Re- sizing logical volumes

[Yusupha Fye]

I have a problem with the logical volume holding my database. It is filling up very rapidly. I do have other LVs at are not taking up much space. For example...

bdf command reveals..

/dev/vg01/lvol1 35921920 34385433 1459293 96% /BASE
/dev/vg00/lvol9 1024000 719272 285819 72% /USERS

How can I increase the space allocated to /BASE and reduce that allocated to /USERS?

[Robert-Jan Goossens]

Hi,

Sorry not possible, you can not move space between volume groups.

post the ouput of
# vgdisplay -v

Regards,
Robert-Jan

[Naveej.K.A]

Hi,

Both the filesystems are on different volume group and there are very less chances that you can allocate the unused space to /BASE.


Regards,
Naveej

[Devender Khatana]

Hi,

Yes, you can not free space of a lvol in one VG to a lvol in another VG. You can not even assign unallocated space of one VG to another VG. Allthough you can remove one complete Physical Volume from one VG and move to another if it is totally free. So post the output of vgdisplay -v for both volume groups i.e. /dev/vg00 and /dev/vg01.

HTH,
Devender

[Kent Ostby]

Yusupha --

The only thing you could do would be to put a soft link from one filesystem to another.

Let's say you had a lot of your data in /BASE in a subdirectory called "mydata"
(i.e. /BASE/mydata)

What you could do is:

mv /BASE/mydata /USERS

Then:

ln -s /USERS/mydata /BASE

The files will move to /USERS but you can access them on /BASE.

It's not the cleanest, but it would help in the short term till you can get another disk to add to /dev/vg01.

Best regards,

Kent M. Ostby

[Yusupha Fye]

#vgdisplay -v outputs the following...

--- Logical volumes ---
LV Name /dev/vg01/lvol1
LV Status available/syncd
LV Size (Mbytes) 35080
Current LE 8770
Allocated PE 8770
Used PV 1

LV Name /dev/vg00/lvol9
LV Status available/syncd
LV Size (Mbytes) 1000
Current LE 250
Allocated PE 250
Used PV 1

[Devender Khatana]

Hi,
The only way what can help you for time being is creating link. Nothing else is possible as you have only one disk per VG. Meanwhile you can arrange a spare disk for adding to you vg01.

HTH,
Devender

[Tim Sanko]

The answer my friend is IGNITE.

Get a good ignite image after loading the latest pax patch, and then Ignite the server.

It creates a bootable tape. If you have the storage on another server then make an IGNITE network server.

Then you may take the system down and repartition your drive to your hearts desire safely and redistribute the storage safely and that will buy you time. Get more storage and either use sam or the pvcreate, lvadd, lvextend,extendfs procedure...

Tim Sanko

[Tim Sanko]

I am sorry I thought this was on hte same drive. Add a drive and follow the vgadd,lvextend,extendfs routine...

Tim

[Nguyen Anh Tien]

Impossible
Reason: /Users file system belong to vg00
and /BASE belong to vg01.

thing to think:(If vg00 contains more than two physical disk)
1. Backup all data inside two Partition
2. Reduce disk from vg00
3. Add disk to vg01
4. Increase /BASE file system.
That's all
tienna