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#1 2011-10-02 15:47:18

cp2
Member
Registered: 2011-10-01
Posts: 22

Arch install on RAID - boot error

Hello all. So I installed Arch within a raid configuration, but it has a boot error preventing me from actually booting successfully. I'm at the point where I need to do the pacman updates and DE/WM installations and stuff. The error I am getting is this:

Waiting 10 seconds for device /dev/md0
Root device '/dev/md0 doesn't exist. Attempting to create it.
ERROR: Unable to determine major/minor number of root device '/dev/md0'.
You are being dropped to a recovery shell
     Type 'exit' to try and continue booting
sh: can't access tty: job control turned off
[ramfs /]#


I did type exit and the same thing comes up. Any advice?

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#2 2011-10-02 16:24:23

lilsirecho
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Registered: 2003-10-24
Posts: 5,000

Re: Arch install on RAID - boot error

I have a raid0 install of archlinux which boots from one of the 5 devices in the array on a /boot partition of that device.

What raid system are you using and do you have a /boot partition assigned?


Prediction...This year will be a very odd year!
Hard work does not kill people but why risk it: Charlie Mccarthy
A man is not complete until he is married..then..he is finished.
When ALL is lost, what can be found? Even bytes get lonely for a little bit!     X-ray confirms Iam spineless!

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#3 2011-10-02 16:29:29

cp2
Member
Registered: 2011-10-01
Posts: 22

Re: Arch install on RAID - boot error

lilsirecho wrote:

I have a raid0 install of archlinux which boots from one of the 5 devices in the array on a /boot partition of that device.

What raid system are you using and do you have a /boot partition assigned?

I am running raid5.  And I do have a separate partition for /boot. Also a separate partition for swap and / was on the array. At least that is how I remember it.

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#4 2011-10-02 16:37:45

lilsirecho
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Registered: 2003-10-24
Posts: 5,000

Re: Arch install on RAID - boot error

Sounds similar to my install altho yours is raid5.

I am having major-minor number fail on a HDD at this time(not a raid arranged HDD).

Many posts regarding the major-minor number fail in recent weeks including mine which is active today.

Some report it as a mkinitcpio problem and solve it by regressing to a prior release.

I have not solved my case and don't expect any resolution soon.

Good luck with yours and I hope you are more successful than I have been!!!


Prediction...This year will be a very odd year!
Hard work does not kill people but why risk it: Charlie Mccarthy
A man is not complete until he is married..then..he is finished.
When ALL is lost, what can be found? Even bytes get lonely for a little bit!     X-ray confirms Iam spineless!

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#5 2011-10-02 16:42:22

cp2
Member
Registered: 2011-10-01
Posts: 22

Re: Arch install on RAID - boot error

Yikes.  I actually did mine based off of a post you did.  So.....yikes.  Maybe I neet to put / on a different partition.

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#6 2011-10-02 16:51:14

lilsirecho
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Registered: 2003-10-24
Posts: 5,000

Re: Arch install on RAID - boot error

Perhaps.  My root is the second partition of all 5 drives.  My /boot partition is the first partition of one of the drives.  I have a swap partition also on the first partition of one of the drives.

All drives are utilized in /root as partition 2 devices.  I have no /home partition...run in root.

EDIT:  The problem I am experiencing is on a separate HDD archlinux linux install.

My raid0 is contained in CF flash devices using SATA to CF adapters and is fully functional at this time.

Last edited by lilsirecho (2011-10-02 16:54:29)


Prediction...This year will be a very odd year!
Hard work does not kill people but why risk it: Charlie Mccarthy
A man is not complete until he is married..then..he is finished.
When ALL is lost, what can be found? Even bytes get lonely for a little bit!     X-ray confirms Iam spineless!

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#7 2011-10-02 17:24:25

cp2
Member
Registered: 2011-10-01
Posts: 22

Re: Arch install on RAID - boot error

Your / is on the raid array though right? Which is this 2nd partition you talk about right?

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#8 2011-10-02 19:15:50

lilsirecho
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Registered: 2003-10-24
Posts: 5,000

Re: Arch install on RAID - boot error

Yowsah!  Each CF has two paertitions, 100MB partition#1 and the rest of the CF card (16GB) as partition#2.

Thus, there is 79GB of root.................


Prediction...This year will be a very odd year!
Hard work does not kill people but why risk it: Charlie Mccarthy
A man is not complete until he is married..then..he is finished.
When ALL is lost, what can be found? Even bytes get lonely for a little bit!     X-ray confirms Iam spineless!

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#9 2011-10-02 19:17:30

cp2
Member
Registered: 2011-10-01
Posts: 22

Re: Arch install on RAID - boot error

Is this a good or a bad thing?  I'm no linux expert, but does / in an array = problems?

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#10 2011-10-02 19:44:10

lilsirecho
Veteran
Registered: 2003-10-24
Posts: 5,000

Re: Arch install on RAID - boot error

I have been root since I started archlinux in 2003 and never use user.

I am repeatedly told not to do that!


I continue....

Warned in many areas and locked out in others but I continue...............

In order to change a given system, root is required by everyone in archlinux at many diverse instances anyhow!


Prediction...This year will be a very odd year!
Hard work does not kill people but why risk it: Charlie Mccarthy
A man is not complete until he is married..then..he is finished.
When ALL is lost, what can be found? Even bytes get lonely for a little bit!     X-ray confirms Iam spineless!

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#11 2011-10-02 21:46:10

cp2
Member
Registered: 2011-10-01
Posts: 22

Re: Arch install on RAID - boot error

alright, so now if the / is not supposed to go on the /dev/md0, should I make / it's own 100MB partition? I'm sorry if I am asking this when I should be looking it up. I'll look it up as well.

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#12 2011-10-03 14:04:38

lilsirecho
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Registered: 2003-10-24
Posts: 5,000

Re: Arch install on RAID - boot error

Root is the combo of 5 partition#2 drives and is /dev/md0.  I set it up in the install sequence with my FTP install.

EDIT:  I installed grub in the /boot partition of 100MB which I mentioned in previous post.  It is not in the MBR.  I used grub2.

Last edited by lilsirecho (2011-10-03 14:07:08)


Prediction...This year will be a very odd year!
Hard work does not kill people but why risk it: Charlie Mccarthy
A man is not complete until he is married..then..he is finished.
When ALL is lost, what can be found? Even bytes get lonely for a little bit!     X-ray confirms Iam spineless!

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