Hello Neil, I am sorry for such a late response. I still hope we will be able to get to the bottom of this. (I also have several other issues & questions, but meanwhile I am managing by digging through mdadm code). Here are the stacks of the relevant processes: md1123_raid5: [<ffffffff8105f08a>] __cond_resched+0x2a/0x40 [<ffffffffa006a17d>] raid5d+0x17d/0x1f0 [raid456] [<ffffffff8148c516>] md_thread+0x116/0x150 [<ffffffff810871f6>] kthread+0x96/0xa0 [<ffffffff8100cde4>] kernel_thread_helper+0x4/0x10 [<ffffffffffffffff>] 0xffffffffffffffff md1123_resync: [<ffffffff8148c4f7>] md_thread+0xf7/0x150 [<ffffffff810871f6>] kthread+0x96/0xa0 [<ffffffff8100cde4>] kernel_thread_helper+0x4/0x10 [<ffffffffffffffff>] 0xffffffffffffffff Another suspicious process: /sbin/blkid -o udev -p /dev/md1123 [<ffffffff8110b470>] sync_page+0x40/0x50 [<ffffffff8110b48e>] sync_page_killable+0xe/0x40 [<ffffffff8110b397>] __lock_page_killable+0x67/0x70 [<ffffffff8110c547>] do_generic_file_read.clone.23+0x297/0x450 [<ffffffff8110d1ba>] generic_file_aio_read+0x1ca/0x240 [<ffffffff81164c82>] do_sync_read+0xd2/0x110 [<ffffffff81165463>] vfs_read+0xc3/0x180 [<ffffffff81165571>] sys_read+0x51/0x90 [<ffffffff8100bfc2>] system_call_fastpath+0x16/0x1b [<ffffffffffffffff>] 0xffffffffffffffff And here is the output of sysrq-trigger (long): root@c-11:~# echo w > /proc/sysrq-trigger root@c-11:~# dmesg [ 0.000000] Initializing cgroup subsys cpuset [ 0.000000] Initializing cgroup subsys cpu [ 0.000000] Linux version 2.6.38-8-server (buildd@allspice) (gcc version 4.5.2 (Ubuntu/Linaro 4.5.2-8ubuntu3) ) #42-Ubuntu SMP Mon Apr 11 03:49:04 UTC 2011 (Ubuntu 2.6.38-8.42-server 2.6.38.2) [ 0.000000] Command line: BOOT_IMAGE=/boot/vmlinuz-2.6.38-8-server root=UUID=01671ce6-dddb-481b-a8e5-818bbb7f83f3 ro quiet [ 0.000000] BIOS-provided physical RAM map: [ 0.000000] BIOS-e820: 0000000000000000 - 000000000009f400 (usable) [ 0.000000] BIOS-e820: 000000000009f400 - 00000000000a0000 (reserved) [ 0.000000] BIOS-e820: 00000000000f0000 - 0000000000100000 (reserved) [ 0.000000] BIOS-e820: 0000000000100000 - 00000000bfffd000 (usable) [ 0.000000] BIOS-e820: 00000000bfffd000 - 00000000c0000000 (reserved) [ 0.000000] BIOS-e820: 00000000feffc000 - 00000000ff000000 (reserved) [ 0.000000] BIOS-e820: 00000000fffc0000 - 0000000100000000 (reserved) [ 0.000000] NX (Execute Disable) protection: active [ 0.000000] DMI 2.4 present. [ 0.000000] DMI: Bochs Bochs, BIOS Bochs 01/01/2007 [ 0.000000] e820 update range: 0000000000000000 - 0000000000010000 (usable) ==> (reserved) [ 0.000000] e820 remove range: 00000000000a0000 - 0000000000100000 (usable) [ 0.000000] No AGP bridge found [ 0.000000] last_pfn = 0xbfffd max_arch_pfn = 0x400000000 [ 0.000000] MTRR default type: write-back [ 0.000000] MTRR fixed ranges enabled: [ 0.000000] 00000-9FFFF write-back [ 0.000000] A0000-BFFFF uncachable [ 0.000000] C0000-FFFFF write-protect [ 0.000000] MTRR variable ranges enabled: [ 0.000000] 0 base 00E0000000 mask FFE0000000 uncachable [ 0.000000] 1 disabled [ 0.000000] 2 disabled [ 0.000000] 3 disabled [ 0.000000] 4 disabled [ 0.000000] 5 disabled [ 0.000000] 6 disabled [ 0.000000] 7 disabled [ 0.000000] PAT not supported by CPU. [ 0.000000] found SMP MP-table at [ffff8800000fd790] fd790 [ 0.000000] initial memory mapped : 0 - 20000000 [ 0.000000] init_memory_mapping: 0000000000000000-00000000bfffd000 [ 0.000000] 0000000000 - 00bfe00000 page 2M [ 0.000000] 00bfe00000 - 00bfffd000 page 4k [ 0.000000] kernel direct mapping tables up to bfffd000 @ 1fffb000-20000000 [ 0.000000] RAMDISK: 364ac000 - 3724e000 [ 0.000000] ACPI: RSDP 00000000000fd740 00014 (v00 BOCHS ) [ 0.000000] ACPI: RSDT 00000000bfffdc40 00034 (v01 BOCHS BXPCRSDT 00000001 BXPC 00000001) [ 0.000000] ACPI: FACP 00000000bffffe70 00074 (v01 BOCHS BXPCFACP 00000001 BXPC 00000001) [ 0.000000] ACPI: DSDT 00000000bfffde40 01FB7 (v01 BXPC BXDSDT 00000001 INTL 20090123) [ 0.000000] ACPI: FACS 00000000bffffe00 00040 [ 0.000000] ACPI: SSDT 00000000bfffdda0 0009E (v01 BOCHS BXPCSSDT 00000001 BXPC 00000001) [ 0.000000] ACPI: APIC 00000000bfffdcc0 00072 (v01 BOCHS BXPCAPIC 00000001 BXPC 00000001) [ 0.000000] ACPI: HPET 00000000bfffdc80 00038 (v01 BOCHS BXPCHPET 00000001 BXPC 00000001) [ 0.000000] ACPI: Local APIC address 0xfee00000 [ 0.000000] No NUMA configuration found [ 0.000000] Faking a node at 0000000000000000-00000000bfffd000 [ 0.000000] Initmem setup node 0 0000000000000000-00000000bfffd000 [ 0.000000] NODE_DATA [00000000bfff8000 - 00000000bfffcfff] [ 0.000000] kvm-clock: Using msrs 12 and 11 [ 0.000000] kvm-clock: cpu 0, msr 0:1adfc81, boot clock [ 0.000000] [ffffea0000000000-ffffea00029fffff] PMD -> [ffff8800bc600000-ffff8800beffffff] on node 0 [ 0.000000] Zone PFN ranges: [ 0.000000] DMA 0x00000010 -> 0x00001000 [ 0.000000] DMA32 0x00001000 -> 0x00100000 [ 0.000000] Normal empty [ 0.000000] Movable zone start PFN for each node [ 0.000000] early_node_map[2] active PFN ranges [ 0.000000] 0: 0x00000010 -> 0x0000009f [ 0.000000] 0: 0x00000100 -> 0x000bfffd [ 0.000000] On node 0 totalpages: 786316 [ 0.000000] DMA zone: 56 pages used for memmap [ 0.000000] DMA zone: 6 pages reserved [ 0.000000] DMA zone: 3921 pages, LIFO batch:0 [ 0.000000] DMA32 zone: 10696 pages used for memmap [ 0.000000] DMA32 zone: 771637 pages, LIFO batch:31 [ 0.000000] ACPI: PM-Timer IO Port: 0xb008 [ 0.000000] ACPI: Local APIC address 0xfee00000 [ 0.000000] ACPI: LAPIC (acpi_id[0x00] lapic_id[0x00] enabled) [ 0.000000] ACPI: IOAPIC (id[0x01] address[0xfec00000] gsi_base[0]) [ 0.000000] IOAPIC[0]: apic_id 1, version 17, address 0xfec00000, GSI 0-23 [ 0.000000] ACPI: INT_SRC_OVR (bus 0 bus_irq 0 global_irq 2 dfl dfl) [ 0.000000] ACPI: INT_SRC_OVR (bus 0 bus_irq 5 global_irq 5 high level) [ 0.000000] ACPI: INT_SRC_OVR (bus 0 bus_irq 9 global_irq 9 high level) [ 0.000000] ACPI: INT_SRC_OVR (bus 0 bus_irq 10 global_irq 10 high level) [ 0.000000] ACPI: INT_SRC_OVR (bus 0 bus_irq 11 global_irq 11 high level) [ 0.000000] ACPI: IRQ0 used by override. [ 0.000000] ACPI: IRQ2 used by override. [ 0.000000] ACPI: IRQ5 used by override. [ 0.000000] ACPI: IRQ9 used by override. [ 0.000000] ACPI: IRQ10 used by override. [ 0.000000] ACPI: IRQ11 used by override. [ 0.000000] Using ACPI (MADT) for SMP configuration information [ 0.000000] ACPI: HPET id: 0x8086a201 base: 0xfed00000 [ 0.000000] SMP: Allowing 1 CPUs, 0 hotplug CPUs [ 0.000000] nr_irqs_gsi: 40 [ 0.000000] PM: Registered nosave memory: 000000000009f000 - 00000000000a0000 [ 0.000000] PM: Registered nosave memory: 00000000000a0000 - 00000000000f0000 [ 0.000000] PM: Registered nosave memory: 00000000000f0000 - 0000000000100000 [ 0.000000] Allocating PCI resources starting at c0000000 (gap: c0000000:3effc000) [ 0.000000] Booting paravirtualized kernel on KVM [ 0.000000] setup_percpu: NR_CPUS:256 nr_cpumask_bits:256 nr_cpu_ids:1 nr_node_ids:1 [ 0.000000] PERCPU: Embedded 28 pages/cpu @ffff8800bfc00000 s84416 r8192 d22080 u2097152 [ 0.000000] pcpu-alloc: s84416 r8192 d22080 u2097152 alloc=1*2097152 [ 0.000000] pcpu-alloc: [0] 0 [ 0.000000] kvm-clock: cpu 0, msr 0:bfc13c81, primary cpu clock [ 0.000000] Built 1 zonelists in Node order, mobility grouping on. Total pages: 775558 [ 0.000000] Policy zone: DMA32 [ 0.000000] Kernel command line: BOOT_IMAGE=/boot/vmlinuz-2.6.38-8-server root=UUID=01671ce6-dddb-481b-a8e5-818bbb7f83f3 ro quiet [ 0.000000] PID hash table entries: 4096 (order: 3, 32768 bytes) [ 0.000000] Checking aperture... [ 0.000000] No AGP bridge found [ 0.000000] Calgary: detecting Calgary via BIOS EBDA area [ 0.000000] Calgary: Unable to locate Rio Grande table in EBDA - bailing! [ 0.000000] Memory: 3074544k/3145716k available (6023k kernel code, 452k absent, 70720k reserved, 5025k data, 880k init) [ 0.000000] SLUB: Genslabs=15, HWalign=64, Order=0-3, MinObjects=0, CPUs=1, Nodes=1 [ 0.000000] Hierarchical RCU implementation. [ 0.000000] RCU dyntick-idle grace-period acceleration is enabled. [ 0.000000] RCU-based detection of stalled CPUs is disabled. [ 0.000000] NR_IRQS:16640 nr_irqs:256 16 [ 0.000000] Console: colour dummy device 80x25 [ 0.000000] console [tty0] enabled [ 0.000000] allocated 31457280 bytes of page_cgroup [ 0.000000] please try 'cgroup_disable=memory' option if you don't want memory cgroups [ 0.000000] hpet clockevent registered [ 0.000000] Detected 2400.084 MHz processor. [ 0.010000] Calibrating delay loop (skipped) preset value.. 