How to decrease logical volume on HP-UX?

[Chris2005]

I have got another diskcabinet which I could attach to do system to gain more disk space. The only problem is I don't have a SCSI cable for that. I've contacted HP so now I'm waiting on their reply.

Thanx for you help.

[Chris2005]

I have got another diskcabinet which I could attach to the system to gain more disk space. The only problem is I don't have a SCSI cable for that. I've contacted HP so now I'm waiting on their reply.

Thanx for you help.

[Chris2005]

Actually it's not the root filesystem I need to reduce, but /opt. I made mistake about that.

Is it possible to reduce /opt in single mode without using Ignite or OnlineJFS?

[OldSchool]

you can re-size /opt in single user mode. note all of the warning about backup, resize, then restore (from above) still apply

[Bill Hassell]

The only file systems you cannot increase or reduce are / and /stand. You can reduce /opt in single user mode. HOWEVER: you must remove the data because it will be destroyed. You must backup /opt (twice if this server is important), then boot into single user mode. /opt will not be mounted so you just use lvreduce to change the lvol to size you want. Run newfs to recreate the directory structure and then restore /opt from your backup tape.

[RED-Dragon]

Hi Sundar,

We want to reduce lvol13 which is currently 1700GB, but there is another mount lvol14 point which is under this mount point lvol13. Now can we follow your solution?

/dev/vgvedas/lvol13
                   1782579200 542028352 1234416248   31% /CDBLprodrun
/dev/vgvedas/lvol14
                   102400000 60213192 41866424   59% /CDBLprodrun/dat

Thanks.

Tanjil

[Dennis Handly]

>there is another mount lvol14 point which is under this mount point lvol13

You should be able to umount /CDBLprodrun/data and mount it elsewhere.  Or remount it later.