In article <4580053D.4050205@gmail.com>, haad  <haaaad@gmail.com> wrote:
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>Alexander V. Butenko wrote:
>> Hello,
>> 
>> Today i create a new disk with ext3 and was going to mount it readonly
>> on my netbsd installation.
>> 
>> Here is a problem:
>> 
>> # mount_ext2fs /dev/wd0g /mnt  
>> mount_ext2fs: /dev/wd0g on /mnt: incorrect super block
>> # mount_ext2fs /dev/wd0g /mnt -o ro
>> usage: mount_ext2fs [-o options] special node
>> # mount_ext2fs -o ro /dev/wd0g /mnt 
>> mount_ext2fs: /dev/wd0g on /mnt: incorrect super block
>> 
>As I know we support only ext2 not ext3.
>But you can write it :D.
>http://www.netbsd.org/contrib/projects.html#ext3fs
>> dmesg says: 
>> Ext2 fs: unsupported optional feature
>> Ext2 fs: unsupported optional feature
>> 
>> Partition was created in linux. 
>> 
>> # uname -a                                                            
>
>> NetBSD ds 4.0_BETA2 NetBSD 4.0_BETA2 (GENERIC.MPACPI) #0: Sun Dec 10
>> 06:56:24 UTC 2006
>>

Downgrade it to ext2 using tune2fs -O ^has_journal (after you've cleanly
unmounted it).

christos