4800.16 BogoMIPS (lpj=24000840) [ 0.010000] pid_max: default: 32768 minimum: 301 [ 0.010000] Security Framework initialized [ 0.010000] AppArmor: AppArmor initialized [ 0.010000] Yama: becoming mindful. [ 0.010000] Dentry cache hash table entries: 524288 (order: 10, 4194304 bytes) [ 0.010000] Inode-cache hash table entries: 262144 (order: 9, 2097152 bytes) [ 0.010000] Mount-cache hash table entries: 256 [ 0.010000] Initializing cgroup subsys ns [ 0.010000] ns_cgroup deprecated: consider using the 'clone_children' flag without the ns_cgroup. [ 0.010000] Initializing cgroup subsys cpuacct [ 0.010000] Initializing cgroup subsys memory [ 0.010000] Initializing cgroup subsys devices [ 0.010000] Initializing cgroup subsys freezer [ 0.010000] Initializing cgroup subsys net_cls [ 0.010000] Initializing cgroup subsys blkio [ 0.010014] mce: CPU supports 10 MCE banks [ 0.010215] SMP alternatives: switching to UP code [ 0.043346] Freeing SMP alternatives: 20k freed [ 0.043368] ACPI: Core revision 20110112 [ 0.044515] ftrace: allocating 24611 entries in 97 pages [ 0.050203] Setting APIC routing to flat [ 0.060204] ..TIMER: vector=0x30 apic1=0 pin1=2 apic2=-1 pin2=-1 [ 0.060207] CPU0: Intel QEMU Virtual CPU version 0.14.0 stepping 03 [ 0.070000] Performance Events: unsupported p6 CPU model 2 no PMU driver, software events only. [ 0.070000] Brought up 1 CPUs [ 0.070000] Total of 1 processors activated (4800.16 BogoMIPS). [ 0.070000] devtmpfs: initialized [ 0.070000] print_constraints: dummy: [ 0.070000] Time: 8:12:59 Date: 07/17/11 [ 0.070000] NET: Registered protocol family 16 [ 0.070000] ACPI: bus type pci registered [ 0.070000] PCI: Using configuration type 1 for base access [ 0.070000] bio: create slab <bio-0> at 0 [ 0.070000] ACPI: EC: Look up EC in DSDT [ 0.070000] ACPI: Interpreter enabled [ 0.070000] ACPI: (supports S0 S3 S4 S5) [ 0.070000] ACPI: Using IOAPIC for interrupt routing [ 0.072133] ACPI: No dock devices found. [ 0.072136] HEST: Table not found. [ 0.072139] PCI: Ignoring host bridge windows from ACPI; if necessary, use "pci=use_crs" and report a bug [ 0.072159] ACPI: PCI Root Bridge [PCI0] (domain 0000 [bus 00-ff]) [ 0.072227] pci_root PNP0A03:00: host bridge window [io 0x0000-0x0cf7] (ignored) [ 0.072230] pci_root PNP0A03:00: host bridge window [io 0x0d00-0xffff] (ignored) [ 0.072233] pci_root PNP0A03:00: host bridge window [mem 0x000a0000-0x000bffff] (ignored) [ 0.072236] pci_root PNP0A03:00: host bridge window [mem 0xe0000000-0xfebfffff] (ignored) [ 0.072281] pci 0000:00:00.0: [8086:1237] type 0 class 0x000600 [ 0.072576] pci 0000:00:01.0: [8086:7000] type 0 class 0x000601 [ 0.072946] pci 0000:00:01.1: [8086:7010] type 0 class 0x000101 [ 0.073172] pci 0000:00:01.1: reg 20: [io 0xc000-0xc00f] [ 0.073360] pci 0000:00:01.3: [8086:7113] type 0 class 0x000680 [ 0.073690] pci 0000:00:01.3: quirk: [io 0xb000-0xb03f] claimed by PIIX4 ACPI [ 0.073702] pci 0000:00:01.3: quirk: [io 0xb100-0xb10f] claimed by PIIX4 SMB [ 0.073832] pci 0000:00:02.0: [1013:00b8] type 0 class 0x000300 [ 0.100094] pci 0000:00:02.0: reg 10: [mem 0xf0000000-0xf1ffffff pref] [ 0.127422] pci 0000:00:02.0: reg 14: [mem 0xf2000000-0xf2000fff] [ 0.250107] pci 0000:00:02.0: reg 30: [mem 0xf2010000-0xf201ffff pref] [ 0.250340] pci 0000:00:03.0: [1af4:1000] type 0 class 0x000200 [ 0.250464] pci 0000:00:03.0: reg 10: [io 0xc020-0xc03f] [ 0.250529] pci 0000:00:03.0: reg 14: [mem 0xf2020000-0xf2020fff] [ 0.251074] pci 0000:00:04.0: [1af4:1000] type 0 class 0x000200 [ 0.251186] pci 0000:00:04.0: reg 10: [io 0xc040-0xc05f] [ 0.251251] pci 0000:00:04.0: reg 14: [mem 0xf2021000-0xf2021fff] [ 0.251786] pci 0000:00:05.0: [1000:0012] type 0 class 0x000100 [ 0.251910] pci 0000:00:05.0: reg 10: [io 0xc100-0xc1ff] [ 0.252007] pci 0000:00:05.0: reg 14: [mem 0xf2022000-0xf20223ff] [ 0.252102] pci 0000:00:05.0: reg 18: [mem 0xf2024000-0xf2025fff] [ 0.252557] pci 0000:00:06.0: [1000:0012] type 0 class 0x000100 [ 0.252679] pci 0000:00:06.0: reg 10: [io 0xc200-0xc2ff] [ 0.252776] pci 0000:00:06.0: reg 14: [mem 0xf2026000-0xf20263ff] [ 0.252873] pci 0000:00:06.0: reg 18: [mem 0xf2028000-0xf2029fff] [ 0.253536] ACPI: PCI Interrupt Routing Table [\_SB_.PCI0._PRT] [ 0.260690] ACPI: PCI Interrupt Link [LNKA] (IRQs 5 *10 11) [ 0.260801] ACPI: PCI Interrupt Link [LNKB] (IRQs 5 *10 11) [ 0.260899] ACPI: PCI Interrupt Link [LNKC] (IRQs 5 10 *11) [ 0.260994] ACPI: PCI Interrupt Link [LNKD] (IRQs 5 10 *11) [ 0.261096] ACPI: PCI Interrupt Link [LNKS] (IRQs 9) *0 [ 0.261475] vgaarb: device added: PCI:0000:00:02.0,decodes=io+mem,owns=io+mem,locks=none [ 0.261481] vgaarb: loaded [ 0.261891] SCSI subsystem initialized [ 0.262155] libata version 3.00 loaded. [ 0.262284] usbcore: registered new interface driver usbfs [ 0.262304] usbcore: registered new interface driver hub [ 0.262363] usbcore: registered new device driver usb [ 0.262596] wmi: Mapper loaded [ 0.262603] PCI: Using ACPI for IRQ routing [ 0.262613] PCI: pci_cache_line_size set to 64 bytes [ 0.262807] reserve RAM buffer: 000000000009f400 - 000000000009ffff [ 0.262813] reserve RAM buffer: 00000000bfffd000 - 00000000bfffffff [ 0.263061] NetLabel: Initializing [ 0.263066] NetLabel: domain hash size = 128 [ 0.263068] NetLabel: protocols = UNLABELED CIPSOv4 [ 0.263094] NetLabel: unlabeled traffic allowed by default [ 0.263195] HPET: 3 timers in total, 0 timers will be used for per-cpu timer [ 0.263227] hpet0: at MMIO 0xfed00000, IRQs 2, 8, 0 [ 0.263232] hpet0: 3 comparators, 64-bit 100.000000 MHz counter [ 0.270100] Switching to clocksource kvm-clock [ 0.279933] Switched to NOHz mode on CPU #0 [ 0.285977] AppArmor: AppArmor Filesystem Enabled [ 0.286009] pnp: PnP ACPI init [ 0.286029] ACPI: bus type pnp registered [ 0.286070] pnp 00:00: [bus 00-ff] [ 0.286074] pnp 00:00: [io 0x0cf8-0x0cff] [ 0.286077] pnp 00:00: [io 0x0000-0x0cf7 window] [ 0.286079] pnp 00:00: [io 0x0d00-0xffff window] [ 0.286082] pnp 00:00: [mem 0x000a0000-0x000bffff window] [ 0.286085] pnp 00:00: [mem 0xe0000000-0xfebfffff window] [ 0.286131] pnp 00:00: Plug and Play ACPI device, IDs PNP0a03 (active) [ 0.286214] pnp 00:01: [io 0x0070-0x0071] [ 0.286268] pnp 00:01: [irq 8] [ 0.286271] pnp 00:01: [io 0x0072-0x0077] [ 0.286321] pnp 00:01: Plug and Play ACPI device, IDs PNP0b00 (active) [ 0.286366] pnp 00:02: [io 0x0060] [ 0.286368] pnp 00:02: [io 0x0064] [ 0.286399] pnp 00:02: [irq 1] [ 0.286438] pnp 00:02: Plug and Play ACPI device, IDs PNP0303 (active) [ 0.286496] pnp 00:03: [irq 12] [ 0.286549] pnp 00:03: Plug and Play ACPI device, IDs PNP0f13 (active) [ 0.286594] pnp 00:04: [io 0x03f2-0x03f5] [ 0.286596] pnp 00:04: [io 0x03f7] [ 0.286626] pnp 00:04: [irq 6] [ 0.286628] pnp 00:04: [dma 2] [ 0.286667] pnp 00:04: Plug and Play ACPI device, IDs PNP0700 (active) [ 0.286741] pnp 00:05: [io 0x0378-0x037f] [ 0.286771] pnp 00:05: [irq 7] [ 0.286825] pnp 00:05: Plug and Play ACPI device, IDs PNP0400 (active) [ 0.286931] pnp 00:06: [io 0x03f8-0x03ff] [ 0.286962] pnp 00:06: [irq 4] [ 0.287003] pnp 00:06: Plug and Play ACPI device, IDs PNP0501 (active) [ 0.287071] pnp 00:07: [mem 0xfed00000-0xfed003ff] [ 0.287111] pnp 00:07: Plug and Play ACPI device, IDs PNP0103 (active) [ 0.287321] pnp: PnP ACPI: found 8 devices [ 0.287323] ACPI: ACPI bus type pnp unregistered [ 0.294697] pci_bus 0000:00: resource 0 [io 0x0000-0xffff] [ 0.294701] pci_bus 0000:00: resource 1 [mem 0x00000000-0xffffffffff] [ 0.294761] NET: Registered protocol family 2 [ 0.295003] IP route cache hash table entries: 131072 (order: 8, 1048576 bytes) [ 0.297429] TCP established hash table entries: 524288 (order: 11, 8388608 bytes) [ 0.308286] TCP bind hash table entries: 65536 (order: 8, 1048576 bytes) [ 0.309607] TCP: Hash tables configured (established 524288 bind 65536) [ 0.309613] TCP reno registered [ 0.309624] UDP hash table entries: 2048 (order: 4, 65536 bytes) [ 0.309732] UDP-Lite hash table entries: 2048 (order: 4, 65536 bytes) [ 0.309950] NET: Registered protocol family 1 [ 0.309979] pci 0000:00:00.0: Limiting direct PCI/PCI transfers [ 0.310039] pci 0000:00:01.0: PIIX3: Enabling Passive Release [ 0.310070] pci 0000:00:01.0: Activating ISA DMA hang workarounds [ 0.310114] pci 0000:00:02.0: Boot video device [ 0.310164] PCI: CLS 0 bytes, default 64 [ 0.310648] audit: initializing netlink socket (disabled) [ 0.310665] type=2000 audit(1310890380.310:1): initialized [ 0.329649] Trying to unpack rootfs image as initramfs... [ 0.343100] HugeTLB registered 2 MB page size, pre-allocated 0 pages [ 0.345720] VFS: Disk quotas dquot_6.5.2 [ 0.345818] Dquot-cache hash table entries: 512 (order 0, 4096 bytes) [ 0.350221] fuse init (API version 7.16) [ 0.350363] msgmni has been set to 6005 [ 0.360437] Block layer SCSI generic (bsg) driver version 0.4 loaded (major 253) [ 0.360489] io scheduler noop registered [ 0.360491] io scheduler deadline registered (default) [ 0.360558] io scheduler cfq registered [ 0.360691] pci_hotplug: PCI Hot Plug PCI Core version: 0.5 [ 0.360729] pciehp: PCI Express Hot Plug Controller Driver version: 0.4 [ 0.360835] efifb: probing for efifb [ 0.360960] efifb: framebuffer at 0xf0000000, mapped to 0xffffc90001080000, using 1408k, total 1408k [ 0.360963] efifb: mode is 800x600x24, linelength=2400, pages=1 [ 0.360965] efifb: scrolling: redraw [ 0.360970] efifb: Truecolor: size=0:8:8:8, shift=0:16:8:0 [ 0.364483] Console: switching to colour frame buffer device 100x37 [ 0.367114] fb0: EFI VGA frame buffer device [ 0.367280] input: Power Button as /devices/LNXSYSTM:00/LNXPWRBN:00/input/input0 [ 0.367298] ACPI: Power Button [PWRF] [ 0.367787] ACPI: acpi_idle registered with cpuidle [ 0.368885] ERST: Table is not found! [ 0.369113] ACPI: PCI Interrupt Link [LNKC] enabled at IRQ 11 [ 0.369154] virtio-pci 0000:00:03.0: PCI INT A -> Link[LNKC] -> GSI 11 (level, high) -> IRQ 11 [ 0.369195] virtio-pci 0000:00:03.0: setting latency timer to 64 [ 0.369468] ACPI: PCI Interrupt Link [LNKD] enabled at IRQ 10 [ 0.369501] virtio-pci 0000:00:04.0: PCI INT A -> Link[LNKD] -> GSI 10 (level, high) -> IRQ 10 [ 0.369532] virtio-pci 0000:00:04.0: setting latency timer to 64 [ 0.369692] Serial: 8250/16550 driver, 32 ports, IRQ sharing enabled [ 0.391693] serial8250: ttyS0 at I/O 0x3f8 (irq = 4) is a 16550A [ 0.415046] 00:06: ttyS0 at I/O 0x3f8 (irq = 4) is a 16550A [ 0.415314] Linux agpgart interface v0.103 [ 0.417096] brd: module loaded [ 0.417940] loop: module loaded [ 0.418050] i2c-core: driver [adp5520] using legacy suspend method [ 0.418053] i2c-core: driver [adp5520] using legacy resume method [ 0.470377] ACPI: PCI Interrupt Link [LNKA] enabled at IRQ 10 [ 0.470385] sym53c8xx 0000:00:05.0: PCI INT A -> Link[LNKA] -> GSI 10 (level, high) -> IRQ 10 [ 0.471958] sym0: <895a> rev 0x0 at pci 0000:00:05.0 irq 10 [ 0.482464] sym0: No NVRAM, ID 7, Fast-40, LVD, parity checking [ 0.490019] sym0: SCSI BUS has been reset. [ 0.492876] scsi0 : sym-2.2.3 [ 0.500347] ACPI: PCI Interrupt Link [LNKB] enabled at IRQ 11 [ 0.500353] sym53c8xx 0000:00:06.0: PCI INT A -> Link[LNKB] -> GSI 11 (level, high) -> IRQ 11 [ 0.501884] sym1: <895a> rev 0x0 at pci 0000:00:06.0 irq 11 [ 0.512272] sym1: No NVRAM, ID 7, Fast-40, LVD, parity checking [ 0.520021] sym1: SCSI BUS has been reset. [ 0.522707] scsi1 : sym-2.2.3 [ 0.530183] ata_piix 0000:00:01.1: version 2.13 [ 0.530331] ata_piix 0000:00:01.1: setting latency timer to 64 [ 0.530964] scsi2 : ata_piix [ 0.540221] scsi3 : ata_piix [ 0.540303] ata1: PATA max MWDMA2 cmd 0x1f0 ctl 0x3f6 bmdma 0xc000 irq 14 [ 0.540307] ata2: PATA max MWDMA2 cmd 0x170 ctl 0x376 bmdma 0xc008 irq 15 [ 0.540768] Fixed MDIO Bus: probed [ 0.540818] PPP generic driver version 2.4.2 [ 0.540908] tun: Universal TUN/TAP device driver, 1.6 [ 0.540910] tun: (C) 1999-2004 Max Krasnyansky <maxk@xxxxxxxxxxxx> [ 0.541189] virtio-pci 0000:00:03.0: irq 40 for MSI/MSI-X [ 0.541215] virtio-pci 0000:00:03.0: irq 41 for MSI/MSI-X [ 0.541241] virtio-pci 0000:00:03.0: irq 42 for MSI/MSI-X [ 0.544222] virtio-pci 0000:00:04.0: irq 43 for MSI/MSI-X [ 0.544251] virtio-pci 0000:00:04.0: irq 44 for MSI/MSI-X [ 0.544277] virtio-pci 0000:00:04.0: irq 45 for MSI/MSI-X [ 0.546511] ehci_hcd: USB 2.0 'Enhanced' Host Controller (EHCI) Driver [ 0.546548] ohci_hcd: USB 1.1 'Open' Host Controller (OHCI) Driver [ 0.546562] uhci_hcd: USB Universal Host Controller Interface driver [ 0.546700] i8042: PNP: PS/2 Controller [PNP0303:KBD,PNP0f13:MOU] at 0x60,0x64 irq 1,12 [ 0.547490] serio: i8042 KBD port at 0x60,0x64 irq 1 [ 0.547501] serio: i8042 AUX port at 0x60,0x64 irq 12 [ 0.547623] mousedev: PS/2 mouse device common for all mice [ 0.547865] rtc_cmos 00:01: rtc core: registered rtc_cmos as rtc0 [ 0.548007] rtc0: alarms up to one day, 114 bytes nvram, hpet irqs [ 0.548160] device-mapper: uevent: version 1.0.3 [ 0.548315] device-mapper: ioctl: 4.19.1-ioctl (2011-01-07) initialised: dm-devel@xxxxxxxxxx [ 0.548739] input: AT Translated Set 2 keyboard as /devices/platform/i8042/serio0/input/input1 [ 0.549555] device-mapper: multipath: version 1.2.0 loaded [ 0.549566] device-mapper: multipath round-robin: version 1.0.0 loaded [ 0.550074] cpuidle: using governor ladder [ 0.550080] cpuidle: using governor menu [ 0.550421] TCP cubic registered [ 0.550617] NET: Registered protocol family 10 [ 0.551795] NET: Registered protocol family 17 [ 0.551834] Registering the dns_resolver key type [ 0.552039] PM: Hibernation image not present or could not be loaded. [ 0.552060] registered taskstats version 1 [ 0.552295] Magic number: 3:298:220 [ 0.552356] dmi id: hash matches [ 0.552362] scsi: waiting for bus probes to complete ... [ 0.700853] ata2.01: NODEV after polling detection [ 0.701237] ata1.01: NODEV after polling detection [ 0.701613] ata2.00: ATAPI: QEMU DVD-ROM, 0.14.0, max UDMA/100 [ 0.701842] ata1.00: ATA-7: QEMU HARDDISK, 0.14.0, max UDMA/100 [ 0.701846] ata1.00: 6291456 sectors, multi 16: LBA48 [ 0.702483] ata2.00: configured for MWDMA2 [ 0.702902] ata1.00: configured for MWDMA2 [ 0.702941] scsi: waiting for bus probes to complete ... [ 0.865171] Freeing initrd memory: 13960k freed [ 1.320192] Refined TSC clocksource calibration: 2400.078 MHz. [ 3.500279] sym0: unknown interrupt(s) ignored, ISTAT=0x5 DSTAT=0x80 SIST=0x0 [ 3.500350] scsi 0:0:0:0: Direct-Access QEMU QEMU HARDDISK 0.14 PQ: 0 ANSI: 5 [ 3.500359] scsi target0:0:0: tagged command queuing enabled, command queue depth 16. [ 3.500378] scsi target0:0:0: Beginning Domain Validation [ 3.500866] scsi target0:0:0: Domain Validation skipping write tests [ 3.500869] scsi target0:0:0: Ending Domain Validation [ 3.501073] scsi 