Mount Ext3 under DragonFlyBSD

Fri Apr 27 23:29:21 PDT 2012

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On 04/27/2012 09:35 PM, v_2e at ukr.net wrote:
>    Hello!
>    So can anybody give me some advice on this? Should I really delete
> the existing file system and create a new one with the 'sparse_super'
> flag off?
>
>    Thanks.
>      Vladimir
>
> On Fri, 6 Apr 2012 20:36:15 +0300
> v_2e at ukr.net wrote:
>
>>    Hello!
>>    I'm new (well, actually, very very very new) to DragonFlyBSD and
>> currently doing my first steps with it.  I have Ext2 and Ext3
>> partitions on my HDD (created under GNU/Linux) and I cannot use them
>> under DragonFlyBSD. The problem is that when I try to mount any of
>> them, I get the following error message:
>>
>>      # mount /dev/ad4s3 /mnt/data/
>>      mount: /dev/ad4s3 on /mnt/data: incorrect super block
>>
>> Or if I state the FS type explicitly, I get this:
>>
>>      # mount -t ext2fs /dev/ad4s3 /mnt/data/
>>      WARNING: R/W mount of #ad/0x40002 denied due to unsupported
>> optional features
>>      ext2fs: /dev/ad4s3: Invalid argument
>>
>>    The only mode I can mount these file systems in is read-only mode.
>> However, the file systems are not usable in this mode either, because
>> I can only list the root catalog of the corresponding FS. Any attempt
>> to list other catalogs or read some files leads to the following
>> error message on the screen:
>>
>> and a system reboot.
>>
>> I searched over Internet for a similar issue and found only one sane
>> article mentioning this problem
>> ( http://onlamp.com/pub/a/bsd/2000/11/16/Big_Scary_Daemons.html ). Its
>> author tells that the root of the problem is the 'sparse_super' flag
>> set on the Ext2 file system and suggest to turn this flag off:
>>
>>      tune2fs -s off /dev/sda3
>>
>> I tried it under my GNU/Linux system, but it says only:
>>
>>      Clearing filesystem feature 'sparse_super' not supported.
>>
>> and does not do the job.
>>    So now I just do not know what to do. How cat I use my existing
>> Ext2/Ext3 file systems on DragonFlyBSD? Any suggestions?
>>
>>    Thanks.
>>      Vladimir
>>
>> -----
>>   <v_2e at ukr.net>
>
> -----
>   <v_2e at ukr.net>
>
   It may need e2fsprogs?  Have you tried "e2fsprogs" from pkgsrc?  "It  
provides the filesystem utilities for use with the ext2 filesystem. 
<http://e2fsprogs.sourceforge.net/ext2.html> It also supports the ext3 
and ext4   filesystems."
     http://e2fsprogs.sourceforge.net/

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    On 04/27/2012 09:35 PM, v_2e at ukr.net wrote:
    <blockquote cite="mid:20120428073511.d58c14d7.v_2e at ukr.net"
      type="cite">
      <pre wrap="">  Hello!
  So can anybody give me some advice on this? Should I really delete
the existing file system and create a new one with the 'sparse_super'
flag off?

  Thanks.
    Vladimir

On Fri, 6 Apr 2012 20:36:15 +0300
v_2e at ukr.net wrote:

</pre>
      <blockquote type="cite">
        <pre wrap="">  Hello!
  I'm new (well, actually, very very very new) to DragonFlyBSD and
currently doing my first steps with it.  I have Ext2 and Ext3
partitions on my HDD (created under GNU/Linux) and I cannot use them
under DragonFlyBSD. The problem is that when I try to mount any of
them, I get the following error message:

    # mount /dev/ad4s3 /mnt/data/
    mount: /dev/ad4s3 on /mnt/data: incorrect super block

Or if I state the FS type explicitly, I get this:

    # mount -t ext2fs /dev/ad4s3 /mnt/data/
    WARNING: R/W mount of #ad/0x40002 denied due to unsupported
optional features 
    ext2fs: /dev/ad4s3: Invalid argument

  The only mode I can mount these file systems in is read-only mode.
However, the file systems are not usable in this mode either, because
I can only list the root catalog of the corresponding FS. Any attempt
to list other catalogs or read some files leads to the following
error message on the screen:

and a system reboot.

I searched over Internet for a similar issue and found only one sane
article mentioning this problem
( http://onlamp.com/pub/a/bsd/2000/11/16/Big_Scary_Daemons.html ). Its
author tells that the root of the problem is the 'sparse_super' flag
set on the Ext2 file system and suggest to turn this flag off:

    tune2fs -s off /dev/sda3

I tried it under my GNU/Linux system, but it says only:

    Clearing filesystem feature 'sparse_super' not supported.

and does not do the job.
  So now I just do not know what to do. How cat I use my existing
Ext2/Ext3 file systems on DragonFlyBSD? Any suggestions?

  Thanks.
    Vladimir

----- 
 <v_2e at ukr.net>
</pre>
      </blockquote>
      <pre wrap="">

----- 
 <v_2e at ukr.net>

</pre>
    </blockquote>
      It may need e2fsprogs?  Have you tried "e2fsprogs" from pkgsrc? 
    "It  provides the filesystem utilities for use with the <a
      href="http://e2fsprogs.sourceforge.net/ext2.html">ext2 filesystem.</a>
    It also supports the ext3 and ext4   filesystems."<br>
        http://e2fsprogs.sourceforge.net/
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