topic Re: increase root file system size in Operating System - HP-UX

increase root file system size

Karthik_Bang — Thu, 28 Jul 2011 15:08:02 GMT

HI All.

Please provide the steps to increase the 11.23 root file system size

Filesystem kbytes used avail %used Mounted on
/dev/vg00/lvol3 1048576 304400 738416 29% /

# vgdisplay
--- Volume groups ---
VG Name                     /dev/vg00
VG Write Access             read/write
VG Status                   available
Max LV                      255
Cur LV                      8
Open LV                     8
Max PV                      16
Cur PV                      1
Act PV                      1
Max PE per PV               4369
VGDA                        2
PE Size (Mbytes)            64
Total PE                    4359
Alloc PE                    541
Free PE                     3818
Total PVG                   0
Total Spare PVs             0
Total Spare PVs in use      0

#

Re: increase root file system size

James R. Ferguson — Thu, 28 Jul 2011 15:30:39 GMT

Hi:

This question was asked yesterday, too. See the commentary (suggested methods) here:

http://h30499.www3.hp.com/t5/System-Administration/how-to-extend-root-filesystem/m-p/4841799#M393440

Regards!

...JRF...

Re: increase root file system size

Patrick Wallek — Thu, 28 Jul 2011 16:30:43 GMT

Why do you think you need to increase root? It is already at 1 GB in size, which is oversized in my opinion, and only 300MB or so is in use.

This file system looks to be in OK shape to me.

Re: increase root file system size

awsmile — Fri, 23 Sep 2011 03:39:16 GMT

just use ignite to increase the root file system.

Re: increase root file system size

Bill Hassell — Thu, 29 Sep 2011 23:00:40 GMT

The root filesystem should be static, that is, does not grow and contains nothing but /etc, /dev and /bin. In fact, the / directory should not have any files at all, and certainly no applications or data directories should exist in /. There are a lot of baadly written application installers that place large files in /. Find the misplaced directories like this:

du -kx / | sort -rn | head -10

The two largest directories under / should be /sbin and /etc and for 11.23, about 300 MB occupied for an average system, possibly 500-600 MB for a system with hundreds of LUNs. So your current usage is normal and the 1GB size is reasonable. But wanting to increase it? The / filesystem is far too critical to place random files and directories. It is why moving root's HOME directory is so important. One small mistake by a root user and the entire computer will have to be reinstalled. Applications are installed in /opt, large data directories have their own volume groups and lvols.

With all that said, trying to increase / is very invasive and would require a number of risky steps for a novice system administrator. It is far safer to enforce good sysadmin practices.

Re: increase root file system size

vjta — Sat, 15 Oct 2011 05:42:12 GMT

Take Ignite Backup & adust the filesystems while Ignite resotre.

Just ensure Ignite Depot is installed in the system.

Regards

Vjta

Re: increase root file system size

f. halili — Thu, 10 Nov 2011 19:28:52 GMT

Take an ignite backup or your host. Re-ignite it but this time when you go to the tab for the Fielsystems change the size for the root VG.

Cheers,

f.halili