On Wednesday 12 April 2006 15:19, Les Stott wrote:
> Hi,
>
> I have a client with 50 or so pcs, all doing rsync backups throughout
> the day to a backuppc server. Works Great.
>
> We also have a linux box running a Cyrus Imap Store and we were running
> rsync backups too, just getting the cyrus directories. This was working
> great until a month or so ago when the rsync's started failed with
> "Child Exited Prematurely".
>
> My guess was that because the mail store had grown over time to 16gb,
> which would have comprised many thousands of files, that the list of
> files were too big and timing out.
>
> I know i could make multiple rsync shares and have the number of files
> per rsync reduced, but because its cyrus imap its difficult to split
> the store up, unless you do it for every user directory (a-z).
>
> I am going to change strategy and backup the imap store locally to tar
> and then use backuppc to sync the tar files. Each of the compressed
> tar's is about 10gb. So each day at least 10gb will be pumped across
> the network which will be gigabit.
>
> However i want to ensure that this only happens at night and doesn't
> interfere with the day to day operations.
>
> So whats the best way to ensure this happens?
>
> I guess i cant set a per host wake up schedule because thats global
> right? I still want to have all pc's backup during the day normally.
>
> 1. Blackout Periods? Lets say I only want to backup between 1am and
> 6am. I can set a blackout period fine, but how do i manage...
> $Conf{BlackoutBadPingLimit}
> $Conf{BlackoutGoodCnt}
> ...on a single host basis?
> Do i just set $Conf{BlackoutGoodCnt} = 0; in the per pc config file?
>
> 2. Alternatively is there a way to schedule a backup of this host via
> cron? and just disable regular backups?
>
> TIA,
>
> Regards,
>
> Les
Les,
This will only allow backups for a particular Server take place between
Midnight and 8am.
It goes in the pc/servername directory.
# Don't do backups between 8am and Midnight
# Servers should be backed up overnight
$Conf{BlackoutGoodCnt} = 0;
$Conf{BlackoutBadPingLimit} = 3;
$Conf{BlackoutPeriods} = [
{
hourBegin => 8.0,
hourEnd => 24.0,
weekDays => [0, 1, 2, 3, 4, 5, 6],
},
];
Regards,
Tony
>
>
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--
Tony Molloy.
Dept. of Comp. Sci.
University of Limerick
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