topic Re: vgimport in Operating System - HP-UX

vgimport

Alexander Yereshenko — Sat, 24 Nov 2007 22:42:06 GMT

How can i fix this problem?
# Beginning the import process on Volume Group "/dev/vgu22".
vgimport: Cannot open the control file "/dev/vgu22/group":
No such device

Re: vgimport

Shrikant Lavhate — Sat, 24 Nov 2007 22:58:46 GMT

I guess you need to have device name into command not volume group name.

you need to input the device name like this

vgimport -v -m mapfile /dev/dsk/cXtXdX

Re: vgimport

Shrikant Lavhate — Sat, 24 Nov 2007 23:02:58 GMT

Where map file consist of which Logical Volume
names and numbers are to be read. See manpage for details.

Re: vgimport

Alexander Yereshenko — Sat, 24 Nov 2007 23:13:56 GMT

i have not imported volume groups

Re: vgimport

Shrikant Lavhate — Sat, 24 Nov 2007 23:16:41 GMT

> i have not imported volume groups

What you mean by this? You havnt runned any command? then from where you got above error.... From log files??

Re: vgimport

A. Clay Stephenson — Sat, 24 Nov 2007 23:18:47 GMT

Before executing vgimport, you must first create a directory (/dev/vgu22 in this case) and a device node, /dev/vgu22/group.

First, do an "ls -l /dev/vg*/group" and note all the minor device numbers in use. Choose a unused one, e.g. 0x090000 and make the device node.

mknod /dev/vgu22/group c 64 0x090000

You can them execute vgimport. The map file is optional if the LVOL names are standard and you know the disk device nodes.

Re: vgimport

rajdev — Sat, 24 Nov 2007 23:39:02 GMT

Hi,

Agree to what Clay has said, the man page of vgimport is clear about it .....

From #man vgimport --->
The command works much like vgcreate by requiring that the volume group device directory and the group special file be created before the command is executed.

Regards,
RD

Re: vgimport

Alexander Yereshenko — Sat, 24 Nov 2007 23:40:37 GMT

# mknod /dev/vgu12/group c 64 0x110000
# vgimport -v /dev/vgu12 /dev/dsk/c14t1d3
Beginning the import process on Volume Group "/dev/vgu12".
vgimport: Cannot open the control file "/dev/vgu12/group":
No such device

--it still same situation

Re: vgimport

Hasan Atasoy — Sun, 25 Nov 2007 02:04:09 GMT

hi alexander;

hp-ux has a kenel parameter, maxvgs, you cannot give group number greater than this value. look at maxvg parameter by "kctune maxvg" and give a value less than this value.

Hasan.

Re: vgimport

rajdev — Mon, 26 Nov 2007 11:10:37 GMT

Hi Alexander,

1. check maxvgs as told by hasan and increase it if its the default (10 ).

2. how many Volume groups do you already have

cd /dev
ls -lR|grep group|sort -n -k6

then add 1 to the minor number of the last entry and create the group file with that number ..

a) see that you don't have a vgu22 volume group already existing ...!
b) mkdir -p /dev/vgu22
c) mknod /dev/vgu22/group c 64 0x??0000

replace ?? with the number you calculated in step 2 above

d) now try the import -- use the verbose option
e) if you still have problem .. use tusc command when running vgimport

Regards,
RD

Re: vgimport

Nguyen Anh Tien — Mon, 26 Nov 2007 11:32:30 GMT

I think you set vgs (in kernel parameter) to 10 and then you create group file with minor number is 0x110000 so system does not recognize
Pls increate vgs to 15 or 20 or change minor number below 9
#mknod /dev/vg02/group c 64 0x080000
HTH
tienna

Re: vgimport

A. Clay Stephenson — Mon, 26 Nov 2007 11:54:04 GMT

... and note that rather than using 0x110000 you probably want to use 0x0b0000 but you need to choose an unused minor device number that is less than maxvgs (and note that maxvgs is usually specified as a decimal number).