On Sun, 22 Apr 2007, Scott Long wrote: > This is actually a problem with the ATA driver, not ZFS. I think people are > also seeing it under VMWare. The ATA driver is misusing semaphores in a way > that isn't reliable in the emulated environment. I saw what sounds like an identical panic in Parallels last week, and sent a screenshot off to Soren. He asked me to follow up with more specific version information but I've not yet been able to do that. Robert N M Watson Computer Laboratory University of Cambridge > > Scott > > > Ollivier Robert wrote: >> Hello, >> >> I'm running CURRENT inside a Parallels VM and I am getting regular panic >> when writing to a ZFS raidz pool. UMA is complaining and panic(). >> >> It is rather easy to reproduce (cvs update, rsync all generates such >> panics). Another interesing point is that it always occurs after >> FLUSHCACHE TIMEOUT messages. >> >> The pool is made of 3 slices ad0s2 ad0s3 from the first virtual disk and >> ad2s1 from a second virtual disk (to get 3 "disks" for raidz). >> >> Filesystem 1024-blocks Used Avail Capacity Mounted on >> /dev/ad0s1a 9647558 2708134 6167620 31% / >> devfs 1 1 0 100% /dev >> tank/home 19787392 128 19787264 0% /home >> tank 19787264 0 19787264 0% /tank >> tank/usr 19902336 115072 19787264 1% /tank/usr >> tank/usr/obj 19787264 0 19787264 0% >> /tank/usr/obj >> tank/usr/ports 19796224 8960 19787264 0% >> /tank/usr/ports >> tank/usr/ports/distfiles 19787264 0 19787264 0% >> /tank/usr/ports/distfiles >> tank/usr/src 19983360 196096 19787264 1% >> /tank/usr/src >> >> ----- >> GNU gdb 6.1.1 [FreeBSD] >> Copyright 2004 Free Software Foundation, Inc. >> GDB is free software, covered by the GNU General Public License, and you >> are >> welcome to change it and/or distribute copies of it under certain >> conditions. >> Type "show copying" to see the conditions. >> There is absolutely no warranty for GDB. Type "show warranty" for details. >> This GDB was configured as "i386-marcel-freebsd". >> >> Unread portion of the kernel message buffer: >> ad0: FAILURE - FLUSHCACHE timed out >> ad2: FAILURE - FLUSHCACHE timed out >> Slab at 0xc2b90f70, freei 18 = 0. >> panic: Duplicate free of item 0xc2b90948 from zone 0xc1061780(g_bio) >> >> cpuid = 0 >> KDB: enter: panic >> panic: from debugger >> cpuid = 0 >> Uptime: 7m28s >> Physical memory: 503 MB >> Dumping 172 MB: 157 141 125 109 93 77 61 45 29 13 >> >> #0 doadump () at pcpu.h:172 >> 172 __asm __volatile("movl %%fs:0,%0" : "=r" (td)); >> (kgdb) where >> #0 doadump () at pcpu.h:172 >> #1 0xc0525a40 in boot (howto=260) at ../../../kern/kern_shutdown.c:409 >> #2 0xc0525d4a in panic (fmt=0xc0680204 "from debugger") >> at ../../../kern/kern_shutdown.c:563 >> #3 0xc044a13e in db_panic (addr=-1068219313, have_addr=0, count=-1, >> modif=0xdceb09e0 "") at ../../../ddb/db_command.c:433 >> #4 0xc044a0d7 in db_command (last_cmdp=0xc0705f64, cmd_table=0x0) >> at ../../../ddb/db_command.c:401 >> #5 0xc044a192 in db_command_loop () at ../../../ddb/db_command.c:453 >> #6 0xc044bddd in db_trap (type=3, code=0) at ../../../ddb/db_main.c:222 >> #7 0xc0544728 in kdb_trap (type=3, code=0, tf=0xdceb0b78) >> at ../../../kern/subr_kdb.c:502 >> #8 0xc0658871 in trap (frame=0xdceb0b78) at ../../../i386/i386/trap.c:621 >> #9 0xc064319b in calltrap () at ../../../i386/i386/exception.s:139 >> #10 0xc054444f in kdb_enter (msg=0x12 <Address 0x12 out of bounds>) >> at cpufunc.h:60 >> #11 0xc0525cfc in panic ( >> fmt=0xc06ac621 "Duplicate free of item %p from zone %p(%s)\n") >> at ../../../kern/kern_shutdown.c:547 >> #12 0xc06118f4 in uma_dbg_free (zone=0xc1061780, slab=0xc2b90f70, >> item=0xc2b90948) at ../../../vm/uma_dbg.c:302 >> #13 0xc06100f3 in uma_zfree_arg (zone=0xc1061780, item=0xc2b90948, >> udata=0x0) >> at ../../../vm/uma_core.c:2261 >> #14 0xc04f207b in g_destroy_bio (bp=0xc2b90948) at uma.h:305 >> #15 0xc04f090a in g_disk_done (bp=0xc2b90948) at >> ../../../geom/geom_disk.c:209 >> #16 0xc05736e0 in biodone (bp=0xc2b90948) at ../../../kern/vfs_bio.c:3006 >> #17 0xc045f8c2 in ad_done (request=0xc2b7b480) >> at ../../../dev/ata/ata-disk.c:304 >> #18 0xc0464f50 in ata_completed (context=0xc2b7b480, dummy=0) >> at ../../../dev/ata/ata-queue.c:479 >> #19 0xc054bd0c in taskqueue_run (queue=0xc2a0a080) >> at ../../../kern/subr_taskqueue.c:255 >> #20 0xc054bea2 in taskqueue_swi_run (dummy=0x0) >> at ../../../kern/subr_taskqueue.c:297 >> #21 0xc0510f19 in ithread_execute_handlers (p=0xc299e240, ie=0xc2a0a000) >> at ../../../kern/kern_intr.c:682 >> #22 0xc0511047 in ithread_loop (arg=0xc2a12010) >> at ../../../kern/kern_intr.c:766 >> #23 0xc0510018 in fork_exit (callout=0xc0510fe0 <ithread_loop>, >> arg=0xc2a12010, frame=0xdceb0d38) at ../../../kern/kern_fork.c:814 >> #24 0xc0643210 in fork_trampoline () at ../../../i386/i386/exception.s:205 >> ----- >> >> dmesg >> ----- >> Copyright (c) 1992-2007 The FreeBSD Project. >> Copyright (c) 1979, 1980, 1983, 1986, 1988, 1989, 1991, 1992, 1993, 1994 >> The Regents of the University of California. All rights reserved. >> FreeBSD is a registered trademark of The FreeBSD Foundation. >> FreeBSD 7.0-CURRENT #0: Sun Apr 22 11:05:32 CEST 2007 >> roberto_at_vm1.keltia.net:/usr/osrc/sys/i386/compile/VM7 >> Timecounter "i8254" frequency 1193182 Hz quality 0 >> CPU: Intel(R) Core(TM)2 CPU T7600 _at_ 2.33GHz (1524.50-MHz 686-class >> CPU) >> Origin = "GenuineIntel" Id = 0x6f6 Stepping = 6 >> Features=0xf80b9b9<FPU,PSE,TSC,MSR,MCE,CX8,SEP,MTRR,PGE,CMOV,MMX,FXSR,SSE,SSE2,SS> >> Features2=0x1<SSE3> >> real memory = 536870912 (512 MB) >> avail memory = 515600384 (491 MB) >> kbd1 at kbdmux0 >> cpu0 on motherboard >> pcib0: <Intel 82815 (i815 GMCH) Host To Hub bridge> pcibus 0 on motherboard >> pir0: <PCI Interrupt Routing Table: 9 Entries> on motherboard >> pci0: <PCI bus> on pcib0 >> vgapci0: <VGA-compatible display> port 0x4000-0x40ff,0x4400-0x441f mem >> 0xc0000000-0xc0ffffff at device 2.0 on pci0 >> pci0: <bridge> at device 3.0 (no driver attached) >> ed0: <RealTek 8029> port 0x4c00-0x4c1f irq 10 at device 5.0 on pci0 >> ed0: [ITHREAD] >> ed0: using obsoleted if_watchdog interface >> ed0: Ethernet address: 00:ee:42:8a:ed:eb >> uhci0: <Intel 82801FB/FR/FW/FRW (ICH6) USB controller USB-A> port >> 0x5000-0x501f irq 11 at device 29.0 on pci0 >> uhci0: [GIANT-LOCKED] >> uhci0: [ITHREAD] >> usb0: <Intel 82801FB/FR/FW/FRW (ICH6) USB controller USB-A> on uhci0 >> usb0: USB revision 1.0 >> uhub0: <Intel UHCI root hub, class 9/0, rev 1.00/1.00, addr 1> on usb0 >> uhub0: 2 ports with 2 removable, self powered >> ehci0: <Intel 82801FB (ICH6) USB 2.0 controller> mem 0xc1000000-0xc10003ff >> irq 9 at device 29.7 on pci0 >> ehci0: [GIANT-LOCKED] >> ehci0: [ITHREAD] >> usb1: EHCI version 1.0 >> usb1: wrong number of companions (0 != 1) >> usb1: <Intel 82801FB (ICH6) USB 2.0 controller> on ehci0 >> usb1: USB revision 2.0 >> uhub1: <Intel EHCI root hub, class 9/0, rev 2.00/1.00, addr 1> on usb1 >> uhub1: 8 ports with 8 removable, self powered >> agp0: <Intel 82815 (i815 GMCH) host to PCI bridge> on hostb0 >> isab0: <PCI-ISA bridge> at device 31.0 on pci0 >> isa0: <ISA bus> on isab0 >> atapci0: <Intel ICH2 UDMA100 controller> port >> 0x1f0-0x1f7,0x3f6,0x170-0x177,0x376,0x6c00-0x6c0f at device 31.1 on pci0 >> ata0: <ATA channel 0> on atapci0 >> ata0: [ITHREAD] >> ata1: <ATA channel 1> on atapci0 >> ata1: [ITHREAD] >> pci0: <multimedia, audio> at device 31.5 (no driver attached) >> pmtimer0 on isa0 >> orm0: <ISA Option ROM> at iomem 0xc0000-0xc9fff pnpid ORM0000 on isa0 >> sc0: <System console> at flags 0x100 on isa0 >> sc0: VGA <16 virtual consoles, flags=0x300> >> vga0: <Generic ISA VGA> at port 0x3c0-0x3df iomem 0xa0000-0xbffff on isa0 >> atkbdc0: <Keyboard controller (i8042)> at port 0x60,0x64 on isa0 >> atkbd0: <AT Keyboard> irq 1 on atkbdc0 >> kbd0 at atkbd0 >> atkbd0: [GIANT-LOCKED] >> atkbd0: [ITHREAD] >> psm0: <PS/2 Mouse> irq 12 on atkbdc0 >> psm0: [GIANT-LOCKED] >> psm0: [ITHREAD] >> psm0: model IntelliMouse Explorer, device ID 4 >> sio0: configured irq 4 not in bitmap of probed irqs 0 >> sio0: port may not be enabled >> sio0: configured irq 4 not in bitmap of probed irqs 0 >> sio0: port may not be enabled >> sio0 at port 0x3f8-0x3ff irq 4 flags 0x10 on isa0 >> sio0: type 8250 or not responding >> sio0: [FILTER] >> sio1: configured irq 3 not in bitmap of probed irqs 0 >> sio1: port may not be enabled >> Timecounter "TSC" frequency 1524502532 Hz quality 800 >> Timecounters tick every 1.000 msec >> ad0: 32000MB <Virtual HDD [0] FWR10003> at ata0-master UDMA100 >> acd0: CDROM <PRL CD-ROM [1]/FWR10003> at ata0-slave PIO4 >> ad2: 10000MB <Virtual HDD [2] FWR10003> at ata1-master UDMA100 >> WARNING: ZFS is considered to be an experimental feature in FreeBSD. >> Trying to mount root from ufs:/dev/ad0s1a >> ZFS filesystem version 6 >> ZFS storage pool version 6 >> ----- >> >> VM7 >> ----- >> # >> # VM7 -- Generic kernel configuration file for FreeBSD/i386 >> # >> # $FreeBSD: src/sys/i386/conf/GENERIC,v 1.460 2006/12/13 03:41:47 yongari >> Exp $ >> >> cpu I686_CPU >> ident VM7 >> >> >> makeoptions DEBUG=-g # Build kernel with gdb(1) debug >> symbols >> >> options SCHED_4BSD # 4BSD scheduler >> options PREEMPTION # Enable kernel thread preemption >> options INET # InterNETworking >> options INET6 # IPv6 communications protocols >> options FFS # Berkeley Fast Filesystem >> options SOFTUPDATES # Enable FFS soft updates support >> options UFS_ACL # Support for access control lists >> options UFS_DIRHASH # Improve performance on big >> directories >> options COMPAT_43TTY # BSD 4.3 TTY compat [KEEP THIS!] >> options COMPAT_FREEBSD4 # Compatible with FreeBSD4 >> options COMPAT_FREEBSD5 # Compatible with FreeBSD5 >> options COMPAT_FREEBSD6 # Compatible with FreeBSD6 >> options KTRACE # ktrace(1) support >> options _KPOSIX_PRIORITY_SCHEDULING # POSIX P1003_1B real-time >> extensions >> options KBD_INSTALL_CDEV # install a CDEV entry in /dev >> options ADAPTIVE_GIANT # Giant mutex is adaptive. >> options STOP_NMI # Stop CPUS using NMI instead of IPI >> >> # Debugging for use in -current >> options KDB # Enable kernel debugger support. >> options DDB # Support DDB. >> options INVARIANTS # Enable calls of extra sanity >> checking >> options INVARIANT_SUPPORT # Extra sanity checks of internal >> structures, required by INVARIANTS >> >> # To make an SMP kernel, the next two lines are needed >> options SMP # Symmetric MultiProcessor Kernel >> device apic # I/O APIC >> >> # Bus support. >> device pci >> >> # Floppy drives >> device fdc >> >> # ATA and ATAPI devices >> device ata >> device atadisk # ATA disk drives >> device ataraid # ATA RAID drives >> device atapicd # ATAPI CDROM drives >> options ATA_STATIC_ID # Static device numbering >> >> # SCSI peripherals >> device scbus # SCSI bus (required for SCSI) >> device da # Direct Access (disks) >> device cd # CD >> device pass # Passthrough device (direct SCSI >> access) >> >> # atkbdc0 controls both the keyboard and the PS/2 mouse >> device atkbdc # AT keyboard controller >> device atkbd # AT keyboard >> device psm # PS/2 mouse >> >> device kbdmux # keyboard multiplexer >> >> device vga # VGA video card driver >> >> device splash # Splash screen and screen saver >> support >> >> # syscons is the default console driver, resembling an SCO console >> device sc >> >> device agp # support several AGP chipsets >> >> # Power management support (see NOTES for more options) >> #device apm >> # Add suspend/resume support for the i8254. >> device pmtimer >> >> # Serial (COM) ports >> device sio # 8250, 16[45]50 based serial ports >> device uart # Generic UART driver >> >> # PCI Ethernet NICs. >> device de # DEC/Intel DC21x4x (``Tulip'') >> device em # Intel PRO/1000 adapter Gigabit >> Ethernet Card >> device ixgb # Intel PRO/10GbE Ethernet Card >> device le # AMD Am7900 LANCE and Am79C9xx PCnet >> device txp # 3Com 3cR990 (``Typhoon'') >> device vx # 3Com 3c590, 3c595 (``Vortex'') >> >> # PCI Ethernet NICs that use the common MII bus controller code. >> # NOTE: Be sure to keep the 'device miibus' line in order to use these >> NICs! >> device miibus # MII bus support >> device ed # NE[12]000, SMC Ultra, 3c503, DS8390 >> cards >> >> device loop # Network loopback >> device random # Entropy device >> device ether # Ethernet support >> device tun # Packet tunnel. >> device pty # Pseudo-ttys (telnet etc) >> >> # The `bpf' device enables the Berkeley Packet Filter. >> # Be aware of the administrative consequences of enabling this! >> # Note that 'bpf' is required for DHCP. >> device bpf # Berkeley packet filter >> >> # USB support >> device uhci # UHCI PCI->USB interface >> device ohci # OHCI PCI->USB interface >> device ehci # EHCI PCI->USB interface (USB 2.0) >> device usb # USB Bus (required) >> device ugen # Generic >> device ukbd # Keyboard >> device umass # Disks/Mass storage - Requires scbus >> and da >> device ums # Mouse >> >> # FireWire support >> device firewire # FireWire bus code >> device sbp # SCSI over FireWire (Requires scbus >> and da) >> device fwe # Ethernet over FireWire >> (non-standard!) >> ----- > > _______________________________________________ > freebsd-current_at_freebsd.org mailing list > http://lists.freebsd.org/mailman/listinfo/freebsd-current > To unsubscribe, send any mail to "freebsd-current-unsubscribe_at_freebsd.org" >Received on Sun Apr 22 2007 - 10:26:47 UTC
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