0:0:1:0: Direct-Access QEMU QEMU HARDDISK 0.14 PQ: 0 ANSI: 5 [ 3.501079] scsi target0:0:1: tagged command queuing enabled, command queue depth 16. [ 3.501084] scsi target0:0:1: Beginning Domain Validation [ 3.501553] scsi target0:0:1: Domain Validation skipping write tests [ 3.501556] scsi target0:0:1: Ending Domain Validation [ 3.501792] scsi 0:0:2:0: Direct-Access QEMU QEMU HARDDISK 0.14 PQ: 0 ANSI: 5 [ 3.501797] scsi target0:0:2: tagged command queuing enabled, command queue depth 16. [ 3.501802] scsi target0:0:2: Beginning Domain Validation [ 3.502269] scsi target0:0:2: Domain Validation skipping write tests [ 3.502273] scsi target0:0:2: Ending Domain Validation [ 3.502448] scsi 0:0:3:0: Direct-Access QEMU QEMU HARDDISK 0.14 PQ: 0 ANSI: 5 [ 3.502454] scsi target0:0:3: tagged command queuing enabled, command queue depth 16. [ 3.502458] scsi target0:0:3: Beginning Domain Validation [ 3.502928] scsi target0:0:3: Domain Validation skipping write tests [ 3.502931] scsi target0:0:3: Ending Domain Validation [ 3.503145] scsi 0:0:4:0: Direct-Access QEMU QEMU HARDDISK 0.14 PQ: 0 ANSI: 5 [ 3.503150] scsi target0:0:4: tagged command queuing enabled, command queue depth 16. [ 3.503155] scsi target0:0:4: Beginning Domain Validation [ 3.503679] scsi target0:0:4: Domain Validation skipping write tests [ 3.503683] scsi target0:0:4: Ending Domain Validation [ 3.503887] scsi 0:0:5:0: Direct-Access QEMU QEMU HARDDISK 0.14 PQ: 0 ANSI: 5 [ 3.503893] scsi target0:0:5: tagged command queuing enabled, command queue depth 16. [ 3.503898] scsi target0:0:5: Beginning Domain Validation [ 3.504365] scsi target0:0:5: Domain Validation skipping write tests [ 3.504368] scsi target0:0:5: Ending Domain Validation [ 3.504560] scsi 0:0:6:0: Direct-Access QEMU QEMU HARDDISK 0.14 PQ: 0 ANSI: 5 [ 3.504566] scsi target0:0:6: tagged command queuing enabled, command queue depth 16. [ 3.504571] scsi target0:0:6: Beginning Domain Validation [ 3.505035] scsi target0:0:6: Domain Validation skipping write tests [ 3.505039] scsi target0:0:6: Ending Domain Validation [ 3.507100] sd 0:0:0:0: Attached scsi generic sg0 type 0 [ 3.507330] sd 0:0:1:0: Attached scsi generic sg1 type 0 [ 3.507568] sd 0:0:2:0: Attached scsi generic sg2 type 0 [ 3.507795] sd 0:0:3:0: Attached scsi generic sg3 type 0 [ 3.507990] sd 0:0:4:0: Attached scsi generic sg4 type 0 [ 3.508233] sd 0:0:5:0: Attached scsi generic sg5 type 0 [ 3.508494] sd 0:0:6:0: Attached scsi generic sg6 type 0 [ 3.508754] sd 0:0:0:0: [sda] 41943040 512-byte logical blocks: (21.4 GB/20.0 GiB) [ 3.509042] sd 0:0:0:0: [sda] Write Protect is off [ 3.509046] sd 0:0:0:0: [sda] Mode Sense: 1f 00 00 08 [ 3.509185] sd 0:0:0:0: [sda] Write cache: disabled, read cache: enabled, doesn't support DPO or FUA [ 3.510419] sd 0:0:1:0: [sdb] 41943040 512-byte logical blocks: (21.4 GB/20.0 GiB) [ 3.510716] sd 0:0:1:0: [sdb] Write Protect is off [ 3.510721] sd 0:0:1:0: [sdb] Mode Sense: 1f 00 00 08 [ 3.510860] sd 0:0:1:0: [sdb] Write cache: disabled, read cache: enabled, doesn't support DPO or FUA [ 3.512051] sd 0:0:2:0: [sdc] 41943040 512-byte logical blocks: (21.4 GB/20.0 GiB) [ 3.512330] sd 0:0:2:0: [sdc] Write Protect is off [ 3.512334] sd 0:0:2:0: [sdc] Mode Sense: 1f 00 00 08 [ 3.512474] sd 0:0:2:0: [sdc] Write cache: disabled, read cache: enabled, doesn't support DPO or FUA [ 3.513724] sda: unknown partition table [ 3.514364] sd 0:0:0:0: [sda] Attached SCSI disk [ 3.514513] sd 0:0:3:0: [sdd] 41943040 512-byte logical blocks: (21.4 GB/20.0 GiB) [ 3.514787] sd 0:0:3:0: [sdd] Write Protect is off [ 3.514791] sd 0:0:3:0: [sdd] Mode Sense: 1f 00 00 08 [ 3.514929] sd 0:0:3:0: [sdd] Write cache: disabled, read cache: enabled, doesn't support DPO or FUA [ 3.516114] sd 0:0:4:0: [sde] 41943040 512-byte logical blocks: (21.4 GB/20.0 GiB) [ 3.516392] sd 0:0:4:0: [sde] Write Protect is off [ 3.516396] sd 0:0:4:0: [sde] Mode Sense: 1f 00 00 08 [ 3.516534] sd 0:0:4:0: [sde] Write cache: disabled, read cache: enabled, doesn't support DPO or FUA [ 3.517298] sdb: unknown partition table [ 3.517982] sd 0:0:1:0: [sdb] Attached SCSI disk [ 3.518130] sd 0:0:5:0: [sdf] 2097152 512-byte logical blocks: (1.07 GB/1.00 GiB) [ 3.518407] sd 0:0:5:0: [sdf] Write Protect is off [ 3.518410] sd 0:0:5:0: [sdf] Mode Sense: 1f 00 00 08 [ 3.518549] sd 0:0:5:0: [sdf] Write cache: disabled, read cache: enabled, doesn't support DPO or FUA [ 3.519661] sdc: unknown partition table [ 3.520315] sd 0:0:2:0: [sdc] Attached SCSI disk [ 3.520462] sd 0:0:6:0: [sdg] 2097152 512-byte logical blocks: (1.07 GB/1.00 GiB) [ 3.520737] sd 0:0:6:0: [sdg] Write Protect is off [ 3.520741] sd 0:0:6:0: [sdg] Mode Sense: 1f 00 00 08 [ 3.520880] sd 0:0:6:0: [sdg] Write cache: disabled, read cache: enabled, doesn't support DPO or FUA [ 3.521927] sdd: unknown partition table [ 3.522571] sd 0:0:3:0: [sdd] Attached SCSI disk [ 3.522593] sde: unknown partition table [ 3.523198] sd 0:0:4:0: [sde] Attached SCSI disk [ 3.524137] sdf: unknown partition table [ 3.524759] sd 0:0:5:0: [sdf] Attached SCSI disk [ 3.524782] sdg: unknown partition table [ 3.525387] sd 0:0:6:0: [sdg] Attached SCSI disk [ 3.530161] sym1: unknown interrupt(s) ignored, ISTAT=0x5 DSTAT=0x80 SIST=0x0 [ 3.530202] scsi 1:0:0:0: Direct-Access QEMU QEMU HARDDISK 0.14 PQ: 0 ANSI: 5 [ 3.530208] scsi target1:0:0: tagged command queuing enabled, command queue depth 16. [ 3.530213] scsi target1:0:0: Beginning Domain Validation [ 3.530686] scsi target1:0:0: Domain Validation skipping write tests [ 3.530690] scsi target1:0:0: Ending Domain Validation [ 3.530870] scsi 1:0:1:0: Direct-Access QEMU QEMU HARDDISK 0.14 PQ: 0 ANSI: 5 [ 3.530875] scsi target1:0:1: tagged command queuing enabled, command queue depth 16. [ 3.530880] scsi target1:0:1: Beginning Domain Validation [ 3.531346] scsi target1:0:1: Domain Validation skipping write tests [ 3.531349] scsi target1:0:1: Ending Domain Validation [ 3.531526] scsi 1:0:2:0: Direct-Access QEMU QEMU HARDDISK 0.14 PQ: 0 ANSI: 5 [ 3.531537] scsi target1:0:2: tagged command queuing enabled, command queue depth 16. [ 3.531542] scsi target1:0:2: Beginning Domain Validation [ 3.532008] scsi target1:0:2: Domain Validation skipping write tests [ 3.532011] scsi target1:0:2: Ending Domain Validation [ 3.534793] sd 1:0:0:0: Attached scsi generic sg7 type 0 [ 3.534998] sd 1:0:1:0: Attached scsi generic sg8 type 0 [ 3.535201] sd 1:0:2:0: Attached scsi generic sg9 type 0 [ 3.535344] rtc_cmos 00:01: setting system clock to 2011-07-17 08:13:02 UTC (1310890382) [ 3.535349] BIOS EDD facility v0.16 2004-Jun-25, 0 devices found [ 3.535351] EDD information not available. [ 3.535519] scsi 2:0:0:0: Direct-Access ATA QEMU HARDDISK 0.14 PQ: 0 ANSI: 5 [ 3.535697] sd 2:0:0:0: Attached scsi generic sg10 type 0 [ 3.535918] sd 1:0:0:0: [sdh] 2097152 512-byte logical blocks: (1.07 GB/1.00 GiB) [ 3.536196] sd 1:0:0:0: [sdh] Write Protect is off [ 3.536200] sd 1:0:0:0: [sdh] Mode Sense: 1f 00 00 08 [ 3.536339] sd 1:0:0:0: [sdh] Write cache: disabled, read cache: enabled, doesn't support DPO or FUA [ 3.537563] scsi 3:0:0:0: CD-ROM QEMU QEMU DVD-ROM 0.14 PQ: 0 ANSI: 5 [ 3.538417] sr0: scsi3-mmc drive: 4x/4x xa/form2 tray [ 3.538429] cdrom: Uniform CD-ROM driver Revision: 3.20 [ 3.538568] sr 3:0:0:0: Attached scsi CD-ROM sr0 [ 3.538649] sr 3:0:0:0: Attached scsi generic sg11 type 5 [ 3.538861] sd 1:0:1:0: [sdi] 2097152 512-byte logical blocks: (1.07 GB/1.00 GiB) [ 3.539141] sd 1:0:1:0: [sdi] Write Protect is off [ 3.539145] sd 1:0:1:0: [sdi] Mode Sense: 1f 00 00 08 [ 3.539284] sd 1:0:1:0: [sdi] Write cache: disabled, read cache: enabled, doesn't support DPO or FUA [ 3.540394] sd 1:0:2:0: [sdj] 2097152 