* Gnus and rsync @ 2010-10-20 22:48 Nuno J. Silva [not found] ` <87ocaetdmn.fsf@ucl.ac.uk> 0 siblings, 1 reply; 5+ messages in thread From: Nuno J. Silva @ 2010-10-20 22:48 UTC (permalink / raw) To: info-gnus-english So I've now hit the issue where I have two computers on which I want to keep gnus stuff on-sync. I've tried the simple solution: rsyncing the whole bunch of files (news, mail, .gnus.el, and some other gnus files. Unfortunately, this doesn't work as expected: in some mail folders the unread messages are months old, perhaps from the time the mail files were on the computer I want to sync to (or even before that - in a nutshell: my Gnus files have flied through several machines several times (but I had no trouble with that)). I plan to look at this deeply (like, seeing if the messages are actually there, if something differs from a plain tar+scp+untar, and some other forensics), but I'd like to know if anyone has already experienced anything like this. The backend possibly matters: it's nnmaildir. -- Nuno J. Silva gopher://sdf-eu.org/1/users/njsg ^ permalink raw reply [flat|nested] 5+ messages in thread
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* Re: Gnus and rsync [not found] ` <87lj5a2bw7.fsf@invalid.invalid> @ 2010-11-04 10:35 ` Richard Riley 2010-11-04 23:36 ` Nuno J. Silva 2010-11-05 19:06 ` Eric S Fraga 1 sibling, 1 reply; 5+ messages in thread From: Richard Riley @ 2010-11-04 10:35 UTC (permalink / raw) To: info-gnus-english nunojsilva@invalid.invalid (Nuno J. Silva) writes: > Eric S Fraga <ucecesf@ucl.ac.uk> writes: > >> nunojsilva@invalid.invalid (Nuno J. Silva) writes: >> >>> So I've now hit the issue where I have two computers on which I want to >>> keep gnus stuff on-sync. >>> >>> I've tried the simple solution: rsyncing the whole bunch of files (news, >>> mail, .gnus.el, and some other gnus files. >> >> maybe have a look at unison? works very well for keeping systems in >> sync. > > I will, but AFAICT, from the debugging I made today, the issue is not > rsync, so I'll delay looking unison for a while. > >>> Unfortunately, this doesn't work as expected: in some mail folders the >>> unread messages are months old,[...] > > As promised, I tested diffing the rsync files with a plain tarball sync, > and it's the same. > > What happens is that, after starting gnus, a lot of NOV files get > changed. > > Removing every nov folder (*/.nnmaildir/nov, relative to nnmaildir root) > before starting gnus forces gnus to regenerate these, what causes a > slightly long delay but works (that is, now the unread messages are the > same as in the original gnus setup). > > Next step seems to be understanding which changes are made to NOV files > so I can know why is this happening... > > (Same Gnus and Emacs version on both computers.) I tried a plain old sync for a while with gnus and more often that not things went wrong. The best way I found is to use offlineimap to sync a local dovecot server. Since gnus uses the server flags all is dandy. ^ permalink raw reply [flat|nested] 5+ messages in thread
* Re: Gnus and rsync 2010-11-04 10:35 ` Richard Riley @ 2010-11-04 23:36 ` Nuno J. Silva 0 siblings, 0 replies; 5+ messages in thread From: Nuno J. Silva @ 2010-11-04 23:36 UTC (permalink / raw) To: info-gnus-english Richard Riley <rileyrg@googlemail.com> writes: > nunojsilva@invalid.invalid (Nuno J. Silva) writes: > >> Eric S Fraga <ucecesf@ucl.ac.uk> writes: >> >>> nunojsilva@invalid.invalid (Nuno J. Silva) writes: >>> >>>> So I've now hit the issue where I have two computers on which I want to >>>> keep gnus stuff on-sync. >>>> >>>> I've tried the simple solution: rsyncing the whole bunch of files (news, >>>> mail, .gnus.el, and some other gnus files. [...] >>>> Unfortunately, this doesn't work as expected: in some mail folders the >>>> unread messages are months old,[...] >> >> What happens is that, after starting gnus, a lot of NOV files get >> changed. >> >> Removing every nov folder (*/.nnmaildir/nov, relative to nnmaildir root) >> before starting gnus forces gnus to regenerate these, what causes a >> slightly long delay but works (that is, now the unread messages are the >> same as in the original gnus setup). [...] > > I tried a plain old sync for a while with gnus and more often that not > things went wrong. It's sad, I'd