Since a few weeks ago, i am unable to backup my mac using time machine. It finds my backup drive, but each time i get a message that reads : failed to create a local snapshot.
I have already reinstalled a fresh installation using the apple recovery utility, and also tried to use a different backup drive. Note that i did not try to erase my data yet.
Edit: I wanted to point out the fact that this issue is impacting two macbook at this time, while six others are being backed up fine, using the same release and the same backup disc.
Using this command
sudo tmutil listlocalsnapshots /, I get this output:
Snapshots for volume group containing disk /: com.apple.TimeMachine.2020-06-18-194222.local com.apple.TimeMachine.2020-06-18-203811.local com.apple.TimeMachine.2020-06-18-213808.local com.apple.TimeMachine.2020-06-18-223858.local com.apple.TimeMachine.2020-06-18-233809.local com.apple.TimeMachine.2020-06-19-004440.local com.apple.TimeMachine.2020-06-19-014255.local com.apple.TimeMachine.2020-06-19-024125.local com.apple.TimeMachine.2020-06-19-033808.local com.apple.TimeMachine.2020-06-19-043810.local com.apple.TimeMachine.2020-06-19-053809.local com.apple.TimeMachine.2020-06-19-064356.local com.apple.TimeMachine.2020-06-19-083809.local com.apple.TimeMachine.2020-06-19-095017.local com.apple.TimeMachine.2020-06-19-104256.local
So, snapshots are indeed created despite time-machine's error message.