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Thread: Does unscheduled full backups - why?

  1. #1
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    Default Does unscheduled full backups - why?

    Hello. My Zimbra server on 6.0.6 has the default backup schedule - it does, however, additional full backups, and I don't know why. See here:

    Code:
    [zimbra@email ~]$ cd /opt/zimbra/backup/sessions/
    [zimbra@email sessions]$ ls -lahtr
    total 120K
    drwxr-x---  6 zimbra zimbra 4.0K May 15 05:45 full-20100514.230005.305
    drwxr-x---  6 zimbra zimbra 4.0K May 16 01:01 incr-20100515.230012.926
    drwxr-x---  6 zimbra zimbra 4.0K May 17 01:00 incr-20100516.230016.806
    drwxr-x---  6 zimbra zimbra 4.0K May 18 01:01 incr-20100517.230012.869
    drwxr-x---  6 zimbra zimbra 4.0K May 18 01:01 full-20100517.230123.029
    drwxr-x---  6 zimbra zimbra 4.0K May 19 01:02 incr-20100518.230012.660
    drwxr-x---  6 zimbra zimbra 4.0K May 20 01:01 incr-20100519.230016.387
    drwxr-x---  6 zimbra zimbra 4.0K May 21 01:01 incr-20100520.230014.394
    drwxr-x---  5 zimbra zimbra 4.0K May 22 02:02 full-20100521.230007.908
    drwxr-x---  6 zimbra zimbra 4.0K May 23 01:01 incr-20100522.230012.672
    drwxr-x---  6 zimbra zimbra 4.0K May 24 01:00 incr-20100523.230009.789
    drwxr-x---  6 zimbra zimbra 4.0K May 25 01:00 incr-20100524.230013.811
    drwxr-x---  6 zimbra zimbra 4.0K May 26 01:01 incr-20100525.230012.529
    drwxr-x---  6 zimbra zimbra 4.0K May 27 01:01 incr-20100526.230012.496
    drwxr-x---  6 zimbra zimbra 4.0K May 28 01:02 incr-20100527.230012.833
    drwxr-x---  6 zimbra zimbra 4.0K May 29 06:05 full-20100528.230005.255
    drwxr-x---  6 zimbra zimbra 4.0K May 30 01:01 incr-20100529.230014.463
    drwxr-x---  6 zimbra zimbra 4.0K May 31 01:02 incr-20100530.230017.767
    drwxr-x---  6 zimbra zimbra 4.0K Jun  1 01:02 incr-20100531.230013.344
    drwxr-x---  6 zimbra zimbra 4.0K Jun  2 01:01 incr-20100601.230012.187
    drwxr-x---  6 zimbra zimbra 4.0K Jun  2 01:01 full-20100601.230130.165
    drwxr-x---  6 zimbra zimbra 4.0K Jun  3 01:01 incr-20100602.230012.244
    drwxr-x---  6 zimbra zimbra 4.0K Jun  4 01:01 incr-20100603.230012.414
    drwxr-x---  6 zimbra zimbra 4.0K Jun  5 05:51 full-20100604.230007.747
    drwxr-x---  6 zimbra zimbra 4.0K Jun  6 01:01 incr-20100605.230014.759
    drwxr-x---  6 zimbra zimbra 4.0K Jun  7 01:00 incr-20100606.230011.441
    drwxr-x---  6 zimbra zimbra 4.0K Jun  8 01:01 incr-20100607.230012.683
    drwxr-xr-x  4 zimbra zimbra 4.0K Jun  9 00:00 ..
    drwxr-x---  6 zimbra zimbra 4.0K Jun  9 01:01 incr-20100608.230011.407
    drwxr-x--- 30 zimbra zimbra 4.0K Jun  9 01:01 .
    [zimbra@email sessions]$ zmschedulebackup 
    Current Schedule:
    
            f 0 1 * * 6 -a all
            i 0 1 * * 0-5 
            d 1m 0 0 * * * 
    [zimbra@email sessions]$
    Any idea?

  2. #2
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    Default

    It's most likely because you created new accounts on those dates. Zimbra does an initial full of just those new accounts so it has a base for the next day's incremental copy.

    One way to check this is to look at the disk space used by each backup copy. The unscheduled full backup should be much (MUCH) smaller than the "regular" one.

    Also, if you look in the admin web console, hover your mouse pointer over any backup listed it will tell you how many accounts are included in that copy.
    Last edited by odeleon; 06-09-2010 at 04:51 AM. Reason: minor edit on disk space

  3. #3
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    Default Unscheduled full backups - Restores

    This brings up an important question... The nightly incremental backup is done first, then the full backup of the new accounts.

    So if a full restore is required, how is this to be done? Do you go back to the last weekly full and restore it, then restore each incremental and full backup in order, followed by the archived redo logs? Or can you skip restoring the unscheduled full backups?

    I guess I'm a bit confused here.

    Thanks in advance!

    Mark

    Quote Originally Posted by odeleon View Post
    It's most likely because you created new accounts on those dates. Zimbra does an initial full of just those new accounts so it has a base for the next day's incremental copy.

    One way to check this is to look at the disk space used by each backup copy. The unscheduled full backup should be much (MUCH) smaller than the "regular" one.

    Also, if you look in the admin web console, hover your mouse pointer over any backup listed it will tell you how many accounts are included in that copy.

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