SOFTRAID
I'm using Suse Linux 6.4. I want to install a raid1 on /dev/hda4 and /dev/hdb2. The /etc/raidtab is OK. Now I want to excecute mkraid /dev/md0 The answer is: Handling MD Device /dev/md0 analyzing super-block disk0: .. disk1: .. Mkraid aborted, the the syslog or /proc/mdstat for potential clues. The Problem is now, that nothing happend in /proc/mdstat and in my syslog. Can you help me ??? Bernd Giese M.M. WARBURG INVEST KAPITALANLAGEGESELLSCHAFT mbH Liebigstr.6 60323 Frankfurt Tel. +49 (0)69 17097-203 Fax +49 (0)69 17097-303 e-mail: [EMAIL PROTECTED]
Re: SOFTRAID
Mkraid aborted, the the syslog or /proc/mdstat for potential clues. I had this promlem because of unpatched kernel.
LILO for RAID1
Hello all, what is the correct root/boot LILO config option for RAID1? (root fs on raid) Seems boot=/dev/md0 and root=/dev/md0 OK, but LILO can't boot only when I issue manually the 'kernel root=/dev/md0'
Re: LILO for RAID1
what is the correct root/boot LILO config option for RAID1? (root fs on raid) Seems boot=/dev/md0 and root=/dev/md0 OK, but LILO can't boot only when I issue manually the 'kernel root=/dev/md0' Hi, try linear # cat /etc/lilo.conf [...] linear [...] Octave Amicalement, oCtAvE "Internet ? Welcome in the slave economy."
Re: LILO for RAID1
set boot to a real bootable device (like /dev/sda) and root to the md device. -ilia "Gabor Z. Papp" wrote: Hello all, what is the correct root/boot LILO config option for RAID1? (root fs on raid) Seems boot=/dev/md0 and root=/dev/md0 OK, but LILO can't boot only when I issue manually the 'kernel root=/dev/md0' -- -+-- Ilia Baldine | [EMAIL PROTECTED] Network Research Engineer, | ph#:(919)248-1847 Advanced Networking Research, MCNC | FAX:(919)248-1455 -+-- "I used to think the brain was the most important part of the body, but then I realized who was telling me that." -Emo Philips
raid-0.90 and 2.2.16
Hello, Does anyone have a patch that will patch properly for 2.2.16? I've looked on kernel.org/pub/linux/daemons/raid/alpha but found only 2.2.12 patches and nothing later. Thank you. -reid
Re: raid-0.90 and 2.2.16
I used Ingo's patch from http://people.redhat.com/mingo/raid-patches/raid-2.2.16-A0 and it built without issue. There is also a 2.2.17 patch that applies cleanly against the Alan Cox's 2.2.17pre13 code for me. -Nic Benders On Wed, 26 Jul 2000, Reid Sutherland wrote: Does anyone have a patch that will patch properly for 2.2.16? I've looked on kernel.org/pub/linux/daemons/raid/alpha but found only 2.2.12 patches and nothing later.