512-byte logical blocks: (1.07 GB/1.00 GiB) [ 3.540670] sd 1:0:2:0: [sdj] Write Protect is off [ 3.540674] sd 1:0:2:0: [sdj] Mode Sense: 1f 00 00 08 [ 3.540812] sd 1:0:2:0: [sdj] Write cache: disabled, read cache: enabled, doesn't support DPO or FUA [ 3.541627] sd 2:0:0:0: [sdk] 6291456 512-byte logical blocks: (3.22 GB/3.00 GiB) [ 3.541686] sd 2:0:0:0: [sdk] Write Protect is off [ 3.541689] sd 2:0:0:0: [sdk] Mode Sense: 00 3a 00 00 [ 3.541715] sd 2:0:0:0: [sdk] Write cache: disabled, read cache: enabled, doesn't support DPO or FUA [ 3.542886] sdh: unknown partition table [ 3.543573] sd 1:0:0:0: [sdh] Attached SCSI disk [ 3.543593] sdk: sdk1 sdk2 < sdk5 > [ 3.543971] sd 2:0:0:0: [sdk] Attached SCSI disk [ 3.544235] sdi: unknown partition table [ 3.544904] sd 1:0:1:0: [sdi] Attached SCSI disk [ 3.544927] sdj: unknown partition table [ 3.545527] sd 1:0:2:0: [sdj] Attached SCSI disk [ 3.547939] Freeing unused kernel memory: 880k freed [ 3.548487] Write protecting the kernel read-only data: 10240k [ 3.549192] Freeing unused kernel memory: 104k freed [ 3.556492] Freeing unused kernel memory: 1416k freed [ 3.585709] <30>udev[70]: starting version 167 [ 3.622636] md: linear personality registered for level -1 [ 3.625882] md: multipath personality registered for level -4 [ 3.634679] md: raid0 personality registered for level 0 [ 3.647068] md: raid1 personality registered for level 1 [ 3.654145] async_tx: api initialized (async) [ 3.820061] raid6: int64x1 1469 MB/s [ 3.990046] raid6: int64x2 1892 MB/s [ 4.160050] raid6: int64x4 1278 MB/s [ 4.330042] raid6: int64x8 1346 MB/s [ 4.500019] raid6: sse2x1 6524 MB/s [ 4.670017] raid6: sse2x2 7954 MB/s [ 4.840018] raid6: sse2x4 8808 MB/s [ 4.840020] raid6: using algorithm sse2x4 (8808 MB/s) [ 4.849194] xor: automatically using best checksumming function: generic_sse [ 4.890032] generic_sse: 184.000 MB/sec [ 4.890034] xor: using function: generic_sse (184.000 MB/sec) [ 4.938302] md: raid6 personality registered for level 6 [ 4.938308] md: raid5 personality registered for level 5 [ 4.938309] md: raid4 personality registered for level 4 [ 4.953743] md: raid10 personality registered for level 10 [ 5.050518] FDC 0 is a S82078B [ 5.073900] EXT4-fs (sdk1): mounted filesystem with ordered data mode. Opts: (null) [ 5.564195] <30>udev[318]: starting version 167 [ 5.580600] Adding 313340k swap on /dev/sdk5. Priority:-1 extents:1 across:313340k [ 5.628302] lp: driver loaded but no devices found [ 5.694797] EXT4-fs (sdk1): re-mounted. Opts: errors=remount-ro [ 5.775888] piix4_smbus 0000:00:01.3: SMBus Host Controller at 0xb100, revision 0 [ 6.049026] RPC: Registered udp transport module. [ 6.049030] RPC: Registered tcp transport module. [ 6.049032] RPC: Registered tcp NFSv4.1 backchannel transport module. [ 6.126806] FS-Cache: Loaded [ 6.155722] parport_pc 00:05: reported by Plug and Play ACPI [ 6.155855] parport0: PC-style at 0x378, irq 7 [PCSPP,TRISTATE] [ 6.201241] FS-Cache: Netfs 'nfs' registered for caching [ 6.242319] type=1400 audit(1310890385.202:2): apparmor="STATUS" operation="profile_load" name="/sbin/dhclient" pid=466 comm="apparmor_parser" [ 6.243477] type=1400 audit(1310890385.202:3): apparmor="STATUS" operation="profile_load" name="/usr/lib/NetworkManager/nm-dhcp-client.action" pid=466 comm="apparmor_parser" [ 6.244050] type=1400 audit(1310890385.202:4): apparmor="STATUS" operation="profile_load" name="/usr/lib/connman/scripts/dhclient-script" pid=466 comm="apparmor_parser" [ 6.315981] Installing knfsd (copyright (C) 1996 okir@xxxxxxxxxxxx). [ 6.431932] Loading iSCSI transport class v2.0-870. [ 6.483340] iscsi: registered transport (tcp) [ 6.588133] iscsi: registered transport (iser) [ 6.617974] iscsid (585): /proc/585/oom_adj is deprecated, please use /proc/585/oom_score_adj instead. [ 6.984170] type=1400 audit(1310890385.942:5): apparmor="STATUS" operation="profile_replace" name="/sbin/dhclient" pid=781 comm="apparmor_parser" [ 6.992532] lp0: using parport0 (interrupt-driven). [ 6.996255] type=1400 audit(1310890385.952:6): apparmor="STATUS" operation="profile_replace" name="/usr/lib/NetworkManager/nm-dhcp-client.action" pid=781 comm="apparmor_parser" [ 6.998575] type=1400 audit(1310890385.952:7): apparmor="STATUS" operation="profile_replace" name="/usr/lib/connman/scripts/dhclient-script" pid=781 comm="apparmor_parser" [ 7.002830] type=1400 audit(1310890385.962:8): apparmor="STATUS" operation="profile_load" name="/usr/sbin/mysqld" pid=792 comm="apparmor_parser" [ 7.012676] type=1400 audit(1310890385.972:9): apparmor="STATUS" operation="profile_load" name="/usr/sbin/tcpdump" pid=798 comm="apparmor_parser" [ 7.193731] ppdev: user-space parallel port driver [ 7.270891] input: ImExPS/2 Generic Explorer Mouse as /devices/platform/i8042/serio1/input/input2 [ 7.708155] [1010]: scst: scst_register_device:962:Attached to scsi0, channel 0, id 0, lun 0, type 0 [ 7.708164] [1010]: scst: scst_register_device:962:Attached to scsi0, channel 0, id 1, lun 0, type 0 [ 7.708172] [1010]: scst: scst_register_device:962:Attached to scsi0, channel 0, id 2, lun 0, type 0 [ 7.708179] [1010]: scst: scst_register_device:962:Attached to scsi0, channel 0, id 3, lun 0, type 0 [ 7.708186] [1010]: scst: scst_register_device:962:Attached to scsi0, channel 0, id 4, lun 0, type 0 [ 7.708193] [1010]: scst: scst_register_device:962:Attached to scsi0, channel 0, id 5, lun 0, type 0 [ 7.708200] [1010]: scst: scst_register_device:962:Attached to scsi0, channel 0, id 6, lun 0, type 0 [ 7.708207] [1010]: scst: scst_register_device:962:Attached to scsi1, channel 0, id 0, lun 0, type 0 [ 7.708214] [1010]: scst: scst_register_device:962:Attached to scsi1, channel 0, id 1, lun 0, type 0 [ 7.708221] [1010]: scst: scst_register_device:962:Attached to scsi1, channel 0, id 2, lun 0, type 0 [ 7.708229] [1010]: scst: scst_register_device:962:Attached to scsi2, channel 0, id 0, lun 0, type 0 [ 7.708245] [1010]: scst: scst_register_device:962:Attached to scsi3, channel 0, id 0, lun 0, type 5 [ 7.708256] [1011]: scst: sysfs_work_thread_fn:518:User interface thread started, PID 1011 [ 7.711605] [1015]: scst: scst_cmd_thread:4288:Processing thread scstd0 (PID 1015) started [ 7.711621] [1016]: scst: scst_init_thread:4032:Init thread started, PID 1016 [ 7.711634] [1017]: scst: scst_tm_thread:5804:Task management thread started, PID 1017 [ 7.711640] [1010]: scst: init_scst:2349:SCST version 2.1.0-rc1 loaded successfully (max mem for commands 754MB, per device 301MB) [ 7.711644] [1010]: scst: scst_print_config:2144:Enabled features: EXTRACHECKS, DEBUG [ 7.717828] [1019]: scst: __scst_register_virtual_dev_driver:1520:Virtual device handler vdisk_fileio for type 0 registered successfully [ 7.717835] [1019]: scst: __scst_register_virtual_dev_driver:1520:Virtual device handler vdisk_blockio for type 0 registered successfully [ 7.717840] [1019]: scst: __scst_register_virtual_dev_driver:1520:Virtual device handler vdisk_nullio for type 0 registered successfully [ 7.717845] [1019]: scst: __scst_register_virtual_dev_driver:1520:Virtual device handler vcdrom for type 5 registered successfully [ 7.718208] [1018]: scst: scst_global_mgmt_thread:6584:Management thread started, PID 1018 [ 7.741409] [1027]: iscsi-scst: iscsi_init:4026:iSCSI SCST Target - version 2.1.0-rc1 [ 7.741559] [1027]: iscsi-scst: iscsi_init:4056:***WARNING***: CONFIG_TCP_ZERO_COPY_TRANSFER_COMPLETION_NOTIFICATION not enabled in your kernel. ISCSI-SCST will be working with not the best performance. Refer README file for details. [ 7.741604] [1027]: scst: __scst_register_target_template:318:Target template iscsi registered successfully [ 7.742165] [1028]: