topic Re: Increasing Filesystem Space!! in Operating System - HP-UX

Increasing Filesystem Space!!

sara1 — Mon, 09 Jan 2006 04:55:57 GMT

HI,
I am new to HP.
In a system I have some filesystems which are almost 100% utilized. I need to increase the filesystem capacity by at least 50%.
I dont have space left in the volume group.
Can any body please help.
VG Name /dev/vgp_d1
VG Write Access read/write
VG Status available
Max LV 255
Cur LV 28
Open LV 28
Max PV 16
Cur PV 2
Act PV 2
Max PE per PV 26019
VGDA 4
PE Size (Mbytes) 4
Total PE 34686
Alloc PE 34280
Free PE 406
Total PVG 0
Total Spare PVs 0
Total Spare PVs in use 0

Re: Increasing Filesystem Space!!

MarkSyder — Mon, 09 Jan 2006 05:06:06 GMT

If you have no spare capacity in the vg you have three options:

1. look for redundant files (e.g. old log files) in the filesystem and delete them to free space

2. replace the disc with a larger one

3. add a second disc to the vg.

My preference would be for option 1 - only consider options 2 and 3 if you can't free enough space.

Run the command:

du -k|sort -k1,1nr|pg

to see which directories are taking up most space. cd to the directories one at a time and run:

ll|sort -k5,5nr|pg

to see the largest files.

Mark Syder (like the drink but spelt different)

Re: Increasing Filesystem Space!!

Arunvijai_4 — Mon, 09 Jan 2006 05:06:20 GMT

Hi Sara,

Check these threads for more information,

http://forums1.itrc.hp.com/service/forums/questionanswer.do?threadId=981478
http://forums1.itrc.hp.com/service/forums/questionanswer.do?threadId=84728

http://www2.itrc.hp.com/service/james/search.do?todo=search&admit=-1335382922+1136800883415+28353475&searchtext=Increase+File+system&from=forums&origin=0&submit.x=0&wpa=forums1.itrc.hp.com%3A80&submit.y=0&searchcategory=ALL&hpl=1&searchcriteria=allwords&rn=25&source=7000&presort=rank&chkServStor=on&esc=us.support.itrc.hp.com

-Arun

Re: Increasing Filesystem Space!!

Eric Antunes — Mon, 09 Jan 2006 05:08:05 GMT

Hi Sara,

If you have Online JFS it is easy to do via SAM. If you do not have it, check this thread:

http://forums1.itrc.hp.com/service/forums/questionanswer.do?threadId=618355

Best Regards,

Eric Antunes

Re: Increasing Filesystem Space!!

Mark Nieuwboer — Mon, 09 Jan 2006 05:08:56 GMT

Hi Sara1,

Do you have online JFS.
Futher more how big is the filesystem
How is your lv build.
can you post vgdisplay -v vgp_dp1
and tel which filesystem has to be increased.
df -k filesystem.

grtz. Mark

Re: Increasing Filesystem Space!!

Sivakumar TS — Mon, 09 Jan 2006 05:09:39 GMT

Dear Sara,

As you have 406PEs free and each PE is 4 MB in this VG, you can extend the filesystem to another 1600MB.

you can use

#lvextend -L

Latter you can use #extendfs to grow the filesystem.

With Regards,

Siva.

Re: Increasing Filesystem Space!!

Muthukumar_5 — Mon, 09 Jan 2006 05:09:46 GMT

which file system do you want to increase? Is it / or swap or any other file system?

For root and root swap you have to newly create file system.

Other file system,

If it is having onlineJFS support then using lvextend you can increase the size,

else unmount the file system and increase size. Then mount the file system back.

--
Muthu

Re: Increasing Filesystem Space!!

Muthukumar_5 — Mon, 09 Jan 2006 05:11:25 GMT

Example for file system extend is available in lvextend man page as,

Increase the size of a file system existing on a logical volume.

