Am 05.01.22 um 02:05 schrieb zxcs:
Any suggestion how can we change the time and the cephfs not lost connect? One way is before change time, umount ceph , then change time, and mount ceph again, but this is seems a little complex.
Most software and cryptographic routines assume that time moves forward only. If you set the time backwards the situation is not determined and can lead to all possible kind of bugs.
E.g. if the Dovecot IMAP server detects a time jump backwards it just kills itself.
If you need to adjust the system time with a step backwards you need to restart nearly all services, a reboot may be even easier.
TL;DR: Do not set the time backwards on a running system. Have ntpd or chrony adjust it slowly (by having the system clock running slower than real time).
BTW: Changing the timezone is not the same as jumping backwards in time. Regards -- Robert Sander Heinlein Consulting GmbH Schwedter Str. 8/9b, 10119 Berlin http://www.heinlein-support.de Tel: 030 / 405051-43 Fax: 030 / 405051-19 Zwangsangaben lt. §35a GmbHG: HRB 220009 B / Amtsgericht Berlin-Charlottenburg, Geschäftsführer: Peer Heinlein -- Sitz: Berlin _______________________________________________ ceph-users mailing list -- ceph-users@xxxxxxx To unsubscribe send an email to ceph-users-leave@xxxxxxx