iscsi-scst: istrd:1085:Read thread for pool ffff8800b7cb99c0 started, PID 1028 [ 7.742180] [1029]: iscsi-scst: istrd:1085:Read thread for pool ffff8800b7cb99c0 started, PID 1029 [ 7.742194] [1030]: iscsi-scst: istwr:1856:Write thread for pool ffff8800b7cb99c0 started, PID 1030 [ 7.745931] [1031]: iscsi-scst: istwr:1856:Write thread for pool ffff8800b7cb99c0 started, PID 1031 [ 16.560135] eth0: no IPv6 routers present [ 170.648177] md: bind<sda> [ 170.648521] md: bind<sdb> [ 170.648740] md: bind<sdc> [ 170.656510] bio: create slab <bio-1> at 1 [ 170.656540] md/raid:md1123: device sdb operational as raid disk 1 [ 170.656543] md/raid:md1123: device sda operational as raid disk 0 [ 170.657080] md/raid:md1123: allocated 3230kB [ 170.659433] md/raid:md1123: raid level 5 active with 2 out of 3 devices, algorithm 2 [ 170.659608] RAID conf printout: [ 170.659611] --- level:5 rd:3 wd:2 [ 170.659614] disk 0, o:1, dev:sda [ 170.659616] disk 1, o:1, dev:sdb [ 170.659893] created bitmap (1 pages) for device md1123 [ 170.660415] md1123: bitmap initialized from disk: read 1/1 pages, set 320 bits [ 170.674166] md1123: detected capacity change from 0 to 42946527232 [ 170.676006] RAID conf printout: [ 170.676010] --- level:5 rd:3 wd:2 [ 170.676013] disk 0, o:1, dev:sda [ 170.676015] disk 1, o:1, dev:sdb [ 170.676017] disk 2, o:1, dev:sdc [ 170.676175] md1123: unknown partition table [ 170.676597] md: recovery of RAID array md1123 [ 170.676601] md: minimum _guaranteed_ speed: 1000 KB/sec/disk. [ 170.676603] md: using maximum available idle IO bandwidth (but not more than 200000 KB/sec) for recovery. [ 170.676607] md: using 128k window, over a total of 20969984 blocks. [ 176.678537] md/raid:md1123: Disk failure on sda, disabling device. [ 176.678539] md/raid:md1123: Operation continuing on 1 devices. [ 176.740093] md: md1123: recovery done. [ 177.691653] md: md1123 still in use. [ 216.311462] md: md1123 still in use. [ 228.591860] md: cannot remove active disk sda from md1123 ... [ 230.141428] md: cannot remove active disk sdb from md1123 ... [ 231.221410] md: cannot remove active disk sdc from md1123 ... [ 504.910634] SysRq : Show Blocked State [ 504.910729] task PC stack pid father [ 504.910749] blkid D 0000000000000000 0 1337 1 0x00000000 [ 504.910753] ffff8800b509bbf8 0000000000000086 ffff8800b509bfd8 ffff8800b509a000 [ 504.910756] 0000000000013d00 ffff8800b796b178 ffff8800b509bfd8 0000000000013d00 [ 504.910758] ffff8800b5bf96e0 ffff8800b796adc0 ffff8800bffcb248 ffff8800bfc13d00 [ 504.910761] Call Trace: [ 504.910770] [<ffffffff8110b480>] ? sync_page_killable+0x0/0x40 [ 504.910774] [<ffffffff815d5720>] io_schedule+0x70/0xc0 [ 504.910776] [<ffffffff8110b470>] sync_page+0x40/0x50 [ 504.910778] [<ffffffff8110b48e>] sync_page_killable+0xe/0x40 [ 504.910780] [<ffffffff815d5cea>] __wait_on_bit_lock+0x5a/0xc0 [ 504.910783] [<ffffffff8110b397>] __lock_page_killable+0x67/0x70 [ 504.910787] [<ffffffff81087980>] ? wake_bit_function+0x0/0x50 [ 504.910789] [<ffffffff8110c547>] do_generic_file_read.clone.23+0x297/0x450 [ 504.910792] [<ffffffff8110d1ba>] generic_file_aio_read+0x1ca/0x240 [ 504.910796] [<ffffffff81164c82>] do_sync_read+0xd2/0x110 [ 504.910807] [<ffffffff81279083>] ? security_file_permission+0x93/0xb0 [ 504.910809] [<ffffffff81164fa1>] ? rw_verify_area+0x61/0xf0 [ 504.910811] [<ffffffff81165463>] vfs_read+0xc3/0x180 [ 504.910813] [<ffffffff81165571>] sys_read+0x51/0x90 [ 504.910816] [<ffffffff8100bfc2>] system_call_fastpath+0x16/0x1b [ 504.910821] Sched Debug Version: v0.10, 2.6.38-8-server #42-Ubuntu [ 504.910823] ktime : 504910.820117 [ 504.910824] sched_clk : 953864697.597371 [ 504.910826] cpu_clk : 504910.820189 [ 504.910827] jiffies : 4294987787 [ 504.910828] sched_clock_stable : 0 [ 504.910829] [ 504.910830] sysctl_sched [ 504.910831] .sysctl_sched_latency : 6.000000 [ 504.910832] .sysctl_sched_min_granularity : 0.750000 [ 504.910834] .sysctl_sched_wakeup_granularity : 1.000000 [ 504.910835] .sysctl_sched_child_runs_first : 0 [ 504.910836] .sysctl_sched_features : 7279 [ 504.910838] .sysctl_sched_tunable_scaling : 1 (logaritmic) [ 504.910841] [ 504.910842] cpu#0, 2400.084 MHz [ 504.910843] .nr_running : 2 [ 504.910844] .load : 2048 [ 504.910845] .nr_switches : 44013 [ 504.910846] .nr_load_updates : 36769 [ 504.910848] .nr_uninterruptible : 1 [ 504.910849] .next_balance : 4294.955008 [ 504.910850] .curr->pid : 1390 [ 504.910851] .clock : 504910.025729 [ 504.910852] .cpu_load[0] : 1024 [ 504.910854] .cpu_load[1] : 1024 [ 504.910855] .cpu_load[2] : 1024 [ 504.910856] .cpu_load[3] : 1024 [ 504.910857] .cpu_load[4] : 1024 [ 504.910858] .yld_count : 0 [ 504.910859] .sched_switch : 0 [ 504.910860] .sched_count : 44317 [ 504.910861] .sched_goidle : 4441 [ 504.910862] .avg_idle : 1000000 [ 504.910863] .ttwu_count : 24587 [ 504.910864] .ttwu_local : 24587 [ 504.910865] .bkl_count : 0 [ 504.910869] [ 504.910869] cfs_rq[0]:/autogroup-55 [ 504.910870] .exec_clock : 0.577353 [ 504.910872] .MIN_vruntime : 0.000001 [ 504.910873] .min_vruntime : 0.471223 [ 504.910874] .max_vruntime : 0.000001 [ 504.910885] .spread : 0.000000 [ 504.910886] .spread0 : -332282.124910 [ 504.910887] .nr_spread_over : 0 [ 504.910888] .nr_running : 0 [ 504.910889] .load : 0 [ 504.910891] .load_avg : 65.955840 [ 504.910892] .load_period : 0.064410 [ 504.910893] .load_contrib : 0 [ 504.910894] .load_tg : 0 [ 504.910896] .se->exec_start : 307680.101709 [ 504.910898] .se->vruntime : 135197.882765 [ 504.910899] .se->sum_exec_runtime : 0.577353 [ 504.910900] .se->statistics.wait_start : 0.000000 [ 504.910901] .se->statistics.sleep_start : 0.000000 [ 504.910903] .se->statistics.block_start : 0.000000 [ 504.910904] .se->statistics.sleep_max : 0.000000 [ 504.910905] .se->statistics.block_max : 0.000000 [ 504.910906] .se->statistics.exec_max : 0.301475 [ 504.910908] .se->statistics.slice_max : 0.302127 [ 504.910909] .se->statistics.wait_max : 0.027890 [ 504.910910] .se->statistics.wait_sum : 0.049731 [ 504.910911] .se->statistics.wait_count : 8 [ 504.910912] .se->load.weight : 2 [ 504.910914] [ 504.910914] cfs_rq[0]:/autogroup-98 [ 504.910916] .exec_clock : 436.471565 [ 504.910917] .MIN_vruntime : 0.000001 [ 504.910918] .min_vruntime : 476.072780 [ 504.910919] .max_vruntime : 0.000001 [ 504.910921] .spread : 0.000000 [ 504.910922] .spread0 : -331805.580907 [ 504.910923] .nr_spread_over : 158 [ 504.910924] .nr_running : 1 [ 504.910925] .load : 1024 [ 504.910927] .load_avg : 0.414715 [ 504.910928] .load_period : 6.987305 [ 504.910929] .load_contrib : 0 [ 504.910930] .load_tg : 0 [ 504.910931] .se->exec_start : 504910.025729 [ 504.910933] .se->vruntime : 332278.653687 [ 504.910934] .se->sum_exec_runtime : 436.471565 [ 504.910935] .se->statistics.wait_start : 0.000000 [ 504.910937] .se->statistics.sleep_start : 0.000000 [ 504.910938] .se->statistics.block_start : 0.000000 [ 504.910939] .se->statistics.sleep_max : 0.000000 [ 504.910940] .se->statistics.block_max : 0.000000 [ 504.910941] .se->statistics.exec_max : 10.000809 [ 504.910943] .se->statistics.slice_max : 10.009682 [ 504.910944] .se->statistics.wait_max : 12.419031 [ 504.910945] .se->statistics.wait_sum : 361.577832 [ 504.910946] .se->statistics.wait_count : 2110 [ 504.910948] .se->load.weight : 1024 [ 504.910949] [ 504.910950] cfs_rq[0]:/autogroup-97 [ 504.910951] .exec_clock : 81.190946 [ 504.910952] .MIN_vruntime : 0.000001 [ 504.910953] .min_vruntime : 96.462908 [ 504.910954] .max_vruntime : 0.000001 [ 504.910956] .spread : 0.000000 [ 504.910957] .spread0 : -332185.190779 [ 504.910958] .nr_spread_over : 22 [ 504.910959] .nr_running : 0 [ 504.910960] .load : 0 [ 504.910961] .load_avg : 