What you want to do, can be done with a combination of parted
and resize2fs. Take good backups first. It would have been
easier if you were using LVM.
basic strategy, resize2fs to shrink /usr/local file system,
then parted to shrink /usr/local partition,
then parted to grow /usr partition.
The last time I did this I had to actually delete one of
the partitions out of the partition table and then re-create it
in the same spot. Not for amateurs.
Steve
On Thu, 22 Jul 2010, Larry Linder wrote:
Because we are in a little town (wide spot in road) the DSL is not the most
reliable. That is why I down loaded the 8 disks from another source and
wanted to update systems to SL 5.5.
This install try was an update and not a new installation.
There have been a lot of additions to this system, for doing FFT, Power
Spectral Density, and a lot of signal processing. Unfortunately /usr has
expaned beyond our first guess and /usr/local is almost empty.
Since these may not be adjacent partitions. Is there anyway to expand /usr
and shrink /usr/local.
Thanks for the insight.
Larry Linder
On Thursday 22 July 2010 10:32, you wrote:
Larry Linder wrote:
When installing SL5.5 over SL5.4 about mid way into the Disk 2 I get an
Error message to REBOOT.
204 Meg on /mnt/sysimage/usr
When I look at /mnt it is empty after reboot.
My guess is that update ran out of disk space, and the the sysimage/usr
is removed after ERROR is detected and REBOOT message is displayed.
Is there anyway to change the location of sysimage/usr to some other disk
on the system?
The sda? contains all the system directories and is 36 G, about 1/2 of it
is uncommitted. /usr is 8G and 94% full. Other directories have at
least a G of spare space.
I need to change partition sizes but hate to waste a lot of time
guessing.
Thank You
Larry Linder
Hi Larry,
One quick question before I proceed. Are you doing a real "upgrade" or
an "install"
An "upgrade" is where SL 5.4 stays there and you just update the
packages in it. If that is the case, using the installer isn't the
recommended way of updating it. It is much easier to to an upgrade via
yum. http://www.scientificlinux.org/documentation/howto/upgrade.5x
An "install" is where you wipe and reformat everything except maybe your
home and data partitions.
I am going to assume that you are doing a "install" or SL 5.5 over a
previously installed SL 5.4.
If you are doing this, then you *need* to reformat the partitions that
do not contain your home area or data. Otherwise the install starts
adding to what is already there, and as you saw, it can fill up.
Patitions you should format if you are doing an install.
/
/usr
/var
/boot
As Steve said in a previous email, if you can fit everything onto /
there is often no reason to create a /usr. Take that space and add it to /
Hopefully this is enough information, along with Steve's, to get you going
Troy
--
------------------------------------------------------------------
Steven C. Timm, Ph.D (630) 840-8525
t...@fnal.gov http://home.fnal.gov/~timm/
Fermilab Computing Division, Scientific Computing Facilities,
Grid Facilities Department, FermiGrid Services Group, Assistant Group Leader.
