Thanks for the tip on cpio -0 (though I may just use ZFS send to tape) and for the advice regarding ZFS. Everything I have read agrees with you that ZFS has advantages for jails and VMs. Iocage demands it. I may even do some scrubs now and then. You are also correct about Linux support in jails as of 12.2.
Thanks. On Sat, Feb 6, 2021 at 11:34 AM Walter von Entferndt < walter.von.entfer...@posteo.net> wrote: > At Samstag, 6. Februar 2021, 13:00:01 CET Abner Gershon > <6731...@gmail.com> wrote: > > Appreciate your advice. There seems to be overwhelming enthusiasm for > > ZFS. > > This enthusiasm is justified. ZFS offers many advantages for your > setup. > > > Maybe I am swimming against the current leaning toward UFS. My > > reasons are: 1. Have relied on dump backups to LTO tape for the past > > decade and am very comfortable with dump and restore. Sure, tar would > > not be hard to learn but will it reliably handle the samba files with > > names like "Bob's ideas about marketing.doc" correctly? > > You can use find(1) & cpio(1)'s -0 option to use zero-terminated > filenames. > > > 2. I have 72 GB ram but am planning to run a Windows guest and Linux > > guest with Oracle database on behyve as well as a few jails. > > Concerned ZFS will eat up too much memory. > > Adjust the appropiate sysctl(8) knobs to restrict ZFS ARC cache size. > ZFS dedup & cloning features are especially useful when working with > jails and VMs. For Linux guests you don't need a VM anymore, Linux- > branded jails are now in STABLE, i.e. about to come latest with 13-REL. > Maybe they are already in 12.2, I don't know. > > > > 3. Not really convinced that "bit-rot" should be a concern. I > > understand it is real. But, in the past 15 years I can't recall > > coming across a single corrupted data (pdf, word doc, ledger, mp3, > > etc) file. > > I understand that walking over the street when the traffic lights show > red is dangerous. But I never had an accident for over 40 years doing > that... > > > I currently manage about 4TB of data and it grows by about > > 500 or 600 GB per year. Have been using ext3 and ext4 on debian linux > > for the past 15 years. > > Use 3+-way mirrors or RAID with double/triple parity on disks >8 TB. > The reason is that on such large disks, the likelyhood of unrecoverable > & undetected bit errors is astonishingly high. Without a checksum, > these are undetected. ZFS offers strong checksums from platter to > applications memory. > -- > =|o) "Stell' Dir vor es geht und keiner kriegt's hin." (Wolfgang Neuss) > > > _______________________________________________ freebsd-geom@freebsd.org mailing list https://lists.freebsd.org/mailman/listinfo/freebsd-geom To unsubscribe, send any mail to "freebsd-geom-unsubscr...@freebsd.org"
