On 6/25/23 18:43, Demi Marie Obenour wrote:
On Sun, Jun 25, 2023 at 06:33:33PM +0200, Milan Broz wrote:
...
BTW we use exactly this scenario in cryptsetup for years with existing flags
(DM_UDEV_DISABLE_SUBSYSTEM_RULES_FLAG | DM_UDEV_DISABLE_DISK_RULES_FLAG
DM_UDEV_DISABLE_OTHER_RULES_FLAG) - just rules are ignored while uevent is still
sent.
Anyway, not sure we need another way to disable it; I just asked do you need it.
How can one set these flags using the raw kernel ioctls? The code I am
working on does not use libdevmapper at all and just uses the kernel API
directly.
IIRC you need to set cookie (kernel DM_COOKIE env), then default udev dm.rules decode
the flags from it.
(It is libdevmapper internal magic for me, the design is kind of complicated, but works.)
Better ask on LVM list (but the udev DM rules are pretty well inline documented).
Milan
--
dm-devel mailing list
dm-devel@xxxxxxxxxx
https://listman.redhat.com/mailman/listinfo/dm-devel