raid and 2.4 kernels
do the kernel developers responsible for RAID read this list? I would be interested in seeing some constructive discussion about the reports of degraded RAID performance in the 2.4 kernels. It is particularly disappointing given that SMP appears to be a lot better in 2.4 vs 2.2 -- ai http://sefiroth.org
OT: Kernel Management
Title: OT: Kernel Management I've been wanting to mess around with the latest 2.4 kernels and RAID, but one thing that I just don't understand/know about the whole compiling the kernel is this: How do you manage the System.map file that resides in /boot on RedHat systems? I have no problems configuring/compiling/installing otherwise. Anyone have a good technique they use when they get to the point where its time to copy /usr/src/linux/arch/i386/boot/bzImage /boot/vmlinux-versionnumber and copy /usr/src/linux/System.map /boot and edit lilo.conf??? I am curious, and I know that people on this list must be doing it alot :-) Thanks in advance, --b A product's only late once, but it can suck forever. -- Ben Spees, Ambrosia Software Bryan D. Batchelder Palm Wireless/Internet Application Developer W: 813.935.7100 W: 813-936-8844 x 423 (after 5:30PM EST) H: 727-547-1322 M: 727-808-4296 ConnectWise, Inc. (www.ConnectWise.com) 2803 West Busch Blvd, Suite 204 Tampa, FL 33618
Re: OT: Kernel Management
I am sure each individual has their own style for rolling kernels, but on redhat systems my preference is after running "make config", edit the Makefile. I tweekt the "EXTRAVERSION" variable towards the top so I can have multiple kernels/module versions of the same revision (ex 2.2.16-1 2.2.16-2 2.2.16-RAID). Then for the install process run "make install" instead of make bzImage. This does a nice job of copying the kernel and System map, then linking it nicely in the /boot directory. The foundation behind this is the /sbin/installkernel script on your box. Debian has a nice way where it is very easy to compile the kernel into a debian package, which can then be installed like any other deb package. donfede On Wed, 26 Jul 2000, Bryan Batchelder wrote: I've been wanting to mess around with the latest 2.4 kernels and RAID, but one thing that I just don't understand/know about the whole compiling the kernel is this: How do you manage the System.map file that resides in /boot on RedHat systems? I have no problems configuring/compiling/installing otherwise. Anyone have a good technique they use when they get to the point where its time to copy /usr/src/linux/arch/i386/boot/bzImage /boot/vmlinux-versionnumber and copy /usr/src/linux/System.map /boot and edit lilo.conf??? I am curious, and I know that people on this list must be doing it alot :-) Thanks in advance, --b "A product's only late once, but it can suck forever." -- Ben Spees, Ambrosia Software Bryan D. Batchelder Palm Wireless/Internet Application Developer W: 813.935.7100 W: 813-936-8844 x 423 (after 5:30PM EST) H: 727-547-1322 M: 727-808-4296 ConnectWise, Inc. (www.ConnectWise.com) 2803 West Busch Blvd, Suite 204 Tampa, FL 33618
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Re: raid and 2.4 kernels
On Wed, 26 Jul 2000, Anton wrote:
do the kernel developers responsible for RAID read this list? I would be
interested in seeing some constructive discussion about the reports of
degraded RAID performance in the 2.4 kernels. It is particularly
disappointing given that SMP appears to be a lot better in 2.4 vs 2.2
2.4 is having VM problems, therefore especially write performance can be
poor. This is not directly RAID related, although maybe RAID will amplify
the problem.
There's a lot of work going on in trying to make the VM perform more reasonably,
and I'm confident that RAID performance will be absolutely *smoking* once those
other issues are sorted out.
The block I/O layer has seen some optimizations and especially the buffer/cache
merger should improve throughput significantly (especially on low memory-bandwidth
machines).
--
: [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}...:
Re: OT: Kernel Management
On Wed, 26 Jul 2000, Bryan Batchelder wrote:
I've been wanting to mess around with the latest 2.4 kernels and RAID, but
one thing that I just don't understand/know about the whole compiling the
kernel is this: How do you manage the System.map file that resides in
/boot on RedHat systems?
I have no problems configuring/compiling/installing otherwise.
Anyone have a good technique they use when they get to the point where its
time to copy /usr/src/linux/arch/i386/boot/bzImage
/boot/vmlinux-versionnumber and copy /usr/src/linux/System.map /boot and
edit lilo.conf???
I am curious, and I know that people on this list must be doing it alot :-)
make dep make clean make install modules make modules_install
Builds the kernel, copies the files, runs lilo.
