[gentoo-user] Errormessage from mdadm at boot

[gentoo-user] Errormessage from mdadm at boot

[Dan Johansson]

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As dmraid is hard masked and it's future doesn't look to bright I have decided 
to give software raid a try 
(http://www.gentoo.org/doc/en/gentoo-x86-tipsntricks.xml). Everything works 
fine with one exception, when I boot the system I'm getting the following 
error:
Starting up RAID devices (mdadm)
mdadm: No arrays found in config file

But the system comes up correctly. My /etc/mdadm.conf file contains the 
following:
ARRAY /dev/md4 level=raid1 num-devices=2 
UUID=f03ab886:29539a16:60351ac2:644491c6
ARRAY /dev/md3 level=raid1 num-devices=2 
UUID=b4721e3b:7eab0b51:231a400e:3e228ff3
ARRAY /dev/md2 level=raid1 num-devices=2 
UUID=b660191e:81583b46:491c57c8:2ebb62b2
ARRAY /dev/md1 level=raid1 num-devices=2 
UUID=f3134895:0a4f292b:8b078635:1f67f091

and cat /proc/mdstat gives:
Personalities : [raid1]
md1 : active raid1 hdc1[1] hda1[0]
      32000 blocks [2/2] [UU]
md2 : active raid1 hdc2[1] hda2[0]
      505920 blocks [2/2] [UU]
md3 : active raid1 hdc3[1] hda3[0]
      497920 blocks [2/2] [UU]
md4 : active raid1 hdc4[1] hda4[0]
      79377088 blocks [2/2] [UU]
unused devices: <none>

Any ideas why mdadm (mdadm -As) can not find my arrays at boot time.
-- 
Dan Johansson, <http://www.dmj.nu>
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Re: [gentoo-user] Errormessage from mdadm at boot

[Justin Piszcz]

On Sun, 3 Sep 2006, Dan Johansson wrote:

> As dmraid is hard masked and it's future doesn't look to bright I have decided
> to give software raid a try
> (http://www.gentoo.org/doc/en/gentoo-x86-tipsntricks.xml). Everything works
> fine with one exception, when I boot the system I'm getting the following
> error:
> Starting up RAID devices (mdadm)
> mdadm: No arrays found in config file
>
> But the system comes up correctly. My /etc/mdadm.conf file contains the
> following:
> ARRAY /dev/md4 level=raid1 num-devices=2
> UUID=f03ab886:29539a16:60351ac2:644491c6
> ARRAY /dev/md3 level=raid1 num-devices=2
> UUID=b4721e3b:7eab0b51:231a400e:3e228ff3
> ARRAY /dev/md2 level=raid1 num-devices=2
> UUID=b660191e:81583b46:491c57c8:2ebb62b2
> ARRAY /dev/md1 level=raid1 num-devices=2
> UUID=f3134895:0a4f292b:8b078635:1f67f091
>
> and cat /proc/mdstat gives:
> Personalities : [raid1]
> md1 : active raid1 hdc1[1] hda1[0]
>      32000 blocks [2/2] [UU]
> md2 : active raid1 hdc2[1] hda2[0]
>      505920 blocks [2/2] [UU]
> md3 : active raid1 hdc3[1] hda3[0]
>      497920 blocks [2/2] [UU]
> md4 : active raid1 hdc4[1] hda4[0]
>      79377088 blocks [2/2] [UU]
> unused devices: <none>
>
> Any ideas why mdadm (mdadm -As) can not find my arrays at boot time.
> -- 
> Dan Johansson, <http://www.dmj.nu>
> ***************************************************
> This message is printed on 100% recycled electrons!
> ***************************************************
>

Is /etc/mdadm.conf the correct location?  Debian uses 
/etc/mdadm/mdadm.conf.  Are you using a special initrd/initramfs boot 
method?
-- 
gentoo-user@gentoo.org mailing list

Re: [gentoo-user] Errormessage from mdadm at boot

[Dan Johansson]

