From: Granzow, Doug (NCI) (granzowd@mail.nih.gov)
Date: Wed May 22 2002 - 19:56:53 EDT
Thanks to:
Guy B. Purcell
Kevin Boykin
Johnny Hall
Darren Moulding
Several folks suggested using dd to copy the data to a partition on another
drive, instead of trying to get disksuite to mirror the data. Unfortunately
the problematic drive failed completely before I was able to try this.
Fortunately, though, I was able to get a backup job completed just an hour
before the drive failed completely. (We do regular backups but it is nice
to be able to restore from something so recent.) I am now waiting for a
restore job to complete.
Thanks again for your input!
Doug
> -----Original Message-----
> From: Granzow, Doug (NCI)
> Sent: Wednesday, May 22, 2002 11:55 AM
> To: Sun Managers List
> Subject: How to mirror a failing drive?
>
>
> I have a Disksuite 4.2 metadevice that, due to a string of
> events, contains
> only one submirror. One of the stripes on that mirror is now
> marked as
> "Last Erred" in disksuite. It is still online but I
> occasionally get errors
> like the following in /var/adm/messages:
>
> May 22 11:18:20 server Error for Command: read
> Error
> Level: Fatal
> May 22 11:18:20 server unix: Requested Block: 1757020
> Error Block: 1757117
> May 22 11:18:20 server unix: Vendor: FUJITSU
> Serial Number: 0019530620
> May 22 11:18:20 server unix: Sense Key: Media Error
> May 22 11:18:20 server unix: ASC: 0x13 (address mark
> not found for
> data field), ASCQ: 0x0, FRU: 0x0
> May 22 11:18:20 server unix: WARNING: md: d52: read error on
> /dev/dsk/c0t12d0s6
>
> When I try to attach another concat/stripe as a new
> submirror, it starts to
> resync, but eventually gives up and leaves the new submirror
> in "Attaching"
> status -- it never makes it to "OK". Is there any way to get
> Disksuite to
> mirror what it *can* read, so that when I replace this disk,
> I do not lose
> *all* of the data?
>
> Thanks,
> Doug
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