--
: [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 developers question
Dear Raiders, I installed a 2.2.16 kernel over my Suse 6.3 (2.2.13) and patched them with raid-2.2.16-A0.txt. Installation of the raidtools-19990824-0.90.tar.gz , which is by the way the same as raidtools-dangerous-0.90-2116.tar.gz (I checked, but maybe not good enough), was a piece of cake. The raid 1 and rain5 is working. After pulling out one disk (system off line), it came back on line with the data intact... It started automatically the reconfiguration using the spare disk. The funny thing was, after reinserting the original disk it did not reconfigure it automatially. I had to raidhotadd the disk. Then it started reconfiguring it. Now I have an old (5years) scsi2 disk array and each disk has 3 leds. Two of them can be controled by the raid controller (on-line and disk-fail). I would like to be able to stop my raid array and switch off the power of this box (not the computer). If I switch the array off and on, the scsi disks do not spindle up. So I have to reboot the machine (scsi card spindles them up). This is a bit awkward. I have a few questions: Can the raid-software also control the above mentioned leds? What is translucent mode? Which drive is my hotspare if I issue `cat /proc/mdstat` ? Is it possible to modify the raidstart/stop code so that it uses scsi commands to start/stop the disks (in a running machine)? Many thanks, Nick
Re: LILO for RAID1
Take a look at http://metalab.unc.edu/mdw/HOWTO/Software-RAID-HOWTO-4.html#ss4.11 There is a patched version of LILO wich accept boot=/dev/md0 in lilo.conf and will make each disk in the mirror bootable. Ilia Baldine a écrit : set boot to a real bootable device (like /dev/sda) and root to the md device. -ilia "Gabor Z. Papp" wrote: Hello all, what is the correct root/boot LILO config option for RAID1? (root fs on raid) Seems boot=/dev/md0 and root=/dev/md0 OK, but LILO can't boot only when I issue manually the 'kernel root=/dev/md0' -- -+-- Ilia Baldine | [EMAIL PROTECTED] Network Research Engineer, | ph#:(919)248-1847 Advanced Networking Research, MCNC | FAX:(919)248-1455 -+-- "I used to think the brain was the most important part of the body, but then I realized who was telling me that." -Emo Philips
Re: raid and 2.4 kernels
On Wednesday July 26, [EMAIL PROTECTED] wrote: do the kernel developers responsible for RAID read this list? I would be interested in seeing some constructive discussion about the reports of degraded RAID performance in the 2.4 kernels. It is particularly disappointing given that SMP appears to be a lot better in 2.4 vs 2.2 As Jakob mentioned, the slow down is quite possibly related to other parts of the kernel. I would really like to see speed comparisons for 2.2 no raid 2.2 raid 2.4 no raid 2.4 raid where 2.3+raid didn't fit the pattern, before I looked too deeply. Given the code at the moment, I am highly confident that linear, raid0 and raid1 should be just as fast in 2.4 as in 2.2. There are some issues with raid5 that I am looking into. I don't know that they affect speed much, though they might. NeilBrown
RE: raid and 2.4 kernels
-Original Message- From: Neil Brown [mailto:[EMAIL PROTECTED]] Sent: Wednesday, July 26, 2000 7:41 PM To: Anton Cc: [EMAIL PROTECTED] Subject: Re: raid and 2.4 kernels On Wednesday July 26, [EMAIL PROTECTED] wrote: do the kernel developers responsible for RAID read this list? I would be interested in seeing some constructive discussion about the reports of degraded RAID performance in the 2.4 kernels. It is particularly disappointing given that SMP appears to be a lot better in 2.4 vs 2.2 As Jakob mentioned, the slow down is quite possibly related to other parts of the kernel. I would really like to see speed comparisons for 2.2 no raid 2.2 raid 2.4 no raid 2.4 raid where 2.3+raid didn't fit the pattern, before I looked too deeply. Given the code at the moment, I am highly confident that linear, raid0 and raid1 should be just as fast in 2.4 as in 2.2. There are some issues with raid5 that I am looking into. I don't know that they affect speed much, though they might. Could you be a little more specific? Speed comparisons on disk access? Then you can't compare RAID with no RAID effectively. You could compare the speed of 2.2/2.4 RAID, and 2.2/2.4 no RAID, but comparisons across would seem to be meaningless. Later, Grego
Detaching mirrors with raidtools 0.9
G'day Folks, My apologies if this is RTFM or previously discussed on list (I have just joined). We have implemenetd mirroring using raidtools 0.9 on RedHat 6.2. It is working well, but we would like the ability to do the following to backup a Lotus Domino server: 1. Shutdown Domino server 2. detach one half of mirror (preferably without using raidstop or unmounting the device containing Domino). 3. Restart Domino immediately (running on "live" half of mirror) 4. Back up Notes partition from detached mirror 5. Re-attach detached mirror (again without using raidstop or umount). Is there any way to do this with raidtools 0.9? If not, are there any plans to implement the ability to detach/attach mirror devices on the fly (ala Sun's Disksuite).? TIA, Tom -- Tom Regan, Operations Manager Email: [EMAIL PROTECTED] NSW AgriculturePhone: 0263 913268 Orange NSW Australia Fax: 0263 913290
