HOWTO: Multi Disk System Tuning: Further Information
12. Further InformationThere is wealth of information one should go through when setting up a
major system, for instance for a news or general Internet service provider. The FAQs in the following groups are useful:12.1 News groupsSome of the most interesting news groups are:Storage.PC storage.AFS.SCSI.Linux setup.Most newsgroups have their own FAQ that are designed to answer most of your
questions, as the name Frequently Asked Questions indicate. Fresh versions
should be posted regularly to the relevant newsgroups. If you cannot find it
in your news spool you could go directly to the
FAQ main archive FTP site. The WWW versions can be browsed at
FAQ main archive WWW site.Some FAQs have their own home site, of particular interest here areSCSI FAQ andcomp.arch.storage FAQ.12.2 Mailing listsThese are low noise channels mainly for developers. Think
twice before asking questions there as noise delays the development.
Some relevant lists are linux-raid, linux-scsi and linux-ext2fs.
Many of the most useful mailing lists run on the vger.rutgers.edu server
but this is notoriously overloaded, so try to find a mirror. There are some lists mirrored at
The Redhat Home Page.
Many lists are also accessible at
linuxhq,
and the rest of the web site is a gold mine of useful information.If you want to find out more about the lists available you can send a message
with the line lists to the
list server at vger.rutgers.edu.
If you need help on how to use the mail server just send the line help
to the same address.
Due to the popularity of this server it is likely it takes a bit to time before
you get a reply or even get messages after you send a subscribe command.There is also a number of other majordomo list servers that can be of interest
such as the
EATA driver list
and the
Intelligent IO list.Mailing lists are in a state of flux but you can find links to a number of
interesting lists from the
Linux Documentation Homepage.12.3 HOWTOThese are intended as the primary starting points to
get the background information as well as show you how to solve
a specific problem.
Some relevant HOWTOs are Bootdisk, Installation, SCSI and UMSDOS.
The main site for these is the
LDP archive
at Sunsite.There is a a new HOWTO out that deals with setting up a
DPT RAID system, check out the
DPT RAID HOWTO homepage.12.4 Mini-HOWTOThese are the smaller free text relatives to the HOWTOs.
Some relevant mini-HOWTOs are
Backup-With-MSDOS, Diskless, LILO,
Linux+DOS+Win95+OS2, Linux+OS2+DOS, Linux+Win95,
NFS-Root, Win95+Win+Linux, ZIP Drive .
You can find these at the same place as the HOWTOs, usually in a sub directory
called mini. Note that these are scheduled to be converted into SGML and
become proper HOWTOs in the near future.The old Linux Large IDE mini-HOWTO is no longer valid, instead read
/usr/src/linux/drivers/block/README.ide or
/usr/src/linux/Documentation/ide.txt.12.5 Local resourcesIn most distributions of Linux there is already a document directory already,
have a look in the
document archive
where most packages store their main documentation and README files etc.
Also you will here find the
HOWTO archive
of ready formatted HOWTOs
and also the
mini-HOWTO archive
of plain text documents.Many of the configuration files mentioned earlier can be found in the
etc
directory. In particular you will want to work with the
fstab
file that sets up the mounting of partitions
and possibly also
mdtab
file that is used for the md system to set up RAID.The kernel source
is, of course, the ultimate documentation. In other
words, use the source, Luke.
It should also be pointed out that the kernel comes not only with
source code which is even commented (well, partially at least)
but also an informative
documentation directory.
If you are about to ask any questions about the kernel you should
read this first, it will save you and many others a lot of time
and possibly embarrassment.Also have a look in your
system log file
to see what is going on and in particular how the booting went if
too much scrolled off your screen. Using tail -f /var/log/messages
in a separate window or screen will give you a continuous update of what is
going on in your system.You can also take advantage of the /proc
file system that is a window into the inner workings of your system.
Use cat rather than more to view the files as they are reported as being zero length.Much of the work here is based on the Filesystem Structure Standard (FSSTND).
It has changed name to File Hierarchy Standard (FHS) and is less Linux specific.
The maintainer has set up a
home page
which tells you how to join the currently private mailing list, where the development
takes place.12.6 Web pagesThere is a huge number of informative web pages out there and by their very
nature they change quickly so don't be too surprised if these links become
quickly outdated.A good starting point is of course the Sunsite
LDP archive
that is a information central for documentation, project pages and much, much more.Mike Neuffer, the author of the DPT caching RAID controller drivers, has some
interesting pages on
SCSI
and
DPT.Software RAID 1 development information can be found at
RAID 1 development page.Disk related information on benchmarking, RAID, reliability and
much, much more can be found at
Linas Vepstas
project page.There is also information available on how to
RAID the root partition
and what software packages are needed to achieve this.In depth documentation on
ext2fs
is also available.Mark D. Roth has information on
VPSA similar kind of project on an
Enhanced File SystemPeople who are awaiting support for VFAT32 and Joliet
could have a look at the
development page for a preview.
These drivers are now entering the 2.1.x kernel development series.There is an ongoing compression project that integrates in ext2fs
and is called e2compr. For more information check out the
e2compr homepage.For more information on booting and also some BSD information
have a look at
booting information
page.For diagrams and information on all sorts of disk drives, controllers etc. both
for current and discontinued lines
The Ref
is the site you need. There is a lot of useful information here, a real treasure trove.
You can also download the database using
FTP.Please let me know if you have any other leads that can be of interest.12.7 Search enginesRemember you can also use the web search engines and that some, likeAltavistaExciteHotbotcan also search usenet news.Also remember that
Dejanews
is a dedicated news searcher that keeps a news spool from early 1995 and onwards.If you have to ask for help you are most likely to get help in the comp.os.linux.setup
news group. Due to large workload and a slow network connection I am not able to follow that
newsgroup so if you want to contact me you have to do so by e-mail.
t
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