Re: Old RAID HOWTO query?
[ Monday, March 13, 2000 ] Gregory Leblanc wrote: What version of the RAIDtools and kernel drivers does the old Software-RAID-HOWTO apply to? I need to make sure I've got it right. The coded checks were 0.90, but the latest to ever show up was 0.50beta3 (kernel.org/pub/linux/daemons/raid/) James
Old RAID HOWTO query?
What version of the RAIDtools and kernel drivers does the old Software-RAID-HOWTO apply to? I need to make sure I've got it right. Thanks, Greg
Re: raid howto
[ Tuesday, October 26, 1999 ] Jakob Østergaard wrote: Another solution is that raidtools, when old md support is detected, issue a clear-like-water message like: [snip] While the newbies should be able to find the docs easily, we don't want experienced users having to scroll thru four screens of pointers to docs etc. before they can do what they know well how to do. I don't see how this would be a problem, since the suggested case is a newer raidtools and older md support (newbie forgot to patch his kernel) Do experienced users honestly use raidtools 0.9 and md support 0.5? I didn't think that was even possible. If it is impossible, then the clarification message just helps explain the "/dev/md0: Aborted" fatal error they're going to get anyway :) Perhaps even some #ifdef's on LINUX_KERNEL_VERSION to say "Patch your kernel from kernel.org/pub/linux/daemons/raid/alpha" for 2.2.x or "Sorry, kernel 2.3 currently has no support for newer raid" for 2.3.x (hopefully 2.3.x 2.3.24? :) Did I miss something? James -- Miscellaneous Engineer --- IBM Netfinity Performance Development
Re: raid howto
I think one of the biggest problems with the howto, is that there are two versions of it. Places like linuxdoc.org and linux.com and metalab.unc.edu all have have the old version last updated in 98 I guess this is partly a necessity due to current duality in raid versions in use. A lot of people probably read the old software raid HOWTO and dont realise it was targeted at the old version of raid, not the v0.9 stuff. Has anyone aproached linuxdoc.org (i think they a supposed to be the offical place for howto's?) to try and get them to add the new software raid howto ? They could carry both and refer to them via the verison numbers, or even as the old-software-raid -howto and the new-software-raid-howto. It would be even better if each of the HOWTO refered to the existance of the other What do you all think, should someone (i could do it if you want) lobby a few sites and try and get the new howto onto a few sites. I think Software RAID is one of the most powerfull yet underutilised features of linux. Maybe one day we will get 0.9 in the kernel, have lilo supporting all raid modes, one version of the HOWTO, and all linux users will be root RAIDing on the default installation. Well, anyway, i tend to ramble on a bit, antone agree with me about the docs? Glenn McGrath
RE: raid howto
Hi All, My apologies in advance as a new subscriber. -Original Message- From: [EMAIL PROTECTED] Sent: Monday, October 25, 1999 10:40 AM I wasn't aware of that Software RAID howto version.. the only one I knew of was: http://linas.org/linux/Software-RAID/Software-RAID.html I've read through both and in reference to the list archive reference, Linux-RAID mailing list archive: http://www.linuxhq.com/lnxlists/. This link has no archive for this list. Is there a searchable archive somewhere that I can look through before I ask unnecessary questions? Thank you, Wilson Hein [EMAIL PROTECTED]
Re: raid howto
On Fri, Oct 22, 1999 at 08:12:30AM +0200, Jakob Østergaard wrote: Perhaps we could add a ``read the howto at http://ostenfeld.dk/~jakob/Software-RAID.HOWTO'' to the bottom of all mails on this list ? AFAIR the linux-smp list does that (with the SMP FAQ). Could the list maintainer give an oppinion on this ? i asked dor the same thing some months ago: !answer L. -- Luca Berra -- [EMAIL PROTECTED] Communications Media Services S.r.l.
raid howto
Is there any chance of getting the software raid and/or root raid howto updated for whatever the current features of the MD device driver is? I'm thinking of using raid1 on a bootable drive (/, /usr, /var, /home partitions) and the documents mention some pitfalls, which may have been fixed in the MD driver but not documented in the HOWTO Any help is appreciated, -Cygnus .-._.-._.-._.-._.-._.-._.-._.-._.-._.-._.-._.-._.-._.-._.-._.-._.-._.-. Anthony J. Biacco Network Administrator/Engineer [EMAIL PROTECTED]Intergrafix Internet Services "Dream as if you'll live forever, live as if you'll die today" http://cygnus.ncohafmuta.comhttp://www.intergrafix.net .-._.-._.-._.-._.-._.-._.-._.-._.-._.-._.-._.-._.-._.-._.-._.-._.-._.-.
Re: raid howto
On Thu, Oct 21, 1999 at 04:09:14PM -0400, Admin Mailing Lists wrote:
Is there any chance of getting the software raid and/or root raid howto
updated for whatever the current features of the MD device driver is?
I'm thinking of using raid1 on a bootable drive (/, /usr, /var, /home
partitions) and the documents mention some pitfalls, which may have been
fixed in the MD driver but not documented in the HOWTO
Perhaps we could add a
``read the howto at http://ostenfeld.dk/~jakob/Software-RAID.HOWTO''
to the bottom of all mails on this list ? AFAIR the linux-smp list
does that (with the SMP FAQ).
Could the list maintainer give an oppinion on this ?
Thanks,
: [EMAIL PROTECTED] : And I see the elder races, :
:.: putrid forms of man:
: Jakob Østergaard : See him rise and claim the earth, :
:OZ9ABN : his downfall is at hand. :
:.:{Konkhra}...:
RAID HOWTO Update
Hi all!
