Path: csiph.com!fu-berlin.de!uni-berlin.de!individual.net!not-for-mail From: "Carlos E.R." Newsgroups: comp.os.linux.misc Subject: Re: tip: sweet grep recurse feature Date: Mon, 17 Jun 2019 12:37:58 +0200 Lines: 23 Message-ID: <657ktf-eaa.ln1@Telcontar.valinor> References: <3pGdnQH4TpE0zp_AnZ2dnUU78LOdnZ2d@brightview.co.uk> <87o931xxbz.fsf@LkoBDZeT.terraraq.uk> <87d0jgy2jw.fsf@LkoBDZeT.terraraq.uk> <272ftf-ur.ln1@Telcontar.valinor> Mime-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: 8bit X-Trace: individual.net ELyEZkuxZLeTOQewHGeoRQSoh4muqS9r2rK0RZgvJONLATaFKc X-Orig-Path: Telcontar.valinor!not-for-mail Cancel-Lock: sha1:GYqYwA7vnm80cvv6KtCt1lvG5E8= User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:60.0) Gecko/20100101 Thunderbird/60.6.1 In-Reply-To: Content-Language: en-CA Xref: csiph.com comp.os.linux.misc:27205 On 15/06/2019 19.09, Grant Taylor wrote: > On 6/15/19 5:42 AM, Carlos E.R. wrote: >> There is another way. You do a "new" backup with hardlinks to older >> backups. The backup for today does not have copies of files that were >> deleted, but the backup for "yesterday" has it. And unchanged files >> are not copied again, wasting space, but are links to the first >> appeareance on the backup. The other step needed is to purge backups >> older than 30 days. > > Yep. > > That's a technical description of what BackupPC does under the hood. > >> What I miss is storing the files compressed. > > Storing the BackupPC pool on a ZFS pool with compression enabled does > that transparently.  ;-) ZFS? I'll have to think about that. -- Cheers, Carlos.