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kiss-o-matic
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Joined: 19 Jul 2004
Posts: 392
Location: Tokyo
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 Posted: Fri Mar 28, 2008 5:39 pm Post subject: software raid problem -- conf file? [solved] |
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I'm about to crash, so I'll make this quick. I have a pretty simple RAID 1 (or am working on it anyway).
/dev/md1 = /dev/sda1 + /dev/sdb1
/dev/md2 = /dev/sda2 + /dev/sdb2
/dev/md3 = /dev/sda3 + /dev/sdb3
md1 is boot, md2 swap, md3 root.
I had issues getting the right SATA driver built int othe kernl, but that's solved. Now, the next problem:
raid1: raid set md3 active with2 out of 2 mirrors
<snip>
raid1: raid set md1 active with2 out of 2 mirrors
<snip>
List of all partitions:
0800 976762584 sda driver: sd
0801 506016 sda1
0802 4008217 sda2
0803 972245767 sda3
0800 976762584 sdb driver: sd
0801 506016 sdb1
0802 4008217 sdb2
0803 972245767 sdb3
0b00 1048575 sr0 driver :sr // what is this?
0903 972245696 md3 (driver?)
0901 505920 md1 (driver?)
No filesystem could mount root, tried:
Kernel -panic . not syncing: VFS: Unable to mount root fs on unknown-block(9,3).
Is this generally a problem w/ /etc/mdadm.conf?
Sleeping... up in a few hours.
Last edited by kiss-o-matic on Sat Mar 29, 2008 2:37 am; edited 1 time in total |
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NeddySeagoon
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Joined: 05 Jul 2003
Posts: 27174
Location: 56N 3W
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| Posted: Fri Mar 28, 2008 6:25 pm Post subject: |
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kiss-o-matic,
| Code: | | 0b00 1048575 sr0 driver :sr // what is this? |
This is your CDROM.
| Code: | | unknown-block(9,3). |
tells that the kernel found your /dev/md3 but was unable to read what it found there.
The usual cause of this is that the file system driver, needed to read /dev/md3 is not built into the kernel.
A more subtle cause is not setting your partitions underlying the raid sets to type 0xfd for raid autodetect.
During booting do you see something like | Code: | [ 34.738940] md: Scanned 14 and added 14 devices.
[ 34.741218] md: autorun ...
[ 34.743454] md: considering sdb10 ...
[ 34.745664] md: adding sdb10 ...
[ 34.747798] md: sdb9 has different UUID to sdb10
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which shows the autodetect in progress or do you get | Code: | [ 34.614030] md: Autodetecting RAID arrays.
[ 34.741218] md: autorun ...
[ 35.015558] md: ... autorun DONE. |
which shows that no raid sets were formed?
_________________
Regards,
NeddySeagoon
Computer users fall into two groups:-
those that do backups
those that have never had a hard drive fail. |
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HeissFuss
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Joined: 11 Jan 2005
Posts: 386
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| Posted: Fri Mar 28, 2008 8:15 pm Post subject: |
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| Looks like md1 and md3 assembled ok. If it's not missing file system support for you / volume type, let's see your fstab and grub.conf. |
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kiss-o-matic
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Joined: 19 Jul 2004
Posts: 392
Location: Tokyo
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| Posted: Sat Mar 29, 2008 1:37 am Post subject: |
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The file system on md3 is reiserfs, and was definitely not built into the kernel.
I did the install process again after near completion b/c I realized I used an x86 tarball
and no i686.  In my haste, I forgot to add reiserfs. In my defense, it was 3AM
at this time.
However, now I have another issue but it seems to be udev related:
I get to the boot process, then
| Code: |
*Mounting /dev for udev ... [oops]
*The "mount" command failed with error:
wrong fs type, bad option, bad superblock on udev, missing codepage or other error
In some cases useful info is found in syslog - try dmesg | tail or so
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This doesn't seem to be related to the issue above. Guess it deserves it's own thread? |
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HeissFuss
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Joined: 11 Jan 2005
Posts: 386
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| Posted: Sat Mar 29, 2008 2:20 am Post subject: |
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| It looks like udev is broken by something missing in your kernel. Make sure you have tmpfs built in. If you do, you should post you config (- comments) here. |
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kiss-o-matic
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Joined: 19 Jul 2004
Posts: 392
Location: Tokyo
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| Posted: Sat Mar 29, 2008 2:28 am Post subject: |
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It was (what I consider to be a well hidden) tmpfs option missing. Now on to other issues, but I think I can sort those out.  |
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Installing Gentoo
