[linux-lvm] LVM bug

[mark seddon]

I have 2 VG's called vg00 and vg01, vg00 is the boot disk. The problem is 
that vgdisplay displays incorrect info, ie .the wrong VG and other commands 
such as lvcreate get confused as to which VG is which. 

Here is the partition table vg00 is hda9 and vg01 is hda7.

Disk /dev/hda: 240 heads, 63 sectors, 1559 cylinders
Units = cylinders of 15120 * 512 bytes

   Device Boot    Start       End    Blocks   Id  System
/dev/hda1             1         2     15088+  a0  IBM Thinkpad hibernation
/dev/hda2   *         3       279   2094120    7  HPFS/NTFS
/dev/hda3           280      1559   9676800    f  Win95 Ext'd (LBA)
/dev/hda5           280       418   1050808+   6  FAT16
/dev/hda6           419       557   1050808+   6  FAT16
/dev/hda7           558       696   1050808+  8e  Linux LVM
/dev/hda8           697       731    264568+  82  Linux swap
/dev/hda9           732      1559   6259648+  8e  Linux LVM

here is a vgdisplay output. Note it always display hda9

[root at cromlech 1.0.1-rc4]# vgdisplay vg01
--- Volume group ---
VG Name               vg00
VG Access             read/write
VG Status             available/resizable
VG #                  1
MAX LV                255
Cur LV                6
Open LV               5
MAX LV Size           255.99 GB
Max PV                255
Cur PV                1
Act PV                1
VG Size               5.96 GB
PE Size               4.00 MB
Total PE              1527
Alloc PE / Size       737 / 2.88 GB
Free  PE / Size       790 / 3.09 GB
VG UUID               nbprU3-BaUv-VAwF-tG5r-rW3s-uRvy-3j7S3G


[root at cromlech 1.0.1-rc4]# vgdisplay vg00
--- Volume group ---
VG Name               vg00
VG Access             read/write
VG Status             available/resizable
VG #                  0
MAX LV                255
Cur LV                6
Open LV               0
MAX LV Size           255.99 GB
Max PV                255
Cur PV                1
Act PV                1
VG Size               5.96 GB
PE Size               4.00 MB
Total PE              1527
Alloc PE / Size       737 / 2.88 GB
Free  PE / Size       790 / 3.09 GB
VG UUID               nbprU3-BaUv-VAwF-tG5r-rW3s-uRvy-3j7S3G

here is a session output which gives some more info on the problems 
encountered. Note the lvscan output at the end showing 11 lv's 5 of which are
duplicates.The lvmtab file seems to know which disk is which but the lv 
cmmand set appears to get confused.

000[root at cromlech lvmtab.d]# strings vg00
vg00
nbprU3BaUvVAwFtG5rrW3suRvy3j7S3G
/dev/hda9
vg00
localhost.localdomain1011713900
V19lI6ULumseLKmET2KJ2cZoqoYmN6Z4
/dev/vg00/lvol1
vg00
/dev/vg00/lvol2
vg00
/dev/vg00/lvol3
vg00
@xa&
/dev/vg00/lvol4
vg00
@xaF
/dev/vg00/lvol5
vg00
@x¡L
[root at cromlech lvmtab.d]# strings vg01
vg01
BSZ3UwVD67zlzW5uYp9tE5ptAR0QyH3X
/dev/hda7
vg01
localhost.localdomain1011747475
Afs43qT5mmjCFr2yr7YH8Um0WRKEPlJx
[root at cromlech lvmtab.d]# ls
vg00  vg01
[root at cromlech lvmtab.d]# lvscan
lvscan -- volume group "vg00" is NOT active; try -D
lvscan -- ACTIVE            "/dev/vg00/lvol1" [200.00 MB]
lvscan -- ACTIVE            "/dev/vg00/lvol2" [1.00 GB]
lvscan -- ACTIVE            "/dev/vg00/lvol3" [1.00 GB]
lvscan -- ACTIVE            "/dev/vg00/lvol4" [200.00 MB]
lvscan -- ACTIVE            "/dev/vg00/lvol5" [300.00 MB]
lvscan -- 5 logical volumes with 2.68 GB total in 1 volume group
lvscan -- 5 active logical volumes

[root at cromlech lvmtab.d]#
[root at cromlech lvmtab.d]# lvcreate -l50 vg00
lvcreate -- can't create logical volume: "vg00" isn't active

[root at cromlech lvmtab.d]# vgchange -ay vg00
vgchange -- volume group "vg00" successfully activated

[root at cromlech lvmtab.d]# lvcreate -l50 vg00
lvcreate -- doing automatic backup of "vg00"
lvcreate -- logical volume "/dev/vg00/lvol6" successfully created

[root at cromlech lvmtab.d]# lvscan
lvscan -- ACTIVE            "/dev/vg00/lvol1" [200.00 MB]
lvscan -- ACTIVE            "/dev/vg00/lvol2" [1.00 GB]
lvscan -- ACTIVE            "/dev/vg00/lvol3" [1.00 GB]
lvscan -- ACTIVE            "/dev/vg00/lvol4" [200.00 MB]
lvscan -- ACTIVE            "/dev/vg00/lvol5" [300.00 MB]
lvscan -- ACTIVE            "/dev/vg00/lvol6" [200.00 MB]
lvscan -- ACTIVE            "/dev/vg00/lvol1" [200.00 MB]
lvscan -- ACTIVE            "/dev/vg00/lvol2" [1.00 GB]
lvscan -- ACTIVE            "/dev/vg00/lvol3" [1.00 GB]
lvscan -- ACTIVE            "/dev/vg00/lvol4" [200.00 MB]
lvscan -- ACTIVE            "/dev/vg00/lvol5" [300.00 MB]
lvscan -- 11 logical volumes with 5.56 GB total in 2 volume groups
lvscan -- 11 active logical volumes


I'm running kernel 2.4.16 with LVM 1.0.1-rc4.

rgds

mark