Re: How to rename MD device (e.g. md3 -> md2)?

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"Dan Williams" <dan.j.williams@xxxxxxxxx> writes:

> On Mon, Apr 7, 2008 at 8:48 AM, Zlatko Calusic <zlatko.calusic@xxxxxxxx> wrote:
>> Hello list!
>>
>>  Does anybody know what would be the fastest way to rename MD device
>>  (without recreating/resyncing)? I have md0, md1 and md3 in system (don't
>>  ask :)), and obviously it would look slightly nicer if that md3 was
>>  called md2 instead, like I have on other machines (with all the same
>>  setup, except this small difference). Is it possible?
>>
>
> Sure, you should just be able to do:
>
> mdadm --stop /dev/md3
> mdadm --assemble /dev/md2 <insert component devices here>

So simple... who would've thought of that. :) Thank you!

Although, the recipe will have to wait for another occasion to prove
itself, my new md2 is in the middle of resyncing process as I write
this. But, I don't mind. While I was copying the filesystem to the new
device, I noticed that it was heavily fragmented in places (transfer
speed was dropping from typical 40+ MB/s to below 10 MB/s - all very big
files!), so I'm sure copying was good for it. :)

Regards,
-- 
Zlatko
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