Does ROS currently support Ext2?

[TwoTailedFox]

Just a quick question.

Does ROS Support the Ext2 file system for read/write operations?
-- 
"I had a handle on life, but then it broke"

[James Tabor]

TwoTailedFox wrote:
> Just a quick question.
>
> Does ROS Support the Ext2 file system for read/write operations?

Yes and No.

Look at,
http://svn.reactos.com/viewcvs/branches/ext2/

We need to merge ext2 patch to head. There is a bug with copying large files.

Search the dev mail list for "[ros-dev] Ext2 Branch Tests" 02/05/05.

"Only 4194304 bytes copied to drive C:. Does that number look anything familiar
to anyone? How about 400000 Hex."

That is the only bug I could find with my tests.

Thanks,
James

[TwoTailedFox]

*nods*

If I understand the Ext2/Ext3 relationship correctly, you can mount an
Ext3 filesystem as Ext2, it just won't have a Journal... it should
suffice as temporary Ext3 support, until proper Journal support is
written.

I've another mailing list Q&A regarding a system freezing using Ext2,
and large file copying taking place. It pointed to a problem in the
IDE Interface that occurs when large amounts of data flow through it.
So, it could be a data bottleneck that causes the freezing to occur.

On 6/4/05, James Tabor
[e-mail] wrote:
> TwoTailedFox wrote:
> > Just a quick question.
> >
> > Does ROS Support the Ext2 file system for read/write operations?
>
> Yes and No.
>
> Look at,
> http://svn.reactos.com/viewcvs/branches/ext2/
>
> We need to merge ext2 patch to head. There is a bug with copying large files.
>
> Search the dev mail list for "[ros-dev] Ext2 Branch Tests" 02/05/05.
>
> "Only 4194304 bytes copied to drive C:. Does that number look anything familiar
> to anyone? How about 400000 Hex."
>
> That is the only bug I could find with my tests.
>
> Thanks,
> James
-- 
"I had a handle on life, but then it broke"

[Andrew Smith]

Hello, I'm not a developer (at least not on ROS), but I have been
reading the list for some time now, but this just popped up at me...

On 04/06/05, James Tabor
[e-mail] wrote:
> "Only 4194304 bytes copied to drive C:. Does that number look anything familiar
> to anyone? How about 400000 Hex."
>
> That is the only bug I could find with my tests.

Is this a bug with the ext2? because that's 4GB which is the limit a
FAT32 drive file can be, so if a file is copied over that is larger
than 4GB it will be cut off at that point anyway.

So if that is the only bug then there aren't any bugs really. Maybe a
warning should be thrown if a file > 4GB is attempted to be
copied/moved to a FAT drive (I know windows does this, but the error
it reports is incorrect. I recently tried coping some 4.3GB files from
an NTFS partition to a FAT partition and windows reported that the FAT
drive "Doesn't have enough free space" despite the fact there was
about 125GB free).
-- 
Andy Smith - Def since birth

[TwoTailedFox]

Actually, that 4194304 bytes is 4MB (~4 Million Bytes), not 4GB. ^^

On 6/5/05, Andrew Smith [e-mail] wrote:
> Hello, I'm not a developer (at least not on ROS), but I have been
> reading the list for some time now, but this just popped up at me...
>
> On 04/06/05, James Tabor
> [e-mail] wrote:
> > "Only 4194304 bytes copied to drive C:. Does that number look anything familiar
> > to anyone? How about 400000 Hex."
> >
> > That is the only bug I could find with my tests.
>
> Is this a bug with the ext2? because that's 4GB which is the limit a
> FAT32 drive file can be, so if a file is copied over that is larger
> than 4GB it will be cut off at that point anyway.
>
> So if that is the only bug then there aren't any bugs really. Maybe a
> warning should be thrown if a file > 4GB is attempted to be
> copied/moved to a FAT drive (I know windows does this, but the error
> it reports is incorrect. I recently tried coping some 4.3GB files from
> an NTFS partition to a FAT partition and windows reported that the FAT
> drive "Doesn't have enough free space" despite the fact there was
> about 125GB free).
>
> --
> Andy Smith - Def since birth
>
> Ros-dev mailing list
> [e-mail]
> http://reactos.com:8080/mailman/listinfo/ros-dev
-- 
"I had a handle on life, but then it broke"