Re: Same size drive has less usable space

[Luciano ES <lucmove@gmail.com>]

On Thu, 20 Dec 2018 10:10:42 -0600, Eric Sandeen wrote:

> Well, you have larger inodes on xxbkp for starters.

I can't make smaller inodes on this disk.

"specified blocksize 2048 is less than device physical sector size 4096
switching to logical sector size 512"

another attempt:

"specified blocksize 2048 is less than device physical sector size 4096
switching to logical sector size 512
Minimum inode size for CRCs is 512 bytes"

So yes, it's the CRC feature.


On Thu, 20 Dec 2018 10:10:42 -0600, Eric Sandeen wrote:

> # mkfs.xfs -m crc=0,finobt=1 -i sparse=0 -n ftype=0

Your command line doesn't work. It says:

finobt not supported without CRC support

I have confirmed that disabling CRC allows me to have smaller inodes, 
but I wish I could keep that feature. It sounds like something I want 
to have, to improve reliability.

Is there another way?


On Thu, 20 Dec 2018 08:26:41 -0800, Darrick J. Wong wrote:

> Why not xfs_copy?

Good question. But then the copy would not have CRC enabled either 
because the original doesn't. 

Looks like I an going to have to commit to having CRC always on 
from now on. And I am going to lose about 7GB of space for that.

Is it worth it?


-- 
Luciano ES
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