Hot add not supported by version 1.x superblocks?

Hot add not supported by version 1.x superblocks?

[Sean Puttergill]

Hello Neil.

I have a RAID1 built using v1.2 superblocks.  I seem to not be able to hot add a spare drive to this array.
I get the error message:

"HOT_ADD may only be used with version-0 superblocks"

Does this really mean that hot add is not supported for arrays built with v1.x superblocks?
If so this seems like a big regression in functionality.  In this case, are there technical reasons why v1.x cannot support hot add?

I am using a stock 2.6.18 kernel with mdadm v2.5.4


Thanks,
Sean




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Re: Hot add not supported by version 1.x superblocks?

[Sean Puttergill]

False alarm.  My apologies.

There was a stale superblock on the disk I was trying to hot add as a spare.  Once I wiped the superblock it was successfully added to the array.
That being said, the error message issued wasn't exactly appropriate.


Regards,
Sean

----- Original Message ----
From: Sean Puttergill <puttergi@yahoo.ca>
To: neilb@suse.de
Cc: linux-raid@vger.kernel.org
Sent: Wednesday, January 31, 2007 10:58:23 AM
Subject: Hot add not supported by version 1.x superblocks?

Hello Neil.

I have a RAID1 built using v1.2 superblocks.  I seem to not be able to hot add a spare drive to this array.
I get the error message:

"HOT_ADD may only be used with version-0 superblocks"

Does this really mean that hot add is not supported for arrays built with v1.x superblocks?
If so this seems like a big regression in functionality.  In this case, are there technical reasons why v1.x cannot support hot add?

I am using a stock 2.6.18 kernel with mdadm v2.5.4


Thanks,
Sean




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