Comment 5 for bug 282189
Revision history for this message
| Alasdair G. Kergon (agk2) wrote Re: [Bug 282189] Re: "dmsetup deps" does not accurately report LVM dependencies, can cause boot failure | #5 |
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On Wed, Dec 17, 2008 at 03:27:39PM -0000, Tony Lewis wrote:
> Alasdair G. Kergon wrote:
> > Surely that's it working as designed?
> > dmsetup tells you about mapped devices available in the running kernel.
> I don't think so. "dmsetup deps" indicates the devices that your mapped
> device depends on.
dmsetup has no access to the userspace LVM metadata where the information you
appear to be seeking is stored. It is simply a convenient command-line
interface to the libdevmapper library that is a wrapper around the
device-mapper ioctls.
Use a query tool like 'pvs' to find out what PVs belong to the VG containing a
particular LV.
Alasdair
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