Big Endian | 30 Dec 02:45 2004

Instasll DiskSuite 4.1

>Hi Frank-Christian Kruegel-san ,
>
>Thank you for your advice.
>
>>RAID5 in software is slow. If speed matters, better use hardware 
>>RAID if money
>>permits or RAID10 (striping and mirroring, gives you less capacity).
>
>If you know, couldn't you please tell me the following.
>
>Is write/read performance of RAID5 in software lower than using hard 
>disk singly ?
>I need the performance of Soft-RAID as same as single hard disk.
>Purpose of using DiskSuite is to construct the large volume disk by 
>aggregation
>of low price disks.

If you don't have a hardware raid controller, yes it is much slower. 
If you are just looking for aggregation check out some of the LVM 
features of DiskSuite.  This will allow you more flexibility to add 
more drives later.  Raid is used when you need performance (raid 0), 
100% uptime (Raid 1), or a combination there of (these REALLY require 
a dedicated controller for performance gains: raid 3,4,5).

>Has operaton of Software RAID using DiskSuite lain a burden on CPU ?
>Platform(EP250) is equipped with single CPU only.
>
Yes.  Raid requires some processing by the cpu (the higher the 
raidlevel the more processing typically)  In raid 0 the only 
processing done is the splitting of data into stripes.  In raid 5 it 
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dhansen | 30 Dec 03:05 2004
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solaris q

 Well, first off the /usr/local/* path is not part of the
Solaris system. It's used conventionally as a place for you
to install 3rd party applications and/or your own personal
apps and such and be able to keep them from intermingling
with the actual/original Solaris setup. (Good for sane
backups, etc...)

 At any rate, the include directory tends to be a place 
where header files are stored. Which fits well with your
file unix.h (the .h extension denotes that the file is a 
header file). This is pretty much the long way of telling
you that this header file came from some other application
that you, or someone with appropriate access, installed on
the system and isn't part of the Solaris operating system.
As for what it does, that would depend on what is inside
of it. But header files contain declarations of functions
that can be used by programs that are aware of the header
file.

  Have you verified that this file is present on the other
solaris machines that you say you aren't getting errors 
from? Also, it's always a good habit to include any error
messages that you are referring to. Helps increase your
chances of finding a solution to your problem.

david

> Im not so familiar with the intricacies of solaris files but does anyone
> know what the file "unix.h" under /usr/local/include does? It has been
> breaking lately some of my software installations on the solaris box, but
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dhansen | 30 Dec 03:05 2004
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We Won!

> Will the manufacturers (developers?) ever learn?
> I hope someday they would.
> The raison d'etre of the mailing lists is the unsatisfactory support
> provided and the eagerness of the users o learn and explore and SHARE.

 I would have to disagree with your first point. I, for one,
have always been very satisfied with the support that I've 
received from Sun. Sun is one of the few companies where 
I've been easily available to support that went beyond the 
scope of what I was entitled to (2nd place would have to be 
HP) and I rarely have to suffer through with wrong answers 
or  being bluffed into trying guesswork. 

 Don't read this wrong...I don't agree with this lawyers
actions in any way. Especially when going after a site that
so obviously is devoted to nothing but supporting Sun, their
products, and fostering a positive community amongst their
customers and, hopefully, future customers. I am very 
glad that everything turned out in a positive light (and
glad to see a little bit of blue back on the page :). 

 I find this mailing list, the website and pretty much all of
Bill's work to be invaluable to me, and the community as a
whole, to be able to provide something that Sun cannot. In
this type of community you can find answers to more
heterogeneous questions. Situations where all of the 
products involved are not Sun hardware or Sun Software and
you couldn't expect Sun tech-support to be experts on 
every piece of software, hardware and combination thereof
but you could hope to find someone else out in the "real
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dhansen | 30 Dec 03:07 2004
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Advantages of separate partitions

 First off, asking a question is cool... but asking for a
debate is a bit rude.
 If you don't see any value in multiple partitions then 
don't use them. No one can be forced to plan for the future
of a system and no single method will every be the perfect
solution to every conceivable implementation. While multiple
filesystems make sense and are beneficial, there are times
when a single filesystem is more appropriate.

Some points in favor of multiple filesystems:

  1m) prevent a user from choking your system by using up
	all available disk space and thereby causing your
        machine to crash.
  2m) prevent log files from doing what a luser in #1 could
	do to your system.
  3m) future upgrades/scalability
     3mA) #3 can be done without even halting the system in
	hot-swappable type disk environments or systems
        where not all of the drives are currently in use.
  4m) easier to make sane backups 

Some points in favor of a single filesystem:

  1s) workstations that will never have significant growth
      1sA) no thought or planning required in layout
      1sB) no cursing when you realize that all that wasted
             space in /var could go to increasing /usr/local
             once you find out that you could be playing
             Quake if only you had a wee bit more space to
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dhansen | 30 Dec 03:08 2004
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X PROBLEMS

> I always, work with dtlogin disabled. And when I want to run Xsun. I
> type:
> /usr/dt/bin/dtconfig -e
> And reboot.
> Please when I am with dtlogin dsiabled, how can I run Xsun, pleasE????

 try /usr/openwin/bin/openwin

from the Xsun manpage:
DESCRIPTION
     Xsun is the Solaris server for Version 11 of  the  X  window
     system  on  Solaris  hardware.   It  is  normally started by
     xinit(1) via openwin(1).

If Xsun is not in your $MANPATH variable, then try man -M /usr/openwin/share/man Xsun

david

dhansen | 30 Dec 03:09 2004
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Hard Drive Duplicator

> Does anyone know of any sources for hard drive duplicators for Sun
> systems??

something other than dd and installboot?

david

dhansen | 30 Dec 03:09 2004
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Hard Drive Duplicator

> aside from those disksuite products, which i have never used , 
> dd and installboot really duplicates your hard disk.. including bad sectors :)
> -Ana

  The bad sector map would depend on the hardware in question
and this is not a problem with most drives (as this information is hidden 
from the software (OS)). 
 As for disksuite, I could be wrong but wouldn't the only thing closest 
in that package be the mirroring utility (which would be too much 
overhead for doing a typical disk cloning job)?

 I suppose what should have been asked of the original poster was for more
information on what he is wanting since one tool is rarely best for all jobs.

david

dhansen | 30 Dec 03:12 2004
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compiler error

> I am trying to install qmail on solaris 8 ,butam not able to compile ,I

> /usr/ucb/cc: language optional software package not installed
> 

 Solaris does not ship the cc compiler. That error message really 
should read something more like:
/usr/ucb/cc: optional (programming) language software package not installed
    ( _or_ just drop the word "language" from the current error msg )
so that new users can understand it more (although it is covered in the FAQ).
I haven't installed Solaris 8 yet, myself, but it's my understanding that it
shipped with the gcc compiler. If you installed that, then perhaps you need to
change your PATH to put the /usr/ucb directory somewhere after the directory
that you installed gcc into.

david

Rtjepps | 30 Dec 03:58 2004
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how to add a path in the UNIX PATH

Souleymane,
  In order to run gcc and gzip you need to edit you .cshrc file and where it says "set path =" add in
usr/local/bin, it should already have entries for /bin, /usr/bin and so on you can't miss it.  If you're
running a Korn shell you'll probably have to edit you .profile file.  Or you can do neither and just give the
full pathname everytime you want to use these programs.  

Ron

Rtjepps | 30 Dec 04:00 2004
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Solaris versions

Try uname -a


Gmane