Date: Wed, 21 Dec 2016 19:23:10 -0600 From: Mike Selner <mike@tela.com> To: freebsd-questions@freebsd.org Subject: ZFS crash on mountroot after removal of slog device Message-ID: <20161222012310.GA59045@spider3.tela.com>
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Hello, I have a FreeBSD 10.3 system with all filesystems on ZFS (except some tmp on SSD). I have L2ARC and SLOG on SSD. The SSD started reporting SMART errors so I removed the L2ARC device which worked fine. Then I removed the SLOG device using: zpool remove zroot gpt/ssdslog0 The system returned to the # prompt but a few minutes later the system panicked and and rebooted. After reboot it fails to mount root fs, giving the message: Trying to mount root from zfs:zroot/ROOT/default [ ]... panic: solaris assert: nvlist_lookup_uint64(configs[ i], ZPOOL_CONFIG_POOL_TXG, &txg) == 0, file: /usr/src/sys/modules/zfs/../../cddl/contrib/opensolaris/uts/common/fs/zfs/spa.c, line: 4039 cpuid = 4 Short version: I can import the pool using fixit on an install memstick, but can not get the system to mountroot when booting from this pool. Full details at https://forums.freebsd.org/threads/59006/. Please advise if I should also post full details here. Thank you -- Mike
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