From mboxrd@z Thu Jan 1 00:00:00 1970 Message-ID: <3BF11BB7.60901@inetnow.net> From: Keith Hopkins MIME-Version: 1.0 Subject: Re: [linux-lvm] Help on LVM/SW-RAID build problems References: <20011113043112.78140.qmail@web10401.mail.yahoo.com> Content-Transfer-Encoding: 7bit Sender: linux-lvm-admin@sistina.com Errors-To: linux-lvm-admin@sistina.com Reply-To: linux-lvm@sistina.com List-Help: List-Post: List-Subscribe: , List-Unsubscribe: , List-Archive: Date: Tue Nov 13 07:09:02 2001 List-Id: Content-Type: text/plain; charset="us-ascii"; format="flowed" To: linux-lvm@sistina.com BOIK MOON wrote: > Hi, > > > >Is it OK to use the partition type "0x8e" for > >>LVM/SW-RAID? How about "0xfd"? > >> > >you can not create LVM/SW-RAID > >you can make LVM over SW-RAID or SW-RAID over LVM > > Why am I getting an error on the partition when I use 0x8e as type? Because you can not RAID and LVM on the same device at the same time. You CAN use your physical partitions (/dev/hd*# or sd*#) to create a RAID device and THEN use create LVM on top of the RAID device (/dev/md#). > > Yes, I did not have any error when I used 0xfd as partition type. > > To make SW-RAID over LVM, Should I create the partition using 0x8e(LVM) > type? If you mean the same partition you used when creating the RAID, then NO. > as for the "cannot determine md version: No such file or directory" You don't have "md" (RAID) support in the kernel. Configure your kernel for md devices (or, if it is not a boot device, make them as modules) after you do your mkraid, then pvcreate the /dev/md# and you can use it for lvm (no need to set any partition type on md0). Lost in Tokyo, Keith > Thanks for your kind answer > > Bo > > svetljo wrote: > > Hi > you shouldn't change the softRAID partition id to lvm > you had to create the lvm over the RAID > > >1) fdisk error > > > >Disk /dev/hdb: 255 heads, 63 sectors, 2434 cylinders > >Units = cylinders of 16065 * 512 bytes > > > > Device Boot Start End Blocks Id > >System > >/dev/hdb1 1 64 514048+ 8e > >Linux LVM > >/dev/hdb2 65 702 5124735 8e > >Linux LVM > >/dev/hdb3 703 1340 5124735 8e > >Linux LVM > > > > > you have destroyed the RAID > > > > >Command (m for help): w > >The partition table has been altered! > > > > > >2) No such file error > > > > > you have no the raid devices hdb[1-3] > > > > >root@bo:~ > raidstop --all > >cannot determine md version: No such file or directory > > > >kingate@bo:~ > /sbin/mkraid > >cannot determine md version: No such file or directory > > > >kingate@bo:~ > /sbin/mkraid --really-force /dev/md1 > >cannot determine md version: No such file or directory > > > >3) Partiton type > > > > Is it OK to use the partition type "0x8e" for > >LVM/SW-RAID? How about "0xfd"? > > > you can not create LVM/SW-RAID > you can make LVM over SW-RAID or SW-RAID over LVM > > > > >Thanks in advance, > > > >Bo > > > >-----------------raidtab------------ > >raiddev /dev/md0 > > raid-level 0 > > nr-raid-disks 2 > > nr-spare-disks 0 > > chunk-size 4 > > persistent-superblock 1 > > device /dev/hdb1 > > raid-disk 0 > > device /dev/hdc1 > > raid-disk 1 > > > >raiddev /dev/md1 > > raid-level 1 > > nr-raid-disks 2 > > nr-spare-disks 0 > > chunk-size 4 > > persistent-superblock 1 > > device /dev/hdb2 > > raid-disk 0 > > device /dev/hdc2 > > raid-disk 1 > > > >raiddev /dev/md2 > > raid-level 1 > > nr-raid-disks 2 > > ; nr-spare-disks 0 > > chunk-size 4 > > persistent-superblock 1 > > device /dev/hdb3 > > raid-disk 0 > > device /dev/hdc3 > > raid-disk 1 > > > that is OK > but /dev/hda[1-3] and /dev/hdb[1-3] should be SW-RAID ( partition id) > > and then > pvcreate /dev/md0 /dev/md1 /dev/md2 > vgcreate > ......... > > good luck >