topic Re: vgcreate in Operating System - HP-UX

vgcreate

jamshed — Mon, 19 Jun 2006 21:46:59 GMT

# vgcreate vgu10 /dev/dsk/c14t1d4
vgcreate: Cannot open the control file "/dev/vgu10/group":
Device busy
#
How can I fix this problem?

Re: vgcreate

Albert_31 — Mon, 19 Jun 2006 21:54:11 GMT

Hello Jamshed,

Check the following

# ll /dev/vgu10

See if you find a file called "group", else you need to do the following

# ll /dev/*/group (to find out the minor numbers used)
example
0x020000 --> here the minor number is 02
0x010000 --> here the minor number is 01

# mkdir /dev/vgu10
# mknod /dev/vgu10/group c 64 0xYY0000
Replace YY with the minor number you want to assign to the volume.
# vgcreate /dev/vgu10 /dev/dsk/c14t1d4
should work.

regards

albert

Re: vgcreate

Warren_9 — Mon, 19 Jun 2006 22:09:16 GMT

hi,

# kmtune -l -q maxvgs

the default max number of VG is 10, need to change the paramter and rebuild the kernel if you already have 10 VGs.

GOOD LUCK!!

Re: vgcreate

jamshed — Mon, 19 Jun 2006 22:11:00 GMT

Thank you Albert!

Re: vgcreate

A. Clay Stephenson — Mon, 19 Jun 2006 22:13:11 GMT

Almost certainly the /dev/vgu10/group device node that you (presumably) created does not have a unique (to this host) minor device number. Do an "ls -l /dev/vg*/group" and note the minor device numbers currently in use. You then create a device node that does not conflict with any existing device nodes.

By convention (though certainly not required) vg10 would use major 64 monir 0x0a0000
e.g.

mkdir /dev/vg10
mknod /dev/vg10/greoup c 64 0x0a0000

Now you should be ready to vgcreate (assuming that 0x0a0000 is truly unique).

Re: vgcreate

jjh_1 — Thu, 29 Jun 2006 02:41:47 GMT

Hi,
I think you already used group minor number 10. Check othr group's group minor number.

Re: vgcreate

Mridul Shrivastava — Thu, 29 Jun 2006 03:14:31 GMT

By default minor no. for vg can be between 00-09, ie max 10 vgs can be created. If there are already 10 vgs created and this is the next one then you have to change the maxvgs and then recreate vg.
Else check for the existing minor no.'s using ll /dev/vg*/group

then use minor no. which is currently not in use....

HTH