[BlueOnyx:12152] Re: Increasing disk space

[Christoph Schneeberger]

Dirk and Mark,

Unfortunately I have no physical BO so I don't know the exact volume 
names, check with lvdisplay and vgdisplay respectively.

Given your new disk is /dev/sdb and the LVM volume you want to grow is 
home from the LVM volume group VolGroup00, the procedure would be about 
as follows:
(Before you start, make sure you check all my instructions below against 
the LVM Howto at http://tldp.org/HOWTO/LVM-HOWTO/index.html, I have 
typed this from the top of my head and I take no responsibility if you 
nullify your volumes by following these instructions!)

1. Create a partition sdb1 on /dev/sdb with your favourite fdisk tool, 
make it type LVM (8e).
2. Prepare the disk for LVM with pvcreate /dev/sdb1
3. Add it to the volume group you identified before with 
vgdisplay/lvdisplay with: vgextend VolGroup00 /dev/sdb1
4. Add some space to the logical volume now that it is available to the 
volume group: lvextend -L+100G /dev/VolGroup00/home (or whatever you 
identified as your volume for home with lvdisplay)
   IIRC, you can add all free space in the volume group to the volume 
with something like:
   lvextend -l+100%FREE /dev/VolGroup00/home
5. Resize filesystem (if extX, either unmounted or mounted, check the 
recommendations for online resizing for your filesystem at 
http://tldp.org/HOWTO/LVM-HOWTO/extendlv.html): resize2fs 
/dev/VolGroup00/home

After the last step a 'df -h' should show you your additional space.

Note: I have online resized a lot of busy ext3 volumes, however the 
Howto recommends against it (or only against resizing ext2 fs - this is 
unclear to me). If you can afford the down time, unmount and ev. check 
the filesystem before resizing it.

Hth,
Christoph


On 02/04/2013 08:20 AM, Dirk Estenfeld wrote:
>
> Christoph,
>
> that sounds interesting because we are also running several BO on 
> vmware and will probably run into the not enough space problem.
>
> How can I add an additional virtual disk to 
> /dev/mapper/VolGroup00-home to increase space for 
> /dev/mapper/VolGroup00-home?
>
> Regards,
>
> Dirk
>
> *Von:*blueonyx-bounces at mail.blueonyx.it 
> [mailto:blueonyx-bounces at mail.blueonyx.it] *Im Auftrag von *Christoph 
> Schneeberger
> *Gesendet:* Sonntag, 3. Februar 2013 15:38
> *An:* blueonyx at mail.blueonyx.it
> *Betreff:* [BlueOnyx:12142] Re: Increasing disk space
>
> Hi
>
> I'd recommend not increasing the existing disks size but instead 
> adding a second virtual one to the VM and then just add it to the LVM 
> volume group and then grow the volume - both are doable while the 
> system is online.
> Growing the main disk may certainly be possible too, but you need to 
> boot from an emergency CD/system and first grow the partition and then 
> the filesystem and there is some room for great havoc to happen with 
> that while the approach with a new disk is pretty fail-safe.
>
> Hth,
> Christoph
>
> On 02/03/2013 02:27 PM, Mark E. Levy wrote:
>
>     Hello,
>
>     I need to increase the size of the disk my BO system runs on. I'm
>     running BO on VMware, so I can easily  add space to the hard
>     drive  in the VM. Please tell me that getting BO to see the
>     additional free space is a s easy as rebooting...  :-)
>
>     If not, any reference points would be helpful.
>
>     TIA,
>     Mark
>
>
>
>
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