From: Martin Wilck <mwilck@suse.com>
To: Alasdair G Kergon <agk@redhat.com>
Cc: dm-devel@redhat.com
Subject: Re: [PATCH 00/10] fixes for kpartx -d
Date: Sat, 06 May 2017 00:30:38 +0200 [thread overview]
Message-ID: <1494023438.4926.2.camel@suse.com> (raw)
In-Reply-To: <20170505221819.GG11857@agk-dp.fab.redhat.com>
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
--
Dr. Martin Wilck <mwilck@suse.com>, Tel. +49 (0)911 74053 2107
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next prev parent reply other threads:[~2017-05-05 22:30 UTC|newest]
Thread overview: 22+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-05-05 22:05 [PATCH 00/10] fixes for kpartx -d Martin Wilck
2017-05-05 22:05 ` [PATCH 01/10] kpartx: test-kpartx: new unit test program Martin Wilck
2017-05-05 22:05 ` [PATCH 02/10] kpartx: avoid ioctl error for loop devices Martin Wilck
2017-05-08 20:46 ` Benjamin Marzinski
2017-05-11 9:33 ` Martin Wilck
2017-05-05 22:05 ` [PATCH 03/10] kpartx: remove is_loop_device Martin Wilck
2017-05-05 22:05 ` [PATCH 04/10] kpartx: dm_remove_partmaps: support non-dm devices Martin Wilck
2017-05-05 22:05 ` [PATCH 05/10] kpartx: dm_devn: return error for non-existent device Martin Wilck
2017-05-05 22:05 ` [PATCH 06/10] kpartx: don't treat multi-linear mappings as partitions Martin Wilck
2017-05-05 22:05 ` [PATCH 07/10] libmultipath: " Martin Wilck
2017-05-05 22:05 ` [PATCH 08/10] kpartx: use partition UUID for non-DM devices Martin Wilck
2017-05-05 22:30 ` Alasdair G Kergon
2017-05-08 8:01 ` Martin Wilck
2017-05-05 22:05 ` [PATCH 09/10] kpartx: use absolute path for regular files Martin Wilck
2017-05-05 22:05 ` [PATCH 10/10] kpartx: find_loop_by_file: use sysfs Martin Wilck
2017-05-05 22:18 ` [PATCH 00/10] fixes for kpartx -d Alasdair G Kergon
2017-05-05 22:30 ` Martin Wilck [this message]
2017-05-05 22:36 ` Martin Wilck
2017-05-08 6:33 ` Hannes Reinecke
2017-05-08 7:47 ` Martin Wilck
2017-05-08 7:54 ` Martin Wilck
2017-05-08 22:21 ` Benjamin Marzinski
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