/tmp & /opt extending

[kunjuttan]

Hi gurus,
I have 2 servers in which I need to extend some filesystems.
1)In one server two FS are in threshold level.

/dev/vg00/lvol6 2097152 1890928 204768 90% /tmp
/dev/vg00/lvol4 2097152 1803720 291200 86% /home

vgdisplay output is--
VG Name /dev/vg00
VG Write Access read/write
VG Status available
Max LV 255
Cur LV 13
Open LV 13
Max PV 16
Cur PV 1
Act PV 1
Max PE per PV 4356
VGDA 2
PE Size (Mbytes) 32
Total PE 4346
Alloc PE 2835
Free PE 1511
Total PVG 0
Total Spare PVs 0
Total Spare PVs in use 0

2)In other server one FS are in threshold level.

/dev/vg00/lvol4 7274496 6835232 435840 94% /opt

vgdisplay output is--
VG Name /dev/vg00
VG Write Access read/write
VG Status available
Max LV 255
Cur LV 15
Open LV 15
Max PV 16
Cur PV 1
Act PV 1
Max PE per PV 4465
VGDA 2
PE Size (Mbytes) 64
Total PE 4455
Alloc PE 3215
Free PE 1240
Total PVG 0
Total Spare PVs 0
Total Spare PVs in use 0

In both the cases free PE s are available. Please tell me how to proceed to extend these three FS.Is this required a reboot to single user mode?

OS - HPUX11.23
OnlineJFS not available.
RX series Servers-Itanium CPU

[Abid Iqbal]

Backup data on both the mounts.
Reboot system in single user mode.
Extend lv and extend filesystem using extendfs.

[Raj D.]

Kunjuttan,

Begin with this:

>>
/dev/vg00/lvol6 2097152 1890928 204768 90% /tmp
/dev/vg00/lvol4 2097152 1803720 291200 86% /home

> OnlineJFS not available.
- How do you know is not there.


For above two: (With online jfs )
1. # lvextend -L 4096 /dev/vg00/lvol4
2. # fsadm -b 4096m /home



- without online jfs:
1. # fuser -cu /home
2. # fuser -ku /home # will kill all /home processes.
3. # umount /home
4. # lvextend -L 4096 /dev/vg00/lvol4
5. # extendfs /dev/vg00/rlvol4
6. # mount /home # Verify.



Cheers,
Raj.

[Raj D.]

Kunjuttan,

If you are trying /opt and /tmp without online jfs you can do from single user mode.

Online JFS can be cheked with:
# swlist -l product | grep -i jfs
# /sbin/vxlicrep

without online JFS :
- reboot the system
- Interupt boot sequence.
- from EFI shell:> boot vmunix -is
- activate vg00
- mount all but /opt
#(check /etc/fstab ) for lvol reference .
- extend /opt
# lvextend -L ...
# extendfs /dev/vg00/rlvol..

- mount and check. # bdf /opt
- same for /tmp .
- boot in multiuser mode. # init 3
or reboot .


Cheers,
Raj.

[kunjuttan]

"If you are trying /opt and /tmp without online jfs you can do from single user mode."

So can i do it in multiusermode also,if onlinejfs is ther???

[stephen peng]

quite simple, like you want to extend /tmp to 4096m:
# lvextend -L 4096 /dev/vg00/lvol6
# fsadm -b 4096m /tmp

[Fabio Ettore]

Hi,
if you have OnlineJFS ("swlist -l product |grep -i online" to check) you can do that in multi-user mode by

lvextend -L /dev/vg00/lvol4
fsadm -F vxfs -b /home
(this is the sample just for /hoem on the first system)

Otherwise you have to get single-user mode and using extendfs with filesystems unmounted.

HTH.

Best regards,
Fabio

[Raj D.]

Kunjuttan,
(again),

> So can i do it in multiusermode also,if onlinejfs is ther???

- Yes, this is pretty easy if you have Online JFS. Online JFS comes with MCOE Operating OE. by Default.

Check type of OE you have:
# swlist -l bundle | grep HPUX11


With online JFS, it is as simple as just typing two command:(lvextend & fsadm )

Ex: Suppose you want to add 2GB to those 2GB FS.
1. # Check the current size with lvdisplay
# lvdisplay /dev/vg00/lvol6 | grep "LV Size"
2. # Add 2048 to that value, to make 2GB extension.
- So total comes 4096. (This is for /tmp)
# lvextend -L 4096 /dev/vg00/lvol6
# fsadm -b 4096M /tmp
# bdf /tmp



3. Done.

Enjoy,
Raj.

[kunjuttan]

i already mentioned that onlinejfs is not there....

[Raj D.]

> i already mentioned that onlinejfs is not there....

- So you have to spend some $$$, or to accept the pain , as it is not straight forward without Online JFS.
- The main thinghe file system needs to be unmounted to be able to use extendfs command.
- /tmp and /opt cannot be unmounted when the system is in multiuser mode,(run level 3) (#who -r) as the files will be in use by the system and by the services.

Hth,
Raj.

[kunjuttan]

Hi gurus,
Pls guide me..am going to do the exention.
1)How can I go to single user mode directly from multiuser?
2)After booting into single user mode what I have to do??
vgchange -a y vg00
Mounting /.And any other file systems required??
3)Is it like normal fs extending procedure?

