Yeah. You CAN'T use mounted filesystems for LVM. You'll corrupt both.
--On August 25, 2005 11:09:13 PM -0400 Faheem Mitha <faheem@email.unc.edu>
wrote:
Dear People,
I must be missing something obvious, but I'm having problems with basic
commands on Debian Sarge, using lvm2.
I installed lvm2 and dmsetup. I'm using the stock Debian kernel
2.6.8-2-386.
I can do basic manipulations using /dev/hda1, but not with /dev/hda2.
This is on a very ordinary Dell Optiplex, normal x86 architecture.
*******************************************************************
root@io:/home/faheem# df
Filesystem 1K-blocks Used Available Use% Mounted on
/dev/hda2 37483592 300352 35279136 1% /
tmpfs 258052 0 258052 0% /dev/shm
/dev/hda1 918322 14622 854704 2% /boot
Physical volume "/dev/hda2" successfully created
root@io:/dev/mapper# pvcreate /dev/hda1
root@io:/dev/mapper# pvdisplay /dev/hda1
--- Physical volume ---
PV Name /dev/hda1
VG Name testvg
PV Size 956.00 MB / not usable 0
Allocatable yes
PE Size (KByte) 4096
Total PE 239
Free PE 239
Allocated PE 0
PV UUID sGOTrW-ttC4-m4uq-Cwck-V5s3-knz7-NpydvJ
root@io:/dev/mapper# vgcreate testvg /dev/hda1
Volume group "testvg" successfully created
root@io:/dev/mapper# vgdisplay testvg
--- Volume group ---
VG Name testvg
System ID
Format lvm2
Metadata Areas 1
Metadata Sequence No 1
VG Access read/write
VG Status resizable
MAX LV 0
Cur LV 0
Open LV 0
Max PV 0
Cur PV 1
Act PV 1
VG Size 956.00 MB
PE Size 4.00 MB
Total PE 239
Alloc PE / Size 0 / 0
Free PE / Size 239 / 956.00 MB
VG UUID IHrOgz-RWDW-EIAY-m9vD-idgT-1I99-cyoS8n
root@io:/dev/mapper# pvcreate /dev/hda2
Physical volume "/dev/hda2" successfully created
All good so far. However.
root@io:/dev/mapper# pvdisplay /dev/hda2
No physical volume label read from /dev/hda2
Failed to read physical volume "/dev/hda2"
root@io:/home/faheem# vgextend testvg /dev/hda2
No physical volume label read from /dev/hda2
/dev/hda2 not identified as an existing physical volume
Unable to add physical volume '/dev/hda2' to volume group 'testvg'.
Any idea what is going on here? This is a new installation, and only has
the bare bones on it.
Please cc me on any reply. Thanks in advance.
Faheem.
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--
"Genius might be described as a supreme capacity for getting its possessors
into trouble of all kinds."
-- Samuel Butler
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