Hi,
Which SATA RAID cards work natively on Centos 4.x??
I have heard that the only one supported is the 3ware cards but not sure if that requires a driver to be added or if it just works out the box.. Also would like to know of alternatives..
Thanks..
Read: http://linuxmafia.com/faq/Hardware/sata.html
On Fri, 16 Jun 2006, WipeOut wrote:
Hi,
Which SATA RAID cards work natively on Centos 4.x??
I have heard that the only one supported is the 3ware cards but not sure if that requires a driver to be added or if it just works out the box.. Also would like to know of alternatives..
Thanks.. _______________________________________________ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Looks like my question was answered in June.
Disregard last post.
Thanks for the link Justin.
-----Original Message----- From: centos-bounces@centos.org [mailto:centos-bounces@centos.org] On Behalf Of Justin Piszcz Sent: Friday, June 16, 2006 4:29 AM To: CentOS mailing list Subject: Re: [CentOS] SATA RAID Cards
Read: http://linuxmafia.com/faq/Hardware/sata.html
On Fri, 16 Jun 2006, WipeOut wrote:
Hi,
Which SATA RAID cards work natively on Centos 4.x??
I have heard that the only one supported is the 3ware cards but not sure
if
that requires a driver to be added or if it just works out the box.. Also would like to know of alternatives..
Thanks.. _______________________________________________ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
_______________________________________________ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
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WipeOut wrote:
Hi,
Which SATA RAID cards work natively on Centos 4.x??
I have heard that the only one supported is the 3ware cards but not sure if that requires a driver to be added or if it just works out the box.. Also would like to know of alternatives..
3ware is supported out of the box, 3ware drivers are part of the mainline kernel.
Areca is another alternative which you can find about from the thread Raid cards.
From the benchmarks, Areca is much higher performance if you search the
web. Although I've not confirmed that.
On Fri, 16 Jun 2006, Feizhou wrote:
WipeOut wrote:
Hi,
Which SATA RAID cards work natively on Centos 4.x??
I have heard that the only one supported is the 3ware cards but not sure if that requires a driver to be added or if it just works out the box.. Also would like to know of alternatives..
3ware is supported out of the box, 3ware drivers are part of the mainline kernel.
Areca is another alternative which you can find about from the thread Raid cards. _______________________________________________ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Top posting is evil.
On 6/16/06, Justin Piszcz jpiszcz@lucidpixels.com wrote:
From the benchmarks, Areca is much higher performance if you search the
web. Although I've not confirmed that.
Areca does have better speed numbers, but they get them by not being as excruciatingly careful with your data. Not to say they don't have a good product, but the speed comes from somewhere.
WipeOut wrote:
Which SATA RAID cards work natively on Centos 4.x??
I have heard that the only one supported is the 3ware cards but not sure if that requires a driver to be added or if it just works out the box.. Also would like to know of alternatives..
I am running a 3ware 9500S-12 card in our backup-to-disk server, and while it does work out of the box with CentOS4 the driver complains of strange errors. I have chosen to use the official downloaded driver package from the 3ware website; the resulting .ko is much larger in size, so I assume there's a lot more goodies in there. (mini HowTo below)
The throughput numbers aren't the best (I'm running two RAID5 hardware configs, one of 6x 250gig, one of 6x 400gig) but the tools 3ware provides are top notch! There's a commandline tool tw_cli that allows full control of the card (including battery backup) and they even have a webUI tool that is very, very nice. Free downloads, and you can even upgrade your firmware from the cmdline in CentOS.
I couldn't be happier with the product, I don't need insane write speed for this machine.
-te
===
[My mini howto, more of notes-to-self]
A kernel upgrade requires recompiling the module for the new kernel and making a new initrd file.
