Dne 03. 11. 24 v 23:43 Martin Wilck napsal(a):
When multipath reloads a device or fails or restores a path, the udev
rules disable LVM scanning, but since .DM_NOSCAN isn't set, blkid is
still run on the device. When multipath devices that are set to
queue_if_no_path lose all their paths at close to the same time, udev
Hi
There is worth to be mentioned - blkid has for a long time 'special' rule
-built-in for LVM (and some other devices i.e. crypt...)
So whenever lvm2 uses LVM-uuid-suffix with the '-suffix' in it's UUID -
it's a private DM device which is never even opened by blkid. We would like to
convert all remaining LV activations to use this logic for every 'private'
device - since this logic is 'persistent' and survive even complete removal
od udevdb. However it takes some time and also the backward compatibility is
complicating things a lot.
But all I say is - the relaing on any logic of the udev flags is always kind
of problematic - and lvm2 does not depend on this fragile flagging too much.
Regards
Zdenk