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On Sunday 03 September 2006 12:29, Justin Piszcz wrote:
> On Sun, 3 Sep 2006, Dan Johansson wrote:
> > As dmraid is hard masked and it's future doesn't look to bright I have
> > decided to give software raid a try
> > (http://www.gentoo.org/doc/en/gentoo-x86-tipsntricks.xml). Everything
> > works fine with one exception, when I boot the system I'm getting the
> > following error:
> > Starting up RAID devices (mdadm)
> > mdadm: No arrays found in config file
> >
> > But the system comes up correctly. My /etc/mdadm.conf file contains the
> > following:
> > ARRAY /dev/md4 level=raid1 num-devices=2
> > UUID=f03ab886:29539a16:60351ac2:644491c6
> > ARRAY /dev/md3 level=raid1 num-devices=2
> > UUID=b4721e3b:7eab0b51:231a400e:3e228ff3
> > ARRAY /dev/md2 level=raid1 num-devices=2
> > UUID=b660191e:81583b46:491c57c8:2ebb62b2
> > ARRAY /dev/md1 level=raid1 num-devices=2
> > UUID=f3134895:0a4f292b:8b078635:1f67f091
> >
> > and cat /proc/mdstat gives:
> > Personalities : [raid1]
> > md1 : active raid1 hdc1[1] hda1[0]
> >      32000 blocks [2/2] [UU]
> > md2 : active raid1 hdc2[1] hda2[0]
> >      505920 blocks [2/2] [UU]
> > md3 : active raid1 hdc3[1] hda3[0]
> >      497920 blocks [2/2] [UU]
> > md4 : active raid1 hdc4[1] hda4[0]
> >      79377088 blocks [2/2] [UU]
> > unused devices: <none>
> >
> > Any ideas why mdadm (mdadm -As) can not find my arrays at boot time.
> > --
>
> Is /etc/mdadm.conf the correct location?  Debian uses
> /etc/mdadm/mdadm.conf.  Are you using a special initrd/initramfs boot
> method?
/etc/mdadm.conf is there, I have even tried to copy it 
to /etc/mdadm/mdadm.conf and the error is still there.
No initrd/iniramfs on this system.

-- 
Dan Johansson, <http://www.dmj.nu>
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This message is printed on 100% recycled electrons!
***************************************************

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[gentoo-user] Re: Errormessage from mdadm at boot

[Remy Blank]

Dan Johansson wrote:
> Everything works 
> fine with one exception, when I boot the system I'm getting the following 
> error:
> Starting up RAID devices (mdadm)
> mdadm: No arrays found in config file

(snip)

> Any ideas why mdadm (mdadm -As) can not find my arrays at boot time.

Actually, your arrays are probably found all right, but by the kernel
and not by mdadm. I have the same message here, but everything works well.

I guess you have set your raid partitions to "raid autodetect", and all
your partitions are detected by the kernel before the initialization
scripts even start. Then, when mdadm -As is called, it doesn't find any
*other* raid arrays to start and gives a (misleading) error message.

If your /proc/mdstat looks ok after booting, you can safely ignore the
message.

-- Remy


Remove underscore and suffix in reply address for a timely response.

-- 
gentoo-user@gentoo.org mailing list

Re: [gentoo-user] Re: Errormessage from mdadm at boot

[Neil Bothwick]

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On Sun, 03 Sep 2006 12:38:34 +0200, Remy Blank wrote:

> I guess you have set your raid partitions to "raid autodetect", and all
> your partitions are detected by the kernel before the initialization
> scripts even start. Then, when mdadm -As is called, it doesn't find any
> *other* raid arrays to start and gives a (misleading) error message.
> 
> If your /proc/mdstat looks ok after booting, you can safely ignore the
> message.

Or you can remove raid from RC_VOLUME_ORDER in /etc/conf.d/rc. If all
your RAID devices are set up by the kernel, ther's no point in even
trying to scan for them.


-- 
Neil Bothwick

Is it true that cannibals don't eat clowns because they taste funny?

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