Date: Thu, 30 Jul 2009 05:38:57 +0400 From: Maxim Dounin <mdounin@mdounin.ru> To: freebsd-current@freebsd.org, freebsd-fs@freebsd.org Subject: another zfs panic Message-ID: <20090730013857.GB8794@mdounin.ru>
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Hello! Here is zfs panic I'm able to reproduce by running an scp from remote machine to zfs volume and 3 parallel untars of ports tree in cycle. Not sure that everything is required, but the above workload triggers panic in several hours. This is on fresh current with GENERIC kernel: panic: sx_xlock() of destroyed sx @ /usr/src/sys/modules/zfs/../../cddl/contrib/opensolaris/uts/common/fs/zfs/zfs_rlock.c:535 cpuid = 6 KDB: enter: panic [thread pid 36 tid 100071 ] Stopped at kdb_enter+0x3d: movq $0,0x68a040(%rip) db> bt Tracing pid 36 tid 100071 td 0xffffff00040f3720 kdb_enter() at kdb_enter+0x3d panic() at panic+0x17b _sx_xlock() at _sx_xlock+0xfc zfs_range_unlock() at zfs_range_unlock+0x38 zfs_get_data() at zfs_get_data+0xc1 zil_commit() at zil_commit+0x532 zfs_sync() at zfs_sync+0xa6 sync_fsync() at sync_fsync+0x13a sync_vnode() at sync_vnode+0x157 sched_sync() at sched_sync+0x1d1 fork_exit() at fork_exit+0x12a fork_trampoline() at fork_trampoline+0xe --- trap 0, rip = 0, rsp = 0xffffff80e7ee3d30, rbp = 0 --- Machine is otherwise idle. The only zfs-related tuning applied is compression=gzip-9. Please let me know if you want me to test some patches. Maxim Dounin
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