mount new device

[szhiyong]

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

[Jack Fan]

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

[Vijeesh CTK · Accepted solution]

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

[szhiyong]

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

[S.K. Chan]

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.

[Michael Tully]

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

[Fragon]

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

[V. V. Ravi Kumar_1]

hi,

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

regds

[szhiyong]

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

[szhiyong]

Hi,

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

Thanks a lot.

zhiyong

[Vijeesh CTK]

hi

diskinfo /dev/rdsk/c1t4d0

Cheers

CTK

[szhiyong]

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

[szhiyong]

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

[szhiyong]

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

[szhiyong]

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

[Vijeesh CTK]

look at my first reply

CTK

[Vijeesh CTK]

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

[szhiyong]

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

[Vijeesh CTK]

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

[Animesh Chakraborty]

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)

[szhiyong]

Hi,Vijeesh and Animesh,

Thanks a lot for help.

I change 0x0140000 as 0x010000, it works, but it still have the error message:
Can not open physical volume
"c1t4d0".

The "ioscan -funC disk" file is attached.

Thanks for your help again.

zhiyong

[Animesh Chakraborty]

"I also do "diskinfo /dev/rdsk/c1t4d0", the size is 0 byte."

0 bytes means there is something is wrong with the drive.
Get hardwere engineer to replace the disk if not any lose connections.

[Vijeesh CTK]

do a pvcreate -f /dev/rdsk/c1t4d0

and check the diskinfo /dev/rdsk/c1t4d0

what is it showing

ad per ioscan the disk is 18GB normal SCSI disk.

CTK

[Michael Tully]

Was this a new disk or old one?

If it is a new one, get it replaced, it is faulty. If it is an old one it is no good.

Sorry

[szhiyong]

Hi,Everyone,

Thanks a lot for your help.

I will ask the manufacture to replace it.

zhiyong