On Mon, 5 Mar 2007, Heinz Mauelshagen wrote:
> On Sat, Mar 03, 2007 at 08:59:38PM -0500, Stuart D. Gathman wrote:
> > Which display commands display on-disk metadata, which display
> > lvmtab/lvmtab.d, and which display kernel data structures? I'd like to
> > know if the metadata is trashed on my original two PVs, or just on
> > the new one I tried to add.
>
> Because you're refering to LVM1, you see kernel metadata unless you
> provide the -D option to the *display commands.
Why did vgdisplay refuse to display anything until I restored
/etc/lvmtab.d/rootvg from the backup (prior to the attempted vgextend)?
What is the relationship between /etc/lvmconf backups and /etc/lvmtab.d?
Are they the same or different format? I notice that the size is identical,
but there where byte differences when I compared them on the backup of the
working system.
What does this mean?
[root@cmslax root]# vgdisplay -D
vgdisplay -- ERROR: not all physical volumes of volume group "rootvg" online
And sure enough,
[root@cmslax root]# pvdisplay /dev/md3
--- Physical volume ---
PV Name /dev/md3
VG Name rootvg
PV Size 16.87 GB [35374848 secs] / NOT usable 32.19 MB [LVM: 130 KB]
PV# 3
PV Status NOT available
Allocatable yes
Cur LV 1
PE Size (KByte) 32768
Total PE 538
Free PE 481
Allocated PE 57
PV UUID YfvIpi-x3Cg-xKrR-j1T2-Gutz-u1tp-sl8t01
/dev/md3 is most assuredly available and readable/writable.
> Make sure that your /etc/lvmconf backup is alright for your case
> by running "vgcfgrestore -ll -f ...".
> If so, vgcfgrestore it after initializing the PVs with pvcreate -f.
Why is the pvcreate necessary? The PVs all have metadata displayable
with pvdisplay. Pvdisplay has no -D option, so I assume it displays
on disk metadata.
--
Stuart D. Gathman <stuart@bmsi.com>
Business Management Systems Inc. Phone: 703 591-0911 Fax: 703 591-6154
"Confutatis maledictis, flammis acribus addictis" - background song for
a Microsoft sponsored "Where do you want to go from here?" commercial.
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