really like if it were as simple as a naïve rsync. But at least now I know it's not something weird in my config. > The best way I found is to use offlineimap to sync a local dovecot > server. Since gnus uses the server flags all is dandy. Can you give me some more hints of what would that setup look like? I suppose it requires running an IMAP server (dovecot) on each machine I want to use, and running offlineimap to sync both IMAP servers (equivalent to rsync in the "plain sync" idea). I'm currently using Gnus to fetch e-mails. As offlineimap was designed exactly to sync newly created files, I suppose it will work - I just need to change the mail folders from nnmaildir to dovecot and save the new messages there. What about performance? I suppose it's pretty okay, as the IMAP server is running locally; and I expect offlineimap to take some more time. Many thanks for your reply - it is pointing me towards a *working* solution, and that's what I was looking for :-) -- Nuno J. Silva gopher://sdf-eu.org/1/users/njsg ^ permalink raw reply [flat|nested] 5+ messages in thread
* Re: Gnus and rsync [not found] ` <87lj5a2bw7.fsf@invalid.invalid> 2010-11-04 10:35 ` Richard Riley @ 2010-11-05 19:06 ` Eric S Fraga 2010-11-13 18:27 ` Nuno J. Silva 1 sibling, 1 reply; 5+ messages in thread From: Eric S Fraga @ 2010-11-05 19:06 UTC (permalink / raw) To: info-gnus-english nunojsilva@invalid.invalid (Nuno J. Silva) writes: > Eric S Fraga <ucecesf@ucl.ac.uk> writes: > >> nunojsilva@invalid.invalid (Nuno J. Silva) writes: >> >>> So I've now hit the issue where I have two computers on which I want to >>> keep gnus stuff on-sync. >>> >>> I've tried the simple solution: rsyncing the whole bunch of files (news, >>> mail, .gnus.el, and some other gnus files. >> >> maybe have a look at unison? works very well for keeping systems in >> sync. > > I will, but AFAICT, from the debugging I made today, the issue is not > rsync, so I'll delay looking unison for a while. > > What happens is that, after starting gnus, a lot of NOV files get > changed. I found that I had to include .newsrc.eld in the syncing operation (whether via rsync or unison) but that, for some reason, I also find that all the nov files get updated and need re-syncing every time. Very annoying but so far no problems (other than slowness in syncing). > Next step seems to be understanding which changes are made to NOV files > so I can know why is this happening... Please do let us know. I would like to avoid this overhead... -- : Eric S Fraga (GnuPG: 0xC89193D8FFFCF67D) in Emacs 23.2.1 ^ permalink raw reply [flat|nested] 5+ messages in thread
* Re: Gnus and rsync 2010-11-05 19:06 ` Eric S Fraga @ 2010-11-13 18:27 ` Nuno J. Silva 0 siblings, 0 replies; 5+ messages in thread From: Nuno J. Silva @ 2010-11-13 18:27 UTC (permalink / raw) To: info-gnus-english Eric S Fraga <ucecesf@ucl.ac.uk> writes: > nunojsilva@invalid.invalid (Nuno J. Silva) writes: > >>> nunojsilva@invalid.invalid (Nuno J. Silva) writes: >>> >>>> So I've now hit the issue where I have two computers on which I want to >>>> keep gnus stuff on-sync. >>>> >>>> I've tried the simple solution: rsyncing the whole bunch of files (news, >>>> mail, .gnus.el, and some other gnus files. [...] >> What happens is that, after starting gnus, a lot of NOV files get >> changed. [...] >> Next step seems to be understanding which changes are made to NOV files >> so I can know why is this happening... > > Please do let us know. I would like to avoid this overhead... I'm now using the IMAP workaround, so that I can have a working syncable mail configuration even while this remains unsolved. But I'm adding this to the TO-DOS file -- if I ever fix this I'll let you know. -- Nuno J. Silva gopher://sdf-eu.org/1/users/njsg ^ permalink raw reply [flat|nested] 5+ messages in thread
end of thread, other threads:[~2010-11-13 18:27 UTC | newest] Thread overview: 5+ messages (download: mbox.gz / follow: Atom feed) -- links below jump to the message on this page -- 2010-10-20 22:48 Gnus and rsync Nuno J. Silva [not found] ` <87ocaetdmn.fsf@ucl.ac.uk> [not found] ` <87lj5a2bw7.fsf@invalid.invalid> 2010-11-04 10:35 ` Richard Riley 2010-11-04 23:36 ` Nuno J. Silva 2010-11-05 19:06 ` Eric S Fraga 2010-11-13 18:27 ` Nuno J. Silva
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