Thanks, I have tried changing the partitions type to 0xFD and the auto detects kicked in and LVM still worked like a charm. However I found this from mailling list archive /* start quote */ From: Luca Berra <bluca comedia it> To: linux-lvm redhat com Subject: Re: Re: putting lvm autodetect into the kernel ala md Date: Fri, 1 Apr 2005 19:41:22 +0200 quote Neil Brown back in july 2001 "autorun/autodetect just doesn't belong in the kernel. It should be done in user space. The only time the kernel should assemble a raid array itself is for the root device, and this is best done with md=0,/dev/whatever,etc If I could start with a clean slate, I would rip out the autodetect stuff completely. But lots of people are depending on it so I cannot." anyway the major issues are: 1) raid autodetect uses only the minor number stored in the superblock to identify the array components, move a disk from a different machine to yours and reboot it to enjoy the show 2) raid autodetect will try to start everything it finds, it will not scale with shared storage, or other complex configurations /* end quote */ Can anyone conclude that passing the parameter md=0,/dev/* to kernel parameter is a better approach than using auto detect? I don't have a problem with having a rather long parameters in my grub.conf/lilo.conf. Thanks Christian. Subject: Re: LVM2 on RAID Date: Wed, Apr 27, 2005 at 12:20:15PM +0200 Quoting M?ns Rullg?rd (mru@inprovide.com): : cpurn@cpurn.net (Christian Purnomo) writes: : : > Hi All : > : > I use gentoo, lvm2, raid (lvm on top of raid-1). My problem is that : > the kernel doesn't automatically detect my /dev/md[2-8] as the : > partitions are set to 8e (LVM2) instead of 0xFD ... the solution I : > have at the moment is to append md=2,/dev/sdXY,/dev/sdAB and so : > forth to my grub.conf. : > : > Is it safe to change the partition types from 8e to 0xFD? will I : > break my lvm? : : It should be safe. That's how I have mine set up. : : -- : M?ns Rullg?rd : mru@inprovide.com : : _______________________________________________ : linux-lvm mailing list : linux-lvm@redhat.com : https://www.redhat.com/mailman/listinfo/linux-lvm : read the LVM HOW-TO at http://tldp.org/HOWTO/LVM-HOWTO/ _______________________________________________ linux-lvm mailing list linux-lvm@redhat.com https://www.redhat.com/mailman/listinfo/linux-lvm read the LVM HOW-TO at http://tldp.org/HOWTO/LVM-HOWTO/
