andrei,

Thanks for reply. Yes I am aware of the chainload. My /boot is located on
sda1 & sdb1 partitions.
I will get a chance next week to be in front of the server and after
upgrade to beta 3 will report back.


Thanks

On 22 March 2016 at 22:09, Andrei Borzenkov <[email protected]> wrote:

> On Tue, Mar 22, 2016 at 1:10 PM, Kilburn Abrahams <[email protected]>
> wrote:
> > I upgraded a gentoo box which has RAID 1 from 350GB to 1TB drives. Then I
> > decided to upgarde from grub 1 to grub 2.
> > Steps:
> > 1.  installed grub 2 V2.02 beta 2
> > 2.  checked /boot/grub/device.map (all looked fine)
> >      (fd0) /dev/fd0
> >      (hd0) /dev/sda
> >      (hd1) /dev/sdb
>
> device.map is mostly redundant in case of grub2 except in very special
> use cases. You are almost always better off without it. Certainly it
> is not required in your case.
>
> > 3.  grub2-install --grub-setup=/bin/true /dev/sda
>
> --grub-setup is obsolete, use --no-bootsector instead. But you are
> aware that it won't install boot sector/core.img, so you will need
> some other bootloader to chainload it, are not you?
>
> >      Installing for i386-pc platform.
> >      grub2-install: error: disk `mduuid/c845d9551ec0b439cb201669f728008a'
> > not found.
> >
> > blkid is returning this.
> >
> > /dev/md0: UUID="b75a81b5-59c6-4eb8-aadc-66650f5ea1bd" TYPE="ext2"
> > /dev/md2: UUID="3211adef-bf44-41d4-86bb-164b46c3d909" TYPE="ext4"
> > /dev/md1: UUID="6036ef9a-878e-45ce-b5b3-bec8cd920fd2" TYPE="swap"
> > /dev/sdb1: UUID="c845d955-1ec0-b439-cb20-1669f728008a"
> > TYPE="linux_raid_member" PARTUUID="6795d2bc-01"
> > /dev/sdb2: UUID="e1c7ed62-0e38-d06b-cb20-1669f728008a"
> > TYPE="linux_raid_member" PARTUUID="6795d2bc-02"
> > /dev/sdb3: UUID="18a2e9e5-05d5-4ba4-cb20-1669f728008a"
> > TYPE="linux_raid_member" PARTUUID="6795d2bc-03"
> > /dev/sda1: UUID="c845d955-1ec0-b439-cb20-1669f728008a"
> > TYPE="linux_raid_member" PARTUUID="6795d2bc-01"
> > /dev/sda2: UUID="e1c7ed62-0e38-d06b-cb20-1669f728008a"
> > TYPE="linux_raid_member" PARTUUID="6795d2bc-02"
> > /dev/sda3: UUID="18a2e9e5-05d5-4ba4-cb20-1669f728008a"
> > TYPE="linux_raid_member" PARTUUID="6795d2bc-03"
> >
>
> Well, something went wrong, it should not interpret device UUID as MD
> UUID. Where is your /boot located?
>
> > The HDD are formatted as
> > /dev/sda1 * 2048 67583 65536 32M fd Linux raid autodetect
> > /dev/sda2 67584 12355583 12288000 5.9G fd Linux raid autodetect
> > /dev/sda3 12355584 1953525167 1941169584 925.6G fd Linux raid autodetect
> > /dev/sdb1 * 2048 67583 65536 32M fd Linux raid autodetect
> > /dev/sdb2 67584 12355583 12288000 5.9G fd Linux raid autodetect
> > /dev/sdb3 12355584 1953525167 1941169584 925.6G fd Linux raid autodetect
> >
> > Is there something I am missing? I am using mdadm 3.3.1 but can upgarde
> to
> > 3.4. I believe grub2-install calls mdadm via grub2-probe, is this what is
> > causing the problem, if so, how can I correct this?
> >
>
> I suggest you retest with 2.02~beta3 and if problem still persists we
> can try to debug it. You can find all pre-releases on
> http://alpha.gnu.org/gnu/grub.
>
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