Steven Hartland
2014-Nov-06 01:20 UTC
10.1 RC4 r273903 - zpool scrub on ssd mirror - ahci command timeout
Try recabling and re-seating, if it still happens try to identify if its the disk or backplane by moving it in the chassis. We had a machine here recently where it was backplane issue and simply replacing it fixed the issue. On 06/11/2014 00:27, Kai Gallasch wrote:> Am Wed, 05 Nov 2014 23:44:15 +0000 > schrieb Steven Hartland <killing at multiplay.co.uk>: > >> Looks like a HW issue, how is it connected to the controller and what >> is the controller? > It's a SUN X2270 M1 server with 4 SATA connected disks. > > The (2.5") SSD drives are inside SUN 3.5" disk carriers and are sitting > on top of a 2.5" to 3.5" converter - like this one here > http://goo.gl/yBfS1V > > > dmesg.out: > > > Copyright (c) 1992-2014 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 10.1-RC4 #0 r273903: Fri Oct 31 15:32:22 CET 2014 > kgal at beltwaybandit.free.de:/usr/obj/usr/src/sys/X2270-10 amd64 > FreeBSD clang version 3.4.1 (tags/RELEASE_34/dot1-final 208032) 20140512 > CPU: Intel(R) Xeon(R) CPU L5520 @ 2.27GHz (2266.80-MHz K8-class CPU) > Origin = "GenuineIntel" Id = 0x106a5 Family = 0x6 Model = 0x1a Stepping = 5 > Features=0xbfebfbff<FPU,VME,DE,PSE,TSC,MSR,PAE,MCE,CX8,APIC,SEP,MTRR,PGE,MCA,CMOV,PAT,PSE36,CLFLUSH,DTS,ACPI,MMX,FXSR,SSE,SSE2,SS,HTT,TM,PBE> > Features2=0x9ce3bd<SSE3,DTES64,MON,DS_CPL,VMX,EST,TM2,SSSE3,CX16,xTPR,PDCM,DCA,SSE4.1,SSE4.2,POPCNT> > AMD Features=0x28100800<SYSCALL,NX,RDTSCP,LM> > AMD Features2=0x1<LAHF> > VT-x: PAT,HLT,MTF,PAUSE,EPT,VPID > TSC: P-state invariant, performance statistics > real memory = 51539607552 (49152 MB) > avail memory = 50000900096 (47684 MB) > Event timer "LAPIC" quality 400 > ACPI APIC Table: <040910 APIC1030> > FreeBSD/SMP: Multiprocessor System Detected: 16 CPUs > FreeBSD/SMP: 2 package(s) x 4 core(s) x 2 SMT threads > cpu0 (BSP): APIC ID: 16 > cpu1 (AP): APIC ID: 17 > cpu2 (AP): APIC ID: 18 > cpu3 (AP): APIC ID: 19 > cpu4 (AP): APIC ID: 20 > cpu5 (AP): APIC ID: 21 > cpu6 (AP): APIC ID: 22 > cpu7 (AP): APIC ID: 23 > cpu8 (AP): APIC ID: 0 > cpu9 (AP): APIC ID: 1 > cpu10 (AP): APIC ID: 2 > cpu11 (AP): APIC ID: 3 > cpu12 (AP): APIC ID: 4 > cpu13 (AP): APIC ID: 5 > cpu14 (AP): APIC ID: 6 > cpu15 (AP): APIC ID: 7 > ioapic0 <Version 2.0> irqs 0-23 on motherboard > ioapic1 <Version 2.0> irqs 24-47 on motherboard > random: <Software, Yarrow> initialized > module_register_init: MOD_LOAD (vesa, 0xffffffff8085c590, 0) error 19 > kbd1 at kbdmux0 > cryptosoft0: <software crypto> on motherboard > acpi0: <040910 XSDT1030> on motherboard > acpi0: Power Button (fixed) > acpi0: reservation of 0, a0000 (3) failed > acpi0: reservation of 100000, bff00000 (3) failed > cpu0: <ACPI CPU> on acpi0 > cpu1: <ACPI CPU> on acpi0 > cpu2: <ACPI CPU> on acpi0 > cpu3: <ACPI CPU> on acpi0 > cpu4: <ACPI CPU> on acpi0 > cpu5: <ACPI CPU> on acpi0 > cpu6: <ACPI CPU> on acpi0 > cpu7: <ACPI CPU> on acpi0 > cpu8: <ACPI CPU> on acpi0 > cpu9: <ACPI CPU> on acpi0 > cpu10: <ACPI CPU> on acpi0 > cpu11: <ACPI CPU> on acpi0 > cpu12: <ACPI CPU> on acpi0 > cpu13: <ACPI CPU> on acpi0 > cpu14: <ACPI CPU> on acpi0 > cpu15: <ACPI CPU> on acpi0 > attimer0: <AT timer> port 