On 1/8/21 11:36 am, William Kenworthy wrote: > On 1/8/21 8:50 am, Frank Steinmetzger wrote: >> Am Sat, Jul 31, 2021 at 12:58:29PM +0800 schrieb William Kenworthy: >> >>> Its not raid, just a btrfs single on disk (no partition). Contains a >>> single borgbackup repo for an offline backup of all the online >>> borgbackup repo's I have for a 3 times a day backup rota of individual >>> machines/data stores >> So you are borg’ing a repo into a repo? I am planning on simply rsync’ing >> the borg directory from one external HDD to another. Hopefully SMR can cope >> with this adequatly. >> >> And you are storing several machines into a single repo? The docs say this >> is not supported officially. But I have one repo each for /, /home and data >> for both my PC and laptop. Using a wrapper script, I create snapshots that >> are named $HOSTNAME_$DATE in each repo. > Basicly yes: I use a once per hour snapshot of approximately 500Gib of > data on moosefs, plus borgbackups 3 times a day to individual repos on > moosefs for each host. 3 times a day, the latest snapshot is stuffed > into a borg repo on moosefs and the old snapshots are deleted. I > currently manually push all the repos into a borg repo on the USB3 SMR > drive once a day or so. > > 1. rsync (and cp etc.) are dismally slow on SMR - use where you have to, > avoid otherwise. >
> forgot to mention 1a. borgbackup repos are not easily copy'able - each repo has a unique ID and copy'ing via rsync creates a duplicate, not a new repo with a new cache and metadata which depending on how you use can cause corruption/data loss. Google it. BillK
