Bruno Faria wrote: > Hi, > > I've posted a similar a question before but since I didn't get any response > the first time, I guess I'll try again . :) >
You might be edified by reading the documentation (http://backuppc.sourceforge.net/faq/BackupPC.html). I highly recommend the section detailing how the software works (http://backuppc.sourceforge.net/faq/BackupPC.html#backuppc_operation). If you are not the document reading type, I have excerpted some pertinent details below... > For some reason I'm getting alot of "link pending". During the first backups > I didn't have any problem with link pending since once a backup was done it > would be done without any link pending. But whenever BackupPC_Nightly > started, all the backups are getting "link pending" for hours and hours > (about 7+ hours of link pending for each host). > > So here are my questions: > > 1) Is it normal for links to be pending this long? > From the document section on $Conf{MaxBackupPCNightlyJobs} (under http://backuppc.sourceforge.net/faq/BackupPC.html#general_server_configuration): "Each night, at the first wakeup listed in $Conf{WakeupSchedule} <http://backuppc.sourceforge.net/faq/BackupPC.html#item__conf_wakeupschedule_>, BackupPC_nightly is run. Its job is to remove unneeded files in the pool, ie: files that only have one link. To avoid race conditions, BackupPC_nightly and BackupPC_link cannot run at the same time." > 2) Would it be bad if I just increase the max amount of "link pending" on > the config.pl file to allow about 20+ pending links? > Personally, I have "$Conf{MaxPendingCmds} = 50;" My nightly job* (which removes between 6 and 9 GB of data from a pool size of about 240GB on a pair of software mirrored SCSI drives) is currently taking between 9 and 14 hours. I get close to 30 link jobs queued, and they all clear out less than an hour after the nightly job finishes. Since I run all my backups at night (blackout period of 07:00 to 19:30) I'll probably wind up making the "nightly" job run in the morning. > 3) What's the job of "link pending"? > Also from the docs : "BackupPC_link reads the NewFileList written by BackupPC_dump and inspects each new file in the backup. It re-checks if there is a matching file in the pool (another BackupPC_link could have added the file since BackupPC_dump checked). If so, the file is removed and replaced by a hard link to the existing file. If the file is new, a hard link to the file is made in the pool area, so that this file is available for checking against each new file and new backup." > Thanks for help in advance! > > --Bruno Hope this helps. Chris * Using the term job loosely here, as I personally have $Conf{MaxBackupPCNightlyJobs} = 8. ------------------------------------------------------------------------- This SF.net email is sponsored by: Microsoft Defy all challenges. Microsoft(R) Visual Studio 2008. http://clk.atdmt.com/MRT/go/vse0120000070mrt/direct/01/ _______________________________________________ BackupPC-users mailing list BackupPC-users@lists.sourceforge.net List: https://lists.sourceforge.net/lists/listinfo/backuppc-users Wiki: http://backuppc.wiki.sourceforge.net Project: http://backuppc.sourceforge.net/