0x40-0x43 irq 0 on acpi0 > Timecounter "i8254" frequency 1193182 Hz quality 0 > Event timer "i8254" frequency 1193182 Hz quality 100 > atrtc0: <AT realtime clock> port 0x70-0x71 irq 8 on acpi0 > Event timer "RTC" frequency 32768 Hz quality 0 > hpet0: <High Precision Event Timer> iomem 0xfed00000-0xfed003ff on acpi0 > Timecounter "HPET" frequency 14318180 Hz quality 950 > Event timer "HPET" frequency 14318180 Hz quality 350 > Event timer "HPET1" frequency 14318180 Hz quality 340 > Event timer "HPET2" frequency 14318180 Hz quality 340 > Event timer "HPET3" frequency 14318180 Hz quality 340 > Timecounter "ACPI-fast" frequency 3579545 Hz quality 900 > acpi_timer0: <24-bit timer at 3.579545MHz> port 0x808-0x80b on acpi0 > pcib0: <ACPI Host-PCI bridge> port 0xcf8-0xcff on acpi0 > pci0: <ACPI PCI bus> on pcib0 > pcib1: <ACPI PCI-PCI bridge> at device 1.0 on pci0 > pci4: <ACPI PCI bus> on pcib1 > igb0: <Intel(R) PRO/1000 Network Connection version - 2.4.0> port 0xec00-0xec1f mem 0xfbee0000-0xfbefffff,0xfbec0000-0xfbedffff,0xfbebc000-0xfbebffff irq 40 at device 0.0 on pci4 > igb0: Using MSIX interrupts with 5 vectors > igb0: Ethernet address: 00:14:4f:ca:a9:00 > igb0: Bound queue 0 to cpu 0 > igb0: Bound queue 1 to cpu 1 > igb0: Bound queue 2 to cpu 2 > igb0: Bound queue 3 to cpu 3 > igb1: <Intel(R) PRO/1000 Network Connection version - 2.4.0> port 0xe880-0xe89f mem 0xfbe60000-0xfbe7ffff,0xfbe40000-0xfbe5ffff,0xfbe3c000-0xfbe3ffff irq 28 at device 0.1 on pci4 > igb1: Using MSIX interrupts with 5 vectors > igb1: Ethernet address: 00:14:4f:ca:a9:01 > igb1: Bound queue 0 to cpu 4 > igb1: Bound queue 1 to cpu 5 > igb1: Bound queue 2 to cpu 6 > igb1: Bound queue 3 to cpu 7 > pcib2: <ACPI PCI-PCI bridge> at device 3.0 on pci0 > pci3: <ACPI PCI bus> on pcib2 > pcib3: <ACPI PCI-PCI bridge> at device 7.0 on pci0 > pci2: <ACPI PCI bus> on pcib3 > pci0: <base peripheral, interrupt controller> at device 20.0 (no driver attached) > pci0: <base peripheral, interrupt controller> at device 20.1 (no driver attached) > pci0: <base peripheral, interrupt controller> at device 20.2 (no driver attached) > pci0: <base peripheral, interrupt controller> at device 20.3 (no driver attached) > uhci0: <Intel 82801JI (ICH10) USB controller USB-D> port 0xb800-0xb81f irq 16 at device 26.0 on pci0 > uhci0: LegSup = 0x2f00 > usbus0 on uhci0 > uhci1: <Intel 82801JI (ICH10) USB controller USB-E> port 0xb480-0xb49f irq 21 at device 26.1 on pci0 > uhci1: LegSup = 0x2f00 > usbus1 on uhci1 > uhci2: <Intel 82801JI (ICH10) USB controller USB-F> port 0xb400-0xb41f irq 19 at device 26.2 on pci0 > uhci2: LegSup = 0x2f00 > usbus2 on uhci2 > ehci0: <Intel 82801JI (ICH10) USB 2.0 controller USB-B> mem 0xfbdf4000-0xfbdf43ff irq 18 at device 26.7 on pci0 > usbus3: EHCI version 1.0 > usbus3 on ehci0 > uhci3: <Intel 82801JI (ICH10) USB controller USB-A> port 0xc000-0xc01f irq 23 at device 29.0 on pci0 > uhci3: LegSup = 0x2f00 > usbus4 on uhci3 > uhci4: <Intel 82801JI (ICH10) USB controller USB-B> port 0xbc00-0xbc1f irq 19 at device 29.1 on pci0 > uhci4: LegSup = 0x2f00 > usbus5 on uhci4 > uhci5: <Intel 82801JI (ICH10) USB controller USB-C> port 0xb880-0xb89f irq 18 at device 29.2 on pci0 > uhci5: LegSup = 0x2f00 > usbus6 on uhci5 > ehci1: <Intel 82801JI (ICH10) USB 2.0 controller USB-A> mem 0xfbdf6000-0xfbdf63ff irq 23 at device 29.7 on pci0 > usbus7: EHCI version 1.0 > usbus7 on ehci1 > pcib4: <ACPI PCI-PCI bridge> at device 30.0 on pci0 > pci1: <ACPI PCI bus> on pcib4 > vgapci0: <VGA-compatible display> port 0xdc00-0xdc7f mem 0xfb000000-0xfb7fffff,0xfafe0000-0xfaffffff irq 16 at device 5.0 on pci1 > vgapci0: Boot video device > isab0: <PCI-ISA bridge> at device 31.0 on pci0 > isa0: <ISA bus> on isab0 > ahci0: <Intel ICH10 AHCI SATA controller> port 0xcc00-0xcc07,0xc880-0xc883,0xc800-0xc807,0xc480-0xc483,0xc400-0xc41f mem 0xfbdfa000-0xfbdfa7ff irq 19 at device 31.2 on pci0 > ahci0: AHCI v1.20 with 6 3Gbps ports, Port Multiplier not supported > ahcich0: <AHCI channel> at channel 0 on ahci0 > ahcich1: <AHCI channel> at channel 1 on ahci0 > ahcich2: <AHCI channel> at channel 2 on ahci0 > ahcich3: <AHCI channel> at channel 3 on ahci0 > ahcich4: <AHCI channel> at channel 4 on ahci0 > ahcich5: <AHCI channel> at channel 5 on ahci0 > ahciem0: <AHCI enclosure management bridge> on ahci0 > acpi_button0: <Power Button> on acpi0 > ipmi0: <IPMI System Interface> port 0xca2,0xca6 on acpi0 > ipmi0: KCS mode found at io 0xca2 on acpi > qpi0: <QPI system bus> on motherboard > pcib5: <QPI Host-PCI bridge> pcibus 255 on qpi0 > pci255: <PCI bus> on pcib5 > pcib6: <QPI Host-PCI bridge> pcibus 254 on qpi0 > pci254: <PCI bus> on pcib6 > orm0: <ISA Option ROMs> at iomem 0xc0000-0xc7fff,0xc8000-0xc8fff,0xc9000-0xc9fff,0xca000-0xcafff on isa0 > sc0: <System console> at flags 0x100 on isa0 > sc0: CGA <16 virtual consoles, flags=0x300> > vga0: <Generic ISA VGA> at port 0x3d0-0x3db iomem 0xb8000-0xbffff 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] > uart0: <Non-standard ns8250 class UART with FIFOs> at port 0x3f8-0x3ff irq 4 on isa0 > uart0: console (115200,n,8,1) > coretemp0: <CPU On-Die Thermal Sensors> on cpu0 > est0: <Enhanced SpeedStep Frequency Control> on cpu0 > p4tcc0: <CPU Frequency Thermal Control> on cpu0 > coretemp1: <CPU On-Die Thermal Sensors> on cpu1 > est1: <Enhanced SpeedStep Frequency Control> on cpu1 > p4tcc1: <CPU Frequency Thermal Control> on cpu1 > coretemp2: <CPU On-Die Thermal Sensors> on cpu2 > est2: <Enhanced SpeedStep Frequency Control> on cpu2 > p4tcc2: <CPU Frequency Thermal Control> on cpu2 > coretemp3: <CPU On-Die Thermal Sensors> on cpu3 > est3: <Enhanced SpeedStep Frequency Control> on cpu3 > p4tcc3: <CPU Frequency Thermal Control> on cpu3 > coretemp4: <CPU On-Die Thermal Sensors> on cpu4 > est4: <Enhanced SpeedStep Frequency Control> on cpu4 > p4tcc4: <CPU Frequency Thermal Control> on cpu4 > coretemp5: <CPU On-Die Thermal Sensors> on cpu5 > est5: <Enhanced SpeedStep Frequency Control> on cpu5 > p4tcc5: <CPU Frequency Thermal Control> on cpu5 > coretemp6: <CPU On-Die Thermal Sensors> on cpu6 > est6: <Enhanced SpeedStep Frequency Control> on cpu6 > p4tcc6: <CPU Frequency Thermal Control> on cpu6 > coretemp7: <CPU On-Die Thermal Sensors> on cpu7 > est7: <Enhanced SpeedStep Frequency Control> on cpu7 > p4tcc7: <CPU Frequency Thermal Control> on cpu7 > coretemp8: <CPU On-Die Thermal Sensors> on cpu8 > est8: <Enhanced SpeedStep Frequency Control> on cpu8 > p4tcc8: <CPU Frequency Thermal Control> on cpu8 > coretemp9: <CPU On-Die Thermal Sensors> on cpu9 > est9: <Enhanced SpeedStep Frequency Control> on cpu9 > p4tcc9: <CPU Frequency Thermal Control> on cpu9 > coretemp10: <CPU On-Die Thermal Sensors> on cpu10 > est10: <Enhanced SpeedStep Frequency Control> on cpu10 > p4tcc10: <CPU Frequency Thermal Control> on cpu10 > coretemp11: <CPU On-Die Thermal Sensors> on cpu11 > est11: <Enhanced SpeedStep Frequency Control> on cpu11 > p4tcc11: <CPU Frequency Thermal Control> on cpu11 > coretemp12: <CPU On-Die Thermal Sensors> on cpu12 > est12: <Enhanced SpeedStep Frequency Control> on cpu12 > p4tcc12: <CPU Frequency Thermal Control> on cpu12 > coretemp13: <CPU On-Die Thermal Sensors> on cpu13 > est13: <Enhanced SpeedStep Frequency Control> on cpu13 > p4tcc13: <CPU Frequency Thermal Control> on cpu13 > coretemp14: <CPU On-Die Thermal Sensors> on cpu14 > est14: <Enhanced SpeedStep Frequency Control> on cpu14 > p4tcc14: <CPU Frequency Thermal Control> on cpu14 > coretemp15: <CPU On-Die Thermal Sensors> on cpu15 > est15: <Enhanced SpeedStep Frequency Control> on cpu15 > p4tcc15: <CPU Frequency Thermal Control> on cpu15 > random: unblocking device. > usbus0: 12Mbps Full Speed USB v1.0 > ZFS filesystem version: 5 > ZFS storage pool version: features support (5000) > Timecounters tick every 1.000 msec > usbus1: 12Mbps Full Speed USB v1.0 > ugen0.1: <Intel> at usbus0 > uhub0: <Intel UHCI root HUB, class 9/0, rev 1.00/1.00, addr 1> on usbus0 > ugen1.1: <Intel> at usbus1 > uhub1: <Intel UHCI root HUB, class 9/0, rev 1.00/1.00, addr 1> on usbus1 > usbus2: 12Mbps Full Speed USB v1.0 > usbus3: 480Mbps High Speed USB v2.0 > ugen2.1: <Intel> at usbus2 > uhub2: <Intel UHCI root HUB, class 9/0, rev 1.00/1.00, addr 1> on usbus2 > ugen3.1: <Intel> at usbus3 > uhub3: <Intel EHCI root HUB, class 9/0, rev 2.00/1.00, addr 1> on usbus3 > usbus4: 12Mbps Full Speed USB v1.0 > usbus5: 12Mbps Full Speed USB v1.0 > ugen4.1: <Intel> at usbus4 > uhub4: <Intel UHCI root HUB, class 9/0, rev 1.00/1.00, addr 1> on usbus4 > ugen5.1: <Intel> at usbus5 > uhub5: <Intel UHCI root HUB, class 9/0, rev 1.00/1.00, addr 1> on usbus5 > usbus6: 12Mbps Full Speed USB v1.0 > usbus7: 480Mbps High Speed USB v2.0 > ugen6.1: <Intel> at usbus6 > uhub6: <Intel UHCI root HUB, class 9/0, rev 1.00/1.00, addr 1> on usbus6 > ugen7.1: <Intel> at usbus7 > uhub7: <Intel EHCI root HUB, class 9/0, rev 2.00/1.00, addr 1> on usbus7 > ipmi0: IPMI device rev. 1, firmware rev. 3.00, version 2.0 > uhub0: 2 ports with 2 removable, self powered > ipmi0: Number of channels 5 > ipmi0: Attached watchdog > ada0 at ahcich0 bus 0 scbus0 target 0 lun 0 > uhub1: 2 ports with 2 removable, self powered > ada0: <HITACHI HUA7250SBSUN500G 0944JWRUMF GK6OAC5A> ATA-7uhub2: 2 ports with 2 removable, self powered > SATA 2.x device > ada0: Serial Number GTA460P6GWRUMF > ada0: 300.000MB/s transfers (SATA 2.x, UDMA6, PIO 8192bytes) > ada0: Command Queueing enabled > ada0: 476940MB (976773168 512 byte sectors: 16H 63S/T 16383C) > ada0: Previously was known as ad4 > ada1 at ahcich1 bus 0 scbus1 target 0 lun 0 > uhub4: 2 ports with 2 removable, self powered > ada1: <HITACHI HUA7250SBSUN500G 0911JS4H0F GK6OAC5A> ATA-7uhub5: 