what to do with a new harddisk

[Paul Howarth]

Charles Li wrote:
> --- Paul Howarth <paul at city-fan.org> wrote:
>>If you have done a default install of FC3 then you will be using LVM. 
>>This gives you the opportunity to use the additional disk space as if it 
>>was extra space on your existing filesystems rather than creating a new 
>>partition and mounting it at a fixed mountpoint, where the only 
>>additional space you'll get is under that mountpoint.
>>
>>To do this, proceed as above up to the "p" command
>>in "fdisk". At this point, do the following:
>>
>>Use the "t" command in fdisk to change the type of the new partition to 
>>"8e" (Linux LVM). Then use the "w" command as above to write out the new 
>>partition table.
>>
>>You would then set up your new partition as an LVM physical volume:
>># pvcreate /dev/hdb1
>>
>>You can then add this new space to your existing volume group, which by 
>>default is called Volume00 (the "vgdisplay" command will show you which 
>>volume groups you have):
>># vgextend Volume00 /dev/hdb1
>>
>>You can then allocate additional space to any existing logical volumes 
>>you have. I think by default that you get LogVol00 for the root 
>>partition and LogVol01 for swap ("df" or a look in your /etc/fstab file 
>>should show you what you have). Use the "lvextend" command to do this 
>>(see "man lvextend").
>>
>>e.g. to add 50G to LogVol00:
>># lvextend --size 50G /dev/Volume00/LogVol00
>>
>>Finally, you thne increase the size of the filesystem to fill the bigger 
>>logical volume. In FC3, this can be done whilst the filesystem is mounted:
>>
>># ext2online -v /dev/Volume00/LogVol00
>
> I am getting the following error when writing:
> 
> =================================================
> Disk /dev/hdb1: 8447 MB, 8447330304 bytes
> 16 heads, 63 sectors/track, 16367 cylinders
> Units = cylinders of 1008 * 512 = 516096 bytes
> 
>      Device Boot      Start         End      Blocks  
> Id  System
> /dev/hdb1p1               1       16367     8248936+ 
> 8e  Linux LVM
> 
> Command (m for help): w
> The partition table has been altered!
> 
> Calling ioctl() to re-read partition table.
> 
> WARNING: Re-reading the partition table failed with
> error 22: Invalid argument.
> The kernel still uses the old table.
> The new table will be used at the next reboot.
> Syncing disks.
> =================================================
> After I reboot, I still see the old format.  What am I
> missing?

What's the problem? The partition type is 8e (Linux LVM), which is what 
you wanted. You should now be able to proceed to the "pvcreate" stage.

Paul.