On Tue, 4 Apr 2017 14:23:52 +0200 François Patte francois.patte@mi.parisdescartes.fr wrote:
What is the meaning of these error/warning messages (f25) and how to correct the config to get rid of them:
-- LVM Daemon lvmetad returned error 104: 1 Time(s) WARNING: Failed to connect to lvmetad. Falling back to device scanning.: 2 Time(s) WARNING: lvmetad is being updated, retrying (setup) for 10 more seconds.: 1 Time(s)
man lvmetad and it will explain how lvmetad works, and why these messages are being generated, and what they mean.
-- systemd Failed unmounting /var.: 1 Time(s) Requested transaction contradicts existing jobs: Transaction is destructive.: 1 Time(s)
lvm2-lvmetad.socket: Failed to queue service startup job (Maybe the service file is missing or not a non-template unit?): Transaction is destructive.: 1 Time(s) lvm2-lvmetad.socket: Unit entered failed state.: 1 Time(s)
What does mean "Transaction is destructive"?
My guess is that, if it runs, information will be lost from the system, or process sequence will be broken.
The systemd message seems pretty clear in that regard; there are jobs running that are using /var. If it wasn't you that was trying to umount /var, then this seems like a system error, as the system shouldn't be trying to umount /var when jobs are running, except maybe at shutdown.
Perhaps someone more knowledgeable can explain it better.