Re: newfs TRIM flag device support

On Feb 17, 2024, at 08:44, Mike Karels <[email protected]> wrote:

> On 17 Feb 2024, at 10:21, Ordinary Bit wrote:
> 
>> On Saturday, 17 February 2024 at 23:20, Mark Millard <[email protected]> wrote:
>> 
>>> On Feb 17, 2024, at 02:39, Ordinary Bit [email protected] wrote:
>>> . . . 
>>>> 
>>>> root@sd-ultra:~ # gpart show -p
>>>> => 63 124735425 mmcsd0 MBR (59G)
>>>> 63 1985 - free - (993K)
>>>> 2048 102400 mmcsd0s1 fat32lba [active] (50M)
>>>> 104448 10381312 mmcsd0s2 freebsd (5.0G)
>>>> 10485760 16777216 mmcsd0s3 freebsd (8.0G)
>>> 
>>> 
>>> An oddity just above is that mmcsd0s3 is not set to the
>>> type freebsd-ufs . But the oddity does not mess up the
>>> testing you were doing.
>>> 
>> 
>> Let me test this one with freebsd-ufs type because you're right it's only freebsd.
> 
> freebsd-ufs is a GPT type; this is MBR.  The ufs filesystem is presumably mmcsd0s3a.
> If the filesystem gets mounted, the partitioning is OK.
> 
> Mike
> 
>>>> 27262976 97472512 - free - (46G)
>>>> 
>>>> => 0 10381312 mmcsd0s2 BSD (5.0G)
>>>> 0 128 - free - (64K)
>>>> 128 10381184 mmcsd0s2a freebsd-ufs (4.9G)
>>>> . . .
> 

My splitting of the gpart output at the line I was interested in
may have left some confusion. So I'll quote the original full
output. I was not very explicit about the details of the oddities
involved before but will be so below.

QUOTE
root@sd-ultra:~ # gpart show -p
=>       63  124735425    mmcsd0  MBR  (59G)
        63       1985            - free -  (993K)
      2048     102400  mmcsd0s1  fat32lba  [active]  (50M)
    104448   10381312  mmcsd0s2  freebsd  (5.0G)
  10485760   16777216  mmcsd0s3  freebsd  (8.0G)
  27262976   97472512            - free -  (46G)

=>       0  10381312   mmcsd0s2  BSD  (5.0G)
        0       128             - free -  (64K)
      128  10381184  mmcsd0s2a  freebsd-ufs  (4.9G)
END QUOTE

First note that mmcsd0s2a says freebsd-ufs (but is
inside a BSD). That is what I consider normal for MBR
partitions that contain UFS file systems.

Next note that there was no "mmcsd0s3  BSD" shown.
Nor was there a "mmcsd0s3a  freebsd-ufs" shown.
"mmcsd0s3  freebsd" shows no evidence of any MBR/BSD
substructure. (But it was mountable as a UFS file
system after the newfs that was done on mmcsd0s3 .)

None of this messed up the testing that was being
done.

===
Mark Millard
marklmi at yahoo.com