Metastat shows state needs maintenance Post: 303037776

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Operating Systems Solaris Metastat shows state needs maintenance Post 303037776 by gull04 on Tuesday 13th of August 2019 09:15:29 AM

08-13-2019

Registered User

HI,

You've stated that the storage team did the migration of IBM Storage to Nimble storage, I'm guessing that that is where the problem lies. Or there could be issues with the vpath software and Nimble storage, does the Solaris version support Nimble?

I would have tackled this a different way;

Added the new disk to the running system as normal.
Extended the metadevice into a four way mirror.
Remove the original disk.
Recreate the metadb.

I'm not sure why you would attempt to do this using SAN replication, the only exception I would make is where you can replicate the device at a block level ensuring tha the boot block and everything else would come over.

You may get away with installing the boot block and re-labeling the disks, but I'd rather adopt the add the disks and extend the mirror approach.

Given the current situation, you may want to try the metarecover options to recover the individual devices.

Regards

Gull04

--- Post updated at 03:15 PM ---

Hi,

Just out of curiosity, have you made any required changes to /etc/vfstab - you don't mention it.

Regards

Gull04

Last edited by gull04; 08-13-2019 at 10:20 AM.. Reason: Additional Information.

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LEARN ABOUT SUNOS

mddb.cf

mddb.cf(4)							   File Formats 							mddb.cf(4)

NAME

       mddb.cf - metadevice state database replica locations

SYNOPSIS

       /etc/lvm/mddb.cf

DESCRIPTION

       The /etc/lvm/mddb.cf file is created when the metadb(1M) command is invoked. You should never directly edit this file.

       The  file /etc/lvm/mddb.cf is used by the metainit(1M) command to find the locations of the metadevice state databases replicas. The metadb
       command creates the file and updates it each time it is run. Similar information is entered in the /kernel/drv/md.conf file.

       Each metadevice state database replica has a unique entry in the /etc/lvm/mddb.cf file. Each entry contains the driver and minor unit  num-
       bers  associated  with  the block physical device where a replica is stored. Each entry also contains the block number of the master block,
       which contains a list of all other blocks in the replica.

       Entries in the /etc/lvm/mddb.cf file are of the form: driver_name minor_t daddr_t  checksum where driver_name  and  minor_t  represent  the
       device  number  of  the physical device storing this replica. daddr_t is the disk block address. checksum is used to make certain the entry
       has not been corrupted.	A pound sign (#) introduces a comment.

EXAMPLES

       Example 1: Sample File

       The following example shows a mddb.cf file.

       #metadevice database location file do not hand edit
       #driver minor_t daddr_t device id       checksum
       sd      152     16      id1,sd@SSEAGATE_JDD288110MC9LH/a        -2613

       In the example above, the value for daddr_t indicates that the offset from the start of a given partition is 16 disk blocks from the  start
       of that partition.

FILES

       /etc/lvm/mddb.cf

       /kernel/drv/md.conf

SEE ALSO

       mdmonitord(1M),	metaclear(1M),	metadb(1M),  metadetach(1M),  metahs(1M),  metainit(1M),  metaoffline(1M),  metaonline(1M), metaparam(1M),
       metarecover(1M), metarename(1M), metareplace(1M), metaroot(1M),	metassist(1M),	metaset(1M),  metastat(1M),  metasync(1M),  metattach(1M),
       md.cf(4), md.tab(4), attributes(5), md(7D)

       Solaris Volume Manager Administration Guide

SunOS 5.10							    8 Aug 2003								mddb.cf(4)

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