Date: Sun, 8 Sep 2013 15:17:09 +0100 From: "Steven Hartland" <killing@multiplay.co.uk> To: "Jeremie Le Hen" <jlh@FreeBSD.org>, <freebsd-current@FreeBSD.org> Subject: Re: Panic in ZFS: solaris assert: dn->dn_datablkshift != 0 Message-ID: <B1C833B7D9B246149154AADD699F4C10@multiplay.co.uk> References: <20130907123545.GK43281@caravan.chchile.org> <20130908085444.GL43281@caravan.chchile.org>
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I believe this was added by this change set:- http://svnweb.freebsd.org/base?view=revision&revision=253821 Might want to try back out that change and see if everything works after that? Regards Steve ----- Original Message ----- From: "Jeremie Le Hen" <jlh@FreeBSD.org> To: <freebsd-current@FreeBSD.org> Sent: Sunday, September 08, 2013 9:54 AM Subject: Re: Panic in ZFS: solaris assert: dn->dn_datablkshift != 0 > On Sat, Sep 07, 2013 at 02:35:45PM +0200, Jeremie Le Hen wrote: >> Hi, >> >> I have the following panic every time I do a zfs receive on a given >> dataset. >> >> For the background, I synchronize a zfs dataset every couple of minutes >> using zfs send/receive. >> >> I think I recently got a panic (I'm running mav@'s geom direct dispatch >> patch) which probably happen at a bad time and left the snapshot/data in >> an inconsistent state. Now, whenever my cron job runs, it triggers the >> panic. >> >> The process that triggers the panic is: >> zfs receive -F data/jail/caravan >> >> Probably relevant, on boot, I have the following message: >> Solaris: WARNING: can't open objset for data/jail/caravan/%recv >> >> >> I have a core around if needed to debug. I will not try to repair the >> snapshot/dataset during this weekend, to get a chance to test a patch. >> Afterward I will have to start this job again. >> >> >> panic: solaris assert: dn->dn_datablkshift != 0, file: >> /usr/src/sys/modules/zfs/../../cddl/contrib/opensolaris/uts/common/fs/zfs/dmu_tx.c, line: 638 >> cpuid = 1 >> KDB: stack backtrace: >> db_trace_self_wrapper() at db_trace_self_wrapper+0x2b/frame >> 0xfffffe00e62401a0 >> kdb_backtrace() at kdb_backtrace+0x39/frame 0xfffffe00e6240250 >> vpanic() at vpanic+0x126/frame 0xfffffe00e6240290 >> panic() at panic+0x43/frame 0xfffffe00e62402f0 >> assfail() at assfail+0x22/frame 0xfffffe00e6240300 >> dmu_tx_hold_free() at dmu_tx_hold_free+0x167/frame 0xfffffe00e62403e0 >> dmu_free_long_range() at dmu_free_long_range+0x1f5/frame >> 0xfffffe00e6240450 >> dmu_free_long_object() at dmu_free_long_object+0x1f/frame >> 0xfffffe00e6240480 >> dmu_recv_stream() at dmu_recv_stream+0x86e/frame 0xfffffe00e62406b0 >> zfs_ioc_recv() at zfs_ioc_recv+0x96c/frame 0xfffffe00e6240920 >> zfsdev_ioctl() at zfsdev_ioctl+0x54a/frame 0xfffffe00e62409c0 >> devfs_ioctl_f() at devfs_ioctl_f+0xf0/frame 0xfffffe00e6240a20 >> kern_ioctl() at kern_ioctl+0x2ca/frame 0xfffffe00e6240a90 >> sys_ioctl() at sys_ioctl+0x11f/frame 0xfffffe00e6240ae0 >> amd64_syscall() at amd64_syscall+0x265/frame 0xfffffe00e6240bf0 >> Xfast_syscall() at Xfast_syscall+0xfb/frame 0xfffffe00e6240bf0 >> --- syscall (54, FreeBSD ELF64, sys_ioctl), rip = 0x8019ddf1a, rsp = >> 0x7fffffff5c08, rbp = 0x7fffffff5c90 --- > > I rolled back my kernel arbitrarily in the past (2013/08/01). The panic > doesn't happen any more. > > I will try to narrow this down by dichotomy but that will be more > efficient if someone has a rough idea wherefrom the problem appeared. > > -- > Jeremie Le Hen > > Scientists say the world is made up of Protons, Neutrons and Electrons. > They forgot to mention Morons. > _______________________________________________ > freebsd-current@freebsd.org mailing list > http://lists.freebsd.org/mailman/listinfo/freebsd-current > To unsubscribe, send any mail to "freebsd-current-unsubscribe@freebsd.org" > ================================================ This e.mail is private and confidential between Multiplay (UK) Ltd. and the person or entity to whom it is addressed. In the event of misdirection, the recipient is prohibited from using, copying, printing or otherwise disseminating it or any information contained in it. In the event of misdirection, illegible or incomplete transmission please telephone +44 845 868 1337 or return the E.mail to postmaster@multiplay.co.uk.
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