[linux-lvm] LVM + SAN Behavior

David Johnston david at littlebald.com
Mon Feb 7 14:11:34 UTC 2005


On Wed, 2005-02-02 at 20:56, Kreig DuBose wrote:
> Hello-
> 
> I too am sharing the same issue regarding SAN file systems and Linux
> LVM.  I have a device presented via FC on RHEL 3 update 3.  
> 
> I started with a simple raid 5 configuration with 3 disks
> 
> When I created the file systems I did so as such:
> 
> pvcreate /dev/sdc
> vgcreate <volgrp_name> /dev/sdc
> lvcreate -L +45G -n <lv_name> <volgrp_name>
> mkfs -j  /dev/<volgrp_name>/<lv_name>
> 
> So far so good.  Partitions mount up and work fine.  My problem is now
> that I've added in another disk  I cannot grow the vg:
> 
> # vgextend <volgrp_name> /dev/sdc
> ______________________________________________________________________
Perhaps it's just a typo in your email, but this is the same pv you used
when you first created the vg.  I think you meant:
# vgextend <volgrp_name> /dev/sdd

That would add sdd to your vg, which already has sda, sdb, and sdc.
-- 
David Johnston <david at littlebald.com>
Little Bald Consulting, LLC




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