Please How do I calculate the offset of a file within a ext3 partition

[Stephen Samuel]

What I'd note here is that the file has discontinuities, so this file
is probably not appropriate for doing suspends to swap.
At a quick guess, you probably need to either:
  1) set up a proper swap PARTITION.
(e.g. remove the current swap file, shrink the /var (or /, as the case
may be) partition by that much, and then use the newly freed space to
create a proper partition.)

I believe that you can use qtparted to do the work of shrinking the
partition for you.  You might want to download a live-CD linux (like
Knoppix, or the Ubuntu live CD)  so that you can do the resize without
having to worry about the partition being in use.

or
2) Find a program that will allow you to allocate a file as one
contiguous chunk (nothing off the top of my head). then allocate the
swap file using that,

On 7/23/07, Stephen Samuel <darkonc at gmail.com> wrote:
> What I'd note here is that the file has discontinuities, so this file
> is probably not appropriate for doing suspends to swap.
> At a quick guess, you probably need to either:
>    1) set up a proper swap PARTITION.
> (e.g. remove the current swap file, shrink the /var (or /, as the case
> may be) partition by that much, and then use the newly freed space to
> create a proper partition.)
>
> I believe that you can use qtparted to do the work of shrinking the
> partition for you.  You might want to download a live-CD linux (like
> Knoppix, or the Ubuntu live CD)  so that you can do the resize without
> having to worry about the partition being in use.
>
> or
> 2) Find a program that will allow you to allocate a file as one
> contiguous chunk (nothing off the top of my head). then allocate the
> swap file using that,
>
> On 7/23/07, Theodore Tso <tytso at mit.edu> wrote:
> > On Mon, Jul 23, 2007 at 02:17:40PM -0500, William Tambe wrote:
> > > Thank you for warning me, I am already using a specific file as my swap,
> > > so I had already done mkswap on it.
> > > I only wanted to be able suspend on it and resume from it using swsusp.
> > > To do that I needed to give to the kernel as arguments the following:
> > > resume=<swap_file_partition> resume_offset=<swap_file_header_offset>
> >
> > If you have the filefrag program, you can just do
> >
> > # filefrag -v /var/cache/swap  | head
> > Checking /var/cache/swap
> > Filesystem type is: ef53
> > Filesystem cylinder groups is approximately 578
> > Blocksize of file /var/cache/swap is 4096
> > File size of /var/cache/swap is 1073741824 (262144 blocks)
> > First block: 13778944
> > Last block: 14406757
> > Discontinuity: Block 6137 is at 13785112 (was 13785087)
> > Discontinuity: Block 12251 is at 13791992 (was 13791231)
> >
> > So the first block is 13778944.  So the byte offset is 4096*13778944
> > or 56438554624.
> >
> >
> >                                         - Ted
> >
> > _______________________________________________
> > Ext3-users mailing list
> > Ext3-users at redhat.com
> > https://www.redhat.com/mailman/listinfo/ext3-users
> >
>
>
> --
> Stephen Samuel http://www.bcgreen.com
> 778-861-7641
>


-- 
Stephen Samuel http://www.bcgreen.com
778-861-7641