Re: [foxboro] Broken Concatenated Disk

Hi Ron,

  I did look at HH835 earlier today, but it did not seem to address my
particular problem.

  After trying some of the replace procedures I wound up with a primary
drive that would not boot either - it claimed it could not mount the root
partition.

  So I dropped two new drives in, booted from the cdrom, and did a
restore_8MM.  Somewhere after restoring the /, /var, /usr, & Informix and
before setting up the /opt concatenation, I had problems with the new
drives.

  Initially dft show_status showed d1 through d5 as "okay", but newfs gave
me a write error and said the NEW disk needs maintenance.

  I was able to dft format_disk and add_to_sys and then newfs worked ok, but
I still had a nds_maintenance on the new disk.  I finished the usfrestore of
the opt partition, and the first reboot worked fine, but after another
reboot the NEW main drive lost it's / root partition just like the old disk
had earlier.

  I rebooted from the cdrom again and just restored the /, /var/, /usr, and
Informix raw and skipped the /opt partition.

  Now I am online again, dft show_status shows all "okay", and I have no
idea what the original problem was.

  Just for kicks I replaced the external scsi cable to the drive enclosure,
but I doubt that was the problem.

  Thanks for the help,

  Steve Murray

-----Original Message-----
From: Ron Deen [mailto:r.deen@xxxxxxxxx]
Sent: Monday, February 11, 2002 2:15 PM
To: foxboro@xxxxxxxxxxxxx
Subject: Re: [foxboro] Broken Concatenated Disk



I think the answer in the response from the "metastat" command you have 
supplied:

>     Invoke: after replacing "Maintenance" components:
>                 metareplace d5 c0t2d0s7 <new device>

Did you try that?

HH 835 may be of some help too. Some translation I did from this HH to the 
newer id's used today:
When a device (this example could be for your drive but the example was for
a 
mirrored drive that "nds_maint"):

metadetach -f d5 d15<cr>
metattach d5 d15<cr>

I'm almost sure you will need to roll back a tape by the way. I don't think 
that the data can be trusted when only one of the two disks is replaced.


Regards

Ron Deen
On Monday 11 February 2002 21:32, you wrote:
>   Anyone familiar with repairing a concatenated drive?
>
>   I have a AW51B with a simple concatenated drive (NOT mirrored).  From
> single user mode I can mount /opt and look at all the /opt files (at least
> all the SAM files, our operator displays, all the /opt/fox files, and
every
> other directory I checked).
>
>   The Informix historian conked out over the weekend and the last
timestamp
> on our "cooked" file was the same time that the concatenated disk went
into
> "needs maintenance" status.
>
>   If I drop in another disk and mount /opt I can tell which directories
are
> on the "bad" cat disk because I can't access them on the "new" cat disk -
> which is to be expected because the new disk is empty.
>
>   So if I CAN access directories that are on the "bad" disk, but the
status
> is "Nds_Maint", how can I  re-concatenate the disk?  There is a lot of
info
> in the Foxdoc on repairing mirrored drives, but not much on a simple
> concatenation.  The DiskSuite manual on docs.sun.com doesn't seem to
> address my problem either.
>
>   Any ideas?
>
> Steve Murray
> Asarco
> smurray@xxxxxxxxxx
>
>
>   My md.tab has:
> d15 2 1 /dev/dsk/c0t3d0s7 1 /dev/dsk/c0t2d0s7
>
>   3FFAW1# dft show_status
>
> Metamirror      Submirror      Size       Device        State
>
>    d0:             d10:        76000    ESP0 / SCSI3    Okay
>    d1:             d11:       197600    ESP0 / SCSI3    Okay
>    d2:             d12:        57760    ESP0 / SCSI3    Okay
>    d3:             d13:       258400    ESP0 / SCSI3    Okay
>    d4:             d14:      1231200    ESP0 / SCSI3    Okay
>    d5:             d15:      6478240    ESP0 / SCSI3    Nds_Maint
>
> Operation SUCCEEDED
>
> 3FFAW1# metastat -t
> .
> .
> .
> d5: Mirror
>     Submirror 0: d15
>       State: Needs maintenance Sun Feb 10 03:42:31 2002
>     Pass: 1
>     Read option: roundrobin (default)
>     Write option: parallel (default)
>     Size: 6478240 blocks
>
> d15: Submirror of d5
>     State: Needs maintenance Sun Feb 10 03:42:31 2002
>     Invoke: after replacing "Maintenance" components:
>                 metareplace d5 c0t2d0s7 <new device>
>     Size: 6478240 blocks
>     Stripe 0:
>       Device     Start  Dbase  State        Hot Spare  Time
>       c0t3d0s7       0  No     Okay                    Wed Apr 07
08:39:01
> 1999
>     Stripe 1:
>       Device     Start  Dbase  State        Hot Spare  Time
>       c0t2d0s7       0  No     Last Erred              Sun Feb 10
03:42:31
> 2002
>
>
>
>

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