On Mon, 2007-01-15 at 19:09 +0100, Remi Collet wrote: > Andrew Wood a écrit : > > Dear all, > > > > I'm using FC6. I have a 8 gbyte disk on my pc, and I've justed added > > another. Easy enough, ensuring the jumpers for master slave are set, etc. > > > > I am a bit confused about the LVM. I used this, via the graphical front > > end to add the new physical volume. > > You have extend the "Volume Group" > > > > > I must have missed something, or do I have unfounded expectations of how > > LVM works (i.e. seemlessly)? > > I think you need to extent the "Logical Volume". > Think it's not possible with graphical tools (require to umount the > filesystem) with current version... > > You should > 1/ extent the Logical Volume (lvextent) > 2/ extent the filesystem (resize2fs) > > Remi > LVM is a very cool and powerful piece of kit ... allowing the addition (and removal) of storage with relative ease (Easy for me to say I've been messing around with this stuff for over 10 years). Anyway what you need to do is initialise the the new hard drive before you can extend the volume group onto it (Im working on the assumption here that you've not partioned the disk and what to use the whole drive in the volume group) # pvcreate /dev/hdX (where hdX is the new drive) e.g pvcreate /dev/hdb (Have a look at the man page for pvcreate as well) Once the above command has completed you can bring that disk into your existing volume group # vgextend <Volume Group Name> /dev/hdX e.g. vgextend VolGroup00 /dev/hdb (Have a look at the man page for vgextend as well) Where <Volume Group Name> is your existing volume group and /dev/hdX is the same as you used in the pvcreate command Once the above has completed successfully you can then extend the logical volume that holds the file system you're filling up # lvextend -L +NN[mg] /dev/VGName/LVName PhysicalVolume e.g. lvextend -L +10g /dev/VolGroup00/LogVol00 /dev/hdb (Have a look at the man page for vgextend as well) Where +NN is the amount of space you want to ADD and [mg] is either megabytes or gigabytes (it will do kilobytes and terabytes as well if need be) and VGName is the volume group you used in the vgextend step and LVName is the logical volume name and PhysicalVolume is the hard drive you used in the pvcreate step. Once the above is complete you can then resize your filesystem be using the correct utility for the type of filesystem you're using. All of the above (and potentially the file system resize) can be done while your machine is up and running as well. I'd read up about LVM and just double check the syntax (I am doing this from memory and it is late here) HTH AJ
