Increase The size Of the "/usr" and "/opt"

[Christopher_63]

Dear friends,


Please how can i modify filesystems,like (/usr,/opt) after installation?

Ps : I have Linux Redhat 3 AS.

Best regards.

Thank's a lot.

[Steven E. Protter]

This is done with the fdisk command.

Hopefully you have some free space to allocate on the box.

I do not believe that either /usr or /opt has a requirement that it be contiguous.

If you are using LVM once the partition is set up, you can use extendfs on the filesystem.

In general, I overengineer my systems to avoid this issue, because the disk druid in install makes for easier filesystem/parition configuration.

I can tell you how to preserve your existing configuraion and do an OS reinstall to get you the larger partitions. Depends on what you are running.

SEP

[Ross Minkov]

Try using GNU Parted. It is a program for creating, destroying, resizing, checking and copying partitions, and the file systems on them. This is useful for creating space for new operating systems, reorganising disk usage, copying data between hard disks and disk imaging.

For more information gp to:
http://www.gnu.org/software/parted

Regards,
Ross

[Vitaly Karasik_1]

Right, you may use different tools [from gparted to Partition Magic], but in any case you should run full backup before.

The only [almost] 100% safe way to resize filesystem it's LVM.

[Tibor Bajnok]

If you need only a particular directory to be bigger (e.g. /usr/local) and have enough space on other disk or filesystem, you can create a directory on it and link it to the desired point.
So it can eliminate the need to rebuild the entire system.
(It's a special case.)