Re: Need to move RAID1 with mounted partition

[Leslie Rhorer <lesrhorer@att.net>]

On 4/20/2022 7:07 AM, Pascal Hambourg wrote:
> Le 20/04/2022 à 13:08, Andy Smith wrote:
>>
>> On Wed, Apr 20, 2022 at 03:40:12AM -0500, Leslie Rhorer wrote:
>>> The third partition on each drive is assigned as swap, and of
>>> course it was easy to resize those partitions, leaving an
>>> additional 512MB between the second and third partitions on each
>>> drive.  All I need to do is move the second partition on each
>>> drive up by 512MB.
>>
>> I'd be tempted to just make these two new 512M spaces into new
>> partitions for a RAID-1 and move your /boot to that, abandoning the
>> RAID-1 you have for the /boot that is using the partitions at the
>> start of the disk.
> 
> I agree, unless the BIOS cannot read sectors at that offset.
> 
> Or you could create a RAID10 array with the 4 partitions if they have 
> similar sizes.

	They don't. 'Not even close.
> 
> Or you could move /boot back into the / filesystem.

	I would rather not.
> 
> In either case, the BIOS restriction applies and you may need to 
> reinstall the boot loader on both drives.

	I did so just for safety.  Whether it was actually needed or not, who 
knows?

> Or you could try to reduce the required space in /boot :
> - remove old kernels

I did that.  It wasn't enough.  Eventually I just moved the kernel files 
and created symlinks before completing the upgrade on one system.  The 
other got the resize treatment.

> - reduce initramfs size with MODULES=dep instead of MODULES=most in 
> /etc/initramfs-tools/initramfs.conf

	I didn't try that.  It probably would have worked.

> - remove plymouth if installed

	Nope.