From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mx1.redhat.com (mx1.redhat.com [172.16.48.31]) by int-mx1.corp.redhat.com (8.12.11.20060308/8.12.11) with ESMTP id k4DFhAjU028592 for ; Sat, 13 May 2006 11:43:10 -0400 Received: from orca.ele.uri.edu (orca.ele.uri.edu [131.128.51.63]) by mx1.redhat.com (8.12.11.20060308/8.12.11) with ESMTP id k4DFh9N3016494 for ; Sat, 13 May 2006 11:43:09 -0400 Subject: Re: [linux-lvm] problem when creating a volumegroup on an external drive From: Ming Zhang In-Reply-To: <4465967E.6090206@neuroweave.nl> References: <44647168.3030205@neuroweave.nl> <44647CA0.3010509@redhat.com> <4464A0BE.7070509@neuroweave.nl> <4464A274.3090808@gmx.net> <44650B76.6070604@neuroweave.nl> <1147484968.7783.12.camel@localhost.localdomain> <4465967E.6090206@neuroweave.nl> Date: Sat, 13 May 2006 11:42:49 -0400 Message-Id: <1147534970.9185.30.camel@localhost.localdomain> Mime-Version: 1.0 Content-Transfer-Encoding: 7bit Reply-To: mingz@ele.uri.edu, LVM general discussion and development List-Id: LVM general discussion and development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , List-Id: Content-Type: text/plain; charset="us-ascii" To: Joep Blom Cc: LVM general discussion and development i did not follow the whole thread and thus i have no idea. if there is no important data on it and it now does not belong to any vg. u can use dd to wipe the first 512B and then do pvcreate as u want. ming On Sat, 2006-05-13 at 10:19 +0200, Joep Blom wrote: > Ming Zhang wrote: > > >On Sat, 2006-05-13 at 00:25 +0200, Joep Blom wrote: > > > > > >>Klaus Strebel wrote: > >> > >> > >> > >>>Hi Joep, > >>> > >>>well, what Patrick meant is, that your system (forget that USB drive in > >>>this moment) already has a VG called VolGroup00 on your internal disk. > >>>The modern FC distros use it as default (i think, i'm using SuSE ;-) ). > >>>Before messing up more using fdisk, just provide us with the output of a > >>>vgdisplay -a ;-) get an impression of the 'disaster' :-). > >>> > >>>Btw. the volume group your wanted to create has the name VG0, not > >>>VolGroup00 ;-) .. > >>> > >>>Ciao > >>>Klaus > >>> > >>> > >>> > >>> > >>> > >>Klaus & Pattrick, > >>I'm sorry I asked the wrong question (stupid me!). I interpreted the > >>output of vgcreate wrongly. Yes, Klaus, the VolGroup00 was automatically > >>created by FC when I did an upgrade. > >>The correct question is that VG01 (the name I gave it) occupies 232.88 > >>Gb although I had asked for 250 Gb. Where are the 17.2 GB and can I add > >> > >> > > > > > >when u buy the disk, vendor count it as 250GB or 250 * 1000 * 1000 * > >1000 bytes. > > > >when LVM count it, it is 250 * 1000 * 1000 * 1000 / 1024 / 1024/ 1024 = > >232.83GB. > > > >check online, many discussion about this 1024 and 1000 issue. > > > > > > > > > >>them to VG01. > >>When I look with fdisk it says that no information is available for > >>/dev/sda1 and "invalid flag 0x0000 of partition table 4 will be > >>corrected by w(rite)". > >>I assume that all problems have arisen due to the fact that I did a > >>pvcreate on a disk which has a W95 FAT32 partition ( of 250 Gb). > >>I assume the best way is to delete the partition completely and create a > >>new partition (with parted or fdisk?) or are there better methods? Do I > >>have to remove VG01 first? > >>Please, be lenient to me for these basic questions. > >>Joep > >> > >> > >>_______________________________________________ > >>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/ > > > > > > > Ah, Ming, > Thanks! That solves it!. > So I don't have to remove the already created pv. Only fdisk complains > because when I do an "fdisk /dev/sda" it sees it still as a FAT32 > partition but when I do an "fdisk /dev/sda1" it correctly sees it as a > partition which is virtually free but with the invalid flag in partition > table 4. As I use it as a backup disk I don't have to boot from it but > is a logical volume bootable? > One last question: Why can't I use "pvcreate /dev/sda" but have to use > "pvcreate /dev/sda1" (as the LV HOW-TO stated the former). > Hope you can help me out with this as well. > Joep >