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SubjectRe: updating the partition table of a busy drive
On Mon, Aug 26, 2002 at 04:02:38PM -0600, Andreas Dilger wrote:
> On Aug 27, 2002 00:52 +0300, Yedidyah Bar-David wrote:
> > Currently, any change to a partition table of a busy drive is
> > practically delayed to the next reboot. Even things trivial as
> > changing the type of an unmounted partition do not work, if
> > another partition on that drive is mounted (or swapped to, etc.).
> >
> > On a side note, about a year and a half ago, there was a thread
> > on lkml with the subject 'Partition IDs in the New World TM', in
> > which a 'parttab' file was mentioned. I grepped and STFWed a lot,
> > and could not find any relevant mention anywhere, besides this
> > thread. Is this parttab implemented? Documented? Perhaps under
> > a different name? Is this case it is quite hard to find
> > (google search for 'linux parttab' has 37 results, but for
> > e.g. 'linux partition table initrd' 11400 results).
>
> Please see partx (util-linux) and/or GNU parted for tools which can
> change partitions on mounted disks. I believe the kernel has supported
> this since 2.4.0, but not many tools do.

Thanks a lot! I am right off to adding a small note on my home
page for google searches to find. Tools help, but information
even more.
I tried partx and it works just fine. parted will probably be even
better, but is a bit more complicated (or so it seems).

>
> Cheers, Andreas
> --
> Andreas Dilger
> http://www-mddsp.enel.ucalgary.ca/People/adilger/
> http://sourceforge.net/projects/ext2resize/

Again, Thanks!

Didi

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