> On Fri, 14 Nov 2003, Simon Matter wrote: > >> Would be nice to have something like a 'cyrus_freeze' command. Maybe >> there >> is a way to do this with SIGSTOP/SIGCONT? > > At this point, you might as well just kill the server, since you won't be > able to do almost anything for the duration of the snapshot.
IIRC taking a snapshot with LVM/XFS takes just a few seconds. I guess everything should continue after the snapshot. What do the cyrus processes do if they receive SIGSTOP? Will they stop immediately or will they not stop at all? I mean, if a process receives SIGSTOP while it writes to a file, will the write finish before the process stops? Simon
