Re: [linux-lvm] Safety of DM_DISABLE_UDEV=1 and --noudevsync

2022-04-04 Thread Zdenek Kabelac

Dne 02. 04. 22 v 1:19 Demi Marie Obenour napsal(a):

Under what circumstances are DM_DISABLE_UDEV=1 and --noudevsync safe?
In Qubes OS, for example, I am considering using one or both of these,
but only for operations performed by qubesd.  systemd-udevd will still
be running, but it will be told to create no symlinks for the devices
these commands create or destroy.  systemd-udevd will still be in charge
of other devices, however, and other lvm2 commands may run that use
neither of these.


This env variable is not meant to be use on system with running udev.

So it's never safe - and it's only purpose is to be able to make some progress 
in some critical system condition.


Regards

Zdenek

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[linux-lvm] Safety of DM_DISABLE_UDEV=1 and --noudevsync

2022-04-01 Thread Demi Marie Obenour
Under what circumstances are DM_DISABLE_UDEV=1 and --noudevsync safe?
In Qubes OS, for example, I am considering using one or both of these,
but only for operations performed by qubesd.  systemd-udevd will still
be running, but it will be told to create no symlinks for the devices
these commands create or destroy.  systemd-udevd will still be in charge
of other devices, however, and other lvm2 commands may run that use
neither of these.
-- 
Sincerely,
Demi Marie Obenour (she/her/hers)
Invisible Things Lab


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