From mboxrd@z Thu Jan 1 00:00:00 1970 From: Michael Evans Subject: Re: Linux mdadm superblock question. Date: Sat, 13 Feb 2010 01:40:13 -0800 Message-ID: <4877c76c1002130140x65cb2b24ydcb57913c6d89b64@mail.gmail.com> References: <4B7664AC.4080504@texsoft.it> <4877c76c1002130126m7ff93c33m5159eb4e554d22b4@mail.gmail.com> <4B767249.2070305@texsoft.it> Mime-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: QUOTED-PRINTABLE Return-path: In-Reply-To: <4B767249.2070305@texsoft.it> Sender: linux-raid-owner@vger.kernel.org To: Giovanni Tessore Cc: linux-raid@vger.kernel.org List-Id: linux-raid.ids On Sat, Feb 13, 2010 at 1:35 AM, Giovanni Tessore w= rote: > >>> I recently reinstalled my systems, and I had to use superblock 0.9 = to be >>> able to boot ext4 from raid-1 (kernel 2.6.31 - grub2 1.97-beta4). >>> I didn't go deep with it as I was quite in hurry, so I'm not sure i= f it >>> depends by grub2 or by kernel's md autodetection at boot. >>> I used superblock 1.1 for the others md devices. >>> >>> ... >> >> mdadm 1.0 block devices, since stored at the end, can still be used >> /read only/ the same way that 0.90 devices were used before grub kne= w >> how to talk to them. =A0By looking at the underlying block devices a= nd >> ignoring their tails. =A0This does however only hold for raid-1 layo= uts >> with the 1.0 or 0.90 format labels. > > I guessed so, infact I created superblock 1.0 for the raid-1 devices = md0 > (root) and md1 (swap), while 1.1 for the others .. but it didn't work= and I > had to revert to 0.9 for root and swap ... > > Regards > > -- > Cordiali saluti. > Yours faithfully. > > Giovanni Tessore > > > -- > To unsubscribe from this list: send the line "unsubscribe linux-raid"= in > the body of a message to majordomo@vger.kernel.org > More majordomo info at =A0http://vger.kernel.org/majordomo-info.html > Just a guess, but did you tell grub root was /dev/md0 or did you say root was /dev/sd(whatever backs md0) ? -- 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