Adam Goryachev wrote at about 09:23:51 +1000 on Tuesday, August 28, 2012: > PS, the real problem with what you are seeing is possibly that backuppc > isn't backing up one of the large files before being interrupted/timing > out. Since it doesn't continue the backup from the middle of the file, > you never complete that file, and therefore will never complete the > backup. It would be ideal if backuppc was able to keep a partial file in > a partial backup, so that it could continue the backup on the next run. > Even more intelligent would be the ability to continue the backup using > both the partial file AND the previous complete copy (if one existed) so > that when a large file (disk image) was regularly backed up, and > interrupted half way through (ADSL dropped sync) then it would continue > instead of doing a full copy of the second half of the file by using the > second half of the original file.
Given that the fate and timing of a new 4.x version of BackupPC is uncertain at best and that this is a relatively common problem, maybe we should think about how to *patch* BackupPC 3.x so that partially backup files are stored and can be resumed from. This should never affect more than one file per backup -- i.e., the file currently being rsynced at the time that BackupPC fails or times out. Upon the next backup, the built-in rsync functionality of resuming partial copies could be used to continue the copy mid-stream. Now this may require some changes to File-RsyncP if the resume functionality is not built-in to the perl implementation but hopefully that wouldn't be too difficult. It also doesn't seem like the changes to BackupPC would be too difficult either since it already is able to recycle partial backups at the file level, all that would be needed would be to check for and resume any partially backed up file. Anybody interested in pursuing this? ------------------------------------------------------------------------------ Live Security Virtual Conference Exclusive live event will cover all the ways today's security and threat landscape has changed and how IT managers can respond. Discussions will include endpoint security, mobile security and the latest in malware threats. http://www.accelacomm.com/jaw/sfrnl04242012/114/50122263/ _______________________________________________ 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/
