From mboxrd@z Thu Jan 1 00:00:00 1970 From: "K. Posern" Subject: getting a linux boot loader (preferably grub) installed on an intel imsm raid Date: Thu, 19 Aug 2010 00:56:05 -0400 Message-ID: <4C6CB965.7000905@gmail.com> Mime-Version: 1.0 Content-Type: multipart/signed; protocol="application/pkcs7-signature"; micalg=sha1; boundary="------------ms070307040605070709070007" Return-path: Sender: linux-raid-owner@vger.kernel.org To: "linux-raid@vger.kernel.org" List-Id: linux-raid.ids This is a cryptographically signed message in MIME format. --------------ms070307040605070709070007 Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: quoted-printable Hi all, /// The problem /// There are binary packages out there that do the trick based on=20 device-mapper (dmraid) (e.g. Ubuntu). But I would like to do it a) manually (because thats why I use Linux, because you can do things=20 manually and you can learn a lot (even if you don't succeed in the end) b) based on mdadm-imsm. Just there seems really /no/ documentation out=20 there on how to do it (or I successfully managed to google around it=20 since days now ;). I will be very glad for any bit of information that might help me to=20 eliminate some of the below parameters. And Again: I would be more than glad to contribute (back to the=20 community) by assembling a wiki page about all this, once I figured out=20 all the bits and pieces. //// The situation /// I am still trying to figure out how to install grub / grub2 on my intel=20 imsm raid. And it's a striping RAID-0. Because the documentation out=20 there is overall for RAID-1 (or 5) and the few bits I found for RAID-0,=20 just do not work for me. /// The questions /// Maybe someone could shed some light on these open questions: a) Do I need to install it to the Volumne (/dev/md126) or to the=20 Container (/dev/md127)? - My guess: The volume because it represents the = RAID, hence should be what gets assembled for the int13 BIOS handler by=20 the Option-ROM of the intel-sw-raid-controller. b) What device do I need to put in the /grub/boot/device.map file as (hd= 0): (/dev/md126, /dev/md127 or ...)? My guess: The same like a). c) Do you suggest grub1 (grub legacy) or grub2? *** For grub2: The default way to install it: grub-install does not = (seem to) work as grub2 then tries to find the /boot device itself and=20 grub built from bzr does not (yet) support mdadm arrays with metadata=20 v1.2 that are partitioned :( As I am quiet new to grub2 it would be very helpful to get an idea of=20 what of the (many) tools to use and if possible with what parameters. Plus I wonder if with grub2 there will be problems because grub2 will=20 try to assemble the RAID itsself. *** For grub: I did quiet some installations but all my trials did=20 always end in an Error 22 on "setup (hd0)" in the grub shell. <<< If=20 grub would be your recommendation I can post the details! Thanks a lot for any hint in advance! K. Posern P.S.: I would be still interested to hear how the two solutions that=20 support an intel BIOS-supported (mdadm-imsm >=3Dv3 and dmraid >=3Dv1) rai= d=20 compare to each other in terms of: speed (throughput), load/overhead=20 (cpu/ram), stability, features. --------------ms070307040605070709070007 Content-Type: application/pkcs7-signature; name="smime.p7s" Content-Transfer-Encoding: base64 Content-Disposition: attachment; filename="smime.p7s" Content-Description: S/MIME Cryptographic Signature MIAGCSqGSIb3DQEHAqCAMIACAQExCzAJBgUrDgMCGgUAMIAGCSqGSIb3DQEHAQAAoIIKajCC BTEwggMZoAMCAQICAwYm8zANBgkqhkiG9w0BAQUFADB5MRAwDgYDVQQKEwdSb290IENBMR4w HAYDVQQLExVodHRwOi8vd3d3LmNhY2VydC5vcmcxIjAgBgNVBAMTGUNBIENlcnQgU2lnbmlu ZyBBdXRob3JpdHkxITAfBgkqhkiG9w0BCQEWEnN1cHBvcnRAY2FjZXJ0Lm9yZzAeFw0wODEy MTIxOTEzNDFaFw0xMDEyMTIxOTEzNDFaMDsxFTATBgNVBAMTDEtudXRoIFBvc2VybjEiMCAG CSqGSIb3DQEJARYTcXVpY2toZWxwQGdtYWlsLmNvbTCCASIwDQYJKoZIhvcNAQEBBQADggEP 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