[linux-lvm] Allocation maps of a mirrored LV?
lupe at lupe-christoph.de
Thu Jan 15 08:36:56 UTC 2009
On Wednesday, 2009-01-14 at 20:58:28 +0000, David Robinson wrote:
> On Tue, Jan 13, 2009 at 10:09 AM, Lupe Christoph <lupe at lupe-christoph.de> wrote:
> > I'm about to integrate support for LVM mirrors into the configuration
> > management system I'm maintaining for a client. This system has a "scan"
> > function that retrieves the current configuration and compares it
> > against a database.
> > My problem is that I'm unable to get the allocation info for the parts
> > of a mirrored volume under SLES 10 (lvm2 RPM is at 2.02.17, even
> > OpenSuSE 10.3 has only lvm2 2.02.25).
> > lvdisplay --maps only gives me:
> Try pvs/vgs/lvs instead (and use -o to get the details you want):
> # pvs --segments
> PV VG Fmt Attr PSize PFree Start SSize
> /dev/dm-0 laptop lvm2 a- 55.69G 32.00M 0 250
> /dev/dm-0 laptop lvm2 a- 55.69G 32.00M 250 1499
> /dev/dm-0 laptop lvm2 a- 55.69G 32.00M 1749 32
> /dev/dm-0 laptop lvm2 a- 55.69G 32.00M 1781 1
OK, let me show you. I created an LV with:
lvcreate --name testlv0 --size 100m --mirror 1 testvg
lvs -o +devices
LV VG Attr LSize Origin Snap% Move Log Copy% Devices
testlv0 testvg mwi-a- 100.00M testlv0_mlog 100.00 testlv0_mimage_0(0),testlv0_mimage_1(0)
Any other suggestion for a -o option? I tried stripes, segtype, seg_start,
seg_size, seg_tags, regionsize, mirror_log and lvs --segments.
I can't find an option for pvs that prints the allocation map, nor for
vgs. Any suggestions?
| There is no substitute for bad design except worse design. |
| /me |
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