From mboxrd@z Thu Jan 1 00:00:00 1970 From: John Robinson Subject: Re: grub2/grub-pc install not possible on mdadm Date: Mon, 05 Mar 2012 12:34:23 +0000 Message-ID: <4F54B2CF.90705@anonymous.org.uk> References: <4F4C9A11.9060302@profihost.ag> <4F4F4B1D.4050000@redhat.com> <4F4F4EB3.6030909@profihost.ag> <4F4F519E.7040206@redhat.com> <4F508864.4050600@profihost.ag> <20120302100648.fe4e725f2e98880c839357b0@bbaw.de> <4F508EB6.2030101@profihost.ag> <4F5091BF.1000102@anonymous.org.uk> <4F509402.8070503@profihost.ag> <4F50ABA3.1070603@anonymous.org.uk> <4F50C7DC.3000700@profihost.ag> <20120302163236.3555fec1296cbe30d8d37972@bbaw.de> <4F547038.7060009@profihost.ag> <4F54899A.4040301@anonymous.org.uk> <20120305111402.e63fee5b49046ed146cb9dcc@bbaw.de> <4F54A42A.4020903@anonymous.org.uk> <20120305123806.ee01dd22b03c393314af12c9@bbaw.de> Mime-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: QUOTED-PRINTABLE Return-path: In-Reply-To: <20120305123806.ee01dd22b03c393314af12c9@bbaw.de> Sender: linux-raid-owner@vger.kernel.org To: =?ISO-8859-1?Q?Lars_T=E4uber?= Cc: linux-raid@vger.kernel.org List-Id: linux-raid.ids On 05/03/2012 11:38, Lars T=E4uber wrote: > Am Mon, 05 Mar 2012 11:31:54 +0000 > John Robinson schrieb: >>> You mean if Stefan would have used an old fashioned partition table >>> inside a Linux SW-RAID with metadata 1.2, grub would have booted li= ke >>> normal? >> >> Yes, both grub2 and grub legacy (0.97) read partition tables. Only g= rub2 >> can really read inside RAID arrays - any metadata, any RAID level - = [...] > > Does grub2 also read partitions inside SW-RAID if the RAID consists o= f > partitions? > How deep works this mechanism? > > DISK =3D> partitions =3D> RAID =3D> partition table =3D> RAID =3D= > .... I don't know. I'm sure DISK =3D> partitions =3D> RAID =3D> partitions w= ill=20 work - that's what I was suggesting Stefan should do to use 1.2=20 metadata. You can have LVM in the mix too. Oh and don't forget the=20 filesystem right at the end. It may be possible to get it to support=20 multi-level RAID but I haven't tried - I try to keep it simple with DIS= K=20 =3D> partition =3D> RAID-1 =3D> ext2; it's enough bother getting all th= e other=20 mess taken care of in the initrd and Linux, without doing it in GRUB to= o! Cheers, John. -- To unsubscribe from this list: send the line "unsubscribe linux-raid" i= n the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html