[dm-devel] [PATCH 00/10] fixes for kpartx -d

[Martin Wilck]

On Fri, 2017-05-05 at 23:18 +0100, Alasdair G Kergon wrote:
> On Sat, May 06, 2017 at 12:05:49AM +0200, Martin Wilck wrote:
> >   3) kpartx should only delete "partitions", which are single-
> > target
> >      linear mappings into a block device. Other maps should not be
> > touched.
> 
> The prefix on the dm device's uuid should guarantee this: all devices
> kpartx creates should have the same initial characters (a
> not-quite-standard form "part" IIRC instead of "KPARTX-") and any
> devices without those initial characters must be ignored.

This works only for partitions on DM devices, not e.g. for loop
devices. These devices obviously have no DM UUID; and thus kpartx also
doesn't set an UUID for the partition devices it creates.
That's the main point of this series.

Martin

-- 
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