Re: Copying Data Blocks

["Rohit Sharma" <imreckless@gmail.com>]

On Tue, Jan 6, 2009 at 7:42 PM, rishi agrawal <postrishi@gmail.com> wrote:
> yes i suppose the donor inode is known
> moreover the receiver inode's number is also known
>
> On Tue, Jan 6, 2009 at 6:54 PM, Manish Katiyar <mkatiyar@gmail.com> wrote:
>>
>> On Tue, Jan 6, 2009 at 4:06 PM, Rohit Sharma <imreckless@gmail.com> wrote:
>> > I want to read data blocks from one inode
>> > and copy it to other inode.
>> >
>> > I mean to copy data from data blocks associated with one inode
>> > to the data blocks associated with other inode.
>>
>> Copying 4K chunk of data itself is a costly operation. and depending

Yes its a costly operation, but if this can be done then
we can definitely copy n blocks at a time.

>> on the size of your donor inode this can be huge . Why do you want to
>> do that ? Do you know the inode of the donor inode ?

For physically relocating a file from one disk to other.

Yes Manish, i know the donor inode and i will create the reciever inode.

Can we do that in kernel space.?
>>
>> thanks -
>> Manish
>> >
>> > Is that possible in kernel space.?
>> > --
>> > To unsubscribe from this list: send the line "unsubscribe linux-ext4" in
>> > the body of a message to majordomo@vger.kernel.org
>> > More majordomo info at  http://vger.kernel.org/majordomo-info.html
>> >
>> --
>> To unsubscribe from this list: send the line "unsubscribe linux-ext4" in
>> the body of a message to majordomo@vger.kernel.org
>> More majordomo info at  http://vger.kernel.org/majordomo-info.html
>
>
>
> --
> Regards,
> Rishi B. Agrawal
>
>