vgcreate: Cannot open the control file

[Muthukumar_5]

You've create lots of device files with mknod? remove the unneeded devices by using rm -rf /dev/vg. Create again with mknod command.

You can use 0x010000 for minor number as,

# mknod /dev/vg72/group c 64 0x010000

hth.

[Vipin Singhal]

thanks
i created the VG by your help

i need 75 GB for my file system.

these are the details:
# vgdisplay -v /dev/vg72
--- Volume groups ---
VG Name /dev/vg72
VG Write Access read/write
VG Status available
Max LV 255
Cur LV 0
Open LV 0
Max PV 16
Cur PV 1
Act PV 1
Max PE per PV 9215
VGDA 2
PE Size (Mbytes) 4
Total PE 9214
Alloc PE 0
Free PE 9214
Total PVG 0
Total Spare PVs 0
Total Spare PVs in use 0


--- Physical volumes ---
PV Name /dev/dsk/c26t6d0
PV Name /dev/dsk/c29t6d0 Alternate Link
PV Status available
Total PE 9214
Free PE 9214
Autoswitch On

# diskinfo /dev/rdsk/c26t6d0
SCSI describe of /dev/rdsk/c26t6d0:
vendor: DGC
product id: CX700WDR10
type: direct access
size: 37748736 Kbytes
bytes per sector: 512
# diskinfo /dev/rdsk/c29t6d0
SCSI describe of /dev/rdsk/c29t6d0:
vendor: DGC
product id: CX700WDR10
type: direct access
size: 37748736 Kbytes
bytes per sector: 512

I think , i got 36.8Gb space using these two devices.
should i add more devices in this VG

[saju_2]

Hi

Yes u have 36 GB in this VG. If u want more space in this vg, add more disks intothis VG.

Allocate a disk to this server
ioscan -fnC disk
insf
pvcreate /dev/rdsk/cxtxdx
vgextend /dev/vg72 /dev/dsk/cxtxdx


Then create the LV's in the VG, with the required size

lvcreate (additional options) -L (size in MB) -n (name) /dev/vg72

newfs -F vxfs -o largefiles /dev/vg72/r

mount /dev/vg72/lvolx

This will give a a filesystem mounted at
Regards
CS

[Vipin Singhal]

hi,
I am adding one more device- c23t6d0 in vg72.

#pvcreate -f /dev/rdsk/c23t6d0
#vgextend /dev/vg72 /dev/dsk/c23t6d0
Current path "/dev/dsk/c29t6d0" is an alternate link, skip.
vgextend: Couldn't install the physical volume "/dev/dsk/c23t6d0".
The physical volume has no driver configured.

what should i do?
should i give this command-
#vgextend /dev/vg72 /dev/dsk/c29t6d0 /dev/dsk/c23t6d0

[Vipin Singhal]

Please suggest me

[Muthukumar_5]

Yes.

Try like,

#vgextend /dev/vg72 /dev/dsk/c29t6d0 /dev/dsk/c23t6d0

Refer vgextend man page for examples.

hth.

[melvyn burnard]

I would suggest now might be a good time to read the man pages and maybe also the manuals?

man vgcreate
man vgextend

[Muthukumar_5]

Refer manuals:

http://docs.hp.com/en/B2355-90672/ch03.html
http://www.experts-exchange.com/Operating_Systems/Unix/Unix_Setup/Q_21242092.html

hth.

[Vipin Singhal]

I typed wrong minor no., it should be in hexadecimal