Date: Sat, 30 Sep 2017 18:30:30 +0200 From: Harry Schmalzbauer <freebsd@omnilan.de> To: freebsd-stable@freebsd.org Subject: panic: Solaris(panic): blkptr invalid CHECKSUM1 Message-ID: <59CFC6A6.6030600@omnilan.de>
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Bad surprise. Most likely I forgot to stop a PCIe-Passthrough NIC before shutting down that (byhve(8)) guest – jhb@ helped my identifying this as the root cause for sever memory corruptions I regularly had (on stable-11). Now this time, corruption affected ZFS's RAM area, obviously. What I haven't expected is the panic. The machine has memory disk as root, so luckily I still can boot (from ZFS, –> mdpreload rootfs) into single user mode, but early rc stage (most likely mounting ZFS datasets) leads to the following panic: Trying to mount root from ufs:/dev/ufs/cetusROOT []... panic: Solaris(panic): blkptr at 0xfffffe0005b6b000 has invalid CHECKSUM 1 cpuid = 1 KDB: stack backtrace: #0 0xffffffff805e3837 at kdb_backtrace+0x67 #1 0xffffffff805a2286 at vpanic+0x186 #2 0xffffffff805a20f3 at panic+0x43 #3 0xffffffff81570192 at vcmn_err+0xc2 #4 0xffffffff812d7dda at zfs_panic_recover+0x5a #5 0xffffffff812ff49b at zfs_blkptr_verify+0x8b #6 0xffffffff812ff72c at zio_read+0x2c #7 0xffffffff812761de at arc_read+0x6de #8 0xffffffff81298b4d at traverse_prefetch_metadata+0xbd #9 0xffffffff812980ed at traverse_visitbp+0x39d #10 0xffffffff81298c27 at traverse_dnode+0xc7 #11 0xffffffff812984a3 at traverse_visitbp+0x753 #12 0xffffffff8129788b at traverse_impl+0x22b #13 0xffffffff81297afc at traverse_pool+0x5c #14 0xffffffff812cce06 at spa_load+0x1c06 #15 0xffffffff812cc302 at spa_load+0x1102 #16 0xffffffff812cac6e at spa_load_best+0x6e #17 0xffffffff812c73a1 at spa_open_common+0x101 Uptime: 37s Dumping 1082 out of 15733 MB:..2%..… Dump complete mps0: Sending StopUnit: path (xpt0:mps0:0:2:ffffffff): handle 12 mps0: Incrementing SSU count … Haven't done any scrub attempts yet – expectation is to get all datasets of the striped mirror pool back... Any hints highly appreciated. -harry
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