I doubt very much that's involved; I have multiple production systems with dynamic_write_buffer turned on and I've yet to see a panic from periodic activity or anything like it.
The only panic I've got open right now that's related to ZFS happens during a send/receive backup and it's able to be reproduced only with difficulty (it looks to be a problem in snapshot management as I've isolated it fairly well but haven't yet found the root cause) -- and it can be coaxed out of a bare "clean" -STABLE install with no ZFS patches in at all. (The codepath that results in the panic doesn't have a logical connection to that patch, but I tested without it anyway just to make sure.) On 12/9/2015 15:15, Dustin Wenz wrote: > Are you by chance using the ARC patch from this PR? > > https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=187594 > > Do you have a vfs.zfs.dynamic_write_buffer tunable defined, if so, what is it > set to? > > - .Dustin > > >> On Dec 9, 2015, at 3:51 AM, Alexander Leidinger <[email protected]> >> wrote: >> >> On Wed, 09 Dec 2015 09:38:07 +0100 >> Miroslav Lachman <[email protected]> wrote: >> >>> Alexander Leidinger wrote on 12/09/2015 09:00: >>>> Does this ring a bell for someone or any ideas before I try to hunt >>>> this down? >>> The same problem was reported yesterday on Stable >>> >>> Periodic jobs triggering panics in 10.1 and 10.2 >>> https://lists.freebsd.org/pipermail/freebsd-stable/2015-December/083807.html >>> >>> Also ZFS with jails. >> The above mail has a backtrace involving ZFS. >> >> I'm running the periodic scripts serially now, 8 out of 14 already >> finished without issues. Smells like a concurrency issue. I would >> assume it's something introduced between 5 and 1 month ago and MFCed >> back to 10. >> >> Does this ring a bell for someone on fs@? >> >> Bye, >> Alexander. >> >> -- >> http://www.Leidinger.net [email protected]: PGP 0xC773696B3BAC17DC >> http://www.FreeBSD.org [email protected] : PGP 0xC773696B3BAC17DC >> _______________________________________________ >> [email protected] mailing list >> https://lists.freebsd.org/mailman/listinfo/freebsd-stable >> To unsubscribe, send any mail to "[email protected]" > _______________________________________________ > [email protected] mailing list > https://lists.freebsd.org/mailman/listinfo/freebsd-stable > To unsubscribe, send any mail to "[email protected]" -- Karl Denninger [email protected] <mailto:[email protected]> /The Market Ticker/ /[S/MIME encrypted email preferred]/
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