[linux-lvm] Reducing PV/ Reclaiming free PEs from a PV to be usedfor another partition/purpose outside of LVM
Ajeet Nankani
fromkth+lvm at fastmail.fm
Sun Feb 6 21:01:30 UTC 2005
On Sun, 6 Feb 2005 20:24:40 +0000, "Alasdair G Kergon" <agk at redhat.com>
said:
> On Sun, Feb 06, 2005 at 12:15:48PM -0800, Ajeet Nankani wrote:
> > vgcfgbackup which would give me meta file data as below
>
> > extent_size = 65536 # 32 Megabytes
>
> > device = "/dev/hda6" # Hint only
>
> > pe_start = 384
> > pe_count = 266 # 8.3125 Gigabytes
>
> > extent_count = 192 # 6 Gigabytes
> > "pv0", 0
>
> 0-191
>
> > extent_count = 32 # 1024 Megabytes
> > "pv0", 192
>
> 192-223
>
> > Now here if i edit it and in physical volume section where it says that
> > pe_count = 266, i change it to pe_count = 224 which is the last PE used
> > by the Logical Volume.
>
> Yes.
>
> > after saving it if i run vgcfgrestore with this file, will my PV be
> > reduced??
>
> That's what pvresize would do.
but pvresize says command not implemented yet.
also what this "pe_start = 384" in meta data means.
Thanks
-ajeet.
>
> > after that i can reduce hda6 with parted or similar utility.
>
> and the new size is 384 sectors plus 224 extents of 65536 sectors each.
>
> Alasdair
> --
> agk at redhat.com
>
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