On 14/09/17 12:08, Nix wrote: >> The rule is simple - don't abuse your tools, and btrfs - USED WITHIN ITS >> > LIMITATIONS - is a powerful and reliable file system. > Yeah, but... if you avoid the advanced features, why use btrfs? In > particular, why use it *for a backup medium* (where such features are > distinctly less useful than on a non-backup medium)? Because, if you use snapshots and an "in-place rsync" (which overwrites the part of files which have changed, rather than replacing the file by default), then each snapshot is a full backup, but only uses the space of an incremental. The OP was building a backup server, so all their live data is elsewhere, and provided you look after your backups, this will give you a very cheap and effective backup system. (Add to which I know nothing about XFS and ZFS, other than ZFS needs gobs of ram and why would you want to over-provision a server that isn't switched on unless you're backing up.) Cheers, Wol -- To unsubscribe from this list: send the line "unsubscribe linux-raid" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
