.972019923 +0200
@@ -142,7 +142,13 @@
 
 list_md() {
   if ( is_swap "/dev/$2" ); then TYPE="Linux swap"; else TYPE="Linux"; fi
-  echo "/dev/$2  1 2 $1 kk $TYPE" >> $TMP/SeTfdisk
+  ARRAY_NAME=`mdadm --detail /dev/$2 | grep "Name : " | sed -e "s/ *Name : //"`
+  if [ "$ARRAY_NAME" = "" ]; then
+    ARRAY_NAME="$2"
+  else
+    ARRAY_NAME="md/$ARRAY_NAME"
+  fi
+  echo "/dev/$ARRAY_NAME  1 2 $1 kk $TYPE" >> $TMP/SeTfdisk
 }
 
 list_lvm() {
P.S. : The purpose of these messages is not so much to solve a personal problem, but try to find an official way of doing an "out of the box working" raid installation. The history of messages for this problem :
Install on raid setup and /dev/md127
http://www.linuxquestions.org/questi...ab-4175431267/
RAID howto discussion on the slackdocs ml

Last edited by polch; 10-15-2012 at 06:45 AM. Reason: Error in patch /dev/$ARRAY_NAME -> /dev/md/$ARRAY_NAME
 
Old 10-18-2012, 02:46 PM   #2
mRgOBLIN
Slackware Contributor
 
Registered: Jun 2002
Location: New Zealand
Distribution: Slackware
Posts: 999

Rep: Reputation: 227Reputation: 227Reputation: 227
Thanks polch.

Noted and added to my Todo list.
 
Old 10-19-2012, 01:25 AM   #3
polch
LQ Newbie
 
Registered: Sep 2010
Posts: 22

Original Poster
Rep: Reputation: 0
I thank you for dealing with this problem.

However, I'm not sure about my solution.
 
  


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