Re: Rereading disk geometry without reboot

[Randy.Dunlap]

Jan Engelhardt wrote:
> > I am using linux kernel 2.6.9 on a san.  I have file systems on
>
>
> (What's a SAN?)
>
>
> > non-partitioned disks.  I can resize the disk on the SAN, reboot and grow
> > the XFS file system those disks.  What I would like to avoid rebooting or
> > even unmounting the filesystem if possible.
> >
> > Is there any way to get the kernel to re-read the disk geometry and change
> > the information it holds without rebooting or reloading the module (which is
> > as bad as a reboot in my case)?
>
>
> The `fdisk` tool will spit out an ioctl() to make the kernel reread the
> partition table (on normal computers, don't know about or what SAN). No need to
> reboot there at least.

There's 'blockdev --rereadpt' also, but neither of these work
on a mounted filesystem afaik.

--
~Randy
-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/