topic Re: extend the root file system in Operating System - HP-UX

extend the root file system

hp admin — Thu, 25 Mar 2004 06:52:25 GMT

Hello,

plz, how can I extend the root file system ?
(ie: /)

Even if with the install CD, and start the system on sigle user, the patition can't be extended.

Please, your help;

Re: extend the root file system

Robert-Jan Goossens — Thu, 25 Mar 2004 06:58:11 GMT

Hi,

You will have to use an ignite (bootable) tape. Any specific reason to extend / filesystem ?

Kind regards,
Robert-Jan

Re: extend the root file system

Darren Prior — Thu, 25 Mar 2004 06:59:21 GMT

Hi,

This is best done by making an Ignite image of vg00 and reapplying it, at which point you should then specify any changes to filesystem sizes. There's documentation available at http://docs.hp.com

regards,

Darren.

Re: extend the root file system

Sanjay Kumar Suri — Thu, 25 Mar 2004 07:01:07 GMT

Are you following the steps:
Power --> Esc --> menu choice a
>boot pri isl
interact w/IPL? yes

ISL>hpux -lm

Here you can extend the root file system.

sks

Re: extend the root file system

Mobeen_1 — Thu, 25 Mar 2004 07:04:07 GMT

Nour,
Try the link below from the ITRC forum
http://forums1.itrc.hp.com/service/forums/questionanswer.do?threadId=146622

If you would like to download ignite, which is probably the best bet to extend ur root file system follow the link below

http://www.software.hp.com/products/IUX/download.html

rgds
Mobeen

Re: extend the root file system

Pete Randall — Thu, 25 Mar 2004 07:05:26 GMT

LVM maintenance mode is not going to help you in this. The problem is that the /stand, swap and / (the root file system), all need to be contiguous. In order to increase /, you would have to move the lvol containing /home.

The easiest way to do this is to make an ignite backup tape, boot off it and resize your root logical volumes at that point.

Pete

Re: extend the root file system

KapilRaj — Thu, 25 Mar 2004 07:49:16 GMT

Hello,

You can not extend as there is no contigous space available for extending the root volume !

Ignite is the best and safe. Still if you wanna do some LVM tasks, I have documented how to increase /stand in the following thread. With some slight modifications u can use it for root filesystem as well. I have tested and it works fine !

http://forums1.itrc.hp.com/service/forums/parseCurl.do?CURL=%2Fcm%2FQuestionAnswer%2F1%2C%2C0xd1d6d08cc06fd511abcd0090277a778c%2C00.html&admit=716493758+1080218306472+28353475

Here i have adjusted the size of SWAP a bit so that it could be successfully added to the /stand filesystem ... As you have root filesystem it is more simple as you may have /var or /opt to be moved a little further and then increase root filesystem.

The Logic is as follows

1. Goto LVM Maintanance Level
2. Find out the next lvol after root lvol
3. Create a similier one somewhere else in the rootvg and create fs on it.
4. Transfer the data to the new filesystem
5. Remove the old filesystem and lvol.
6. You will have contigous space for extending root lvol now !
7. Extend it and resize the filesystem with extendfs
8. Compensate the /etc/fstab as you have changed the device file !
9. Update BOOT,ROOT,SWAP and dump definitions using lvlnboot

REBOOT !!!!!

This is really interesting ... why don't you try this after taking an ignite backup ? If u do a mistake u can always go back to your ignite !

Notes :- This method will save lots of time ! BUUUUUT never go for this first time w/o a proper backup !!!!!

Regds,

Kap

Re: extend the root file system

Lorenzo Facello — Fri, 26 Mar 2004 05:09:32 GMT

Hi,
I think you have to make an ignite
make_tape_recovery -A
reboot
stop the boot
type search
(choose the tape to go up)
interact with IPL - type no

after some minuts -pay attention
becouse you have to type enter to stop
the batch-mode installation...
now you can select - Install hp-ux
and change the size of /

Hope this Helps
L.

Re: extend the root file system

Sanjiv Sharma_1 — Fri, 26 Mar 2004 05:24:10 GMT

Hello,

Please check this document:
http://www2.itrc.hp.com/service/cki/docDisplay.do?docLocale=en_US&docId=200000062908171

Re: extend the root file system

hp admin — Tue, 30 Mar 2004 10:08:46 GMT

Thank you all for your responses.

I'll try the last propositions, because if the station is the principale server I prefer extend its root file system without shutdown it.

Re: extend the root file system

hp admin — Fri, 02 Apr 2004 05:55:30 GMT

I added a new disk on my station, and created a new LV nmed lvoltmp.

Then I launch the following command, and get some data from my old LV lvol until block 505

dd if=/dev/vg00/rlvol9 of=/dev/vg00/rlvoltmp bs=1024k count=505

And, now I have another problem:
How can I know the number of blocks of a Logical Volume ?

I want to do the same command and specify exactelly which block copied since I know the corrupted one.

Thanks again.

Re: extend the root file system

SureshKumar_2 — Fri, 02 Apr 2004 06:21:13 GMT

Hi

U can do without using count=505,

it is only for end count, - if u give w/o count it may take same time.

Once when u say u want to extend the /, certainly ur / may filled.... Why cant u try without count , and proceed further.

Re: extend the root file system

Robert-Jan Goossens — Fri, 02 Apr 2004 06:26:51 GMT

SureshKumar

http://forums1.itrc.hp.com/service/forums/questionanswer.do?threadId=533594

Regards,
Robert-Jan

Re: extend the root file system

hp admin — Wed, 07 Apr 2004 12:27:57 GMT

Thank's Sanjiv,

It's OK your document, my root LV is extended now.

I invite any one want extend its root file system to use just this link:

http://www2.itrc.hp.com/service/cki/docDisplay.do?docLocale=en_US&docId=200000062908171

Thank's again for your help.