The Software-RAID.HOWTO has been updated a lot since last. Special
thanks go to Allan Noah and Yasunori Taniike for their many corrections
and suggestions.
The HOWTO is now written in SGML, so both HTML and Text versions are
available. The URL is http://ostenfeld.dk/~jakob/Software-RAID.HOWTO/
The HOWTO is still pretty much a draft. I appreciate all comments, suggestions,
corrections etc.
There will probably be a section with actual performance numbers in short
time. If any of you have the time, please send me bonnie + hdparm -t results
along with a description of your setup (hardware etc.).
Ingo: I suggest you just download the text version for inclusion with
the raidtools, when you release new versions. I'll try to keep in pace
with your releases.
: [EMAIL PROTECTED] : And I see the elder races, :
:.: putrid forms of man:
: Jakob Østergaard : See him rise and claim the earth, :
:OZ9ABN : his downfall is at hand. :
:.:{Konkhra}...:
RAID HOWTO
Hi all !
I've collected some more information regarding RAID setup etc.
and put it all in one larger HOWTO.
This documentation is NOT finished yet, but I would like to
hear comments on it allready. Consider it a draft. Those of
you who have set up RAID systems, if you have the time, could
you please take a look at http://ostenfeld.dk/~jakob/RAID.HOWTO,
and send me corrections and additions as you see fit.
This documentation will probably be included in the raidtools
package as soon as we get the worst errors ironed out.
I only run RAID on very few systems, so I do need your assistance
in documenting this. Also, I'm not an english native, so feel
free to send me spelling corrections as well :)
Benchmarks, exotic setups etc. are ofcourse also welcome.
Thank you very much,
: [EMAIL PROTECTED] : And I see the elder races, :
:.: putrid forms of man:
: Jakob Østergaard : See him rise and claim the earth, :
:OZ9ABN : his downfall is at hand. :
:.:{Konkhra}...:
raid howto for Rh 5.x (long)
we have rh 4.2 5.0 and 5.1 running various versions of raid code. the 1005 was the easiest by far. sorry if this seems rudimentary, but there are lurkers here who can use all of this. Ultra-quick start Raid (too quick) Howto: 1. rm -rf /usr/src/linux cause we want clean sources. redhat rpms are not clean, as they contain patches already. 2. cd /usr/src; tar xzf linux-2.0.35.tgz get the .35 kern src at sunsite.unc.edu etc. 3. gunzip raid0145-19981110-2.0-.gz get latest nov. release (i think this finally compiles) 4. patch -p0 raid0145-1998xxx 5. cd linux; make menuconfigput in the stuff you need. raid non-module for autostart. 6. make zImage or bzImage if you need :) 7. make modules; make modules_install 8. tar xzf raidtools.tgz (get this from linux.kernel.org/pub/linux/daemons/raid/alpha too) 9. configure and make raidtools. (must have patched kernel and done a make first) 10. make install of raidtools. 11. setup new kernel as label linux in your /etc/lilo.conf make old kernel "linux.old" (we do this cause redhats rc scripts use lilo to determine which modules dir to depmod -a, and when we boot from floppy we will call linux, so there must be a "linux" in the mbr with exactly the same ) 12. run lilo to write the bootloader's map, etc. 13. use fdisk to change partition type on each raid piece to fd 14. reboot with new kernel. (we have not made raid disks yet, so kernel will complain about bad superblocks, if so, we are almost there. one time complaining is good :-) 15. setup /etc/raidtab (there is example with raidtools) 16. run mkraid /dev/md0 thru mdx. (i do them individually rather than with -a so i can watch outputs.) 17. raidstart /dev/md0 thru mdx 18. mke2fs (or other fs) /dev/md0 thru mdx 19. edit /etc/fstab to reflect mount points (make sure mount points actually exist) 20. mount /raid1 or what ever. (if this not work error messages are useful) 21. reboot. 22. all raid1 and up should restart. raid 0 and linear require persistent superblocks (/etc/raidtab setting during mkraid) 23. if you want to make root raid, edit /etc/fstab to say that your root partition is /dev/mdx then copy info over to raid partition (see harddrive upgrade howto) be careful here and dont copy /raid to /raid or you will enter a loop that fills the drive. also dont copy /proc, just make the dir in /raid/ 24. mkbootdisk (this creates boot floppy with lilo this is why we need to install new kernel as "linux" in lilo, cause of redhat boot scripts, and why we edited the fstab, cause that is how mkbootdisk knows what to drev the root device to.) 25. put / back to your current root in /etc/fstab (this gives us a failover IMPORTANT!) 26. boot from floppy. (raid root should start, if not, take out floppy and reboot with linux.old from the HD) 27. you still have to boot from floppy, though there are a couple alternatives. 27.1 patch lilo to understand your root raid1 device. i have not done this but seen it. 27.2 still use floppy. i do this, not a big deal. 27.3 use a boot rom on network card to get kernel into ram from another machine. (seems silly, point of raid is fault tolerance, but we have to boot from ANOTHER computer!) 27.4 the current solution i am working on is a bootrom on a homemade card that hooks int18h (like rombasic used to do) and loads the kernel off of a secondary flashrom into ram high (like bzImages) need the secondary rom cause the largest bios-scanned space is 128k, and i cant make a 128 k kernel :-) hope this helps those of you using redhat. allan noah sysad pfeiffer univ. www.pfeiffer.edu
ROOT RAID HOWTO
Someone wrote me a note about bench marks etc after reading my Root Raid Howto I have managed to misplace the e-mail message... Drop me a note if you get this message. [EMAIL PROTECTED] [EMAIL PROTECTED]