First, increase the size of the logical volume.

lvextend -L 400 /dev/vg06/lvol3

Unmount the file system.

umount /dev/vg06/lvol3

Extend the file system to occupy the entire (larger) logical volume.

extendfs /dev/vg06/rlvol3

Remount the file system.

mount /dev/vg06/lvol3 /mnt

--
Muthu

Re: Increasing Filesystem Space!!

Devender Khatana — Mon, 09 Jan 2006 05:14:00 GMT

Hi,

You still have 406*4=1624MB free space in the vg. Is this space enough for your requirements ? If not then do you have some space / unused disk ? In both the above case you can extend the file systems.

Case 1 (Within existing space)

1. unmount the file system which is required to be extended.

2. #lvextend -l xxxx /dev/vgp_d1/lvol_name

Where xxxx is the PE number of the lvol after extending and lvol_name is the device file name.

3. #extendfs -F vxfs /dev/vgp_d1/rlvol_name

4. #mountall

5. #bdf to confirm the new size and utilization.

Case 2 ( by adding another disk to VG)

1. #pvcreate /dev/rdsk/cxtydz
(Where /dev/rdsk/cxtydz is the new disk. Max. should not be of more than 104GB otherwise only 104GB can be used rest will be waste.

2. #vgextend /dev/vgp_d1 /dev/dsk/cxtydz

Followed by these two steps follow the steps in case 1.

Also if you have online JFS installed, you will not be required to unmount the file systems and instead of extendfs use fsadm command.

Repeat the procedure for multiple file systems if required.

HTH,
Devender

Re: Increasing Filesystem Space!!

sara1 — Mon, 09 Jan 2006 05:24:49 GMT

HI,
There is no space in the volume group.
So what needs to be done.

Re: Increasing Filesystem Space!!

sara1 — Mon, 09 Jan 2006 05:26:49 GMT

There is no space in VG.
Can you tell me what needs to be done in this case.

Re: Increasing Filesystem Space!!

Arunvijai_4 — Mon, 09 Jan 2006 05:31:50 GMT

Then, you need to add more disks to your VG. If you do so, you will get more space to allocate.

-Arun

Re: Increasing Filesystem Space!!

MarkSyder — Mon, 09 Jan 2006 05:33:56 GMT

Please see my original reply - if possible, you should release space by deleting redundant files. Only if you can't release enough space for your needs do you need to consider a new disc.

Mark

Re: Increasing Filesystem Space!!

Devender Khatana — Mon, 09 Jan 2006 05:35:34 GMT

Hi,

The details provided by you show that there is still 1.6GB of free space in the VG. But if tat do not fulfill your requirements of the expansion you can follow the case 2 mentioned in my earlier post which includes adding another disk to the VG and if no space disk is there in the system then adding it to system as well.

HTH,
Devender

Re: Increasing Filesystem Space!!

Henk Geurts — Mon, 09 Jan 2006 05:35:54 GMT

add the new disks to the system.
insf -e
ioscan -fnCdisk
pvcreate
vgextend
lvextend
fsadm

done.!

Re: Increasing Filesystem Space!!

Henk Geurts — Mon, 09 Jan 2006 05:36:25 GMT

add the new disks to the system.
insf -e
ioscan -fnCdisk
pvcreate
vgextend
lvextend
fsadm

done.!
with all the correct parameters of cource

Re: Increasing Filesystem Space!!

sara1 — Mon, 09 Jan 2006 06:52:23 GMT

How can i check if there is any free disk in the system.

Re: Increasing Filesystem Space!!

Mark Nieuwboer — Mon, 09 Jan 2006 06:56:30 GMT

ioscan -fnC disk

grtz. Mark

Re: Increasing Filesystem Space!!

Devender Khatana — Mon, 09 Jan 2006 06:58:25 GMT

Hi,

SAM->Disks and File Systems->Disk Devices

See for unused under use tab.

If the system has no uncooked file system, whole disk is not used for swap and only LVM is used for disk management then the information will be correct.

Also take some time to assign points to the responses to your threads.

HTH,
Devender

Re: Increasing Filesystem Space!!

sara1 — Mon, 09 Jan 2006 07:00:54 GMT

from ioscan -fnC disk how can i know if its free