topic Re: mount new device in Operating System - HP-UX

mount new device

szhiyong — Wed, 24 Jul 2002 03:04:18 GMT

Hi,

I installed one new disk drive. I use "ioscan -funC disk", I can see the information about the new drive:
class I H/W Path Driver
disk 5 8/16/5.4.0 sdisk
/dev/dsk/c1t4d0 /dev/rdsk/c1t4d0
Then I "mount /dev/dsk/c1t4d0 /usr4", there is error message:
can not open /dev/rdsk/c1t4d0

Would someone please tell me how to solve this problem?

Thanks a lot!

zhiyong

Re: mount new device

Jack Fan — Wed, 24 Jul 2002 03:10:58 GMT

Hello,
Before you mount this device,
you need
1. create pv.
2. create vg.
3. create lv.

And what kind of this device.
Disk or CD-ROM?

Regards,
Jack Fan

Re: mount new device

Vijeesh CTK — Wed, 24 Jul 2002 03:18:05 GMT

hi

U can use LVM for mounting that disk

1. pvcreate /dev/dsk/c1t4d0
2. mkdir /dev/vgnew
3. mknod /dev/vgnew/group c 64 0x0140000 ( minor no(0x140000) shud be unique)
4. vgcreate /dev/vgnew /dev/dsk/c1t4d0
5. lvcreate -L size in MB /dev/vgnew
6. newfs -F vxfs /dev/vgnew/rlvol1
7. mount /dev/vgnew/lvol1 /your mount directory

or

create filsystem on the device
newfs -F vxfs /dev/rdsk/c1t4d0
and mount it
mount /dev/dsk/c1t4d0 /your mount dir

Cheers

CTK

you can

Re: mount new device

szhiyong — Wed, 24 Jul 2002 03:19:35 GMT

Hi,Jack,

Thanks for your reply.

It is disk. Can I mount the disk drive directly? Because I do not want to creat volume group.

zhiyong

Re: mount new device

S.K. Chan — Wed, 24 Jul 2002 03:24:46 GMT

If you're not using LVM you need to "newfs" on the disk first before mounting it.
# newfs -F vxfs /dev/rdsk/c1t4d0
===> Replace "vxfs" with "hfs" is you plan to use HFS.
# mount /dev/dsk/c1t4d0 /usr4
===> Now you mount it.

Re: mount new device

Michael Tully — Wed, 24 Jul 2002 03:27:06 GMT

That depends if you LVM or not. If so you can add it to an already defined volume group.

# pvcreate /dev/dsk/c1t4d0
# vgextend /dev/yourvg /dev/dsk/c1t4d0

The disk is then ready to use, to either create additional logical volumes or make existing ones larger. If it is the later you will need the online JFS product or you will need to unmount one, extend it and re-mount it.

# umount /myfilesystem
# lvextend /dev/yourvg/yourlv
# extendfs /dev/yourvg/ryourlv
# mount /myfilesystem

Re: mount new device

Fragon — Wed, 24 Jul 2002 03:47:56 GMT

You must decide how to use your new disk:whole disk management or use LVM!
If whole disk management is chosen, you must create file system first use "newfs" (because you want to mount it to /usr4).
If LVM is selected, you must create PV first,and then VG,and then LV.
Detail operations just as all above.

live as you wish
ux

Re: mount new device

V. V. Ravi Kumar_1 — Wed, 24 Jul 2002 03:53:37 GMT

hi,

u have to create pv (pvcreate), vg (vgcreate) and lv (lvcreate). then ur extend lv (lvextend)and mount.

regds

Re: mount new device

szhiyong — Wed, 24 Jul 2002 03:58:21 GMT

Hi,

Thanks for all your reply.

There is another disk drives (c0t5d0) in my workstation. It is using LVM. First, I try to avoid the LVM for c1t4d0, I do:
newfs -F hfs /dev/rdsk/c1t4d0
There is error message:
newfs (hfs):Cannot open /dev/rdsk/c1t4d0
newfs (hfs):Device busy

I have another question, How can I know the size of c1t4d0 disk drive?

Thanks a lot! I appreciated it.

zhiyong

Re: mount new device

szhiyong — Wed, 24 Jul 2002 04:07:36 GMT

Hi,

Would someone tell me how to know the maximum size of c1t4d0?

Thanks a lot.

zhiyong

Re: mount new device

Vijeesh CTK — Wed, 24 Jul 2002 04:13:10 GMT

hi

diskinfo /dev/rdsk/c1t4d0

Cheers

CTK

Re: mount new device

szhiyong — Wed, 24 Jul 2002 04:29:36 GMT

Hi,

Thanks for fast reply!

i try "pvcreate /dev/dsk/c1t4d0", there is error message:
can not open physical volume
"/dev/dsk/c1t4d0"

Then i try "pvcreate /dev/rdsk/c1t4d0", there is no problem, is this command right?

Then I continue to do until the command"
vgcreate /dev/vg01 /dev/dsk/c1t4d0
There is error messege:
vgcreate: can not open the control file
"/dev/vg01/group"

Would someone please tell me what is problem?

Thanks a lot!

zhiyong

Re: mount new device

szhiyong — Wed, 24 Jul 2002 04:30:32 GMT

Re: mount new device

szhiyong — Wed, 24 Jul 2002 04:30:35 GMT

Re: mount new device

szhiyong — Wed, 24 Jul 2002 04:32:11 GMT

Re: mount new device

Vijeesh CTK — Wed, 24 Jul 2002 04:35:11 GMT

look at my first reply

CTK

Re: mount new device

Vijeesh CTK — Wed, 24 Jul 2002 04:37:57 GMT

1. pvcreate /dev/rdsk/c1t4d0
2. mkdir /dev/vgnew
3. mknod /dev/vgnew/group c 64 0x0140000 ( minor no(0x140000) shud be unique)
4. vgcreate /dev/vgnew /dev/dsk/c1t4d0
5. lvcreate -L size in MB /dev/vgnew
6. newfs -F vxfs /dev/vgnew/rlvol1
7. mount /dev/vgnew/lvol1 /your mount directory

CTK

Re: mount new device

szhiyong — Wed, 24 Jul 2002 04:55:38 GMT

Hi,Vijeesh,

Thanks a lot for your help!! I appreciate it.

I do the following steps:
1.pvcreate /dev/rdsk/c1t4d0
2. mkdir /dev/vgnew
3. mknod /dev/vgnew/group c 64 0x0140000
There is no problem for the fist three steps, but I do:
4.vgcreate /dev/vgnew /dev/dsk/c1t4d0
There is error message:
vgcreate: can not open the control file
"/dev/vg01/group"
No such device.
I also do "diskinfo /dev/rdsk/c1t4d0", the size is 0 byte.

Thanks a lot for your help again.

zhiyong

Re: mount new device

Vijeesh CTK — Wed, 24 Jul 2002 05:00:08 GMT

hi

I would like to know that c1t4d0 is CD drive or not. are you sure that you are having 2 disks in your system. Just Check the existence of disks in your system with the below command

ioscan -fnC disk or ioscan -funC disk

In the last column( description) u can find it the name of manufacturer. just look into that and reply

CTK

Re: mount new device

Animesh Chakraborty — Wed, 24 Jul 2002 05:04:19 GMT

Hi,
u have used wrong minor number
"mknod /dev/vgnew/group c 64 0x0140000 "
instead use mknod /dev/vgnew/group c 64 0x010000

you know why??
014 means 20 and your max_vg parameter in the kernel is 10(default)