Re: [rdiff-backup-users] Daylight Saving Time problem?

[Randall Nortman]

On Sun, Apr 03, 2005 at 09:33:46PM -0700, Ben Escoto wrote:
> >>>>> Randall Nortman <address@hidden>
> >>>>> wrote the following on Sun, 3 Apr 2005 08:44:33 -0400
> 
> > I woke up this morning to nasty errors from my rdiff-backup cron
> > job, which I assume are most likely caused by the DST switch.
> > First, I got "AssertionError: Time 1112514303 is out of bounds", and
> > the backup failed.  Now, when I try to regress the archive, I get
> > "AssertionError: Too many recent increments".
> 
> Hmm, the first error happens when rdiff-backup thinks the previous
> backup occurred after the current one (time-travel!).  Is it possible
> that your timezone information is bugged in some way?  I don't see why
> you would get this error, especially since clocks get ahead, not
> behind.
> 
> Also rdiff-backup checks the time and time once at the beginning of
> the backup, so in theory the timezone changing during the backup
> shouldn't matter.
> 
> > AssertionError: Too many recent increments
> > 
> > So... how do I fix this?
> 
> Since the failed backup never really got started, it should be ok to
> delete the rdiff-backup-data/current-mirror.xxxx file corresponding to
> the failed backup.  My guess is you need to delete the earlier one but
> if you posted the relevant files it would be easier to tell.

Not knowing exactly what the relevant files are, I'm offering a
directory listing of the rdiff-backup-data and
rdiff-backup-data/increments directories.  Both of these directories
are very large, so I'm sorting by time and including the head and the
tail.  I'm including the tail because I noticed a lot of files dated
well in the past but with names indicating that they are recent --
what is the deal with these?  Some are Aug 9, 2004, and some are Aug
16, 2003.  I only maintain at most 30 days of increments in this
archive, so there should be nothing from these dates.  Are these magic
dates, with special meaning for rdiff-backup?

Note that this particular backup is scheduled to run every 15
minutes.  It seems to jump from 01:45 to 03:00, as expected.

First rdiff-backup-data:

total 527627
drwx------  3 rbackup users 727968 Apr  3 03:15 .
-rw-------  1 rbackup users      0 Apr  3 03:00 
current_mirror.2005-04-03T03:00:04-04:00.data
-rw-------  1 rbackup users    108 Apr  3 03:00 
error_log.2005-04-03T03:00:04-04:00.data.gz
drwx------  4 rbackup users 242184 Apr  3 01:45 increments
-rw-------  1 rbackup users      0 Apr  3 01:45 
current_mirror.2005-04-03T01:45:03-05:00.data
-rw-------  1 rbackup users    116 Apr  3 01:30 
error_log.2005-04-03T01:30:08-05:00.data.gz
-rw-------  1 rbackup users 109827 Apr  3 01:30 
file_statistics.2005-04-03T01:30:08-05:00.data.gz
-rw-------  1 rbackup users 134451 Apr  3 01:30 
mirror_metadata.2005-04-03T01:30:08-05:00.snapshot.gz
-rw-------  1 rbackup users    507 Apr  3 01:30 
session_statistics.2005-04-03T01:30:08-05:00.data

...

-rwxr-xr-x  1 rbackup users      0 Aug  9  2004 
increments.2005-04-02T23:15:03-05:00.dir
-rwxr-xr-x  1 rbackup users      0 Aug  9  2004 
increments.2005-04-02T23:30:04-05:00.dir
-rwxr-xr-x  1 rbackup users      0 Aug  9  2004 
increments.2005-04-02T23:45:03-05:00.dir
-rwxr-xr-x  1 rbackup users      0 Aug  9  2004 
increments.2005-04-03T00:00:04-05:00.dir
-rwxr-xr-x  1 rbackup users      0 Aug  9  2004 
increments.2005-04-03T00:15:03-05:00.dir
-rwxr-xr-x  1 rbackup users      0 Aug  9  2004 
increments.2005-04-03T00:30:04-05:00.dir
-rwxr-xr-x  1 rbackup users      0 Aug  9  2004 
increments.2005-04-03T00:45:03-05:00.dir
-rwxr-xr-x  1 rbackup users      0 Aug  9  2004 
increments.2005-04-03T01:00:08-05:00.dir
-rwxr-xr-x  1 rbackup users      0 Aug  9  2004 
increments.2005-04-03T01:15:04-05:00.dir
-rwxr-xr-x  1 rbackup users      0 Aug  9  2004 
increments.2005-04-03T01:30:08-05:00.dir


Now increments:

total 1509
drwx------  3 rbackup users 727968 Apr  3 03:15 ..
drwx------  4 rbackup users 242184 Apr  3 01:45 .
drwx------  4 rbackup users 224544 Apr  3 01:45 var
drwx------  7 rbackup users 351232 Apr  3 01:45 home
-rwxrwsr-x  1 rbackup users      0 Aug  6  2004 
home.2005-03-10T12:45:04-05:00.dir
-rwxrwsr-x  1 rbackup users      0 Aug  6  2004 
home.2005-03-10T13:00:05-05:00.dir
-rwxrwsr-x  1 rbackup users      0 Aug  6  2004 
home.2005-03-10T13:15:03-05:00.dir
-rwxrwsr-x  1 rbackup users      0 Aug  6  2004 
home.2005-03-10T13:30:03-05:00.dir
-rwxrwsr-x  1 rbackup users      0 Aug  6  2004 
home.2005-03-10T13:45:03-05:00.dir

...

-rwxr-xr-x  1 rbackup users      0 Aug 16  2003 
var.2005-04-02T23:15:03-05:00.dir
-rwxr-xr-x  1 rbackup users      0 Aug 16  2003 
var.2005-04-02T23:30:04-05:00.dir
-rwxr-xr-x  1 rbackup users      0 Aug 16  2003 
var.2005-04-02T23:45:03-05:00.dir
-rwxr-xr-x  1 rbackup users      0 Aug 16  2003 
var.2005-04-03T00:00:04-05:00.dir
-rwxr-xr-x  1 rbackup users      0 Aug 16  2003 
var.2005-04-03T00:15:03-05:00.dir
-rwxr-xr-x  1 rbackup users      0 Aug 16  2003 
var.2005-04-03T00:30:04-05:00.dir
-rwxr-xr-x  1 rbackup users      0 Aug 16  2003 
var.2005-04-03T00:45:03-05:00.dir
-rwxr-xr-x  1 rbackup users      0 Aug 16  2003 
var.2005-04-03T01:00:08-05:00.dir
-rwxr-xr-x  1 rbackup users      0 Aug 16  2003 
var.2005-04-03T01:15:04-05:00.dir
-rwxr-xr-x  1 rbackup users      0 Aug 16  2003 
var.2005-04-03T01:30:08-05:00.dir


I can post the content of any of these files if that's helpful; just
let me know which ones you'd need to see.

Thanks!

Randall