Example: new kernel version 2.6.9-34ELsmp
1) backup RPM module: cd /usr/src/ mkdir 2.6.9-34ELsmp cp -a /lib/modules/2.6.9-34ELsmp/kernel/drivers/scsi/3w-9xxx.ko 2.6.9-34ELsmp/
2) change dev link so new compile uses the new kernel, while still running the old kernel (see 3ware Makefile): cd /usr/src/ rm -f linux ln -s /lib/modules/2.6.9-34ELsmp/source linux
3) compile new module cd /usr/src/3ware/<version> (i.e. /2.26.04.007/) make clean make chmod 0755 3w-9xxx.ko
4) copy new module over stock RPM one and depmod cp -a 3w-9xxx.ko /lib/modules/2.6.9-34ELsmp/kernel/drivers/scsi/3w-9xxx.ko depmod -a 2.6.9-34ELsmp
5) backup original initrd, make new one with new module cd /boot/ cp -a initrd-2.6.9-34ELsmp.img initrd-2.6.9-34ELsmp.img.orig mkinitrd initrd-2.6.9-34ELsmp.img.new 2.6.9-34ELsmp (ls -l to see that new initrd is slightly larger now, safety check) mv initrd-2.6.9-34ELsmp.img.new initrd-2.6.9-34ELsmp.img
6) reboot
Troy Engel wrote:
WipeOut wrote:
Which SATA RAID cards work natively on Centos 4.x??
I have heard that the only one supported is the 3ware cards but not sure if that requires a driver to be added or if it just works out the box.. Also would like to know of alternatives..
I am running a 3ware 9500S-12 card in our backup-to-disk server, and while it does work out of the box with CentOS4 the driver complains of strange errors. I have chosen to use the official downloaded driver package from the 3ware website; the resulting .ko is much larger in size, so I assume there's a lot more goodies in there. (mini HowTo below)
This is generally because it contains the newer firmware embedded in the module.
-Mike
Michael Best wrote:
strange errors. I have chosen to use the official downloaded driver package from the 3ware website; the resulting .ko is much larger in size, so I assume there's a lot more goodies in there. (mini HowTo below)
This is generally because it contains the newer firmware embedded in the module.
Ahh, gotcha. I neglected to mention in writing that the downloaded source from 3ware gets rid of all the errors that come from the stock .ko; I meant to state that but neglected.
-te
On Saturday 17 June 2006 19:52, Troy Engel wrote:
WipeOut wrote:
[snip]
Example: new kernel version 2.6.9-34ELsmp
- backup RPM module: cd /usr/src/ mkdir 2.6.9-34ELsmp cp -a /lib/modules/2.6.9-34ELsmp/kernel/drivers/scsi/3w-9xxx.ko
2.6.9-34ELsmp/
- change dev link so new compile uses the new kernel, while still
running the old kernel (see 3ware Makefile): cd /usr/src/ rm -f linux ln -s /lib/modules/2.6.9-34ELsmp/source linux
Very nice writeup :-) This step, however, is not needed and can cause problems by pointing to the wrong version next time you upgrade. The "new" place to look (instead of /usr/src/linux) is /lib/modules/$(uname -r)/build. This works with most things I've tried lately (like 3ware, xfs, infiniband stacks, etc..)
/Peter
compile new module cd /usr/src/3ware/<version> (i.e. /2.26.04.007/) make clean make chmod 0755 3w-9xxx.ko
copy new module over stock RPM one and depmod cp -a 3w-9xxx.ko
/lib/modules/2.6.9-34ELsmp/kernel/drivers/scsi/3w-9xxx.ko depmod -a 2.6.9-34ELsmp
backup original initrd, make new one with new module cd /boot/ cp -a initrd-2.6.9-34ELsmp.img initrd-2.6.9-34ELsmp.img.orig mkinitrd initrd-2.6.9-34ELsmp.img.new 2.6.9-34ELsmp (ls -l to see that new initrd is slightly larger now, safety check) mv initrd-2.6.9-34ELsmp.img.new initrd-2.6.9-34ELsmp.img
reboot
-
Chris Heiner -
Feizhou -
Jim Perrin -
Justin Piszcz -
Michael Best -
Peter Kjellström -
Troy Engel -
WipeOut