Course I'm not using ECC RAM. This is a home system (: The data is... well, be nice if it didn't get corrupted, but if a video file gets a small glitch in it, it's not a huge deal. I can always rerip one disc if I need to. I also figured that's why I have two smaller raidz1 (which is equivalent to raid5, right?) pools - it should be able to fix the occasional checksum error. I've not seen any crop up on this setup until that scrub, which was after I copied and erased about 8TB a couple of times. So not super worried. I can't really not use the filesystem during a scrub, since a scrub takes over 24 hours. I could restrict it to read-only. Hey, that reminds me, for some reason the thing mounts as read-only when I reboot. And since it's not in fstab I don't know where to fix that... anyone?... On Tue, 11 Mar 2014, Jake Vath wrote: > > Now, I am seeing occasional checksum errors. I stress-tested the > heck out of the thing for a week or so (filled up the > filesystem, then deleted most the junk I used for that, etc) and > when I ran a scrub it found 12 of them. I'm assuming that since > I am running multiple redundancies that that's not a huge > problem. Is this correct? Should I cronjob a scrub once a month? > > Are you using ECC RAM? > If you're not, then you'll see some checksumming/parity calculation errors. > Is this a huge problem? I guess it could be when you consider how important > your data is to you. > Your ZPool(s) could get really screwed up if you're getting checksumming > errors. > > A cronjob to scrub the system isn't a bad idea, I guess you'd have to make > sure that nothing is going to try and use the system during the scrubbing > process though. > > -> Jake > > > -> Jake > > > On Tue, Mar 11, 2014 at 2:24 PM, <tclug at freakzilla.com> wrote: > This is a follow-up to my ZFS woes from a month or so ago. > > Funny thing. When that machine had 16gigs of RAM + 16gigs of > swap, it was using 15gig of RAM and not touching swap at all, > and ZFS performace was horrible. > > So I threw another 16gigs of RAM in there. > > Now it uses 20gigs of RAM (still not touching swap, obviously) > and ZFS performance is fine. > > Now, I am seeing occasional checksum errors. I stress-tested the > heck out of the thing for a week or so (filled up the > filesystem, then deleted most the junk I used for that, etc) and > when I ran a scrub it found 12 of them. I'm assuming that since > I am running multiple redundancies that that's not a huge > problem. Is this correct? Should I cronjob a scrub once a month? > > I'm pretty gald I didn't need to move away from ZFS... > > -- > _______________________________________________ > TCLUG Mailing List - Minneapolis/St. Paul, Minnesota > tclug-list at mn-linux.org > http://mailman.mn-linux.org/mailman/listinfo/tclug-list > > > >