ZFS panic: solaris assert: BP_EQUAL(bp, &zio->io_bp_orig)

[Xin Li]

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On 04/10/14 17:57, Garrett Wollman wrote:
> I have a file server that has panic()ed twice today with the 
> following:
> 
> panic: solaris assert: BP_EQUAL(bp, &zio->io_bp_orig), file:
> /usr/src/sys/modules/zfs/../../cddl/contrib/opensolaris/uts/common/fs/zfs/zio.c,
> line: 2955 cpuid = 20 KDB: stack backtrace: db_trace_self_wrapper()
> at db_trace_self_wrapper+0x2a/frame 0xffffff98a38d2900 
> kdb_backtrace() at kdb_backtrace+0x37/frame 0xffffff98a38d29c0 
> panic() at panic+0x1ce/frame 0xffffff98a38d2ac0 assfail() at
> assfail+0x1a/frame 0xffffff98a38d2ad0 zio_done() at
> zio_done+0x120/frame 0xffffff98a38d2b30 zio_execute() at
> zio_execute+0xc3/frame 0xffffff98a38d2b70 taskqueue_run_locked() at
> taskqueue_run_locked+0x74/frame 0xffffff98a38d2bc0 
> taskqueue_thread_loop() at taskqueue_thread_loop+0x46/frame
> 0xffffff98a38d2be0 fork_exit() at fork_exit+0x11f/frame
> 0xffffff98a38d2c30 fork_trampoline() at fork_trampoline+0xe/frame
> 0xffffff98a38d2c30 --- trap 0, rip = 0, rsp = 0xffffff98a38d2cf0,
> rbp = 0 --- Uptime: 11d15h27m51s Automatic reboot in 15 seconds -
> press a key on the console to abort --> Press a key on the console
> to reboot, --> or switch off the system now.
> 
> (It also failed to reboot automatically, as if a character had
> been sent to the console.)
> 
> Anyone have a guess about what's going on here?  I obviously can't 
> keep manually restarting a production file server every 14 hours. 
> Here's the code in question:
> 
> if (bp != NULL) { ASSERT(bp->blk_pad[0] == 0); 
> ASSERT(bp->blk_pad[1] == 0); ASSERT(bcmp(bp, &zio->io_bp_copy,
> sizeof (blkptr_t)) == 0 || (bp == zio_unique_parent(zio)->io_bp)); 
> if (zio->io_type == ZIO_TYPE_WRITE && !BP_IS_HOLE(bp) && 
> zio->io_bp_override == NULL && !(zio->io_flags &
> ZIO_FLAG_IO_REPAIR)) { ASSERT(!BP_SHOULD_BYTESWAP(bp)); 
> ASSERT3U(zio->io_prop.zp_copies, <=, BP_GET_NDVAS(bp)); 
> ASSERT(BP_COUNT_GANG(bp) == 0 || (BP_COUNT_GANG(bp) ==
> BP_GET_NDVAS(bp))); } if (zio->io_flags & ZIO_FLAG_NOPWRITE) 
> VERIFY(BP_EQUAL(bp, &zio->io_bp_orig)); }
> 
> And it just now panicked again.  Help!

Have you tried setting vfs.zfs.nopwrite_enabled=0 in /boot/loader.conf?

Cheers,
- -- 
Xin LI <delphij at delphij.net>    https://www.delphij.net/
FreeBSD - The Power to Serve!           Live free or die
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