Mount Logical (ext2fs) Partitions?

[Walter Hurry]

On Sat, 26 Jan 2013 09:24:06 -0800, Carl Johnson wrote:

> Walter Hurry <walterhurry at gmail.com> writes:
> 
>> On Fri, 25 Jan 2013 21:07:59 -0800, Carl Johnson wrote:
>>
>>> There is a package called 'linuxfdisk' that is just a FreeBSD
>>> implementation of the linux fdisk and will show you what the FreeBSD
>>> partitions/slices are.  You can also use gpart in the base system to
>>> get the same information.  The command 'gpart list ada0' will show the
>>> primary partitions, and the command 'gpart list ada0s4' should show
>>> the logical partitions inside of the extended partition.  You can also
>>> use 'file -s' and possibly do read-only mounts to see exactly what
>>> they contain.  The names will probably map out like linux, but the
>>> 'sda*' will be changed to 'ada0s*'.
>>
>> Thanks for the pointers. Here is the relevant part of the output from
>> 'gpart list ada0s4':
>>
>> 4. Name: ada0s8
>>    Mediasize: 41943040000 (39G)
>>    Sectorsize: 512 Stripesize: 0 Stripeoffset: 162529280 Mode: r0w0e0
>>    rawtype: 131 length: 41943040000 offset: 46143188992 type:
>>    linux-data index: 1430498 end: 172043415 start: 90121368
>>
>> So I put into my /etc/fstab:
>>
>> /dev/ada0s8     /u01                    ext2fs          ro,noauto 0 0
>>
>> But when I issue 'sudo mount /u01' I get:
>>
>> mount: /dev/ada0s8: Invalid argument
>>
>>
>> What am I doing wrong?
> 
> I don't see anything wrong there.  I use labels when possible, but that
> doesn't really change anything.  Have you tried using 'file -s
> /dev/ada0s8' to see what the kernel thinks it is?

Sorry, I didn't take advantage of that earlier piece of advice. Here it
is:

$ file -s /dev/ada0s8 /dev/ada0s8: no read permission
$ ls -l /dev/ada0s8 crw-r-----  1 root  operator    0, 102 26 Jan 18:09 /
dev/ada0s8
$ sudo file -s /dev/ada0s8 /dev/ada0s8: Linux rev 1.0 ext4 filesystem 
data,UUID=d93b0074-04ca-4e5d-bee9-dfd85bce0b14, volume name 
"u01" (extents) (large files) (huge files)
$

So it's my stupid mistake. I could have sworn it was ext2, but it was 
ext4. Sorry for all the noise! However, I'm glad you have helped, and 
that I have learned a little bit about Linux partitions as FreeeBSD 
slices.

It was empty, so I just reformatted it as ext2, and hey presto; all is 
right with the world.

Thanks again.