Ubuntu
devicekit-disks package

  1. Bug #458529
  2. Comment #14

Comment 14 for bug 458529

Revision history for this message
In , Martin Pitt (pitti) wrote :

> Upstream lvm2 fixed that a while ago in its udev rules:
> http://sourceware.org/ml/lvm2-cvs/2009-08/msg00018.html

> +ENV{DM_LV_NAME}=="?*_mlog", GOTO="lvm_end"
> +ENV{DM_LV_NAME}=="?*_mimage_[0-9]*", GOTO="lvm_end"

FYI, I just added some basic LVM test cases (single LV/no RAID, and single LV/RAID-1) to the test suite (see bug 24446). This checks the "presentation hide" flag as well, so without the patch above (or the equivalent that was applied in Ubuntu), it fails:

======================================================================
FAIL: LVM: Single LV, RAID-1
----------------------------------------------------------------------
Traceback (most recent call last):
  File "/home/martin/dk-disks-test.py", line 1032, in test_single_lv_raid
    o != real_lv_obj)
AssertionError: dbus.Boolean(False, variant_level=1) != True

(that's the DevicePresentationHide property).

So regardless how distros ship their udev rules right now, they can use this to test that they have a correct setup which probes the LVs and hides the shadow image LVs.