2 ports with 2 removable, self powered > SATA 2.x device > ada1: Serial Number GTF402P6GS4H0F > ada1: 300.000MB/s transfersuhub6: 2 ports with 2 removable, self powered > (SATA 2.x, UDMA6, PIO 8192bytes) > ada1: Command Queueing enabled > ada1: 476940MB (976773168 512 byte sectors: 16H 63S/T 16383C) > ada1: Previously was known as ad6 > ada2 at ahcich2 bus 0 scbus2 target 0 lun 0 > ada2: <Samsung SSD 850 PRO 512GB EXM01B6Q> ATA-9 SATA 3.x device > ada2: Serial Number S1SXNSAFA06834H > ada2: 300.000MB/s transfers (SATA 2.x, UDMA6, PIO 512bytes) > ada2: Command Queueing enabled > ada2: 488386MB (1000215216 512 byte sectors: 16H 63S/T 16383C) > ada2: Previously was known as ad8 > ada3 at ahcich3 bus 0 scbus3 target 0 lun 0 > ada3: <Samsung SSD 850 PRO 512GB EXM01B6Q> ATA-9 SATA 3.x device > ada3: Serial Number S1SXNSAFA06835A > ada3: 300.000MB/s transfers (SATA 2.x, UDMA6, PIO 512bytes) > ada3: Command Queueing enabled > ada3: 488386MB (1000215216 512 byte sectors: 16H 63S/T 16383C) > ada3: Previously was known as ad10 > ses0 at ahciem0 bus 0 scbus6 target 0 lun 0 > ses0: <AHCI SGPIO Enclosure 1.00 0001> SEMB S-E-S 2.00 device > ses0: SEMB SES Device > GEOM_MIRROR: Device mirror/swap launched (2/2). > SMP: AP CPU #1 Launched! > SMP: AP CPU #8 Launched! > SMP: AP CPU #2 Launched! > SMP: AP CPU #9 Launched! > SMP: AP CPU #3 Launched! > SMP: AP CPU #14 Launched! > SMP: AP CPU #6 Launched! > SMP: AP CPU #10 Launched! > SMP: AP CPU #5 Launched! > SMP: AP CPU #7 Launched! > SMP: AP CPU #13 Launched! > SMP: AP CPU #12 Launched! > SMP: AP CPU #15 Launched! > SMP: AP CPU #11 Launched! > SMP: AP CPU #4 Launched! > Timecounter "TSC-low" frequency 1133397512 Hz quality 1000 > Root mount waiting for: usbus7 usbus3 > Root mount waiting for: usbus7 usbus3 > uhub3: 6 ports with 6 removable, self powered > uhub7: 6 ports with 6 removable, self powered > Root mount waiting for: usbus7 usbus3 > ugen3.2: <American Megatrends Inc.> at usbus3 > usb_alloc_device: set address 2 failed (USB_ERR_IOERROR, ignored) > Root mount waiting for: usbus7 > ugen7.2: <JetFlash> at usbus7 > umass0: <JetFlash Mass Storage Device, class 0/0, rev 2.00/11.00, addr 2> on usbus7 > umass0: SCSI over Bulk-Only; quirks = 0x0100 > umass0:7:0:-1: Attached to scbus7 > da0 at umass-sim0 bus 0 scbus7 target 0 lun 0 > da0: <JetFlash Transcend 4GB 1100> Removable Direct Access SCSI-4 device > da0: Serial Number 82L68FGM1BTVJHR0 > da0: 40.000MB/s transfers > da0: 3861MB (7907328 512 byte sectors: 255H 63S/T 492C) > da0: quirks=0x12<NO_6_BYTE,NO_RC16> > ugen2.2: <American Megatrends Inc.> at usbus2 > ukbd0: <Keyboard Interface> on usbus2 > Trying to mount root from zfs:rpool/ROOT/r273903-10.1 []... > kbd2 at ukbd0 > ums0: <Mouse Interface> on usbus2 > ums0: 3 buttons and [XY] coordinates ID=0 > ukbd1: <vendor 0x04d9 product 0x1400, class 0/0, rev 1.10/1.43, addr 2> on usbus4 > kbd3 at ukbd1 > ums1: <vendor 0x04d9 product 0x1400, class 0/0, rev 1.10/1.43, addr 2> on usbus4 > ums1: 5 buttons and [XYZ] coordinates ID=1 > ugen4.2: <vendor 0x04d9> at usbus4 (disconnected) > ukbd1: at uhub4, port 2, addr 2 (disconnected) > ums1: at uhub4, port 2, addr 2 (disconnected) > ugen4.2: <vendor 0x04d9> at usbus4 > ukbd1: <vendor 0x04d9 product 0x1400, class 0/0, rev 1.10/1.43, addr 2> on usbus4 > kbd3 at ukbd1 > ums1: <vendor 0x04d9 product 0x1400, class 0/0, rev 1.10/1.43, addr 2> on usbus4 > ums1: 5 buttons and [XYZ] coordinates ID=1 > > > >
