[linux-lvm] liblvm IOCTL/sysfs interface

[Larry Dickson]

Location as well as size is given by

lvdisplay --maps

Larry Dickson
Cutting Edge Networked Storage

On 3/19/09, Bryn M. Reeves <bmr at redhat.com> wrote:
>
> On Thu, 2009-03-19 at 17:01 +0530, Sandeep K Sinha wrote:
> > So, I should see the information like.
> >
> > lvol0
> > vg
> > target1 - /dev/sda5 ----  0 -- 10000 ( BEGIN  -- Length )
> > target2 - /dev/sda6 ----  10001 -- 4000
>
> dmsetup table
>
> >
> > We do maintain these informations inside the kernel, We should atleast
> > have an ioctl or sysfs based interface to extract
> > these information.
> >
> > Liblvm is under development, won't it be of a good use to provide such
> > a functionality.
>
> This is a lower level than liblvm targets (liblvm will work in terms of
> "LVM level" objects; pvs, vgs, lvs). The functionality to observe and
> manipulate the targets used by a specific LVM device is already provided
> by libdevmapper and the dmsetup tool.
>
> Regards,
> Bryn.
>
>
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>
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