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Re: [linux-lvm] Help on LVM/SW-RAID build problems



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





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