[Dennis Handly]

>1) How can I go to single user mode directly from multiuser?

You basically have to boot into single user mode, init -s won't work.

[Steven E. Protter]

Shalom,

Even without OnlineJFS this is pretty simple.

You just need to umount the file system and run extendfs

Problem is /tmp is usually pretty busy, and you will need to arrange a downtime. You need not go to single user mode, it would be enough to merely shut down applications that use /tmp

Of course single user or lvm maintenance mode does make all of this easier, but you have to sit through a reboot.

SEP

[kunjuttan]

Can you please give me the steps..
Is the command "shutdown -y now" is ok for booting in single user mode..
After booting in single user mode,what all things has to be done before going for an extension?And also Can i able login noramllay in single user mode..or mp login???

[KapilRaj]

init 1 will take you to single user mode ..

Once there, umount /tmp & /opt # Kill any process that is still accessing and extend the filesystem - procedure has been explained already. After this reboot the system.

Regards,

Kaps

[kunjuttan]

Do need to activate the VG00??And also the VG00 is mirrored..
How to know that the FS is accesing and how to kill that???-By fuser???

[VVS]

Use
fuser -cu /tmp --- To check the process accessing File system

Use
fuser -ku /tmp --- To kill the process.

Regards,
VVS

[kunjuttan]

Somewhat clear.Now my concern is how to boot into single-usermode in a RX series server.??my server model is-ia64 hp server rx7640.
And one more thing my rootvg is already mirrored.So anything else is to be done after extending the /tmp??

[VVS · Accepted solution]

You should interupt the booting when it ask you to press any key within 10 secs.

It will take you to menu, where you need to give this command.

Menu> bo pri

It will ask, do you want to interact with IPL Y/N ?

Give "Y" . It will take you to ISL prompt. In ISL give this command.

ISL>hpux -is

This will boot the system into single user mode.

-------

These are the steps to boot the integrity servers into single user mode.

Boot the system to the EFI manager screen.

EFI Boot manager screen:
-----------------------------------------------------------------------------------------

EFI Boot Manager ver 1.10 [14.57] Firmware ver 2.31

Please select a boot option

HP-UX Primary Boot: 0/1/1/1.2.0
EFI Shell [Built-in]
Boot option maintenance menu
Security/Password Menu


Use | and | to change option(s). Use Enter to select an option
-----------------------------------------------------------------------------------------

If a primary HP-UX boot option is available - select it by pressing enter


-----------------------------------------------------------------------------------------
(c) Copyright 1990-2003, Hewlett Packard Company.
All rights reserved

HP-UX Boot Loader for IPF -- Revision 1.73

Press Any Key to interrupt Autoboot
AUTO ==> boot :IINSTALL
Seconds left till autoboot - 9
Type 'help' for help
-----------------------------------------------------------------------------------------

>> Interrupt the auto-boot sequence by pressing the SPACE bar.
This will bring you to the HPUX> prompt.

For HP-UX Single user mode:

HPUX> boot vmunix -is

[VVS]

Can you paste the lvdisplay output for the LV which you want to extend?

[kunjuttan]

# lvdisplay /dev/vg00/lvol5
--- Logical volumes ---
LV Name /dev/vg00/lvol5
VG Name /dev/vg00
LV Permission read/write
LV Status available/syncd
Mirror copies 1
Consistency Recovery MWC
Schedule parallel
LV Size (Mbytes) 6016
Current LE 94
Allocated PE 188
Stripes 0
Stripe Size (Kbytes) 0
Bad block on
Allocation strict
IO Timeout (Seconds) default

[kunjuttan]

Use | and | to change option(s). Use Enter to select an option
-----------------------------------------------------------------------------------------

If a primary HP-UX boot option is available - select it by pressing enter


-----------------------------------------------------------------------------------------
(c) Copyright 1990-2003, Hewlett Packard Company.
All rights reserved

HP-UX Boot Loader for IPF -- Revision 1.73

Press Any Key to interrupt Autoboot
AUTO ==> boot :IINSTALL
Seconds left till autoboot - 9
Type 'help' for help
-----------------------------------------------------------------------------------------Can you please make this clear ???

[VVS]

If the disks are mirrored, and if you extend the lvol, mirrored disks also extend automatically

#lvextend -L /dev/vgxx/lvolx
#extendfs -F vxfs /dev/vgxx/rlvolxx

If enough space is there on both disks(provided strict allocation) mirror also will get extended automatically.

[VVS]

Interrupt the auto-boot sequence by pressing the SPACE bar.

This will bring you to the HPUX> prompt.

For HP-UX Single user mode:

HPUX> boot vmunix -is

[Aungshuman Paul]

Hi,

1. Reboot the system
2. Interupt the auto boot and going to EFI Built-in shell
3. In the shell prompt execute fs0:
4. Then in the fs0:> mode execute hpux -lm for boot the system in LVM maintainance mode.
5. In the LVM mainatince mode execute the following command for extend the LVM and file system.

Extend tmp mount point :

Default is 512 MB. Extend to 10 GB.

#lvextend -L 10240 /dev/vg00/lvol5
extendfs -F vxfs /dev/vg00/rlvol5

Do same for /opt mount point.

Aungshu

If it is helpful, please give me points . :)