problem with LVM HPUX 11.23 IA 64

[Chris Fadrowski]

trying to create disks in LVM and my normal procedure is not working. These disks are on a HITACHI disk array (AMS500). Hitachi software that is running "dynamic link manager" puts the "h" in the ch5t0d0 path. Nothing to worry about there. Here is what i get

Class I H/W Path Driver S/W State H/W Type Description
============================================================================
disk 0 0/0/3/0.0.0.0 sdisk CLAIMED DEVICE _NEC DVD+-RW ND-6650A
/dev/dsk/c0t0d0 /dev/rdsk/c0t0d0
disk 1 0/1/1/0/4/0.0.0 sdisk CLAIMED DEVICE HP LOGICAL VOLUME
/dev/dsk/c2t0d0 /dev/dsk/c2t0d0s2 /dev/rdsk/c2t0d0 /dev/rdsk/c2t0d0s2
/dev/dsk/c2t0d0s1 /dev/dsk/c2t0d0s3 /dev/rdsk/c2t0d0s1 /dev/rdsk/c2t0d0s3
disk 3 0/4/2/0.97.8.19.0.0.0 zdlmfdrv CLAIMED DEVICE HITACHI DF600F
/dev/dlm/c5t0d0 /dev/dsk/ch5t0d0 /dev/rdsk/ch5t0d0
disk 5 0/4/2/0.97.8.19.0.0.1 zdlmfdrv CLAIMED DEVICE HITACHI DF600F
/dev/dlm/c5t0d1 /dev/dsk/ch5t0d1 /dev/rdsk/ch5t0d1
disk 7 0/4/2/0.97.8.19.0.0.2 zdlmfdrv CLAIMED DEVICE HITACHI DF600F
/dev/dlm/c5t0d2 /dev/dsk/ch5t0d2 /dev/rdsk/ch5t0d2
disk 8 0/4/2/0.97.8.19.0.0.3 zdlmfdrv CLAIMED DEVICE HITACHI DF600F
/dev/dlm/c5t0d3 /dev/dsk/ch5t0d3 /dev/rdsk/ch5t0d3
disk 9 0/4/2/0.97.8.19.0.0.4 zdlmfdrv CLAIMED DEVICE HITACHI DF600F
/dev/dlm/c5t0d4 /dev/dsk/ch5t0d4 /dev/rdsk/ch5t0d4
disk 10 0/4/2/0.97.8.19.0.0.5 zdlmfdrv CLAIMED DEVICE HITACHI DF600F
/dev/dlm/c5t0d5 /dev/dsk/ch5t0d5 /dev/rdsk/ch5t0d5
disk 2 0/5/1/0.97.9.19.0.0.0 zdlmfdrv CLAIMED DEVICE HITACHI DF600F
/dev/dlm/c7t0d0
disk 4 0/5/1/0.97.9.19.0.0.1 zdlmfdrv CLAIMED DEVICE HITACHI DF600F
/dev/dlm/c7t0d1
disk 6 0/5/1/0.97.9.19.0.0.2 zdlmfdrv CLAIMED DEVICE HITACHI DF600F
/dev/dlm/c7t0d2
disk 11 0/5/1/0.97.9.19.0.0.3 zdlmfdrv CLAIMED DEVICE HITACHI DF600F
/dev/dlm/c7t0d3
disk 12 0/5/1/0.97.9.19.0.0.4 zdlmfdrv CLAIMED DEVICE HITACHI DF600F
/dev/dlm/c7t0d4
disk 13 0/5/1/0.97.9.19.0.0.5 zdlmfdrv CLAIMED DEVICE HITACHI DF600F
/dev/dlm/c7t0d5
root@host:/>vgcreate vgu10 /dev/dsk/ch5t0d0
vgcreate: Cannot open the control file "/dev/vgu10/group":
No such device
root@host:/>rm -R /dev/vgu10
root@host:/>mkdir /dev/vgu10
root@host:/>mknod /dev/vgu10/group c 64 0xA0000
root@host:/>vgcreate vgu10 /dev/dsk/ch5t0d0
vgcreate: Cannot open the control file "/dev/vgu10/group":
No such device

why "cannot open the control file /dev/vgu10/group

clearly it exists. I did my pvcreate -f /dev/rdsk/ch5t0d0 and it reported no issues.

[Patrick Wallek · Accepted solution]

Your mknod syntax is slightly incorrect.

It should be:

mknod /dev/vgu10/group c 64 0x0a0000

There must be 6 hex characters after the '0x' in the minor number.

Also make sure that your MAXVGS is set high enough to use a '0a' as the minor number. hex a = decimal 10. So MAXVGS must be at least 10.

[Denver Osborn]

What do you have maxvgs set to? The default of 10 would allow 0x00 to 0x09 (10 volume groups)... you wouldn't be able to use 0x0A unless maxvgs -ge 11.

If maxvgs is at 10, you'll need to increase it.

kmtune -q maxvgs

-denver

[Robert-Jan Goossens]

Chris,

Could you check your kernel parameter maxvgs?

Regards,
Robert-Jan

[Chris Fadrowski]

actually i did have it 0x0a0000 and it didn't work, it must be the kernel settings you pointed out. I will look at that.

Well, you where right, the setting in maxvgs was incorrect. Slipped my mind even to look at that. thanks.

[melvyn burnard]

at least maxvgs i sremoved from HP-UX 11iv3 to my knowledge, one less thing to worry about