Re: [9fans] advice? fossil+venti (p9), vbackup+venti (p9p) vs. some other means of backup
On 11.12.2014 11:50, Rudolf Sykora wrote: > Does anybody rely on a backup scheme using, say, > vbackup+venti on linux? Does it work well, or would > you recomment other means of doing a backup? haven't used it for backup, I (many years ago) built an video hosting platform ontop of venti. since then I've still got an self-replicating venti cluster on my 2do list, but never actually found the time to do implement it. cu -- Enrico Weigelt, metux IT consulting +49-151-27565287
Re: [9fans] advice? fossil+venti (p9), vbackup+venti (p9p) vs. some other means of backup
Dear David, Anthony, Thanks to both of you. I'll try to use some of your suggestions. Ruda On 11 December 2014 at 21:04, Anthony Sorace wrote: >> Does anybody rely on a backup scheme using, say, >> vbackup+venti on linux? Does it work well, or would >> you recomment other means of doing a backup? > > Not precisely what you're asking, but likely close enough experience to be > useful: > > When last I was responsible for a bunch of unix boxes, I was using venti for > backup. I started off using vbackup, but switched to something vac-based > pretty quickly. I realized there was a ton of data on there that I didn't > feel the need to keep backed up (the OS itself, but more significantly nearly > a TB of transcoded video (we kept the source backed up)). Also, I don't think > I could get at the vbackup images from Plan 9; the vac ones work fine, with > some oddities based on file system differences. These were OS X systems, but > I was just using stock p9p stuff; it should run fine on linux. I was sending > to a remote venti running on Plan 9. > > Using vac instead of vbackup increases your recovery time (you have to > reinstall the OS & tools, and in my case we'd have to re-transcode the > video), but we had a warm spare and RAID to guard agains simple disk > failures; this was mostly for genuine disaster recovery (although being able > to mount and cd around my backup history from my Plan 9 workstation was a > huge benefit). > > I also ran something similar on my laptop. I've stopped using that regularly > in favor of Time Machine, but still use it as an occasional one-off for > disaster recovery (although it's not off-site). > >> I guess there are also people using fossil+venti on >> p9. Are those happy? > > Yes, quite. Ever since someone (Richard Miller, I think) tracked down that > persistent snapshot hang bug, it's been great. Most of the complaining about > fossil's stability comes from outdated info. The fossil+venti combo isn't the > fastest option (Erik's kenfs kicks ass there), but the tradeoffs work well > for my needs. > >> I am looking for a sustainable means of backup, >> mainly on linux, and am avaluating different options >> (rdiff-backup, rsnapshot, dump/restore, rdup...) > > I would use this system again if I had unix servers I cared about. For my > MacBook, Time Machine gets the edge mostly because it's automatic. > > This is not quite the latest version, but you can take a look at > /n/sources/contrib/anothy/bin/rc/vacbak. You can also take a look at > .../anothy/lib/tet.(cron files xfiles) for examples of config files I used on > a system called tet. > > You're reminding me I've been meaning to come up with an off-site backup plan > for my system, which I haven't had in a few years... > >
Re: [9fans] advice? fossil+venti (p9), vbackup+venti (p9p) vs. some other means of backup
> Does anybody rely on a backup scheme using, say, > vbackup+venti on linux? Does it work well, or would > you recomment other means of doing a backup? Not precisely what you're asking, but likely close enough experience to be useful: When last I was responsible for a bunch of unix boxes, I was using venti for backup. I started off using vbackup, but switched to something vac-based pretty quickly. I realized there was a ton of data on there that I didn't feel the need to keep backed up (the OS itself, but more significantly nearly a TB of transcoded video (we kept the source backed up)). Also, I don't think I could get at the vbackup images from Plan 9; the vac ones work fine, with some oddities based on file system differences. These were OS X systems, but I was just using stock p9p stuff; it should run fine on linux. I was sending to a remote venti running on Plan 9. Using vac instead of vbackup increases your recovery time (you have to reinstall the OS & tools, and in my case we'd have to re-transcode the video), but we had a warm spare and RAID to guard agains simple disk failures; this was mostly for genuine disaster recovery (although being able to mount and cd around my backup history from my Plan 9 workstation was a huge benefit). I also ran something similar on my laptop. I've stopped using that regularly in favor of Time Machine, but still use it as an occasional one-off for disaster recovery (although it's not off-site). > I guess there are also people using fossil+venti on > p9. Are those happy? Yes, quite. Ever since someone (Richard Miller, I think) tracked down that persistent snapshot hang bug, it's been great. Most of the complaining about fossil's stability comes from outdated info. The fossil+venti combo isn't the fastest option (Erik's kenfs kicks ass there), but the tradeoffs work well for my needs. > I am looking for a sustainable means of backup, > mainly on linux, and am avaluating different options > (rdiff-backup, rsnapshot, dump/restore, rdup...) I would use this system again if I had unix servers I cared about. For my MacBook, Time Machine gets the edge mostly because it's automatic. This is not quite the latest version, but you can take a look at /n/sources/contrib/anothy/bin/rc/vacbak. You can also take a look at .../anothy/lib/tet.(cron files xfiles) for examples of config files I used on a system called tet. You're reminding me I've been meaning to come up with an off-site backup plan for my system, which I haven't had in a few years...
Re: [9fans] advice? fossil+venti (p9), vbackup+venti (p9p) vs. some other means of backup
> I guess there are also people using fossil+venti on > p9. Are those happy? I'm using Fossil and Venti on Plan 9 and I'm quite happy. On my typical setup, I've two arenas partitions mirrored on two hard disks using venti/mirrorarenas. My main file server is mirrored to another file server using venti/wrarena every night. I'm regularly dumping arenas to backup hard disks and blu-ray using venti/rdarena. I don't really store any long-term stuff on my Linux machines. I just copy the files to the Plan 9 file servers using v9fs. -- David du Colombier
