This patch configures the dm_task to use the
DM_UDEV_DISABLE_LIBRARY_FALLBACK udev flag to prevent calls to
dm_mknodes() from using the library fallback code.
Another possible fix would be to obtain a different return code from
vgscan.c where it does not detect any VGs and then calls the mknode
path due to the argument passed to the cli
maxret = process_each_vg(cmd, argc, argv, NULL, NULL, 0, 0, NULL,
&_vgscan_single);
/* at this point, this could return some indication if vgs were found
such that we could skip the vgmknodes() if no vgs were found */
if (arg_is_set(cmd, mknodes_ARG)) {
ret = vgmknodes(cmd, argc, argv);
if (ret > maxret)
maxret = ret;
}
** Patch added: "disable-library-fallback-in-vgscan-mknodes.patch"
https://bugs.launchpad.net/ubuntu/+source/lvm2/+bug/1874501/+attachment/5362656/+files/disable-library-fallback-in-vgscan-mknodes.patch
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https://bugs.launchpad.net/bugs/1874501
Title:
vgscan --mknodes creates block device multipath nodes in /dev/mapper
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