[linux-lvm] Expanding a PV on a hardware RAID
Alasdair G Kergon
agk at redhat.com
Tue Nov 16 15:58:39 UTC 2004
On Mon, Nov 15, 2004 at 12:47:28PM -0600, Jetkins at austinlogistics.com wrote:
> any way to expand a PV, and therein lies my problem. It seems that without
> a pvexpand or pvresize command, I have no way of utilizing the additional
> space.
LVM1 or LVM2?
> 1) Am I missing something, or is there currently no way to expand a PV?,
Using LVM2 tools you can pvexpand (offline) by backing up the metadata,
editing the PV size in it (pe_count), then restoring it.
new pe_count =
floor((new_disk_size_in_512_byte_sectors - pe_start) / extent_size)
> 2) Would I have been better off creating a partition table and
> pvcreate'ing on /dev/sdb1instead of pvcreate'ing the entire /dev/sdb disk
> initially, given that I could now have created a new partition on the extra
> space and pvreate'd a new PV alongside the old?
That's the supported way.
Alasdair
--
agk at redhat.com
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