On 14Aug2022 15:22, Emmett Culley <lst_man...@webengineer.com> wrote: >I've been using BackupPC for many years. It can use rsync via ssh for >remote backups or rsync directly for local (LAN) backup. It can >automatically dedup as well.
We had a client using BackupPC. Maybe for a single PC it works well. They were backing up several (well over 10) PCs to a NAS. It hammered the system in both I/O and CPU. Combined with some (old kernel) filesystem bugs, it would mangle the filesystem. It seems to do the rsync protocol _in Perl_ at the BackupPC end, and uses an elaborate hash-named file tree for the deduplication function. It needed a special web interface to browse/restore. It kind of works, but does not scale. Now we use histbackup (disclaimer: a script of my own similar in use and implementation to rsnapshot). The backups are MUCH faster and we haven't had the (again, ancient kernel) filesystem bugs at all. because even though we run the backups in series, it is still much faster. Basic scheme is: - a directory per target (machine:subdir) - timestampted hardlinked subtrees in each of the targets Hardlink the previous backup to a new tree for today's backup, rsync from the target into the new tree. rsnapshot does the same kind of thing and modern rsync even has a mode to do the "new hard link tree and sync" part of this as a command line switch. The trees are just... directory trees you can cd around in etc. We NFS export them from the NAS read only so they can be directly browsed. Because its NFS, the UIDs etc are identical and therefore people can't brwose stuff they can't browse in the live filesystems anyway. These days I use this script: https://github.com/cameron-simpson/css/blob/main/bin-cs/run-backups for my personal backups. I'm usually prepared to rebuilt an utterly failed machine instead of restoring an OS from backup. Cheers, Cameron Simpson <c...@cskk.id.au> _______________________________________________ users mailing list -- users@lists.fedoraproject.org To unsubscribe send an email to users-le...@lists.fedoraproject.org Fedora Code of Conduct: https://docs.fedoraproject.org/en-US/project/code-of-conduct/ List Guidelines: https://fedoraproject.org/wiki/Mailing_list_guidelines List Archives: https://lists.fedoraproject.org/archives/list/users@lists.fedoraproject.org Do not reply to spam, report it: https://pagure.io/fedora-infrastructure/new_issue