69.058560 [ 504.910963] .load_period : 0.067440 [ 504.910964] .load_contrib : 0 [ 504.910965] .load_tg : 0 [ 504.910966] .se->exec_start : 504908.418721 [ 504.910967] .se->vruntime : 332277.122511 [ 504.910974] .se->sum_exec_runtime : 81.190946 [ 504.910976] .se->statistics.wait_start : 0.000000 [ 504.910977] .se->statistics.sleep_start : 0.000000 [ 504.910978] .se->statistics.block_start : 0.000000 [ 504.910979] .se->statistics.sleep_max : 0.000000 [ 504.910980] .se->statistics.block_max : 0.000000 [ 504.910982] .se->statistics.exec_max : 9.994761 [ 504.910983] .se->statistics.slice_max : 11.408766 [ 504.910984] .se->statistics.wait_max : 20.014296 [ 504.910985] .se->statistics.wait_sum : 70.643475 [ 504.910986] .se->statistics.wait_count : 652 [ 504.910988] .se->load.weight : 2 [ 504.910989] [ 504.910990] cfs_rq[0]:/autogroup-47 [ 504.910991] .exec_clock : 5.490044 [ 504.910992] .MIN_vruntime : 0.000001 [ 504.910993] .min_vruntime : 8.397206 [ 504.910995] .max_vruntime : 0.000001 [ 504.910996] .spread : 0.000000 [ 504.910997] .spread0 : -332273.256481 [ 504.910998] .nr_spread_over : 0 [ 504.910999] .nr_running : 0 [ 504.911000] .load : 0 [ 504.911002] .load_avg : 11.317248 [ 504.911003] .load_period : 0.011052 [ 504.911004] .load_contrib : 1 [ 504.911005] .load_tg : 1 [ 504.911007] .se->exec_start : 237475.374787 [ 504.911008] .se->vruntime : 65372.863188 [ 504.911010] .se->sum_exec_runtime : 5.490044 [ 504.911011] .se->statistics.wait_start : 0.000000 [ 504.911012] .se->statistics.sleep_start : 0.000000 [ 504.911014] .se->statistics.block_start : 0.000000 [ 504.911015] .se->statistics.sleep_max : 0.000000 [ 504.911016] .se->statistics.block_max : 0.000000 [ 504.911017] .se->statistics.exec_max : 4.204008 [ 504.911018] .se->statistics.slice_max : 4.295892 [ 504.911020] .se->statistics.wait_max : 5.792169 [ 504.911021] .se->statistics.wait_sum : 5.833235 [ 504.911022] .se->statistics.wait_count : 8 [ 504.911023] .se->load.weight : 2 [ 504.911025] [ 504.911025] cfs_rq[0]:/autogroup-77 [ 504.911027] .exec_clock : 4.001773 [ 504.911028] .MIN_vruntime : 0.000001 [ 504.911029] .min_vruntime : 5.193779 [ 504.911030] .max_vruntime : 0.000001 [ 504.911031] .spread : 0.000000 [ 504.911033] .spread0 : -332276.459908 [ 504.911034] .nr_spread_over : 0 [ 504.911035] .nr_running : 0 [ 504.911036] .load : 0 [ 504.911037] .load_avg : 57.104384 [ 504.911039] .load_period : 0.055766 [ 504.911040] .load_contrib : 0 [ 504.911041] .load_tg : 0 [ 504.911042] .se->exec_start : 476113.271119 [ 504.911044] .se->vruntime : 303489.323396 [ 504.911045] .se->sum_exec_runtime : 4.001773 [ 504.911046] .se->statistics.wait_start : 0.000000 [ 504.911048] .se->statistics.sleep_start : 0.000000 [ 504.911049] .se->statistics.block_start : 0.000000 [ 504.911050] .se->statistics.sleep_max : 0.000000 [ 504.911051] .se->statistics.block_max : 0.000000 [ 504.911052] .se->statistics.exec_max : 0.870429 [ 504.911054] .se->statistics.slice_max : 0.871374 [ 504.911055] .se->statistics.wait_max : 0.086869 [ 504.911056] .se->statistics.wait_sum : 0.206565 [ 504.911057] .se->statistics.wait_count : 18 [ 504.911064] .se->load.weight : 2 [ 504.911067] [ 504.911067] cfs_rq[0]:/autogroup-94 [ 504.911068] .exec_clock : 377.195414 [ 504.911069] .MIN_vruntime : 0.000001 [ 504.911071] .min_vruntime : 419.366155 [ 504.911072] .max_vruntime : 0.000001 [ 504.911073] .spread : 0.000000 [ 504.911074] .spread0 : -331862.287532 [ 504.911076] .nr_spread_over : 26 [ 504.911077] .nr_running : 0 [ 504.911078] .load : 0 [ 504.911079] .load_avg : 65.437184 [ 504.911080] .load_period : 5.752241 [ 504.911081] .load_contrib : 2 [ 504.911083] .load_tg : 2 [ 504.911084] .se->exec_start : 231230.096233 [ 504.911086] .se->vruntime : 59182.405376 [ 504.911087] .se->sum_exec_runtime : 377.195414 [ 504.911088] .se->statistics.wait_start : 0.000000 [ 504.911089] .se->statistics.sleep_start : 0.000000 [ 504.911091] .se->statistics.block_start : 0.000000 [ 504.911092] .se->statistics.sleep_max : 0.000000 [ 504.911093] .se->statistics.block_max : 0.000000 [ 504.911094] .se->statistics.exec_max : 10.002204 [ 504.911096] .se->statistics.slice_max : 0.275035 [ 504.911097] .se->statistics.wait_max : 0.106017 [ 504.911098] .se->statistics.wait_sum : 1.724216 [ 504.911099] .se->statistics.wait_count : 1114 [ 504.911100] .se->load.weight : 2 [ 504.911102] [ 504.911103] cfs_rq[0]:/autogroup-95 [ 504.911104] .exec_clock : 760.249147 [ 504.911105] .MIN_vruntime : 0.000001 [ 504.911106] .min_vruntime : 862.141448 [ 504.911108] .max_vruntime : 0.000001 [ 504.911109] .spread : 0.000000 [ 504.911110] .spread0 : -331419.512239 [ 504.911111] .nr_spread_over : 126 [ 504.911112] .nr_running : 0 [ 504.911113] .load : 0 [ 504.911115] .load_avg : 1974.212608 [ 504.911116] .load_period : 1.812061 [ 504.911117] .load_contrib : 0 [ 504.911118] .load_tg : 0 [ 504.911120] .se->exec_start : 231221.831659 [ 504.911121] .se->vruntime : 59175.982390 [ 504.911123] .se->sum_exec_runtime : 760.249147 [ 504.911124] .se->statistics.wait_start : 0.000000 [ 504.911125] .se->statistics.sleep_start : 0.000000 [ 504.911126] .se->statistics.block_start : 0.000000 [ 504.911128] .se->statistics.sleep_max : 0.000000 [ 504.911129] .se->statistics.block_max : 0.000000 [ 504.911130] .se->statistics.exec_max : 10.001120 [ 504.911131] .se->statistics.slice_max : 2.801075 [ 504.911133] .se->statistics.wait_max : 6.775995 [ 504.911134] .se->statistics.wait_sum : 56.108541 [ 504.911135] .se->statistics.wait_count : 1394 [ 504.911136] .se->load.weight : 2 [ 504.911138] [ 504.911138] cfs_rq[0]:/autogroup-44 [ 504.911139] .exec_clock : 7.551274 [ 504.911141] .MIN_vruntime : 0.000001 [ 504.911142] .min_vruntime : 6.502698 [ 504.911143] .max_vruntime : 0.000001 [ 504.911144] .spread : 0.000000 [ 504.911145] .spread0 : -332275.150989 [ 504.911147] .nr_spread_over : 0 [ 504.911148] .nr_running : 0 [ 504.911149] .load : 0 [ 504.911155] .load_avg : 11.603968 [ 504.911157] .load_period : 0.011332 [ 504.911158] .load_contrib : 0 [ 504.911159] .load_tg : 0 [ 504.911160] .se->exec_start : 504670.285294 [ 504.911161] .se->vruntime : 332039.418792 [ 504.911163] .se->sum_exec_runtime : 7.551274 [ 504.911164] .se->statistics.wait_start : 0.000000 [ 504.911165] .se->statistics.sleep_start : 0.000000 [ 504.911166] .se->statistics.block_start : 0.000000 [ 504.911168] .se->statistics.sleep_max : 0.000000 [ 504.911169] .se->statistics.block_max : 0.000000 [ 504.911170] .se->statistics.exec_max : 0.164354 [ 504.911171] .se->statistics.slice_max : 0.031752 [ 504.911172] .se->statistics.wait_max : 0.012799 [ 504.911174] .se->statistics.wait_sum : 0.012799 [ 504.911175] .se->statistics.wait_count : 498 [ 504.911176] .se->load.weight : 2 [ 504.911177] [ 504.911178] cfs_rq[0]:/autogroup-45 [ 504.911179] .exec_clock : 33.642079 [ 504.911180] .MIN_vruntime : 0.000001 [ 504.911181] .min_vruntime : 2.665989 [ 504.911183] .max_vruntime : 0.000001 [ 504.911184] .spread : 0.000000 [ 504.911185] .spread0 : -332278.987698 [ 504.911186] .nr_spread_over : 0 [ 504.911187] .nr_running : 0 [ 504.911188] .load : 0 [ 504.911189] .load_avg : 80.413256 [ 504.911191] .load_period : 0.008422 [ 504.911192] .load_contrib : 0 [ 504.911193] .load_tg : 0 [ 504.911194] .se->exec_start : 504722.413919 [ 504.911196] .se->vruntime : 332091.536085 [ 504.911197] .se->sum_exec_runtime : 33.642079 [ 504.911198] .se->statistics.wait_start : 0.000000 [ 504.911199] .se->statistics.sleep_start : 0.000000 [ 504.911201] .se->statistics.block_start : 0.000000 [ 504.911202] .se->statistics.sleep_max : 0.000000 [ 504.911203] .se->statistics.block_max : 0.000000 [ 504.911204] .se->statistics.exec_max : 1.638176 [ 504.911206] .se->statistics.slice_max : 1.638176 [ 504.911207] .se->statistics.wait_max : 0.615461 [ 504.911208] .se->statistics.wait_sum : 0.712627 [ 504.911209] .se->statistics.wait_count : 1993 [ 504.911210] .se->load.weight : 2 [ 504.911212] [ 504.911212] cfs_rq[0]:/autogroup-93 [ 504.911213] .exec_clock : 32.063014 [ 504.911215] .MIN_vruntime : 0.000001 [ 504.911216] .min_vruntime : 31.799141 [ 504.911217] .max_vruntime : 0.000001 [ 504.911218] .spread : 0.000000 [ 504.911219] .spread0 : -332249.854546 [ 504.911221] .nr_spread_over : 0 [ 504.911222] .nr_running : 0 [ 504.911223] .load : 0 [ 504.911224] .load_avg : 402.524160 [ 504.911225] .load_period : 5.541945 [ 504.911226] .load_contrib : 0 [ 504.911227] .load_tg : 0 [ 504.911229] .se->exec_start : 504866.521510 [ 504.911230] .se->vruntime : 332235.589069 [ 504.911231] .se->sum_exec_runtime : 32.063014 [ 504.911232] .se->statistics.wait_start : 0.000000 [ 504.911234] .se->statistics.sleep_start : 0.000000 [ 504.911235] .se->statistics.block_start : 0.000000 [ 504.911236] .se->statistics.sleep_max : 0.000000 [ 504.911243] .se->statistics.block_max : 0.000000 [ 504.911244] .se->statistics.exec_max : 2.406006 [ 504.911245] .se->statistics.slice_max : 0.535484 [ 504.911246] .se->statistics.wait_max : 0.454589 [ 504.911248] .se->statistics.wait_sum : 0.583201 [ 504.911249] .se->statistics.wait_count : 302 [ 504.911250] .se->load.weight : 2 [ 504.911252] [ 504.911253] cfs_rq[0]:/autogroup-26 [ 504.911254] .exec_clock : 25.677149 [ 504.911255] .MIN_vruntime : 0.000001 [ 504.911256] .min_vruntime : 20.872061 [ 504.911258] .max_vruntime : 0.000001 [ 504.911259] .spread : 0.000000 [ 504.911260] .spread0 : -332260.781626 [ 504.911261] .nr_spread_over : 2 [ 504.911262] .nr_running : 0 [ 504.911263] .load : 0 [ 504.911265] .load_avg : 25.005056 [ 504.911266] .load_period : 0.024419 [ 504.911267] .load_contrib : 0 [ 504.911268] .load_tg : 0 [ 504.911270] .se->exec_start : 486500.033508 [ 504.911271] .se->vruntime : 313872.401958 [ 504.911273] .se->sum_exec_runtime : 25.677149 [ 504.911274] .se->statistics.wait_start : 0.000000 [ 504.911275] .se->statistics.sleep_start : 0.000000 [ 504.911276] .se->statistics.block_start : 0.000000 [ 504.911278] .se->statistics.sleep_max : 0.000000 [ 504.911279] .se->statistics.block_max : 0.000000 [ 504.911280] .se->statistics.exec_max : 4.001458 [ 504.911281] .se->statistics.slice_max : 4.001458 [ 504.911283] .se->statistics.wait_max : 23.210683 [ 504.911284] .se->statistics.wait_sum : 73.089978 [ 504.911285] .se->statistics.wait_count : 190 [ 504.911286] .se->load.weight : 2 [ 504.911288] [ 504.911288] cfs_rq[0]:/autogroup-22 [ 504.911290] .exec_clock : 527.961931 [ 504.911291] .MIN_vruntime : 0.000001 [ 504.911292] .min_vruntime : 151.311694 [ 504.911294] .max_vruntime : 0.000001 [ 504.911295] .spread : 0.000000 [ 504.911296] .spread0 : -332130.341993 [ 504.911297] .nr_spread_over : 121 [ 504.911298] .nr_running : 0 [ 504.911299] .load : 0 [ 504.911301] .load_avg : 1111.549442 [ 504.911302] .load_period : 0.532895 [ 504.911303] .load_contrib : 0 [ 504.911304] .load_tg : 0 [ 504.911306] .se->exec_start : 356684.107482 [ 504.911307] .se->vruntime : 184169.472319 [ 504.911308] .se->sum_exec_runtime : 527.961931 [ 504.911310] .se->statistics.wait_start : 0.000000 [ 504.911311] .se->statistics.sleep_start : 0.000000 [ 504.911312] .se->statistics.block_start : 0.000000 [ 504.911313] .se->statistics.sleep_max : 0.000000 [ 504.911314] .se->statistics.block_max : 0.000000 [ 504.911316] .se->statistics.exec_max : 13.423428 [ 504.911317] .se->statistics.slice_max : 13.444230 [ 504.911318] .se->statistics.wait_max : 31.119278 [ 504.911319] .se->statistics.wait_sum : 1280.604518 [ 504.911321] .se->statistics.wait_count : 3048 [ 504.911322] .se->load.weight : 2 [ 504.911324] [ 504.911324] cfs_rq[0]:/autogroup-81 [ 504.911325] .exec_clock : 12.556567 [ 504.911327] .MIN_vruntime : 0.000001 [ 504.911328] .min_vruntime : 12.143997 [ 504.911335] .max_vruntime : 0.000001 [ 504.911336] .spread : 0.000000 [ 504.911337] .spread0 : -332269.509690 [ 504.911338] .nr_spread_over : 0 [ 504.911339] .nr_running : 0 [ 504.911340] .load : 0 [ 504.911342] .load_avg : 797.444800 [ 504.911343] .load_period : 5.529441 [ 504.911344] .load_contrib : 144 [ 504.911345] .load_tg : 144 [ 504.911347] .se->exec_start : 176690.782872 [ 504.911348] .se->vruntime : 4768.148996 [ 504.911349] .se->sum_exec_runtime : 12.556567 [ 504.911351] .se->statistics.wait_start : 0.000000 [ 504.911352] .se->statistics.sleep_start : 0.000000 [ 504.911353] .se->statistics.block_start : 0.000000 [ 504.911354] .se->statistics.sleep_max : 0.000000 [ 504.911356] .se->statistics.block_max : 0.000000 [ 504.911357] .se->statistics.exec_max : 2.983240 [ 504.911358] .se->statistics.slice_max : 2.983240 [ 504.911359] .se->statistics.wait_max : 7.305608 [ 504.911361] .se->statistics.wait_sum : 15.575225 [ 504.911362] .se->statistics.wait_count : 30 [ 504.911363] .se->load.weight : 2 [ 504.911364] [ 504.911365] cfs_rq[0]:/autogroup-0 [ 504.911366] .exec_clock : 335096.149477 [ 504.911367] .MIN_vruntime : 332281.653687 [ 504.911369] .min_vruntime : 332281.653687 [ 504.911370] .max_vruntime : 332281.653687 [ 504.911371] .spread : 0.000000 [ 504.911372] .spread0 : 0.000000 [ 504.911374] .nr_spread_over : 103 [ 504.911375] .nr_running : 2 [ 504.911376] .load : 2048 [ 504.911377] .load_avg : 0.000000 [ 504.911378] .load_period : 0.000000 [ 504.911379] .load_contrib : 0 [ 504.911380] .load_tg : 0 [ 504.911382] [ 504.911382] runnable tasks: [ 504.911383] task PID tree-key switches prio exec-runtime sum-exec sum-sleep [ 504.911384] ---------------------------------------------------------------------------------------------------------- [ 504.911389] md1123_raid5 1310 332281.653687 8767 120 332281.653687 327572.546291 5960.052537 /autogroup-0 [ 504.911394] R bash 1390 473.290911 1098 120 473.290911 226.301682 267038.335128 /autogroup-98 [ 504.911398] Thanks, Alex. On Tue, Jun 28, 2011 at 5:29 AM, NeilBrown <neilb@xxxxxxx> wrote: > On Sun, 26 Jun 2011 21:13:17 +0300 Alexander Lyakas <alex.bolshoy@xxxxxxxxx> > wrote: > >> Hello Neil, >> thank you for your response. Meanwhile I have moved to stock ubuntu >> natty 11.04, but it still happens. I have a simple script that >> reproduces the issue for me in less than 1 minute. >> System details: >> Linux ubuntu 2.6.38-8-server #42-Ubuntu SMP Mon Apr 11 03:49:04 UTC >> 2011 x86_64 x86_64 x86_64 GNU/Linux >> >> Here is the script: >> ################################## >> #!/bin/bash >> >> while true >> do >> mdadm --create /dev/md1123 --raid-devices=3 --level=5 >> --bitmap=internal --name=1123 --run --auto=md --metadata=1.2 >> --homehost=alex --verbose /dev/sda /dev/sdb /dev/sdc >> sleep 6 >> mdadm --manage /dev/md1123 --fail /dev/sda >> sleep 1 >> if mdadm --stop /dev/md1123 >> then >> true >> else >> break >> fi >> done >> ##################################### > > Thanks for the script. Unfortunately I still cannot reproduce. > I suspect there is some subtle race issue that is heavily dependant on the > particular hardware you have. > > It might help if I could get stack traces of the relevant processes. i.e. > md1123_raid5 and md1123_resync. > > A previous post contained a trace of _resync, but it wouldn't hurt to get > another one. You can get them by > > cat /proc/PROCESS-ID/stack > > or possibly > > echo w > /proc/sysrq-trigger > > then look in the output of 'dmesg'. > > Thanks, > NeilBrown > -- To unsubscribe from this list: send the line "unsubscribe linux-raid" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html