Re: [rsnapshot-discuss] Baffled by interval spec

[Steve W. <st...@pu...>]

Grant,

I believe the problem is with your crontab entries.  You should only be 
running "weekly" once per 7 days and "monthly" once per month.  cron is 
running these every day.  The man page gives this example crontab:
            50 23 * * *         /usr/local/bin/rsnapshot daily
            40 23 * * 6         /usr/local/bin/rsnapshot weekly
            30 23 1 * *         /usr/local/bin/rsnapshot monthly

Hope that helps.

Steve

On 05/20/2011 04:23 PM, Grant Edwards wrote:
> I've read the docs and looked at the sample config, and I still have
> absolutely no clue how to configure intervals to get rsnapshot to work
> right.
>
> Here's my config file:
>
>     config_version  1.2
>     snapshot_root   /mybook2/backups
>     no_create_root  1
>     cmd_cp          /bin/cp
>     cmd_rm          /bin/rm
>     cmd_rsync       /usr/bin/rsync
>     cmd_logger      /usr/bin/logger
>     cmd_du          /bin/du
>     cmd_rsnapshot_diff      /usr/bin/rsnapshot-diff
>     verbose         2
>     loglevel        3
>     lockfile        /var/run/rsnapshot.pid
>     link_dest       1
>     backup  /home/          localhost/
>     backup  /etc/           localhost/
>     interval        daily   7
>     interval        weekly  4
>     interval        monthly 24
>
> According to the docs, that means keep 7 daily backups, then 4 weekly
> backups, then 24 monthly (28-day months) backups.  The crontab entries
> look like this:
>
>     3 1 * * *           /usr/bin/rsnapshot monthly
>     3 2 * * *           /usr/bin/rsnapshot weekly
>     3 3 * * *           /usr/bin/rsnapshot daily
>
> But all I get are daily backups for the past (7+4+24) days.  [They
> have various names starting with daily/weekly/monthly, but they're all
> just 1 day apart.] Weekly backups be a 7 days apart and monthly
> backups should be 4 weeks apart.
>
> Here's an exmaple listing of a file that gets modified every few
> minutes:
>
>     ls -lt */localhost/home/grante/.imapnotify.log
>     [...] May 20 03:22 daily.0/localhost/home/grante/.imapnotify.log
>     [...] May 19 04:13 daily.1/localhost/home/grante/.imapnotify.log
>     [...] May 18 04:11 daily.2/localhost/home/grante/.imapnotify.log
>     [...] May 17 04:17 daily.3/localhost/home/grante/.imapnotify.log
>     [...] May 16 04:14 daily.4/localhost/home/grante/.imapnotify.log
>     [...] May 15 04:12 daily.5/localhost/home/grante/.imapnotify.log
>     [...] May 14 04:11 daily.6/localhost/home/grante/.imapnotify.log
>     [...] May 13 04:13 weekly.0/localhost/home/grante/.imapnotify.log
>     [...] May 12 04:14 weekly.1/localhost/home/grante/.imapnotify.log
>     [...] May 11 04:14 weekly.2/localhost/home/grante/.imapnotify.log
>     [...] May 10 04:25 weekly.3/localhost/home/grante/.imapnotify.log
>     [...] May  9 04:17 monthly.0/localhost/home/grante/.imapnotify.log
>     [...] May  8 04:18 monthly.1/localhost/home/grante/.imapnotify.log
>     [...] May  7 04:16 monthly.2/localhost/home/grante/.imapnotify.log
>     [...] May  6 04:16 monthly.3/localhost/home/grante/.imapnotify.log
>     [...] May  5 04:17 monthly.4/localhost/home/grante/.imapnotify.log
>     [...] May  3 19:31 monthly.5/localhost/home/grante/.imapnotify.log
>     [...] May  3 03:55 monthly.6/localhost/home/grante/.imapnotify.log
>     [...] May  2 03:51 monthly.7/localhost/home/grante/.imapnotify.log
>     [...] May  1 03:51 monthly.8/localhost/home/grante/.imapnotify.log
>     [...] Apr 30 03:47 monthly.9/localhost/home/grante/.imapnotify.log
>     [...] Apr 29 03:46 monthly.10/localhost/home/grante/.imapnotify.log
>     [...] Apr 28 03:42 monthly.11/localhost/home/grante/.imapnotify.log
>     [...] Apr 27 03:42 monthly.12/localhost/home/grante/.imapnotify.log
>     [...] Apr 26 03:34 monthly.13/localhost/home/grante/.imapnotify.log
>     [...] Apr 25 03:28 monthly.14/localhost/home/grante/.imapnotify.log
>     [...] Apr 24 03:25 monthly.15/localhost/home/grante/.imapnotify.log
>     [...] Apr 23 03:20 monthly.16/localhost/home/grante/.imapnotify.log
>     [...] Apr 22 03:20 monthly.17/localhost/home/grante/.imapnotify.log
>     [...] Apr 21 03:22 monthly.18/localhost/home/grante/.imapnotify.log
>     [...] Apr 20 03:21 monthly.19/localhost/home/grante/.imapnotify.log
>     [...] Apr 19 03:21 monthly.20/localhost/home/grante/.imapnotify.log
>     [...] Apr 18 03:15 monthly.21/localhost/home/grante/.imapnotify.log
>     [...] Apr 17 03:13 monthly.22/localhost/home/grante/.imapnotify.log
>     [...] Apr 16 03:12 monthly.23/localhost/home/grante/.imapnotify.log
>
> Why don't I get weekly/monthly backup?
>
> I want daily backups going back 7 days, weekly backups going back 4
> weeks, then montly backups going back 24 months [where "month" is
> defined as 4 weeks].  Instead, what I get is daily backups going back
> 35 days.
>

-- 
Steven M. Wilson, Systems and Network Manager
Markey Center for Structural Biology
Purdue University
(765) 496-1946