Hi James, James Litchfield wrote: > I believe the answer is in the last email in that thread. hald doesn't > offer > the notifications and it's not clear that ZFS can handle them. As is > noted, > there are complications with ZFS due to the possibility of multiple disks > comprising a volume, etc. It would be a lot of work to make it work > correctly for any but the simplest single disk case.
For the kind of usage cases we have in mind the percentage of people wanting to back up to some kind of hot pluggable multi device volume is minutely small in all likelihood. Would it be a lot of work to make it work for single disk volumes? It seems a shame to not provide this functionality and convenience because of a few very rare/exotic configurations for which it wouldn't work. What would we stand to lose by getting at least some (majority?) of configurations working? Thanks, Niall > > Jim > --- > Niall Power wrote: >> Hi Tim, >> >> Tim Foster wrote: >> >>> Niall Power wrote: >>> >>>> Bueller? Anyone? >>>> >>> Yeah, I'd love to know the answer too. The furthest I got into >>> investigating this last time was: >>> >>> http://mail.opensolaris.org/pipermail/zfs-discuss/2007-December/044787.html >>> >>> >>> - does that help at all Niall? >>> >> >> I dug around and found those few hald pieces for zpools also. Seems >> to me >> that there was at least an intention or desire to make things work >> work with >> hald. >> Some further searching around reveals this conversation thread: >> http://opensolaris.org/jive/thread.jspa?messageID=257186 >> The trail goes cold there though. >> >>> The context to Niall's question is to extend Time Slider to do proper >>> backups to usb devices whenever a device is inserted. I nearly had >>> this >>> working with: >>> >>> http://blogs.sun.com/timf/entry/zfs_backups_to_usb_mass >>> http://blogs.sun.com/timf/entry/zfs_automatic_backup_0_1 >>> >>> but I used pcfs on the storage device to store flat zfs send-streams as >>> I didn't have a chance to work out what was going on. Getting ZFS plug >>> n' play on usb disks would be much much cooler though[1]. >>> >> >> Exactly. Having zfs as the native filesystem would enable snapshot >> browsing >> from within nautilus so it's a requirement for this project. >> >>> cheers, >>> tim >>> >>> [1] and I reckon that by relying on the 'zfs/interval' 'none' setting >>> for the auto-snapshot service, doing this now will be a lot easier than >>> my previous auto-backup hack. >>> >> That could be quite useful alright. We might need to come up with a >> mechanism >> to delete the snapshot after it's taken and backed up. >> >> Cheers, >> Niall >> >> _______________________________________________ >> zfs-discuss mailing list >> zfs-discuss@opensolaris.org >> http://mail.opensolaris.org/mailman/listinfo/zfs-discuss >> >> > _______________________________________________ zfs-discuss mailing list zfs-discuss@opensolaris.org http://mail.opensolaris.org/mailman/listinfo/zfs-discuss
