Hi
I've got a Redhat server, running under VmWare. It has 4 disks allocated to it, on each disk is a seperate volume group (format lvm2)
I've been asked to increase the storage for one of these disks. PV=/dev/sdc

So I've increased the size of the disk within vcentre and rescanned so that
fdisk -l /dev/sdc now shows the new size


Disk /dev/sdc: 483.2 GB, 483183820800 bytes
255 heads, 63 sectors/track, 58743 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disk identifier: 0x00000000

Its the next steps I'm not sure about.

How do I get this new larger size available to the volume group so that I can extend the filesystem ?

Very new to redhat so its a big learning curve.
Thanks

Run pvresize to extend the physical volume. By default it will try to extend the volume to cover all available space on the device, which in this case is what you want.

The extra space will then be available in the Volume Group of which the PV is a member, and can be allocated to Logical Volumes as needed. Once you've done that, you can proceed to extend the file system(s) in question.

1 members found this post helpful.

Brilliant, all done.. I had read about pvresize but wasn't sure if I had to do anything in fdisk first.. Thanks for the quick reply.

If your Physical Volume had been a partition on /dev/sdc rather than the whole device, a quick trip into fdisk would indeed have been necessary.