Help! understanding AIX filesystem.

[Peter Laursen]

Hello All

I have extended hd2( /usr ) by 300 PP's of 4MB each(now totals 367 PP), but
I dont get more diskspace available. What am i doing wrong?

lsfs reports: jfs size=540672
this size hasnt changed a bit!

fsck /usr reports:
7732 files, 416888 blocks 123784 free

I must install ORACLE 8.0.5 on this AIX 4.3 machine. I have made four
mountpoints on /usr but the oracle installer always says only 60M
availble??

foregive me for beeing a clueless unix newbie :-)

Thanks
Peter

[Peter Laursen]

Thanks a lot!

Another thing:
when i create a new user with smit, this new user does not have execute
priv on emacs? also the user doesnt have execute on his own .profile? (ksh
shell)

Thanks

> # chfs -a size=+1 /usr
> and then df /usr

[Hernan Schiavi]

Hi Peter, please make sure that you not only extend the LV, if you do this,
extend the FS. Next time extend the FS only, this will increase the size of
the LV too.
Hope this help.

Saludos.
Hernan.

[AIXMighty!]

seems to me a problem with the emacs executable permission. as to .profile,
ksh reads it anyway so it shouldn't matter... if you want, you can put an
echo in .profile and test it just to make sure it works...

Orphy! :-)
Dallas, TX

In article <01bea124$019c7d00$2c289a0a@apollo>,

[Walsh Brown]

In article <01bea11a$c47a3ec0$2c289a0a@apollo>,
"Peter Laursen" < p...@edbgruppen.dk> wrote:
> Hello All

>
> I have extended hd2( /usr ) by 300 PP's of 4MB each(now totals 367
PP), but
> I dont get more diskspace available. What am i doing wrong?
>

> lsfs reports: jfs size=540672
> this size hasnt changed a bit!
>
> fsck /usr reports:
> 7732 files, 416888 blocks 123784 free
>
> I must install ORACLE 8.0.5 on this AIX 4.3 machine. I have made four
> mountpoints on /usr but the oracle installer always says only 60M
> availble??
>
> foregive me for beeing a clueless unix newbie :-)
>
> Thanks
> Peter
>
>

Peter,

I am not sure if you fully understand AIX storage or not. A brief
overview:

In AIX you have physical volumes (PVs), logical volumes (LVs) and
filesystems. The physical volumes are the actual hard disk drives that
are attached and seen by the system. Logical volumes are an abstract
grouping of PVs to make them look like a larger collective drive. For
example, if you have 2 hardrives @ 1 GB apiece, you can put them in a
logical volume and make it look like 1 hard drive with 2GB of space.
Filesystems sit on top of logical volumes to give you an accessible
interface to your disks and data.

Now, I am not sure if you trying to increase the size of the /usr
filesystem or if you are trying to create and increase the size of a
raw disk LV (meaning no filesystem sits on top of it). I know Oracle
and other DBs managers have the capability of not going through a fs but
rather to a raw LV. I am going to assume that this is NOT the case.

If you want to increase the size of the filesystem, use the chfs
command (man chfs). Or if you feel more comfortable with SMIT then use
it. The command would be: smit chfs

When you use the chfs command (or SMIT) it will increase the size of the
filesystem and take care of the underlying LV for you as well (as long
as you have the disk space allocated).

Also, I also want to make sure that you are trying to indeed increase
the size of /usr and not a filesystem that is mounted on a mount point
in /usr. There is a difference. If you increase the size of /usr it
will NOT recursively increase the size of another filesystem that is
mounted within it. For example, if you have a filesystem that is
mounted on the /usr/oracle directory within /usr, then when you go to
increase /usr, /usr/oracle will NOT be increased in size. It will
remain the size it was before increasing /usr. To see your filesytem
sizes and mount points, use the df command (man df).

For more information about AIX you can use the online InfoExplorer
database (if it is installed). The command to fire it up is: info

If you don't have InfoExplorer installed, you can get to the AIX 4.3
documentation via the web:

http://www.austin.ibm.com/doc_link/en_US/a_doc_lib/aixgen/topnav/topnav.
htm

Otherwise, the man pages will become your best friend...

-- Walsh

--
Walsh Brown
wbr...@fheg.follett.com

--== Sent via Deja.com http://www.deja.com/ ==--
---Share what you know. Learn what you don't.---

[Bela Gazdy]

Walsh Brown <wal...@my-dejanews.com> wrote:
WB> In article <01bea11a$c47a3ec0$2c289a0a@apollo>,
WB> "Peter Laursen" < p...@edbgruppen.dk> wrote:
>>
<snip>
>>

WB> In AIX you have physical volumes (PVs), logical volumes (LVs) and
WB> filesystems. The physical volumes are the actual hard disk drives that
WB> are attached and seen by the system. Logical volumes are an abstract

Just a minor, hair-splittin' comment here: Disk drives become physical
volumes only when you stick them into a "Volume Group", yet another nice
concept in AIX.

--
Bela Gazdy, Euclid Systems Support and | who shook his family tree,...
Curmudgeon of Teaching & Research @ITD | ...and a bunch of nuts fell out.