RE: Please help! How to reconstitute array (drive order problem)?

Glad you read the man page.  Most people seem too lazy to learn something.

I like mdadm, so I would create the config file.

Jim gave away the answer!
Or you could do as Jim Paris said:
"So your drives are now hde, hdg, hdo, hdh, hdm, hdn, hdp.  Something like
  mdadm --assemble /dev/md0 hd[egohmnp]
should do the trick."

Ha!  Maybe Jim did a typo!  Try this:
mdadm --assemble /dev/md0 /dev/hd[egohmnp]
Just make sure you list the current/correct devices.
If they were partitioned, be sure to use the partitions!
If each disk had 1 partition, this would be the correct command:
mdadm --assemble /dev/md0 /dev/hd[egohmnp]1

The "--auto" is new to me.  I have an old version.

The UUID is a unique ID.  Every disk that makes up the array will have the
same ID.

"--scan" requires a config file.

Guy

-----Original Message-----
From: linux-raid-owner@xxxxxxxxxxxxxxx
[mailto:linux-raid-owner@xxxxxxxxxxxxxxx] On Behalf Of David Wuertele
Sent: Wednesday, October 27, 2004 8:10 AM
To: linux-raid@xxxxxxxxxxxxxxx
Subject: Re: Please help! How to reconstitute array (drive order problem)?

Guy> Use mdadm to start your array.
Guy> Details: "man mdadm"
Guy> You may need to install mdadm.

Wow, looks like mdadm is a lifesaver.  After reading the man page, it
looks like I should run

    mdadm --assemble --scan /dev/md0 --auto=yes

Will this find all seven of the component partitions that make up the
md0 RAID5?  Or do I have to list those partitions in the config file?

>From the man page: "The identity can be given with the --uuid option,
  with the --super- minor option, can be found in the config file, or
  will be taken from the super block on the first component-device
  listed on the command line."

What is an "identity" or a "uuid"?  Does that mean "/dev/md0"?

Thanks,
Dave

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