[CentOS] Moving from mdadm raid 0 to single disk

On 1/11/22 8:50 PM, Alexandre Leonenko wrote:
> Thanks,
> 
> That's what I'll probably be doing then.

Great. Don't miss Jonathan's answers. His are very instructive and with 
deep insights, as always.

Valeri

> 
> Alex
> ________________________________
> From: CentOS <centos-bounces at centos.org> on behalf of Valeri Galtsev <galtsev at kicp.uchicago.edu>
> Sent: Tuesday, January 11, 2022 5:21 PM
> To: centos at centos.org <centos at centos.org>
> Subject: Re: [CentOS] Moving from mdadm raid 0 to single disk
> 
> 
> 
> On 1/11/22 8:11 PM, Alexandre Leonenko wrote:
>> Hey all,
>>
>> Hopefully a quick question. I'm going to move the filesystem of a raid 0 mdadm to a single disk.
>> The filesystem is just a data drive, can I just dd if=/dev/md0 of=/dev/sdc ?
>> Or should I rather rsync the files directly?
> 
> I would [partition disk; make new filesystem, mount, then] use rsync.
> You avoid copying nuisances if there are any on old filesystem. You
> avoid the need to resize partition on new disk, and expand filesystem.
> You avoid waste of time copying empty space. You can have different
> disklabel (it old was MSDOS and you want GPT). And few other things.
> 
> I hope, thins helps.
> 
> Valeri
> 
>>
>> Regards,
>> Alex
>>
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> 
> --
> ++++++++++++++++++++++++++++++++++++++++
> Valeri Galtsev
> Sr System Administrator
> Department of Astronomy and Astrophysics
> Kavli Institute for Cosmological Physics
> University of Chicago
> Phone: 773-702-4247
> ++++++++++++++++++++++++++++++++++++++++
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-- 
++++++++++++++++++++++++++++++++++++++++
Valeri Galtsev
Sr System Administrator
Department of Astronomy and Astrophysics
Kavli Institute for Cosmological Physics
University of Chicago
Phone: 773-702-4247
++++++++++++++++++++++++++++++++++++++++