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Date:      Sun, 4 Mar 2018 16:59:52 -0800
From:      Bryan Drewery <bdrewery@FreeBSD.org>
To:        "current@freebsd.org" <current@freebsd.org>, FreeBSD FS <freebsd-fs@FreeBSD.org>
Subject:   ZFS panic at boot when mounting root on r330386
Message-ID:  <681cabc1-9b50-8f27-5242-5a9eb3ed3c39@FreeBSD.org>

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From: Bryan Drewery <bdrewery@FreeBSD.org>
To: "current@freebsd.org" <current@freebsd.org>,
 FreeBSD FS <freebsd-fs@FreeBSD.org>
Message-ID: <681cabc1-9b50-8f27-5242-5a9eb3ed3c39@FreeBSD.org>
Subject: ZFS panic at boot when mounting root on r330386

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> panic: solaris assert: refcount_count(&spa->spa_refcount) > spa->spa_mi=
nref || MUTEX_HELD(&spa_namespace_lock), file: /usr/src/sys/cddl/contrib/=
opensolaris/uts/common/fs/zfs/spa_misc.c, line: 952
> cpuid =3D 10
> time =3D 1520207367
> KDB: stack backtrace:
> db_trace_self_wrapper() at db_trace_self_wrapper+0x2b/frame 0xfffffe23f=
57a2420
> vpanic() at vpanic+0x18d/frame 0xfffffe23f57a2480
> panic() at panic+0x43/frame 0xfffffe23f57a24e0
> assfail() at assfail+0x1a/frame 0xfffffe23f57a24f0
> spa_close() at spa_close+0x5d/frame 0xfffffe23f57a2520
> spa_get_stats() at spa_get_stats+0x481/frame 0xfffffe23f57a2700
> zfs_ioc_pool_stats() at zfs_ioc_pool_stats+0x25/frame 0xfffffe23f57a274=
0
> zfsdev_ioctl() at zfsdev_ioctl+0x76b/frame 0xfffffe23f57a27e0
> devfs_ioctl() at devfs_ioctl+0xcb/frame 0xfffffe23f57a2830
> VOP_IOCTL_APV() at VOP_IOCTL_APV+0x102/frame 0xfffffe23f57a2860
> vn_ioctl() at vn_ioctl+0x124/frame 0xfffffe23f57a2970
> devfs_ioctl_f() at devfs_ioctl_f+0x1f/frame 0xfffffe23f57a2990
> kern_ioctl() at kern_ioctl+0x2c2/frame 0xfffffe23f57a29f0
> sys_ioctl() at sys_ioctl+0x15c/frame 0xfffffe23f57a2ac0
> amd64_syscall() at amd64_syscall+0x786/frame 0xfffffe23f57a2bf0
> fast_syscall_common() at fast_syscall_common+0x101/frame 0xfffffe23f57a=
2bf0
> --- syscall (54, FreeBSD ELF64, sys_ioctl), rip =3D 0x80049afda, rsp =3D=
 0x7fffffffbd18, rbp =3D 0x7fffffffbd90 ---
> KDB: enter: panic
> [ thread pid 56 tid 100606 ]
> Stopped at      kdb_enter+0x3b: movq    $0,kdb_why
> db>

It seems like a race as I can get it to boot sometimes.

--=20
Regards,
Bryan Drewery


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