Date: Wed, 1 Dec 2010 00:54:37 +0000 From: Bruce Cran <bruce@cran.org.uk> To: freebsd-fs@freebsd.org Subject: ZFS hang during reboot after updating / to rw Message-ID: <20101201005437.GA18296@muon.cran.org.uk>
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Hi, I don't know if I'm doing something wrong, but I've found a way to reliably hang the system during reboot - I'm running the latest HEAD amd64 with ZFS on all the filesystems. After booting into single-user mode I wanted to mount all the filesystems rw so I did: # mount -a (realised I needed to use "zfs mount -a" instead) # zfs mount -a (/ is still ro, so update it to rw) # mount -u -o rw / Then, when rebooting the reboot task got stuck with the following backtrace: sched_switch() mi_switch() sleepq_switch() sleepq_wait() _sleep() zfsvfs_teardown() zfs_unmount() dounmount() vfs_unmountall() kern_reboot() reboot() syscallenter() syscall() Xfast_syscall() -- Bruce Cran
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