Major & Minor Number error when try to to VGcreate

[Muda Ikhsan]

Hi got this erro when try to create the pv... i have check several time that no major or minor number used for the Vg.


# pvcreate /dev/rdsk/c7t0d4
Physical volume "/dev/rdsk/c7t0d4" has been successfully created.
# vgcreate /dev/vgsapdbp014 /dev/dsk/c7t0d5
vgcreate: Volume group "/dev/vgsapdbp014" could not be created:
A volume group is already using this major and minor number.
Please check the minor number of the "group" device file.

# ls -ll /dev/*/group
crw-r----- 1 root sys 64 0x000000 Nov 15 2002 /dev/vg00/group
crw-rw-rw- 1 root sys 64 0x020000 Apr 17 12:06 /dev/vginfdev/group
crw-rw-rw- 1 root sys 64 0x050000 Jul 8 14:21 /dev/vgsapdbp011/group
crw-rw-rw- 1 root sys 64 0x060000 Jul 8 15:31 /dev/vgsapdbp012/group
crw-rw-rw- 1 root sys 64 0x070000 Jul 8 15:31 /dev/vgsapdbp013/group
crw-rw-rw- 1 root sys 64 0x040000 Jul 9 11:40 /dev/vgsapdbp014/group
crw-rw-rw- 1 root sys 64 0x010000 Apr 17 11:49 /dev/vgsapdev/group
crw-rw-rw- 1 root sys 64 0x030000 Apr 17 12:18 /dev/vgsapp01/group

[Michael Tully]

How did the /dev/vgsapdbp014/group file get created ?

Be aware that the disk you've used for the pvcreate and the vgcreate are different.

Post back the answer after you've tried again and I'm sure we can fix this.

[Suresh Patoria]

Hi,

You delete the group file and recreate with major and minor according to your vgvolume

then try to create the volume group using vgcreate

[T G Manikandan]

remove the group file and recreate it.

# rmsf /dev/vgsapdb014/group
# mknod /dev/vgsapdb014/group c 64 0x040000

[Muda Ikhsan]

Hi Michael,
i've create the vg with the same method as others vg vgsapdbp011,012,013... and i only have problem with this vg014.

here is my steps:
#mkdir /dev/vgsapdbp014
#ls -ll /dev/*/group checking the unused number)
#mknod /dev/vgsapdbp014 /dev/vgname/group c 64 0x040000

tehn after this i'm doing the pvcreate
..
when i did the ls -ll /dev/*/group.. the 0x040000 is not listed there.

[Muda Ikhsan]

Hi Michael,

i lefty this one :

# vgcreate /dev/vgsapdbp014 /dev/dsk/c7t0d4
vgcreate: Volume group "/dev/vgsapdbp014" could not be created:
A volume group is already using this major and minor number.
Please check the minor number of the "group" device file.

[T G Manikandan]

Just do a
#vgexport /dev/vgsapdbp014


Then try re-creating the vg.

[Muda Ikhsan]

Hi..
i've got this error when issuing the statement

# vgexport /dev/vgsapdbp014
vgexport: Volume group "/dev/vgsapdbp014" does not exist in the "/etc/lvmtab" file.
vgexport: Couldn't export volume group "/dev/vgsapdbp014".

i'm also already did

#rm lvmtab
#vgscav -a -v
#lvlnboot -R

and re-create the same thing again&again
and still getting the error

[T G Manikandan · Accepted solution]

check this link

http://forums.itrc.hp.com/cm/QuestionAnswer/1,,0x191636e69499d611abdb0090277a778c,00.html

[Massimo Bianchi]

Hi,
i had similar issues, because some kernel structure got some dirty in it, and didn't let re-use a minor untill a reboot if that had been previously used.

There were some patched regarding this... have you some recent lvm patches ?

swlist | grep -i lvm


But, you can try with a different minor, like 0x080000, one that you have never used till so far.


HTH,
Massimo

[Muda Ikhsan]

Hi..

Thanks... will try to reboot my systems. and do it all over again..
the swlist | grep -i lvm does not show me anything

[Massimo Bianchi]

Hi,
forgot a little piece :)

swlist -l product | grep -i lvm

Output similar to the following:


risap004:/root/home/root> swlist -l product | grep -i lvm
LVM B.11.00 LVM
PHCO_21630 1.0 LVM commands cumulative patch
PHKL_22267 1.0 11.00 LVM Cumulative patch


Mine is not recent, but it works...

Massimo