Kai Gallasch
2014-Dec-09 08:34 UTC
10.1 RC4 r273903 - zpool scrub on ssd mirror - ahci command timeout
Am Thu, 06 Nov 2014 01:20:47 +0000 schrieb Steven Hartland <killing at multiplay.co.uk>:> Try recabling and re-seating, if it still happens try to identify if > its the disk or backplane by moving it in the chassis. We had a > machine here recently where it was backplane issue and simply > replacing it fixed the issue.Steven. In the last weeks I took some time to single out the reason for the AHCI timeouts with the two Samsung SSD drives. Just for the record, my original post on the FreeBSD mailing list archive: http://lists.freebsd.org/pipermail/freebsd-stable/2014-November/080914.html I changed / tried the following to get rid of the AHCI timouts, but no chance, they still show :-/ Hardware: - Changed all four SATA cables with cables of an identical spare server - Changed all four SATA cables with certified SATA3 cables - Replaced the 2.5" -> 3.5" drive converters with ones of another manufacturer - Replaced the drive backplane of the server - Directly hooking the two SSDs up to the SATA connectors on the mainboard - Experimentally put an LSI 9212-4i4e PCIe SATA/SAS Controller into the server and and connected the SATA cables to it. - Same as before, but using the certified SATA3 cables - Same as before, but this time connecting the two SSDs directly to the 9212-4i4e - Same as before, connecting the two SSD directly to the 9212-4i4e, but this time with the original SATA cables BIOS: - Temporarily disabled Power Management - Tried disabling "Enable Hot Plug" Option The difference between using the SATA connectors of the mainboard and using the LSI 9212-4i4e is, that the LSI controller seems to be more picky about CRC errors on the SATA bus and bus problems even show without starting a zfs scrub. When doing a scrub using the LSI controller there are plenty of timeouts and in one test, one of the SSD drives even disappeard from the SATA bus. Of course all the time during testing the two Hitachi non-SSD SATA drives did not show any problems at all - although also connected to the mainboard or the LSI controller during the testing. So I now think the whole problem centers around the Samsung 850 PRO 512GB SSDs. Too bad I do not have the budget to just buy two Intel (or other) SSDs of similar size and see if the timeouts disappear.. I wonder if this is a firmware issue with the drive or just some misguided fancy energy saving feature of this particular drive model causing the whole trouble. Both drives have serial numbers not far apart and smartctl claims there are no errors on the SSDs. Any ideas (left) ? Regards, Kai. -- PGP-KeyID = 0xE401B671927D4A5C I am not a robot. -------------- next part -------------- A non-text attachment was scrubbed... Name: signature.asc Type: application/pgp-signature Size: 819 bytes Desc: not available URL: <http://lists.freebsd.org/pipermail/freebsd-stable/attachments/20141209/d0461fbf/attachment.sig>